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Lighting Interviews with Arnulf Rupp & Alfonso D'Andretta Optimizing Lighting Energy Efficiency (Part II) Evolution of Street Lights
Editorial: Insights and Breakthroughs from Leaders in Lighting Technology
COMMENTARY (p8) Why Join LightingEurope in 2025? by Elena Scaroni, Secretary General, LightingEurope
INTERNATIONAL LIGHTING NEWS (p10)
DALI LIGHTING INTERVIEW (p20) DALI Insights with DALI Alliance's Chair of the Board of the Directors – Arnulf Rupp, Governmental Affairs Director at Inventronics by LED professional Editors
GEWISS LIGHTING INTERVIEW (p26) From Vision to Reality: How Gewiss is Revolutionizing the Lighting Industry – Alfonso D'Andretta, Managing Director, BU Lighting at Gewiss by LED professional Editors
WÜRTH – POST SHOW REPORT (p32) Pioneering Progress: Würth Elektronik's Highlights and Innovations Unveiled at electronica by LED professional Editors
AMS OSRAM – POST SHOW REPORT (p36) Lighting and Sensing the Future: ams OSRAM's Breakthroughs in LEDs, Sensors, and Projection by LED professional Editors
LIGHTING RESEARCH (p40) Optimizing Lighting Energy Efficiency (Part II) – Consideration of Behavioral Aspects in Lighting Systems by Dipl.-Ing. Johannes WENINGER, Dr. techn. Sascha HAMMES, M.Sc., Bartenbach
STREET LIGHTING (p48) Will Street Lights Become the Location of Choice for Sensors? by Sara El Feky, Karl Göransson, Walter Longwe and Graham Mawer, Barcelona’s Zigurat Institute
AUTOMOTIVE (p50) LED Matrix Manager Empowers High Density Automotive Intelligent and Safe Front Light System by Jason BAI, Analog Devices
LPS DIGITAL TALKS (p56) Expert Talks on Light – LUMILEDS Challenges and Solutions when Designing Large Cluster Multi-Color LED Sources by Rob Engelen, Director of LED Applications Engineering at Lumileds Expanding the Horizons of Car Body Lighting by Dr. Thorsten Anger, Product Manager 3D LED & MxN at Lumileds
Interview with Casambi's CEO Mark McClear Optimizing Lighting Energy Efficiency Understanding UV LED Specifications
Editorial: 2024's Final Edition: Game-Changing Insights and Technologies Shaping 2025 Lighting
COMMENTARY(p8) Is There Good Light? by Peter Dehoff, Director Professional Associations and Standardization at Zumtobel Lighting
INTERNATIONAL LIGHTING NEWS(p10)
CASAMBI LIGHTING INTERVIEW (p20) Revolutionizing Lighting: How Wireless Control and Innovation are Transforming the Industry, Mark McClear, CEO of Casambi by LED professional Editors
TRIDONIC LIGHTING INTERVIEW (p28) Pioneering the Future of Smart-, and Sustainable Lighting, Dr. Antonio A. Romano, VP R&D at Tridonic by LED professional Editors
LIGHTING RESEARCH (p36) Optimizing Lighting Energy Efficiency (Part I) – Behavioral Aspects of Energy Consumption by Dipl.-Ing. Johannes Weninger and Dr. techn. Sascha HAMMES, M.Sc., Bartenbach & University of Innsbruck
THERMAL DESIGN(p44) Innovative Lighting Meets Advanced Engineering: Inside the Creation of the Luvo LED Lamp by Omid Javanmardi and Alex Fischer from Luke Roberts & SimScale
LIGHTING CONTROLS (p46) Automated Server-based Lighting Control Through Music Metadata by Tim Köbel, M.Sc., Karlsruhe Institute of Technology (KIT)
UV Technology (p52) Understanding UV LED Specifications: A Selection Blueprint by Dr. Pratibha Sharma, Violumas
LPS DIGITAL TALKS (p56) LUMINUS, Improving Life with Photons by Robert de Jonge, Luminus Devices
Interview with CIE's VP Technical, Tony Bergen Cost-saving Potential of Zonal Lighting Re-entrainment after Seasonal Clock Changes
Editorial: Intelligent Lighting, Global Standards, and Health
COMMENTARY (p8) Will AI Make Research into Human Response to Light Obsolute? by Professor Jean-Paul LINNARTZ, Professor at Eindhoven University of Technology
INTERNATIONAL LIGHTING NEWS (p10)
CIE INTERVIEW (p20) Global Leadership in Lighting – CIE's Role in Driving Technology, Tony BERGEN, Vice-President Technical of CIE by LED professional Editors
PROJECTS (p26) 6-star Hospitality Approach for the Shopping Mall Nanjing in China by Lichtvision Design
LIGHTING-DESIGN (p36) Transforming General Lighting – The Cost-saving Potential of Zonal Lighting by Matthias Boeser and Dr. Thomas Schielke, ERCO
LIGHTING RESEARCH (p42) Days to Re-entrainment Following the Spring and Autumn Changes in Local Clock Time: Beyond Simple Heuristics by Mark S. Rea, Rohan Nagare, John D. Bullough, and Marina G. Figueiro
HORTICULTURAL LIGHTING (p52) LED Lighting in Horticultural Applications – A 2024 Update by Prof. Erik RUNKLE, Michigan State University
EVENTS (p54) LED professional Symposium 2024, LpS Digital Summit & LpS Awards by Luger Research e.U. / LED professional
LPS DIGITAL TALKS (p56) Expert Talks on Light – Time Matters, Shining Light on Metabolic Health by Good Light Group, Daylight Academy, Society for Light Treatment and Biological Rhythms, and Luger Research
Standards Beacon: Insights from CIE's VP, Peter Thorns Future of 3D Printed Lighting Lighting's Effects on Material Perception
Editorial: Serving the Lighting Design and Lighting Industry Community at the Next Level
COMMENTARY (p8) Roadmap to “Lighting 4.0” Era and the SSL2 (Sustainable Smart Lighting ⊗ Solid State Lighting) Concept by Professor Georges ZISSIS, Professor and Vice-deal for the Faculty of Science and Engineering at the Toulouse University (France)
INTERNATIONAL LIGHTING NEWS (p10)
CIE INTERVIEW (p20) The Beacon of Standards – Insights from CIE’s VP on the Evolution of Lighting Technology & Design, Peter THORNS, Vice-President Standards at CIE by LED professional Editors
PROJECTS (p26) Jil Sander New Bond Street Store, London by Lichtvision Design
ECO-DESIGN (p36) Illuminating the Future with Sustainable 3D Printed Lighting Solutions by Philips MyCreation - A Lighting Brand by Signify
TECHNOLOGY (p40) Adoption of Narrowband Red Phosphor Promises Improved Quality of Light in General Lighting by Adil SIDIQI, Vertical Segment Manager, Future Lighting Solutions
LIGHTING DESIGN (p44) The Impact of Lighting on the Visual Perception of Material Surfaces by MMag. Martina ASCHER and Dipl.-Ing. Johannes WENINGER, Bartenbach
AUTOMOTIVE LIGHTING (p52) The Intersection of Innovation: Xavier Denis Discusses the Convergence of Architectural and Automotive Lighting by Xavier DENIS, Head of Technical Support & Marketing at Nichia
LPS DIGITAL TALKS (p56) Expert Talks on Light – Time Matters, Shining Light on Metabolic Health by Good Light Group, Daylight Academy, Society for Light Treatment and Biological Rhythms, and Luger Research
Interview with Dr. Jennifer Veitch, President of CIE Environmental Impact of LED Luminaires The Future of Scan-To-BIM in Lighting Design
Editorial: Navigating the Future of Lighting with Science and Innovation
COMMENTARY (p8) A Roadmap for Light and Health by Prof. Dr. Manuel SPITSCHAN, Professor for Chronobiology and Health at the Technical University of Munich and Max Planck Research Group Leader at the Max Planck Institute for Biological Cybernetics
INTERNATIONAL LIGHTING NEWS (p10)
CIE INTERVIEW (p20) Lighting the Way Forward – A Comprehensive Look at the CIE's Strategic Vision for the Future of Lighting, Dr. Jennifer Veitch, President of CIE by LED professional Editors
UL INTERVIEW (p26) Circadian Tools Advance the Health and Lighting Market – Adam Lilien, Global Business Development Manager of Lighting at UL Solutions by LED professional Editors
ECO-DESIGN (p30) Environmental Impacts of LED Luminaires, Recycling Practices, and Recommendations for a More Sustainable Lighting Industry by Dr. Sebastian Knoche, Trilux; Dipl.-Ing. Marina Proske, Fraunhofer IZM
MICRO-OPTICS (p40) The Promising Future of Free-form Micro-Optics in Mobility Interiors by Christian Forstner, Head of Sales at Seisenbacher
LIGHTING DESIGN (p42) The Future of Scan-To-BIM in Lighting Design by Martin Huber, Co-Founder & CEO of Metaroom by Amrax
MARKET REPORT (p50) Solid-State Lighting Market Report – ASIA by Dr. J. Norman Bardsely, Chief Analyst at International Solid-State Lighting Alliance
LPS DIGITAL TALKS (p56) Expert Talks on Light – Time Matters, Shining Light on Metabolic Health by Good Light Group, Daylight Academy, Society for Light Treatment and Biological Rhythms, and Luger Research
Light + Building Post-Show Reports and Interviews Horticulture LEDs to Boost Vertical Farming Impact of LEDs on Global Warming
Editorial: Exploring the New Era of Responsible Lighting
COMMENTARY (p8) Light Enhances Our Lives by Dr. Anne Berends, Program Director Life Science at Seaborough
LIGHT + BUILDING 2024 – NEWS (p10)
LIGHT + BUILDING (p22) Groundbreaking Trends and Technologies by LED professional Editors
LIGHTINGEUROPE (p30) From Alarming Figures to Lighting Non-compliance to Constructive Solutions by Elena Scaroni, Secretary General of LightingEurope
LIGHTING BUSINESS (p32) Zumtobel and Pininfarina: Lighting Technology Pioneer Partners up with Design Expert to Shape the Future of Lighting by Zumtobel
OPTICS (p36) Free-form Micro-Optics in Automotive Applications by Dr. Daniela Karthaus, Lighting Technology & Optics Expert at FORVIA HELLA
HORTICULTURE (p40) Horticulture LEDs to Boost Vertical Farming Efficiency by Alexander Gerfer, Adithya Madanahalli, and Johann Waldherr from Würth Elektronik eiSos
REPORT (p44) Solid-State Lighting Report – The Impact of LEDs on Electricity Consumption and Global Warming by Dr. J. Norman Bardsely, Chief Analyst at International Solid-State Lighting Alliance
DESIGN (p48) Eco-Innovation in Lighting: LCA-CALC Leads the Way in Sustainable Lighting Solutions by Tiphaine Treins, Founder and Head of Temeloy
CONTROLS (p52) Connecting Lighting Design and Circadian Research with AI by Dr. Adrià Huguet-Ferran, Founder & CTO of KUMUX
SIMULATION (p56) Digital Twin Architecture for Lighting Infrastructure in the Context of Front-End Industry 4.0 by Alex Fischer, Product Manager at SimScale
LPS DIGITAL TALKS (p60) Expert Talks on Light – Micro-Optics in Automotive Lighting by FORVIA HELLA
Professor Shuji Nakamura's Blueprint for a Brighter Future Thoughts from a Visionary: Monica Luz Lobo Near-Infrared Light: A Breakthrough Clinical Study
Editorial: LpR100
COMMENTARY (p8) Prof. Shuji Nakamura’s Blueprint for a Brighter Tomorrow by Prof. Shuji Nakamura, Professor and Nobel Prize Winner, Physics 2014
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Lighting the Way Forward: Thoughts from a Visionary in the Field Mônica Luz LOBO, IALD President
LIGHTING DESIGN (p28) Zerlina Hughes, Creative Director Studio ZNA, and the National Portrait Gallery by Bronwen ROLLS, The Doing Collective
Tailored Lighting Intervention to Promote Entrainment in Myeloma Transplant Patients: A Field Study (p38) by Prof. Mariana G. FIGUEIRO and Allison ANDERSON, Icahn School of Medicine at Mount Sinai
Unlocking the Health Benefits of Near-Infrared Light: A Breakthrough Clinical Study (p48) by Dr. Anne BERENDS, Tom HILGERINK, and Dr. Mike KRAMES, Seaborough
TECHNOLOGY (p58) The Luminous Landscape: Light-Loggers and Their Role in Modern Lighting by Dr.-Ing. Oliver STEFANI and Prof. Björn SCHRADER, Lucerne University of Applied Sciences and Arts
Beyond Ecodesign: The Expanding Horizons of Sustainable Lighting (p64) by Arno GRABHER-MEYER; Tawsif FAISAL, V-Research
Comfortable LED Upgrade for Sophisticated Office Lighting (p74) by Nichia
AUTOMOTIVE SPECIAL (p78) Lumileds’ Dirk Vanderhaeghen on the Future of Automotive Lighting by Siegfried Luger, Publisher of LED Professional
ISAL 2023 – Symposium and Exhibition Review (p84) by Editors, LED professional
OLED Lighting Technology Brings Beauty and Safety to the Road (p94) by OLEDWorks
From Computers to Cars: Microchip’s Ethernet Leap into Automotive Illumination (p96) by Dipl.-Phys. Martin MILLER; Microchip Technology
Future of Vehicle Lighting: The Role of Measurement Technology (p98) by Oliver ESTERL, Sales & Product Manager, Instrument Systems
Interview: Janick Ihringer, ams OSRAM p20 Matter for Professional Lighting, Tridonic p34 Vitamin D Light Treatment with SSL, Bolb p44
Editorial: Issue 99: Paving the Way to a Luminous Milestone
COMMENTARY (p8) Five Key Trends Reshaping Lighting by Nicolas MARTIN, LVHM Sustainable Store Planning Manager
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Janick Ihringer,VP & GM Business-Line Illumination,ams OSRAM compiled by Editors; LED professional
LIGHTING DESIGN (p26) How Beauty Could Actually Save Our Brain by Martina FRATTURA, M.Sc., Beauty-informed Lighting Designer and Independent Researcher
LIGHTING DESIGN (p30) Wallwashing: Benefits and Tips for Perfect Vertical Illuminations by ERCO
LIGHTING CONTROLS (p34) Matter for Professional Lighting by Dr. Markus BECKER, Software Engineer Embedded Systems IoT at Tridonic
LIGHTING SOLUTION – ADVERTORIAL (p40) IoTH by Techno: Pioneering the Next Wave of Integrated Connectivity by Techno
HUMAN CENTRIC LIGHTING (p44) Enhancing Human Health with Solid State UVB Vitamin D Treatment by Frank HARDER, MSc. EE, Executive Vice President/CRO, Bolb
LPS DIGITAL – EXPERTS TALKS ON LIGHT (p50) Improving Light to Support Our Shared Natural Ecosystem and Dark Sky Initiatives by Willem Sillevis Smitt, Senior Director of Strategic Marketing at Lumileds
HORTICULTURE LIGHTING (p52) Controlled LED Lighting for Horticulture: A Review by Emmanouil D. FYLLADITAKIS, Electrical Engineer, University of West Attica, Greece
COMMENTARY (p8) Putting Light Users First: Health, Well-being and Socio-Economic Impact by Jan DENNEMAN, Chairman of the Good Light Group
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Kanetaka SEKIGUCHI, President and CEO of Citizen Electronics compiled by Editors; LED professional
AGRICULTURE (p24) Lighting Control Systems for Agriculture by Steve ROBERTS, Innovation Manager at RECOM Power
SMART HOME (p28) Smart Home – The Journey from Cool Gadget to Ubiquitous Infrastructure by Musa UNMEHOPA, Head of Wireless Standards & Regulations at Signfiy
CONTROLS (p32) Sustainability in Lighting Controls by DALI Alliance
LIGHTING SOLUTION – ADVERTORIAL (p36) Re-Fit Lighting Solution: Backgrounds – Lighting Concept – Business Success by Peter HAUMER, Head of Technical Sales at Lumitech/Kiteo
CONTROLS (p40) Automotive LED Driver Power Conversion Topology Guide by Analog Devices
LPS DIGITAL (p44) Expert Talks on Light
GLOBAL LIGHTING DIRECTORY (p46) Final Systems Providers
COVER STORY – WÜRTH ELEKTRONIK p28 Lighting Control for Food Production
Interview: Hugo Rohner, CEO Tridonic p20 Semiotics – The Language of Lighting, ERCO p42 Smart City Sensor Awards, Zhaga Consortium p56
Editorial: The Dimensions of Light
COMMENTARY (p8) Phototherapy and UV-A LED Technology by Anton SONNEVELD, Business Development Manager LEDs EMEA; Broadcom
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Hugo ROHNER, Chief Executive Officer, Tridonic compiled by Editors; LED professional
VERTICAL FARMING – COVER STORY (p28) Lighting Control for Food Production by Alexander GERFER, Johann WALDHERR, Harun ÖZGÜR; Würth Elektronik eiSos
PROJECTS (p34) Guangzhou International Finance Center (IFC) by Lichtvision Design
HUMAN CENTRIC LIGHTING (p38) The Power of Good Light Indoors: Boosting Sleep, Alertness, Mood and Productivity by Jan W. DENNEMAN, Marina C. GIMÉNEZ, Bruno M.J. SMETS, Roger SEXTON, Marijke C.M. GORDIJN; Good Light Group
LIGHTING DESIGN (p42) The Language of Lighting: Applying Semiotics in the Evaluation of Lighting Design by Dr. Thomas SCHIELKE, Architect and Lighting Design Trainer at ERCO
INTELLIGENT LIGHTING (p56) Recognizing Excellence in Smart City Sensors by Zhaga Consortium
LPS DIGITAL (p64) Expert Talks on Light
LpR96 | Mar/Apr 2023
Interview: Mark PUGH p20 Optimum Melanopic Light Source, Signify Research p28 LUMAWISE Motion Sensor, TE Connectivity p48 Cooling Performance for LEDs, Fischer Elektronik p58
COMMENTARY (p8) Shaping Leading Edge Technologies by Alexander GERFER, Managing Director & CTO, Würth Elektronik
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Leader in Photonics Innovation Mark PUGH, Executive Vice-President Marketing, LUMINUS Devices
INTEGRATIVE LIGHTING (p28) Healthy Daytime Indoor Lighting – How to Design the Optimum Melanopic Light Source by Dr. René T. WEGH, Principal Scientist and Dr. Ir. Mart P.J. PEETERS, Scientist; Signify Research
PROJECTS (p38) UK HOUSE London by Karen IHLAU, Design Director, et al.; Lichtvision Design
OUTDOOR LIGHTING – Advertorial (p48) LUMAWISE Motion Sensor Helps Cities Improve Energy Savings Without Compromising Safety by Jonathan CATCHPOLE, System Architect, TE Connectivity
LIGHTING TRENDS (p54) The Anatomy of Better Lighting by LightingEurope
THERMAL MANAGEMENT (p58) Cooling Performance for LEDs by Dipl.-Phys. Ing. Jürgen J. HARPAIN, R&D Manager, Fischer Elektronik
COMMENTARY (p8) More Durable, Safer and Sustainable by Fariyal KHANBABI, CEO at Dialight
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Leader in Optical Solutions Alessandro CILANO, Head of Global Product Marketing Illumination, ams OSRAM by Editors, LED professional
LPS DIGITAL SUMMIT (p24) Leader in Optical Solutions LpS Digital Summit – Keynotes, Panel Discussion, Awards by Editors, LED professional
NETWORKS (p44) Wireless Lighting Networks: Comfort and Intelligence for Workplaces by Matthias KASSNER, Vice President Product Marketing, EnOcean
THERMAL SIMULATION (p52) Luminaires Performance Simulation by Alex FISCHER, Product Manager, SIMSCALE
OPTICS SIMULATION – ADVERTORIAL (p56) Optics Simulation Based on Accurate Material Models by Dipl.-Ing. Gerhard FRIEDERICI, Editor; Dipl.-Ing. Matthias NOAK, Head of Optical Lab; CADFEM
LPS DIGITAL (p58) Expert Talks on Light
LpR94 | Nov/Dec 2022
Interviews: Rogier van der HEIDE, Stelios ZEREFOS, Hiroyoshi OGAWA p20-32 Design Tool for Ecodesign Directive, Lumileds p42 Will MicroLEDs Revolutionize the Display Industry? Yole Intelligence p46
COMMENTARY (p8) Being Ready for the Unexpected by Matthias KASSNER, Head of Product Marketing at EnOcean; Germany
INTERNATIONAL LIGHTING NEWS (p10)
NEW LIGHTING DESIGN (p20) Most Inspiring Lighting Designer Rogier van der HEIDE, Atelier Rogier van der HEIDE; Liechtenstein by Editors, LED professional
DESIGN & ARCHITECTURE (p28) From Architecture to Lighting Design and Education Professor Stelios ZEREFOS, Hellenic Open University; Greece by Editors, LED professional
NICHIA (p32) Interview with Nichia Corporation's President & CEO Hiroyoshi OGAWA, Nichia; Japan by Editors, LED professional
LIGHTING DESIGN PROJECT (p34) Hospitality Focus by Laura CIZAUSKAITE, High-End Hospitality Lighting Expert at Lichtvision Design; Germany
DESIGN TOOL (p42) Ecodesign Directive: Success in Stimulating Demand for Sustainable Lighting by Dr. Wouter SOER, Director of Product Development at Lumileds; The Netherlands
MICROLEDS (p46) Will MicroLEDs Revolutionize the Display Industry? by Dr. Eric VIREY, Senior Market and Technology Analyst at Yole Intelligence; USA
LPS DIGITAL (p54) Impact of Daytime Illuminance on Cognitive Functioning and Alertness by Renske LOK, Postdoctoral Researcher at Stanford University; USA
CONNECTED LIGHTING (p58) Smart Buildings vs. Intelligent Buildings: Why Intelligent Buildings Are the Better Choice by Barry MULLIGAN, Marketing Manager at Analog Devices; USA
LpR93 | Sept/Oct 2022
Interview: Prof. Georges ZISSIS, Toulouse 3 University p20 Vertical Illumination, Bartenbach p36 Retrofit Linear Tube Lampes p52
COMMENTARY (p8) Replacing Twilight with Good Light by Jan DENNEMAN, Chairman of the Good Light Group; The Netherlands
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Lighting Scientist and Authority Professor Georges ZISSIS; Toulouse 3 University, France by Editors, LED professional
LPS DIGITAL (p26) Impact of Daytime Illuminance on Cognitive Functioning and Alertness by Renske LOK, Postdoctoral Researcher; Stanford University, USA
LIGHTING DESIGN PROJECT (p28) Tiffany House, Macau, China by Lichtvision Design, Clemens SEIPELT, Germany
LIGHTING DESIGN (p36) Vertical Illumination by Dipl. Designer Wilfried KURZ, MLL; Bartenbach R&D, Austria
HCL LED – ADVERTORIAL (p42) Improve Alertness, Focus and Comfort with Biologically Effective Light by Menno SCHAKEL, Technical Marketing Engineer; Nichia, Germany
AUTOMOTIVE (p44) Adaptive-Driving-Beam Headlights: A Collaborative Approach to Efficient Manufacturing of Complex Shapes Optical LSR Parts by Martijn BEUKEMA, , Francois DE BUYL, Kevin VAN TIGGELEN, TS&D Scientists, Dow Belgium; Jake STEINBRECHER, TS&D Scientist, Dow USA; Hannes RIEGER, Head R&D, ELMET
LAMP TECHNOLOGIES (p52) Hidden Challenge and Its Solution for Retrofit Linear Tube Lamps by Dr. Mike KRAMES, Sr. Advisoer and Pieter SIX, CEO; Seaborough Research, The Netherlands
MEASUREMENT (p58) How to Assess the Eye Safety of VCSELs – Introduction by Dr. Günther LESCHHORN, Tianyuan CAO, Dr. Karhik IYER; Instruments Systems, Germany
LpR92 | July/Aug 2022
MicroLEDs Interview,Prof. J.Y. LIN and H.X. JIANG p20 Prediction of Melatonin Suppression p44 Metamerism and Spectral Power Distribution Adjustment p52
Editorial: From micro-LEDs to Integrative Lighting II
COMMENTARY (p8) Modern HCL Designs by Thomas ZAMPIERI, Senior Product Marketing Manager, OSRAM Digital Systems, Italy
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Bright Future for MicroLEDs Professor Jingyu LIN and Professor Hongxing JIANG, Texas Tech University, Lubbock, USA by Editors, LED professional
LPS DIGITAL (p26) Impact of Daytime Illuminance on Cognitive Functioning and Alertness by Renske LOK, Postdoctoral Researcher, Stanford University, USA
LIGHTING DESIGN PROJECT (p28) Changzhou Culture Plaza, China by Lichtvision Design
MICROLEDS (p36) Development of microLED by J.Y. LIN and H.X. JIANG, Texas Tech University, USA
HUMAN CENTRIC LIGHTING (p44) Predictions of Melatonin Suppression During the Early Biological Night and Their Implications for Residential Light Exposures Prior to Sleeping by Mark S. REA, Rohan NAGARE & Mariana G. FIGUEIRO, Light and Health Research Center, NY, USA
SPECTRAL ADJUSTMENT TECHNOLOGIES (p52) Metamerism and Spectral Power Distribution Adjustment, the New Paradigm of LED Technology to Improve the Lighting Applications by Francesc JORDANA CASAMITJANA, Spain
DALI (p58) DALI-2 and D4i Certification Support Interoperability and Sustainable Lighting by Paul DROSIHN, General Manager, DALI Alliance, UK
GOOD LIGHT (p62) Good Light for a Healthier and Happier Life by Jan DENNEMAN, Chairman Good Light Group, The Netherlands
LpR91 | May/June 2022
Bright Future for micro-Pixelated Light Prof. Martin DAWSON p20 Recommendations for Daytime, Evening, and Nighttime Indoor Light Exposure p44 Living on the Moon with LED Technologiesp68
Editorial: From micro-LEDs to Integrative Lighting
COMMENTARY (p8) Fear of Falling by Mariana G. FIGUEIRO & Mark S. REA, Icahn School of Medicine at Mount Sinai, Light and Health Research Center (LHRC), New York
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) Bright Future for micro-Pixelated Light Prof. Martin DAWSON, University of Strathclyde, Glasgow, UK compiled by Editors, LED professional
LPS DIGITAL (p32) How to Address the Lighting Industry's Concerns Regarding Product Compliance Online by Marion EBEL, Senior Policy Manager, LightingEurope
LIGHTING DESIGN PROJECT (p34) Daylighting & Artificial Lighting for Humboldt Forum in Berlin by Lichtvision Design
HORTICULTURE – ADVERTORIAL (p42) How CSA Group’s Lighting Center of Excellence is Helping to Test a Brighter Future for Horticulture by KC Fletcher, CSA Group
INTEGRATIVE LIGHTING (p44) Recommendations for Daytime, Evening, and Nighttime Indoor Light Exposure to Best Support Physiology, Sleep, and Wakefulness in Healthy Adults by Timothy M. BROWN, George C. BRAINARD, Christian CAJOCHEN, et al.
UVC (p58) Why UV-C Technology Needs to be a Standard Feature in Building and Renovation Design by Marion EBEL, Senior Policy Manager and Sophia EHMKE, Policy Officer; LightingEurope
CIRCUIT PROTECTION (p60) Lamination Process for Flexible Electronics and LED Technology by Volker KOKULA, R&D Manager at Lumitronix
LUNARK (p64) Living on the Moon with LED Technologies by Daniel HAN, VP Business Development at Beijing Yuji International
LpR90 | March/April 2022
Interview with Zumtobel CEO, Dr. Alfred FELDER p20 UVC Light Sources and Reflectors p50/54 Outlook on the Future of LiFi p46
Including DALI Lighting Award Winners Editorial: Retrospect and Outlook
COMMENTARY (p8) Lighting Design as a Cross-Disciplinary Science by Ian ASHDOWN, Cofounder of All Things Lighting Association (ATLA)
INTERNATIONAL LIGHTING NEWS (p10)
LIGHTING INTERVIEW (p20) "Leading by Example and Respect" Dr. Alfred FELDER, CEO Zumtobel Group compiled by Editors, LED professional
LPS DIGITAL (p30) How to Address the Lighting Industry's Concerns Regarding Product Compliance Online by Marion EBEL, Senior Policy Manager, LightingEurope
LIGHTING DESIGN PROJECT (p32) Wuyuanhe Stadium, China by Lichtvision Design
AWARDS (p40) DALI Lighting Awards 2021 by DALI Alliance
LIFI (p46) An Outlook on the Future of LiFi, from the City where the Compact Disc was Born by Jean-Paul LINNARTZ, Prof. Dr. Ir., Signify and Eindhoven University of Technology
UVC (p50) The Invisible Light Revolution by Paul BLANC, Bolb
UV REFLECTORS (p54) Durability Enhancement of Formable Reflectors for UV-Sterilization by Tobias TITZ, Dr., Project Manager at ALANOD
PRESENCE SENSORS (p58) Presence Sensors for Warehouse Lighting Control – Radar vs PIR by Victor VERBOVSKY, CEO of Intelar
LED DRIVERS (p62) Keeping EMI from LED Drivers Under Control by Frederik DOSTAL, Analog Devices
LpR89 | Jan/Feb 2022
Interview with Professor Harald HAAS p20 Personalized Human Centric Lighting p38 UV-C Disinfection: Research and Applications p48-60
Including the Lecture and Product Award Winners of LpS Digital
COMMENTARY (p8) Shaping the Future of the Lighting Industry Together by Ourania GEORGOUTSAKOU, Secretary General of LightingEurope
INTERNATIONAL LIGHTING NEWS (p10)
LiFi INTERVIEW (p20) "With LiFi, We See a Shift From a Device to a Platform in Lighting" Professor Harald HAAS, University of Strathclyde compiled by Editors, LED professional
LPS DIGITAL (p30) The Zhaga 2021 Updates by Dee Denteneer, Secretary General of the Zhaga Consortium
LIGHTING DESIGN PROJECT (p32) Glass House Garden Room, Seoul by Lichtvision Design
REGULATIONS (p36) What the Lighting Industry Needs to Know about the EU Ecodesign and Energy Labelling Regulations by Elena SCARONI, LightingEurope
HCL (p38) When Human Centric Lighting Gets Personal: p-HCL by Jean-Paul LINNARTZ, Prof. Dr. Ir., Signify and Eindhoven University of Technology; Charikleia PAPATSIMPA, Ph.D., Eindhoven University of Technology
LIGHTING MODULE – ADVERTORIAL (p44) LUXTECH Offers First Compelling Flex Modules Designed to Replace Traditional Rigid Modules: LUXroll (UL Listed) by LUXTECH
UVC RESEARCH (p48) The Virucidal Effects of 405 nm Visible Light on SARS-CoV-2 and Influenza A Virus by Adolfo GARCIA-SASTRE, PhD, Global Health & Emerging Pathogens Institute and Icahn School of Medicine at Mount Sinai; et al.
UVC LEDs (p58) Fundamentals of Disinfection Device Development by Dominik KÖCK, MSc, Würth Elektronik eiSos
LED DRIVERS (p62) How to Use LTspice to Produce Bode Plots for LED Drivers by Keith SZOLUSHA and Brandon NGHE, Analog Devices
LpR88 | Nov/Dec 2021
Interview with Lumileds CEO, Matt RONEY p20 Applications in Focus – Street/Tunnel, Retail, Horticulture p30-48 Wireless Communication – Bluetooth and LiFi p54-84
Including the Good Light Guide Lightfair 2021 Awards
COMMENTARY (p8) Flexible and Future-proof Design of Co-working Spaces by Matteo MENGHINI; Global Work Cluster Manager at ERCO
INTERNATIONAL LIGHTING NEWS (p10)
BUSINESS – INTERVIEW (p20) "We Do The – Never Before Possible" Matt RONEY, Chief Executive Officer of Lumileds, USA compiled by Editors, LED professional
LPS DIGITAL (p28) Zhaga Summit 2021: How Zhaga Addresses Sustainability and Circular Economy by Reinhard LECHELER, ams OSRAM
STREET LIGHTING – FUTURE STUDY (p30) Lighting and Surface Design of Tunnels by Stephan WEGSTEIN, Director Product Marketing Flash; Hakan YILMAZER, Head of Application Management Lighting; Infineon, Germany
TUNNEL LIGHTING – RESEARCH STUDY (p36) Illumination and Simultaneous Germ Reduction with Light by Wilfried POHL, Mag., Director Research; Isabel ARNST, MSc., Research Assistant; Bartenbach, Austria
RETAIL LIGHTING – CASE STUDY (p44) Lighting in Retail — How it Increases Sales by Giovanni VECCHIO, Head of Sales and Marketing for General Lighting, Nichia Europe
HORTICULTURE LIGHTING (p48) Optics and Outlook for Horticulture Lighting by Bernie DANIELS, OEM Sales Manager and Sadi SAFARALIEV, Optical Design Engineer; Carclo Optics, United Kingdom
BLUETOOTH NETWORKS (p54) 9 Resources That Showcase the Realization of Bluetooth Networked Lighting Control in Large-Scale Commercial Environments by Jason MARCEL, Marketing Program Manager, Bluetooth SIG, USA
LIFI COMMUNICATION (p58) Selecting a LiFi Standard when Building your LiFi Product by Musa UNMEHOPA, Head of Ecosystems and Alliances for LiFi at Signify, The Netherlands
GOOD LIGHT GUIDE (p62) Good Light Guide for Healthy, Daytime-active People by the Good Light Group
LpR87 | Sept/Oct 2021
Interview with Cree LED President, Claude DEMBY p22 Innovative Automotive and Disinfection Focus p28-46 Enlighten Your Clock – How Your Body Tells Time p52
COMMENTARY (p8) Lighting Future by Stephan WEGSTEIN, DI; Business Development Manager EMEA for Flash Memories at Infineon Technologies
INTERNATIONAL LIGHTING NEWS (p10)
LPS DIGITAL (p20) ipRGC Sensitive Optimized LED Spectrum and Its Application in Color Temperature Lighting Solutions by Xavier DENIS, Nichia
BUSINESS – INTERVIEW (p22) Powering Customer Growth Through LED Innovation Claude DEMBY, President of Cree LED, USA compiled by Editors, LED professional
AUTOMOTIVE (p30) Projected Safety with High-resolution LED Headlamp Concept by Stefan GROETSCH, Dipl.Ing., Principal Key Expert Application Fields; Joachim REILL, Dipl. Ing., Senior Director; System Solution Engineering at ams OSRAM
DUAL FUNCTION ILLUMINATION (p34) Illumination and Simultaneous Germ Reduction with Light by Thomas WALENTOWSKI, Dipl.-Ing.(FH); Head of Business Unit Light & Sanitization and Head of Marketing at AURORA Lichtwerke
UV MEASUREMENT (p36) Measurement Systems and Calibrations for UV Radiation by Denan KONJHODZIC, Dr., Product Manager at Instrument Systems
UV LED CURING (p40) High Performance LED Sources Enable Innovation in Manufacturing by David ARMITAGE, Scientist, Baldwin UV
TERMINAL BLOCK - ADVERTORIAL (p48) Safe and Stable Connection with the SMD PCB Terminal Block from WAGO's 2065 Series by WAGO
SOLAR SIMULATION (p50) LED Solar Simulation Technologies by Sam ROGERS, Content Writer and Editor at Ushio; Fumihiko ODA, Dr., SSL Sales Strategy Deputy Manager at Ushio
GOOD LIGHT (p54) Personal Good Light – The Second LED Revolution by Jan DENNEMAN, Chairman Good Light Group
ENLIGHTEN YOUR CLOCK (p56) How Your Body Tells Time by Weinzaepflen, C.; Spitschan, M. (Ed.) (2021). DOI: 10.17605/OSF.IO/ZQXVH
LpR86 | July/Aug 2021
Business Interview with SSC's Founder & CEO Chung-Hoon LEE p22 DALI+ Interview with Alliance General Manager Paul DROSIHN p30 Disinfection with UV-C Light Sources and Materials p44, p48
COMMENTARY (p8) Dear Lighting Enthusiasts! by Andreas SCHULZ, Lighting Designer, Germany
INTERNATIONAL LIGHTING NEWS (p10)
LPS DIGITAL (p20) Healthful and Integrative Lighting; Lighting Metrology and Recommendations for Non-Visual Effects of Light by Luc J.M. SCHLANGEN, Ph.D.
BUSINESS – INTERVIEW (p22) The Tiger Leaves Its Skin Behind Chung-Hoon LEE, Founder and CEO of Seoul Semiconductor, South-Korea compiled by Editors, LED professional
DALI ALLIANCE – INTERVIEW (p30) DALI+ Insights Paul DROSIHN, General Manager, DALI Alliance, UK compiled by Editors, LED professional
SUSTAINABILITY (p34) Repro-light: Sustainable Illumination for People and the Environment by Wilfried POHL, Mag., Director Research; Johannes WENINGER, Dipl.-Ing., Researcher; Maximilian DICK, MSc., Researcher; Bartenbach, Austria
UV-C TECHNOLOGIES (p44) Disinfection with UV-C LED and Optics Technologies by Jonatan KLEE, UV-C LED Account Manager at Nichia, The Netherlands/Germany/Japan
UV-C DESIGN - ADVERTORIAL (p48) Influence of UVC LED Disinfection on Polycarbonate Materials by Paul NOWATZKI, Senior Product Expert, Covestro; Rajul RANDIVE, Director Application Engineering, Crystal IS; Sean BRANAGAN, Process Engineering Manager, Crystal IS; USA
THERMOPLASTICS (p52) Routes in the Development of Simulation Models for Light Scattering Thermoplastics by Nathalie PFINGSTGRAEF, MSc., Optical Engineer; René KOGLER, Dr., Head of Product Management; Arne SCHMIDT, MSc., Head of Technical Marketing Automotive; Röhm, Germany
THERMAL SIMULATION (p58) Parametric Design Optimization of an LED System Using Engineering Simulation in the Cloud by Naghman KHAN, Dr., Senior Product Marketing Engineer at SimScale
SPECTROSCOPY (p60) Spectroscopy with Broadband visible-NIR and Multi-chip Narrowband SWIR LEDs by Sam ROGERS, Content Writer and Editor at Ushio; Fumihiko ODA, Dr., SSL Sales Strategy Deputy Manager at Ushio
LED DRIVER (p64) Dimmable Non-isolated LED Driver with Highest Light Quality and Efficiency by Michael WEIRICH, Dr., Director Technical Marketing Lighting, Infineon Technologies
LpR85 | May/June 2021
LED Business Interview with SAMSUNG's SVP Un Soo KIM p22 Circular Economy in Lighting Design with Mark RIDLER p30 Breakthroughs: ipRGC Tuned LEDs and DALI+ Networks p42, p48
COMMENTARY (p8) Science in the Spotlight for the International Day of Light 2021 by Prof. John DUDLEY, IDL 2021 Steering Committee Chair, France
INTERNATIONAL LIGHTING NEWS (p12)
LPS DIGITAL (p20) Lighting & Biology with Prof. Robert LUCAS, UK
LED BUSINESS – INTERVIEW (p22) LED Business in Focus Un Soo KIM, Senior Vice President of SAMSUNG Electronics, South-Korea compiled by Editors, LED professional
CIRCULAR ECONOMY – INTERVIEW (p30) Circular Economy from the Perspective of Lighting and Project Design with Mark RIDLER, Head of Lighting at BDP, UK compiled by Editors, LED professional
HCL LIGHTING SOLUTION (p36) Bringing the Benefits of Natural Light Indoors by Cristina TANASE, PhD, General Manager NatureConnect by Signify; Inge van der WOUW, Segment and Marketing Manager NatureConnect by Signify; Bianca van der ZANDE, PhD, Senior Scientist/Topic Lead HCL Signify Research, The Netherlands
HCL LED TECHNOLOGY (p42) ipRGC Sensitivity Optimized LED Spectrum and its Application in Color Temperature Tunable Solutions by Menno SCHAKEL, Technical Marketing Engineer at Nichia Chemical Europe GmbH; Co-Authors: Sadakazu WAKUI, Kenji ASAI, Shigeharu YAMAUCHI, Xavier DENIS, The Netherlands/Germany/Japan
DALI+ AND WIRELESS TO DALI GATEWAYS (p48) DALI+ and Wireless to DALI Gateways Increase Connectivity Options for DALI Lighting Networks by Paul DROSIHN, General Manager, DALI Alliance, UK
WIRELESS CONTROL NETWORKS (p52) Why Wireless Control Networks Are Taking Over Commercial Lighting by Jason MARCEL, Marketing Program Manager, Bluetooth SIG, USA
LASER LIGHTING TECHNOLOGY (p56) High-power Diode Lasers and Rotating Phosphor Converters Revolutionize the White Light Generation Process by Simon BRITTEN, Dr.-Ing., Technology Manager, Laserline GmbH, Germany
THERMAL RESEARCH (p60) Package Level Thermal Analysis of White Light-emitting Diodes Based on Local Phosphor Particle Opto-thermal Behavior by Mohammad AZARIFAR, MSc., Researcher; Ceren CENGIZ, BSc., Researcher; Dr. Mehmet ARIK, Professor | EVATEG Center Ozyegin University, Turkey
LpR84 | Mar/Apr 2021
NICHIA Celebrates its 65th Year of Continuous Innovation p22 Key Experts Shed Light on UV-C Disinfection p36 New LiFi Communication Standards Open Market Access p42
COMMENTARY (p8) Good Light is as Important as Good Food and Good Air by Jan DENNEMAN, Chairman of the Good Light Group, The Netherlands
INTERNATIONAL LIGHTING NEWS (p10)
LPS DIGITAL (p20) LiFi Seminar, China
INTERVIEW - NICHIA’S 65th ANNIVERSARY (p22) Hiroyoshi OGAWA, President and CEO of NICHIA, Japan compiled by Editors, LED professional ECODESIGN (p30) Replaceability of Light Sources and Separate Control Gears by Carsten MÖLLERS, Dipl.-Kfm., CEO of Green Gems; Werner MOTZ, Electrical Engineering Technician & Master at BASF
DISINFECTION (p36) UV-C: Disinfection Benefits, Safety, Comfort and Proof Points by Georg NIEDERMEIER, Dr., EHS Professional at OSRAM; Armin KONRAD, Dr., Senior R&D Director at LEDVANCE; Lukas KASTELEIN, Ing., Standardization and Regulations Professional at Signify, Germany & The Netherlands
WIRELESS COMMUNICATION (p42) A Closer Look at LiFi Standardization by Musa UNMEHOPA, Head of Ecosystems and Alliances for LiFi at Signify, The Netherlands
COLOR CONTROLLER (p48) 13-Bit RGBW Color Control for Accurate High-Quality Architectural & Stage Lighting by Keith SZOLUSHA, LED Driver Applications Manager at Analog Devices, USA
OUTDOOR LIGHTING (p54) New LED for Outdoor Lighting by Markus HOFMANN, DI, Senior Key Expert for General Lighting at Osram Opto Semiconductors, Germany
LED TECHNOLOGY (p58) Multi-Chip LEDs by Sam ROGERS, Content Writer and Editor at Ushio; Fumihiko ODA, Dr., SSL Sales Strategy Deputy Manager at Ushio, The Netherlands & Japan
SURGICAL LIGHTING (p62) Why High-End Surgical Lights Have Become Imperative Invasive Equipment by Ashish GUJARATHI, MBA, SEO Analyst at Allied Market Research, USA
LpR83 | Jan/Feb 2021
Winning the Controls Business With Bluetooth Mesh p22 Design Backgrounds for China's Most Prestigious Applications p40 A New Lighting Paradigm With Double Dynamic Lighting p52
COMMENTARY (p8) From Kelly to Double Dynamic Lighting by Henrik CLAUSEN, Director at Fagerhult Lighting Academy, Sweden
INTERNATIONAL LIGHTING NEWS (p10)
LPS DIGITAL (p20)
INTERVIEW - TOWARDS BLUETOOTH MESH (p22) Patrick DURAND, Worldwide Technical Director, Future Lighting Solutions (FLS), Canada compiled by LpR Editors LUMINAIRE DEVELOPMENT (p30) Measuring the User Acceptance: User-centered Methods and Co-creation Processes in Luminaire Development by Ganix LASA, Ph.D., Researcher at the Mondragon University, Spain
LIGHT AND HEALTH (p36) Live Healthier With Light by Paula MISEIKYTE, Scientific Lead at LYS Technologies, Denmark
LIGHTING DESIGN (p40) Latest Lighting Design Trends for Top Grade Chinese Hotels by Carry YU, General Manager & Design Director of CSLC International Lighting Design Co., China
HUMAN CENTRIC LIGHTING (p48) Human-Centric Lighting Will Usher in Another Once-in-a-Century Golden Era for General Lighting by James TU, Chairman & Chief Executive Officer of Energy Focus, USA
DOUBLE DYNAMIC LIGHTING (p52) Dynamic Lighting Complementing the Dynamics of the Sky and Sunlight by Ellen Kathrine HANSEN, Ph.D., Assoc. Prof., Head of MSc Program and Lighting Design Research Group at Aalborg University, Copenhagen, Denmark
MICRO-LED DISPLAYS (p58) III-Nitride Nanowire microLEDs on Si Substrate for Next Display Technology by Ha Quoc Thang BUI, Ph.D.(c), Researcher, Department of Electrical and Computer Engineering, New Jersey Institute of Technology, USA
SIMULATION (p62) Early Stage Computational Fluid Dynamics (CFD) Design Simulation by Naghman KHAN, Dr., Technical Writer at SimScale, Germany
UV-LED CURING (p64) UV-LED Curing Process and Applications by Stacy HOGE, Marketing Communications Manager at Phoseon Technology, USA
DYNAMIC LIGHTING (p68) Planar Steerable Luminaires on the Way to Replacing Rotating Projectors by Noé BORY, MSc., Lead Lighting R&D Engineer at Insolight, Switzerland
LED TESTING (p72) Short-Pulse Testing Eliminates Self-Heating Errors to Produce True L-I Graphs by Jeff HULETT; Markus SCHNEIDER, Dr.; Founder and CTO of Vektrex (USA); Characterization of LED Products at OSRAM Opto Semiconductors (Germany)
LpR82 | Nov/Dec 2020
Are Lighting Controls Ready for Internet of Things p24 Understanding the Power Formula in the New Ecodesign Regulation p30 Innovative Ways in Lighting Fixture Designs p40
COMMENTARY (p8) Future Strategic Directions for the Lighting Industry by Ourania GEORGOUTSAKU, Secretary General of LightingEurope, Belgium
INTERNATIONAL LIGHTING NEWS (p10)
REGULATION NEWS (p21)
LPS DIGITAL (p22)
INTERVIEW - IoT Lighting Controls (p24) Kristopher EVANS, Market Development Manager for Internet of Things (IoT) at Cree Lighting, USA compiled by Arno GRABHER-MEYER, LED professional ECODESIGN REGULATION (p30) The Energy Efficiency Calculation for “Light Sources” Under the New Ecodesign Regulation (EU) 2019/2020 by Fabio PAGANO, Technical Manager at ASSIL (Italian Association of Lighting Manufacturers), Italy
LIGHTING STANDARDS (p36) Opportunities and Obstacles While Exporting Luminaires to North America and the Middle East byHans LASCHEFSKI, Dr., Industry Marketing Manager – Lighting EMEA at UL, Germany
LIGHTING DESIGN (p40) LED Lighting Fixture Design Between Tradition and Innovation by Daria CASCIANI, Ph.D. and Manuela CELI, Ph.D., Assistant Professor abd Associate Professor both of Politecnico di Milano - Department of Design, Italy
SPECTRAL ENGINEERING (p48) Chromaticity Shift Behavior in LED Packages by Monica HANSEN, Ph.D. and J. Lynn DAVIS, Ph.D., Principal Engineer at LED Lighting Advisors and Director of the Nano-enabled Devices Program at RTI International, USA
THERMAL ANALYSIS (p54) Analysis of Heat Paths in LED Retrofit Lamps by Peter W. NOLTE, Ph.D., Research Team Leader at Fraunhofer Application Center for Inorganic Phosphors, USA
MICRO-LED DISPLAYS (p58) Micro-LED Displays: New Opportunities for Nitride-Based Red LED Technologies by Atsushi NISHIKAWA, Dr. and Kazuhiro OHKAWA, Prof., CTO of ALLOS Semiconductors and Professor at King Abdullah University, Germany and Saudi Arabia
PHOSPHOR RESEARCH (p64) Quo Vadis Biogenic Phosphors? by Rubén D. COSTA, Prof., Professor, Chair of Biogenic Functional Materials at the Technical University of Munich (TUM), Germany
UV-C LIGHT SOURCES (p68) Characterization of UV Radiation Sources by Marc BALLBÈ, CEO of Asselum, Spain
UV-C DISINFECTION (p72) Appropriate Uses for UVC LED Technology for Disinfection Applications by Theresa L. THOMPSON, Ph.D., Head of Application Scientist at Phoseon, USA
HORTICULTURE LIGHTING (p76) Optimum LED Lighting for Green Walls by Amardeep M. DUGAR, Ph.D., Founder and Principal of Lighting Research and Design, India
LpR81 | Sept/Oct 2020
The Future Potential of LiFi Communication p24 How the Lighting for Good Initiative will Change Our Minds p34 Modern Lighting Design is Inspired by The Poetics of Darkness p76
COMMENTARY (p8) Visual Performance and Cognition by Stephen A. MASON, Dr. Founder and Head of Sustainable Eye Health, Australia
INTERNATIONAL LIGHTING NEWS (p10)
REGULATION NEWS (p21)
LPS DIGITAL (p22)
INTERVIEW - LIFI COMMUNICATION (p24) Musa UNMEHOPA, Head of Ecosystems and Strategic Alliances for LiFi at Signify, The Netherlands compiled by Arno GRABHER-MEYER, LED professional
LIFI PATENTS (p30) Thrust Area Analysis of LiFi Communication Patents by Günther SEJKORA, Dr., R&I Manager at Luger Research | CEO of Items, Austria
CIRCULAR ECONOMY (p34) Lighting for Good by Nicolas MARTIN & Tiphaine TREINS, Lighting Manager at LVMH & Founder and Principal of Temeloy Advanced Lighting Design, France & UK
ECODESIGN AND ENERGY LABELLING (p38) New Requirements for Energy Efficiency and Labelling of Lighting by Fabian FLIGGE, Product Expert at TÜV SÜD, Germany
LIGHTING INDUSTRY SCENARIOS (p40) Future Scenarios of the Lighting Industry: Towards a More Sustainable and Innovative Market by Ganix LASA, Ph.D., Professor at the Mondragon University, Spain
LED STUDY (p46) Full Spectrum LED Study 1.0 by Daniel NEVES PIMENTA, Arch. & Lisa-Marie WADLE, M.Sc., Project Engineer & Researcher at Fraunhofer IBP, Germany
AVERAGE SPECTRAL DIFFERENCE (p52) Average Spectral Difference -- New Metric to Evaluate the Naturalness of Artificial Light Sources by Brian CUMPSTON, Dr., VP of Solutions Development at Bridgelux, USA
SPECTRAL ENGINEERING (p58) Facing the Challenges of Spectral Engineering with a New Software Tool by Adrià HUGUET-FERRAN, Ph.D. Candidate at University of Barcelona | CTO at Kumux, Spain
THERMOGRAPHY OF LED MODULES (p64) Transient Infrared Thermography for Thermal Conduction Path Analysis of LED Modules by Peter W. NOLTE, Dr., Research Team Leader at Fraunhofer Application Center for Inorganic Phosphors, Germany
AUTOMOTIVE LIGHTING (p68) Choosing the Right Inductor Technologies for Automotive LED Lighting by Bill GISSELER, Senior Applications Engineer at TDK Corporation of America
LED LAMP MR16 (p72) Combination of an Advanced Thermo-Transfer Technology and a Novel High Impact Light Source to Improve MR16 Products by Bertrand OUELLET, Founder and Owner of LUBO Lighting, Canada
LIGHTING DESIGN I (p76) The Poetics of Darkness by Monica LLAMAS & Florencia CASTRO, both of MFA Lighting Design, B.A. of Architecture, USA
LIGHTING DESIGN II (p82) Gaming in the Lighting Sector -- A Game Changer? by Wolfgang BERNECKER, Founder and CEO of FutureACT, Austria
LpR80 | July/Aug 2020
When Circular Economy Meets the Lighting Industry p 66 Ultraviolet Light for Disinfection and Sterilization p 82 Using Social Media Data in Modern Lighting Design p56
COMMENTARY (p8) The Basic Sales Arguments for LED Lighting by Donatas STOČŪNAS, Commerce Manager at ATKO
INTERNATIONAL LIGHTING NEWS (p10)
REGULATION NEWS (p21)
LPS DIGITAL (p22) Designing with Dynamic Light Textures -- Enlightening Designers
INTERVIEW - REACTIVE OXYGEN SPECIES (p24) Scott ZIMMERMAN, Founder and Chief Research Officier (CRO) of Silas, USA compiled by Arno GRABHER-MEYER, LED professional
ATOMIC LAYER DEPOSITION (p32) Atomic Layer Deposition -- Leading Thin Film Coating Technology for SSL by Minna TOIVOLA, D.Sc.(Tech.), Marketing Manager at Picosun
HCL LED COMPONENTS | Advertorial (p38) Optimized Light for Circadian Rhythm Synchronization Enhancing Indoor Lifestyle by SAMSUNG Electronics
DEEP ULTRAVIOLET LEDS (p40) The Key Technology of Deep Ultraviolet (DUV) LEDs and Its Application by Junxi WANG, Dr., et al, Researcher at Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China
TUNABLE WHITE TECHNOLOGY (p48) Introduction of On-BBL Tunable White Technology by Tomokazu NADA, Managing Director at ZIGEN Lighting Solutions
LIGHTING DESIGN & SOCIAL MEDIA (p56) Ambient Lighting Design for Persuasive Environments Using Social Media Data by Yasaman MAVVAJ, MSc., Product Designer at Koerner Design
CIRCULAR ECONOMY (p 66) When Circular Economy Meets the Lighting Industry (LCA) by Deidre WOLFF, MSc., Project Engineer at Catalonia Institute of Energy Research (IREC)
ECODESIGN & ENERGY LABELLING (p74) EU's Ecodesign and Energy Labelling Regulations by Axel BASCHNAGEL, MarCom Manager at LightingEurope
HORTICULTURAL LIGHTING (p76) Specifying LED Colors for Horticultural Lighting by Ian ASHDOWN, P.Eng.(Ret), FIES, President and Senior Scientist for SunTracker Technologies
DISINFECTION AND STERILIZATION (p82) UV LEDs in Disinfection and Sterilization by Norman BARDSLEY, Dr., Chief Analyst of the International Solid-State Lighting Alliance (ISA)
LIDAR TECHNOLOGY (p88) Open Source LIDAR Prototyping Platform by István COSOMORTÁNI et al, FPGA Design Engineer at Analog Devices
LpR79 | May/June 2020
Are Micro-LEDs Taking Over p30 The Ultimate LED Phosphor Report p48 Are there Limits in Flexible Lighting Systems p70
COMMENTARY (p8) Future-Proofing - An Illusion in Lighting? by Daniel Neves PIMENTA, Architect & Researcher at Fraunhofer Institute for Building Physics
INTERNATIONAL LIGHTING NEWS (p10)
REGULATION NEWS (p27)
LPS DIGITAL - VIDEOS (p28) Personal Table Light - Intelligent Workspace Lighting
TECH-TALKS BREGENZ - MICRO LEDS (p30) Hani KANAAN, Smart Lighting Technologies Business Development at CEA-Leti, France compiled by Arno GRABHER-MEYER and Dr. Günther SEJKORA, LED professional
COLOR STABILITY (p38) Degradation of Green High-Power LEDs - Influence on Color Stability of Multi-Channel Luminaires by Alexander HERZOG, MSc, Research Assistant at TU Darmstadt
UV Disinfection | Advertorial (p46) Characterization of UV Sources for Disinfection by GL OPTIC
LED PHOSPHOR TRENDS (p48) Current Trends in LED Phosphor Developments by Lin ZHANG, Dr., Chief Technology Officier at Beijing Nakamura Yuji Science and Technology
THERMAL DESIGN (p58) Case Study: Thermal Analysis of an LED Design by Arnaud GIRIN, Technical Marketing Specialist at SimScale
FUTURE PROOF SOLUTIONS (p62) Cost Benefit of Future Proof Solutions by Walter WERNER, Dr., Owner and CEO, Director at Werner Management Services
DC/DC CONVERTERS (p 66) PCB Space-Constraint Woes Eliminated by 2 MHz Monolithic, Buck-Boost DC/DC Converter and LED Driver by Kyle LAWRENCE, Application Engineer at Analog Devices
FLEXIBLE LIGHTING SYSTEMS (p70) New Flexible Lighting Systems Based on Atmospheric Plasma Metallization by Yaser HAJ-HMEIDI, Development Specialist at Lumitronix
LIGHTING CONTROLS (p74) Lighting Controls - Futureproofing and Open Standards Lead the Way by Pal KARLSEN, Senior Analyst in the Home, Building and City Technologies Group at OMDIA
LpR78 | March/April 2020
Unified Glare Rating p 30 Photobiomodulation p 34 The Perfect Light p 48
Editorial: Individualization of Connected Lighting
COMMENTARY (p8) Why Comfortable Lighting Needs New Quality Parameters by Kenneth MARTIN, Dipl.-Ing.(FH), Light Source Specialist at Zumtobel Group
INTERNATIONAL LIGHTING NEWS (p10)
REGULATION NEWS (p29)
UNIFIED GLARE RATING (p 30) Discomfort Caused by Glare from Luminaires with a Non-Uniform Source Luminance by Peter THORNS BSc(Hons), CEng, FCIBSE, FSLL, Head of Strategic Lighting Applications and Global Lighting Applications at Zumtobel Group
TECH-TALKS BREGENZ Photobiomodulation (p 34) Jürgen HONOLD, Program Director at Seaborough Life Sciences, The Netherlands compiled by Arno GRABHER-MEYER, LED professional
FLICKER DIRECTIVE (p 42) New Directive in Europe: Flicker of LED Lighting by Peter ERWIN, CEO and Design Engineer at Der Lichtpeter
THE PERFECT LIGHT (p 48) In Search of the Perfect Light by Stephen MASON, Dr., Managing Director at Sustainable Eye Health
TUNABLE SPECTRUM (p 54) A New Method to Tune an LED Spectrum by Daniel HAN, Business Development Director at Beijing Yuji International
CIRCADIAN ENTRAINMENT (p 60) LED Lighting for Circadian Entrainment by Bill CHAN, M.Sc., President of LiteController
LED TECH IMPLEMENTATION (p 64) How to Implement the Latest LED Technology for a Successful Application by Marc JUAREZ, Technical Director Europe of Seoul Semiconductor
ADVERTORIAL | Measurement Devices (p 68) Integrated Solution for Human Centric Lighting (HCL) / Integrative Lighting Assessment by Gigahertz-Optik
THERMAL MEASUREMENT (p 70) Challenges for Measuring Multichip LED Light Engines for Interior Lighting Applications by Mete MUSLU, MSc, Research Assistant at Ozyegin University
DRIVER EFFICIENCY (p 76) How to Increase the Efficiency of Two-Stage Drivers by Dr. Michael WEIRICH, Senior Manager Application Engineering at Infineon Technologies
TRACK-LIGHT DRIVER (p 80) Designing an Invisible Driver for High-End Track Lights by Mickey MADSEN, Dr., CEO of Nordic Power Converters
COMMENTARY (p8) Paradigm Changes in Lighting by Fabien Bubendorff, MSc, Dipl. Eng., CEO of Origin Services
INTERNATIONAL LIGHTING NEWS (p10)
REGULATION NEWS (p27)
ECODESIGN REQUIREMENTS (p28) Limits for Flicker and Stroboscopic Effects by Dr. Günther Sejkora, Research & Innovation Manager at Luger Research e.U.
TECH-TALKS BREGENZ (p32) 32 Dr. Christoph Wächter, Senior Scientist at Fraunhofer IOF, Germany compiled by Guenther Sejkora, LED professional
HCL LEDs (p40) LED Innovations for the Improvement of HCL Luminaires by Menno SCHAKEL, Technical Marketing Engineer at Nichia
LED MANUFACTURING (p46) Volume Manufacturing of Mini and Micro LEDs by Sean Kupcow, Senior R&D Engineer at Rohinni LLC
OPTICAL FILMS (p52) FF-MOEs — The Potential of Tailor-made Light-directing Structures on Film for Enabling New Design Possibilities for Luminaires by Dr. Claude LEINER, Key Researcher at Joanneum Research
3D PRINTING (p56) New Disruptive Fabrication Technologies for a Novel Design Approach by Enrico Cozzoni, PhD, Senior Scientist and Aerospace Engineer at Grado Zero Espace
LUMINARY OF THE FUTURE (p62) User-centered Design Approach to Develop the Luminary of the Future by Ganix Lasa, PhD, Researcher at Mondragon University
VOICE CONTROLLER (p68) Offline Lighting Voice Controller — An Alternative to Voice Assistants by Cezary Skotak, Owner and CEO of CEZOS, Poland
SMART CONNECTOR (p72) Smart Connector — A New Solution for Smart Lighting by Ing. Rainer Reiter & Dr. Hugo Pristauz, CEO and CTO at Bluenetics
PERSONALIZED WORKPLACES (p78) Benefits of Personalized Workplaces Solution by Toni Anttila & Mirva Saarijärvi, Head of Workspaces at Ensto, Head of Marketing & Communication
LpR76 | Nov/Dec 2019
Tech-Talks Bregenz: Ruairí O'Brien Research: Freeform Micro-Optics Technologies: Tuneable White & Smart Lighting Special Topic: Peripheral Discomfort Glare
COMMENTARY Personal Lighting Profiles Might Be the Key to Creating a Natural "Work Light Balance" by Henrik Clausen, Fagerhult Lighting Academy (p 08)
TECH-TALKS BREGENZ Ruairí O'Brien, Founder of Ruairí O'Brien Lighting Design compiled by Dr. Guenther Sejkora, LED professional (p 30)
RESEARCH Micro-Optics for Efficient LED Spotlights with Arbitrary Farfield Distributions by Dr. P. Schreiber and Dr. Ch. Waechter et al., Fraunhofer IOF (p 40)
EVENTS Spread Spectrum Frequency Modulation Reduces EMI by Arno Grabher-Meyer, LED professional (p 48)
TECHNOLOGIES A White Light Tuning Strategy that Fuels HCL by Wouter Soer, Lumileds (p 68)
A New LED Controller Technology to Expedite the Next Level of Smart Lighting by Kurt Marquardt, Infineon Technologies (p 74)
Fluorescence-Free Radiant Flux Measurement of UV LEDs by M. Clark, R. Zuber & M. Ribnitzky, Gigahertz-Optik (p 78)
REGULATIONS New Ecodesign Regulation on Flicker and Stroboscopic Effect in LED Lighting by M. Przybyla & P. Czarnecki, GL Optic (p 82)
SPECIAL TOPICS Measure Influence of Discomfort Glare on Task Performance Using the Stroop Task to Circumvent Participant Assessments by Mads Mårbjerg, Buro Happold Engineering Berlin (p 86)
LpR75 | Sept/Oct 2019
Tech-Talks Bregenz: Wilfried Kramb Research: IR Thermography & Micro Optics Technologies: EMI Reduction & Thin LED Modules Special Topics: Circular Economy
COMMENTARY Providing Better Light Should Still be the Focus of the SSL Industry by J. Norman Bardsley, PhD, Bardsley Consulting (p 08)
TECH-TALKS BREGENZ Wilfried Kramb, Interior & Lighting Designer, a∙g Licht compiled by Dr. Guenther Sejkora, LED professional (p 32)
RESEARCH Temperature Profiling of Secondary LED Optics by Infrared Thermography by Peter W. Nolte et al., South Westphalia University of Applied Sciences, Fraunhofer Application Center for Inorganic Phosphors & TRILUX (p 38)
On Life Cycle Assessment to Quantify the Environmental Impact of Lighting Products by V. Ferreira, D. Wolff, & C. Corchero,Catalonia Institute for Energy Research (IREC) (p 44)
Design and Tolerancing of Freeform Microlens Arrays for Solid-State Lighting by Oscar Fernándezet al., CSEM (p 58)
TECHNOLOGIES Spread Spectrum Frequency Modulation Reduces EMI by Greg Zimmer & Kevin Scott, Analog Devices (p 64)
12 Years of Progress in Manufacturing White LEDs by Rob Alferink, PicusLED & Arno Grabher-Meyer, LED professional (p 70)
APPLICATIONS Inspiration from a Parallel Universe: Reviving the Vision of OLED by Matt Hanbury, Lightly Technologies (p 76)
Lighting the Way to Greater Well-Being by Makoto Ogawara & Giovanni Vecchio, Nichia (p 82)
SPECIAL TOPICS The Adverse Ecological Impacts of Light Pollution: LEDs' Role in Mitigation by Dr. C. J. Macgregor & Dr. D. M. Evans, University of York & Newcastle University (p 86)
LpR74 | July/Aug 2019
Tech-Talks Bregenz: David Schmidmayr Research: Visual Light Communication & Surgical Light Technologies: Machine Vision & Optical Materials for UV Special Topics: Horticulture Lighting
COMMENTARY Selecting the UV LED Wavelength for Purification Applications by Patrick Durand, Future Lighting Solutions (p 08)
TECH-TALKS BREGENZ David Schmidmayr, CEO, SANlight Research compiled by Dr. Guenther Sejkora, LED professional (p 24)
RESEARCH Lighting System Based on Visible Light Communications by René Grabher & Guido Piai, Interstate University of Applied Sciences NTB (p 32)
Tissue-Specific & Biodynamic Control of Surgical Lights - a Future Lighting Concept by Prof.Dr.Dipl-Phys. P. Belloni & A. Gaertner, University Furtwangen (p 40)
EVENTS The Trend Towards Improved Light Quality Continues at LFI by Arno Grabher-Meyer, LED professional (p 46)
TECHNOLOGIES LED Driver for High Power Machine Vision Flash by Keith Szolusha & Kyle Lawrence, Analog Devices (p 62)
Transparent Material Considerations for UV Optics in Horticultural Lighting Applications by Justine Galbraith & Sharayah Follett, Kopp Glass (p 66)
APPLICATIONS Growing Crops Under the Best Possible Conditions by A. Kok, B. Van Zaal, Smart Greenhouses, B. Meulblok, Ophir (p 72)
Combining Sunlight and LED Grow Lights for Ultimate Plant Growth by Luis Rivera, Advanced LED Lights (p 80)
LpR73 | May/June 2019
Tech-Talks Bregenz: Julian Carey Research: LEDs for Harsh Environments Research: Measurement of Tj Special Topic: LiFi & AI
COMMENTARY Care, Caution & Awareness Are Needed When Using LED Lights by Kyra Xavia, Light and Lighting Research Consortium (p 08)
ORGANIZATION INSIGHTS: Horticultural Lighting - The Root to International Standards CIE, Division 6 (p 30)
Zhaga-D4i Certification Signals Plug-and-Play Interoperability Zhaga and DiiA (p 32)
TECH-TALKS BREGENZ Julian Carey, Product & Technical Marketing Mganager at SLD Laser compiled by Dr. Guenther Sejkora, LED professional (p 34)
RESEARCH Hermetic Polymer-Free White LEDs for Harsh Environments by Dr. Michael Kunzer et al., Fraunhofer Institute for Applied Solid State Physics (p 42)
New Approach for Accurate and Fast Measurement of LEDs Tj by Prof. Mehmet Arik et al., EVATEG / Ozyegin University (p 48)
SPECIAL TOPIC LiFi as a Paradigm-Shifting 5G Technology by Prof. Harald Haas, University of Edinburgh (p 54)
AI & Lighting by Henri Juslén, Omar Nasir &Javad Nouri, Helvar (p 62)
LpR72 | Mar/Apr 2019
Tech-Talks Bregenz: Scott Wade Research: Freeform Microlens Arrays Technologies: Smart Buildings DC Grids Applications: Office Lighting Controls
TECH-TALKS BREGENZ Dr. Scott Wade, Technical & Certification Manager, DiiA compiled by Dr. Guenther Sejkora, LED professional (p 34)
RESEARCH Semi-Empirical Characterization of Freeform Microlens Arrays by Oscar Fernández et al., CSEM & ANSYS (p 42)
Thermal and Optical Challenges for SSL in Automotive Applications by Umut Zeynep Uras et al., Ozyegin University & FARBA Corp. (p 50)
TECHNOLOGIES LED Lighting Systems in Smart Buildings with DC Microgrids by Carsten Moellers, Abalights (p 60)
APPLICATIONS Technologies for Shared Office Space by Matthias Kassner, EnOcean GmbH (p 66)
LpR71 | Jan/Feb 2019
Tech-Talks Bregenz: Octavio Perez Research: Medical & Human Centric Lighting Technologies: Voice Control & Advanced LEDs Special Topics: Healthy Light & Blue Light Issues
COMMENTARY Well-Being, Light and Exhibition Lighting by Prof. Dario Camuffo, Polytechnic of Milan & Tech. Committee for Cultural Heritage (p 08)
CIE RESEARCH ACTIVITIES(p 28)
ORGANIZATION NEWS: LightingEurope (p 30)
TECH-TALKS BREGENZ Dr. Octavio Perez, Adjunctant Researcher, Mt. Sinai Hospital compiled by Dr. Guenther Sejkora, LED professional (p 32)
RESEARCH Implications for Human-Centric Lighting Design in Tropical Nursing Homes: A Pilot Study by Dr. Szu-Cheng Chien, Singapore Institute of Technology (p 40)
Flex LED Based Smart Light System for Healing of Chronic Wounds by David Kallweit, CSEM (p 48)
TECHNOLOGIES Voice Controlled Lighting that Protects Privacy and Data by Genia Shipova, Snips (p 54)
Circadian-Friendly Light Emitters: From CCT-Tuning to Blue-Free Technology by Aurelien David, Soraa (p 58)
Technical Progress Improves Efficacy of Green LEDs by 40% by Dr. J.-P. Ahl & Dr. A. Bauer, Osram Opto Semiconductors (p 64)
SPECIAL TOPICS Healthy Light - LED Technology for Health and Care Applications by Peter Haumer, Lumitech/Kiteo (p 68)
Melanopic Green - The Other Side of Blue by P. Eng. (Ret.) Ian Ashdown, SunTracker Technologies (p 74)
LpR70 | Nov/Dec 2018
Tech-Talks Bregenz: Dr. Maja Grubisic Research: Wellness & Performance, Light Pollution Technology : DC Grids, Smart Lighting & IoT Applications: LEDs for Horticulture Lighting
COMMENTARY An Industry at a Crossroads by Arno Grabher-Meyer, LED professional (p 08)
CIE RESEARCH ACTIVITIES(p 28)
TECH-TALKS BREGENZ Dr. Maja Grubisic, Researcher, Free University Berlin & Leibniz-Institute compiled by Dr. Guenther Sejkora, LED professional (p 30)
RESEARCH Lighting and Emergency Department Clinician Wellness and Performance Improvement by Octavio L. Perez, Ph.D, Mount Sinai Hospital (p 38)
Hazard or Hope? LEDs and Wildlife by Prof. Travis Longcore, University of Southern California / School of Architecture (p 52)
When Nights Are No Longer Dark: Effects of Artificial Light at Night on Agroecosystems by Dr. Maja Grubisic, Leibniz-Institute & Free University Berlin (p 58)
RESEARCH REPORTS User Evaluation of the OpenAIS Pilot Installation by Thomas van de Werff et al., Eindhoven University of Technology (p 64)
EVENTS LpS & TiL 2018 - An Industry Is Repositioning Itself by Arno Grabher-Meyer, LED professional (p 72)
TECHNOLOGIES Standardized Programming of Lighting Components Using NFC Technology by Arnulf Rupp, MD-SIG (p 88)
Bluetooth Mesh Protocol as Applied to Lighting by Russ Sharer, Fulham (p 92)
APPLICATIONS Enriching Horticultural Lighting for Faster Growth and Better Crops by Dr. Richard Blakey, Würth Elektronik eiSos (p 98)
SPECIAL TOPIC 48 VDC Integrated Drivers Offer New Options by R. Weber & S. Hamilton, TE Connectivity (p 102)
LpR69 | Sept/Oct 2018
Tech-Talks Bregenz: Guido van Tartwijk Research: Micro-Optics & Medical Devices Engineering & Technology: Data, Optics, IoT & Cooling Events: LpS & TiL Planning and Program
COMMENTARY A New Lighting Scene by Rogier van der Heide, Curator of Trends in Lighting 2018 (p 08)
EVENTS Planning Your LpS 2018 Is Easy with Our Simple Program Chart and Event App by Bronwen Rolls, Trends in Lighting (p 34) LpS&TiL 2018 EVENT PROGRAM (p 36)
CIE RESEARCH ACTIVITIES(p 40)
ORGANIZATIONS SPECIAL(p 42) Zhaga Enables Mechanical IoT-Upgradability for Outdoor LED Lighting Fixtures by Dee Denteneer, Zhaga (p 42)
Evaluating Performance of LED based Luminaires by Various Experts from LightingEurope (p 48)
TECH-TALKS BREGENZ Guido van Tartwijk, CEO of Tridonic compiled by Dr. Guenther Sejkora, LED professional (p 56)
RESEARCH Smart Design of Freeform Micro-Optical Elements for Thin Direct-Lit Luminaires by Christian Sommer et al., Joanneum Research Forschungsgesellschaft (p 64)
Optical Designs to Improve LED Lighting Efficiency of Medical Endoscopes by Alexander Gaertner & Paola Belloni, University Furtwangen (p 70)
ENGINEERING Rethinking the Photometric Data File Format by P. Eng. (Ret ) Ian Ashdown, SunTracker Technologies (p 76)
Additive Optics Design and Fabrication for Smart Lighting Systems and Tailored Project Solutions by Marco de Visser et al., Luximprint & Physionary (p 82)
TECHNOLOGY Qualified Bluetooth Mesh – Making Lighting Controls Future-Proof by Patrick Durand, Future Lighting Solutions (p 88)
Materials, Manufacturing and Technologies for Designing Passive Cooling Devices by John Broadbent, Columbia-Staver (p 94)
APPLICATIONS Interactive Lighting Control is Opening New Doors for LED Application by Manjinder Benning, Limbic Media (p 98)
TRENDS Approaching the Spectrum of the Sun by Marc Juarez, Seoul Semiconductor (p 104)
COMMENTARY Blue Light Hazard - How Dangerous is SSL Lighting? by Dr. Thomas Attenberger, Instrument Systems (p 08)
CIE RESEARCH ACTIVITIES(p 34)
TECH-TALKS BREGENZ Ken Munro, Partner & Founder, Pen Test Partners compiled by Dr. Guenther Sejkora, LED professional (p 36)
RESEARCH Automatic Panel Level Transient Thermal Tester by Prof. Gordon Elger et al., Technische Hochschule Ingolstadt (p 44)
Roll-to-Roll UV Nanoimprint Lithography for Large-Area Nano- and Micro-Structuring of Flexible Substrates by Dr. Paul Hartmann et al., Joanneum Research Forschungsgesellschaft m.b.H (p 50)
A New Approach for Manufacturing LED Advertising Boards Backlighting by Dr. Eveliina Juntunent al., VTT Technical Research Centre of Finland (p 56)
EVENTS Lighting Industry Quo Vadis - Impressions from Light + Building 2018 by Arno Grabher-Meyer, LED professional (p 62)
MANUFACTURING A Manufacturing Revolution for the LED Lighting Industry by Paavo Käkelä, EID Tech (p 76)
TECHNOLOGIES Integrating Lighting in the Internet of Things by B. Pronk & F. van Tuijl, Philips Lighting Research & Philips Lighting (p 80)
LED Lighting Requires New Approaches in Optics by Marek Škereň, IQ Structures (p 88)
AERONAUTICS Abrasion in Transparent Lens Materials for Exterior Aircraft Lighting by Adam Willsey, Kopp Glass (p 92)
LpR66 | March/April 2018
Tech-Talks Bregenz: Fred Maxik Research: Lifetime Simulation & Optimization Technologies: LED Overvoltage, LED Drivers Application: Thermal Management
COMMENTARY On Smart Luminaires by Prof. Tran Quoc Khanh, Technical University Darmstadt (p 08)
CIE RESEARCH ACTIVITIES(p 32)
TECH-TALKS BREGENZ Fred Maxik, Founder & CTO, Lighting Science Group compiled by Dr. Guenther Sejkora, LED professional (p 34)
RESEARCH Lifetime- and Economic Efficiency Simulation of LED Luminaires in Dymola/Modelica by S. Haemmerle & T. Schmitt, University of Applied Sciences Vorarlberg (p 40)
Full-Color InGaN/AlGaN Nanowire LEDs for SSL and Displays by M. R. Philip & Dr. H. P. Nguyen, New Jersey Institute of Technology (p 50)
EVENTS Technology Is the Answer, But What Was the Question? by Arno Grabher-Meyer, LED professional (p 56)
TECHNOLOGIES A Near Infrared Enhanced LED Lighting Approach by Scott Zimmerman, Silas (p 62)
ENGINEERING Electrical Over Stress - How to Prevent an LED Failing Earlier than Expected by Mauro Ceresa, Cree (p 70)
Method and Circuit to Maintain Constant Light Output for LED Luminaires by Prof.Dr.Eng. Stelian Matei, Electromagnetica (p 80)
LpR 65 | Jan/Feb 2018
TTB: Julia Frohleiks Research: Freeform Optics Optimization Technologies: Multi-Pixel LED Technology Engineering: Thermal Management
COMMENTARY Can You Show Me the Next S-Curve, Please? by Dr. Guenther Sejkora, LED professional (p 08)
CIE RESEARCH ACTIVITIES(p 30)
TECH-TALKS BREGENZ Julia Frohleiks, Researcher, University of Duisburg-Essen compiled by Dr. Guenther Sejkora, LED professional (p 34)
RESEARCH Optimization of Freeform Optics Using T-Splines in LED Illumination Design by Annie Shalom Isaac et al., Karlsruhe Institute of Technology (p 38)
Repro-Light - Looking for a Sustainable and Modular Luminaire Architecture compiled by Arno Grabher-Meyer, LED professional (p 44)
TECHNOLOGIES Multi-Pixel LED Technology Opens New Horizons for Smart Lighting Applications by R. Bertram & N. Harendt, Osram Opto Semiconductors (p 48)
ENGINEERING Thermal Simulation Tool for LED Design Requirements by Chris Aldham, 6SigmaET (p 54)
AUTOMOTIVE Flicker-Free Control of Individual LEDs in Matrix Headlights by Keith Szolusha, Linear Technology/Analog Devices (p 58)
LpR 64 | Nov/Dec 2017
TTB: Dr. Ken T. Shimizu Research: Hybrid Quantum Dot LECs Environment & Quality: Energy Saving & Glare Events: LpS Post Show Report
COMMENTARY The Value Of High-End Labs for High Quality Lighting by Klaus Ludwig, Osram (p 08)
CIE RESEARCH ACTIVITIES(p 32)
TECH-TALKS BREGENZ Ken T. Shimizu, Research & Development Director at Lumileds compiled by Arno Grabher-Meyer, LED professional (p 34)
RESEARCH Hybrid Quantum Dot Light Emitting Electrochemical Cells by Dr. Ekaterina Nannen et al., Nano-Energie-Technik-Zentrum (NETZ) / Uni DuE (p 40)
Thermal Issues Posed by Compact Packaging and IoT for Next Generation SSL by Mehmet Arik & Umut Zeynep Uras, EVATEG / Ozyegin University (p 44)
EVENTS LpS Gets a Younger Sibling to Foster a Holistic System Approach by Arno Grabher-Meyer, LED professional (p 52)
TECHNOLOGIES LiFi - What It Is, How It Works, What It Provides, How to Apply, and Its Future Prospects by Luc Chassage, Oledcomm & Versailles University (p 66)
A New Technology Is Changing the Tunable White Solutions by Phil Lee, Meteor Lighting (p 70)
QUALITY Glare Reduction Made Easy by Dr. Claudius Noack, NORKA Leuchten (p 74)
ENVIRONMENT A World of LED Lights - The Cost of Waiting by Benoit Bataillou, Pi Lighting (p 78)
COMMENTARY Brave New World and the New Dualism of Light(ing) by Arno Grabher-Meyer, LED professional (p 08)
CIE RESEARCH ACTIVITIES(p 36)
TECH-TALKS BREGENZ Tech-Talks BREGENZ Dr. Wilfried Pohl, Director of Research at Bartenbach GmbH compiled by Dr. Guenther Sejkora, LED professional (p 38)
RESEARCH Measurement of Angular and Spatial Resolved Spectral Rayfiles by I. Rotscholl et al., Karlsruhe Institute of Technology (p 48)
Challenges when Designing LED-Based Illumination Systems in Medical Applications and Diagnostics by Prof. Paola Belloni & Alexander Gärtner, Furtwangen University (p 58)
TECHNOLOGIES Intelligent Lighting Designs Enabled by Laser Light by J. A. Carey & Dr. Paul Rudy, Soraa Lasers (p 66)
Quantum Dot Based White LEDs for General Illumination by Ken T. Shimizu et al., Lumileds (p 72)
CHARACTERIZATION Challenges in UV Measurement by Dr. Tobias Roesener, Instrument Systems (p 80)
QUALITY Lighting to Achieve Optimal Appearance by Markus Reisinger, Lighting Research Studio (p 88)
TRENDS Trends in Horticulture Lighting - Interview with Paul Scheidt compiled by Siegfried Luger & Bronwen Rolls, LED professional (p 92)
LpR 62 | July/Aug 2017
TTB: Jamie Singerman Research: AlGaN/GaN-on-Si FET Drivers Technologies: High Frequency LED Drivers Applications: Interior Automotive Lighting
COMMENTARY Lighting Delivering Increased Value to Society - A Strategy for Growth by Peter Hunt, Lighting Industry Association (p 08)
CIE RESEARCH ACTIVITIES(p 24)
TECH-TALKS BREGENZ Tech-Talks BREGENZ - Jamie Singerman, Worldwide Corporate Vice President at FLS compiled by Siegfried Luger, LED professional (p 26)
RESEARCH LED-Retrofit Based on AlGaN/GaN-on-Si Field-Effect Transistor Drivers by Andreas Zibold et al., Fraunhofer Institute for Applied Solid State Physics IAF (p 32)
TECHNOLOGIES LED Driver Miniaturization - Opening New Opportunities for Solid State Lighting by Mickey Madsen, Nordic Power Converters (p 36)
SoC Technologies in Lighting - Today’s Landscape and Tomorrow's Practices by P. Winiarczyk & S. Rzadkosz, Silvair (p 42)
QUALITY Avoiding Brightness and Color Mismatch with Proper RGB Gamut Calibration by Rood Bouten, Admesy (p 46)
APPLICATION Interior Automotive Lighting Control Redefined by Roland Neumann, Inova Semiconductors (p 52)
LpR 61 | May/June 2017
Interview: Dipl.-Jur. Philipp Henrici Research: Variability in LED Production Research: Thin-Film Optics & Wafer Level Packaging Applications: Tunnel Lighting
Editorial: Mega Trends
COMMENTARY A Lighting Designers Relativity of Light Performance by Dr. Sven Horsmann, luxlumina (p 08)
CIE RESEARCH ACTIVITIES(p 32)
TECH-TALKS BREGENZ Tech-Talks BREGENZ - Philipp Henrici, President & Managing Director at BJB compiled by Dr. Günther Sejkora, LED professional (p 34)
RESEARCH New Glass-Based Phosphors for White Light-Emitting Diodes by Franziska Steudel et al., Fraunhofer Institute (p 42)
Ultrathin Direct-Lit LED Module with Beam Shaping Thin-Film Optics by Oscar Fernández et al., CSEM (p 48)
Smart LED System in Package through Water Level Integration Approach by Z. Kolahdouz et al, Delft University of Technology (p 56)
Variability in LED Production and the Impact on Performance by B. Bataillou & T. Merelle, Pi Lighting (p 62)
APPLICATION Technology Challenges in Professional Tunnel Lighting Applications by Maximilian Herzig, Swareflex (p 66)
Enabling Total Control in the Next Generation of Outdoor Lighting by R. Weber & B. Nelson, TE Connectivity (p 70)
LpR 60 | Mar/Apr 2017
> TTB: Dr. J. Norman Bardsley > Research: Roadway Lighting & Perovskite Nanocrystals > Technologies: Thermal Management & Smart Lighting > Applications: SSL Horticulture & Animal Farming
COMMENTARY From Component to System by Andreas Weisl, Seoul Semiconductor (p 08)
CIE RESEARCH ACTIVITIES (p 30)
TECH-TALKS BREGENZ Tech-Talks BREGENZ - Norman Bardsley, President of Bardsley Consulting compiled by Arno Grabher-Meyer, LED professional (p 32)
RESEARCH Roadway Lighting Optics for Environment Adaptive Spatial Light Distribution by Viktor Zsellér & Dr. Krisztián Samu, Budapest Univ. of Technology & Economics (p 40)
Lead Halide Perovskite Nanocrystals - A New Promise for Light Emitting Devices by Mirko Prato & Francesco Di Stasio, Istituto Italiano di Tecnologia (p 46)
TECHNOLOGIES A Standardized Open Platform Is Key to the Future of Smart Lighting System Design by Dr. Kyeongik Min, Samsung Electronics (p 54)
Looking for the Best Thermal Solution for CSP Module Designs by Dr. Giles Humpston, Cambridge Nanotherm (p 60)
APPLICATION Bio-Effective Lighting for Humans, Livestock and Plants by Volker Neu, Vossloh-Schwabe Lighting Solutions (p 64)
SSL Growth Strategies and USDA Corn Breeding Objectives by Brandon Newkirk, LumiGrow (p 68)
COMMENTARY Lighting Up Smart Cities by Dr. Wu Chou, Huawei (p 08)
CIE RESEARCH ACTIVITIES (p 24)
TECH-TALKS BREGENZ Dr. Rubén D. Costa, Group Leader, University of Erlangen-Nuremberg compiled by Dr. Günther Sejkora, LED professional (p 28)
RESEARCH Lifetime Calculation of White HP-LEDs from 16,000 Hours Aging Data by Max Wagner et al., TU Darmstadt (p 34)
EVENTS LuxLive and SILE Sharpen Focus on End-Users by Arno Grabher-Meyer, LED professional (p 40)
Swiss Photonics Workshop on Intelligent Efficient Solid State Lighting by Arno Grabher-Meyer, LED professional (p 44)
TECHNOLOGIES Thermal Management of an LED Light Source for Microscopes by Wolfgang Plank & Gerd Harder, ESCATEC (p 50)
USABILITY Enhancing the LED Experience - UI & UX as Success Factors for IoT Based Lighting Controls by Karl Jónsson & Christian Moormann, Tridonic (p 54)
APPLICATION Technical Aspects Regarding the Equipment of Show Caves with Modern LED Systems by Vladimir Vashkevich, Cave Lighting CL GmbH & Co KG (p 58)
Commentary Review of the LED Lighting Design Approach by Justin Jiang, UniBrite Technology (p 08)
Tech-Talks Bregenz Prof. Christian Cajochen, Univ. Basel, Head of Center of Chronobiology compiled by Dr. Günther Sejkora, LED professional (p 26)
Research The Perspective of Bio-Hybrid White Light-Emitting Diodes Based on Rubber-Like Down-Converting Coatings by Dr. Rubén D. Costa et al., University of Erlangen-Nuremberg (FAU) (p 32)
Events
LpS 2016: A Perfect Platform for New Ideas and Innovations by Arno Grabher-Meyer, LED professional (p 40)
Technologies Comparing New Dielectric Materials for Chip-on-Board LED Packages by H. Zhang, M. Wagner & Prof. T. Quoc Khanh, TU Darmstadt (p 50)
Structured Glass Light Guides for Efficient Lighting by Christian Passlick, Auer Lighting (p 54)
Innovation On-Chip Beam Forming Optics Paves the Way for New Luminaire Designs by Paul Drosihn & Samir Mezouari, Plessey Semiconductors (p 60)
Quality Flicker: Standards and Test Methods by Walter Parmiami, UL International Italia S.r.l (p 64)
Trends Smart Lighting Market and Technology Trends by Jasmine Hinduja, The Insight Partners (p 70)
LpR 57 | Sept/Oct 2016
> Research:Sky Radiance Distribution Pattern > Engineering: Design Process & Online Tools > Technologies: Full Spectrum LED > Environment: Botanical Light Pollution
Commentary The Good the Bad and the Ugly by Ruairí O’Brien, Federation of International Lighting Designers (p 08)
Tech-Talks Bregenz Sebastian Huelck, Director Lighting, EBV Elektronik compiled by Dr. Günther Sejkora, LED professional (p 32)
Research Sky Luminance and Radiance Distribution Patterns: Empirical Assessment and Computational Models by Univ. Prof. Dipl.-Ing. Dr. Ardeshir Mahdavi et al., TU Vienna (p 40)
Engineering
How to Design with LEDs: Concurrent Engineering Yields Fully Optimized Lighting Systems by Brian S. Jasenak, Kopp Glass (p 52)
Easing Lighting System Design with Online Tools by Patrick Durand, Future Lighting Solutions (p 58)
Technologies Technologies for Engineering an LED Light Closest to Sunlight by Masahiko Yamakawa, Toshiba Materials (p 68)
Applications Lighting Fabrics - A New Approach for Flexible Light Sources by Till Sadlowski, Carpetlight (p 76)
Environment Botanical Light Pollution - Red is the New Blue by Ian Ashdown, byHeart Consultants & Lighting Analysts (p 82)
Special LEDs Reveal Paintings Hidden in Paintings by Clint Eccher, Artist, Arno Grabher-Meyer, LED professional (p 90)
LpR 56 | July/Aug 2016
> Research: Lamp Quality & Flicker > Tech-Talks BREGENZ: Francis Wong > Application: Medical Fiber Optics Light Sources > Reliability: E-Caps & Optocouplers in LED Drivers
Commentary Lifetime And Reliability by Dr. Günther Sejkora, items & LED professional (p 08)
Tech-Talks Bregenz Francis Wong, Associate VP Lighting Business Unit, Lextar compiled by Dr. Günther Sejkora, LED professional (p 34)
Research Quality and Health Aspects of LED Lamps for the European Residential Lighting Market by Prof. Dr. Georges Zissis, Paul Sabatier University of Toulouse (p 40)
Flicker Beyond Perception Limits - A Summary of Lesser Known Research Results by Dr. Walter Werner, Werner Consulting (p 50)
Technologies
Concepts to Overcome Lifetime Issues of LED Drivers by Maggie Nadjmi, SL Power Electronics (p 58)
Quality TM-30 or the Quest for New Metrics to Measure Light Color Quality by Arno Grabher-Meyer, LED Professional (p 62)
Applications High-End White Light Sources Fiber Optics Technology for Medical Applications by Holger Laabs, Oliver Mehl & Henning Rehn, Osram (p 68)
Special LED Lamps Recycling Technology for a Circular Economy by A. Gassmann et al., Fraunhofer IWKS & Technische Universität Darmstadt (p 74)
LpR 55 | May/June 2016
> Research: Luminescent Glasses > Manufacturing: Potting Processes for LED Modules > Technology: Optimization of Thermal Management > Tech-Talks BREGENZ: Dr. Biing-Jye Lee
Commentary LFI 2016 Touts LED Lighting and Digital Control Technology Transformation by Dr. Nisa Khan, President of IEM LED Lighting Technologies (p 08)
Tech-Talks Bregenz Dr. Biing-Jye Lee, Chairman of Epistar compiled by Siegfried Luger, LED professional (p 30)
Events Light + Building Post Show Report: The Six Most Noteworthy Observations by Arno Grabher-Meyer, LED professional (p 36)
Research Luminescent Glasses and Glass Ceramics for White Light Emitting Diodes by Franziska Steudel et al., Fraunhofer Institute (p 48)
Manufacturing
Potting Processes as a Part of LED-Based Lighting Module Manufacturing Methods by Willi Huber, ViscoTec Pumpen- u. Dosiertechnik (p 52)
Technologies Cost and Performance Optimization of Thermal Management Solution for High Power LEDs by Giles Humpston, Cambridge Nanotherm (p 60)
Special More Efficient Plant Growth with Quantum Dots by Dale Needham, Nanoco Lighting (p 64)
LpR 54 | Mar/Apr 2016
> Research: Thin-Film Optics > Connected Lighting: PoE & BLE with iBeacons > Technology: RGBW Dimming > Tech-Talks BREGENZ: Karl Jónsson
Commentary ZHAGA Meets Smart Lighting by Dee Denteneer, Secretary General of the Zhaga Consortium (p 08)
Tech-Talks Bregenz Karl Jónsson, IoT Architect, Tridonic compiled by Arno Grabher-Meyer, LED professional (p 38)
Research Thin-Film Light Management System for Intelligent Large-Area LED Luminaires by Oscar Fernandez, Centre Suisse d’Electronique et de Microtechnique SA (p 46)
Connected Lighting
Advanced Bluetooth 4.0+ -Based Smart Lighting Technology by Saara Guastella, Casambi (p 52)
Power over Ethernet Lighting for Commercial Buildings by Giovanni Frezza, Molex (p 56)
Technologies Create Colorful and Bright LED Light with an LED Matrix Dimmer by Keith Szolusha, Linear Technology (p 62)
Applications Safety Concept for LED Street Lighting by Andreas Schamber, Phoenix Contact (p 68)
Illuminating Education - Providing a Brighter Future for Students by Jay Black, Revolution Lighting Technologies (p 72)
Special The Value of Dark Skies - About Environmentally Friendly Lighting by J. Scott Feierabend, International Dark-Sky Association (IDA) (p 80)
Commentary Design Beyond FFF by Ed van den Kieboom, InnovationFab Events (p 08)
Tech-Talks Bregenz Wolfgang Nemitz, Scientist, Joanneum Research compiled by S. Luger, LED professional (p 24)
Research Human-Focused Outdoor Illumination: Trade-Off Between Pleasing Color and Circadian Action by Dr. Pranciškus Vitta, Vilnius University (p 30)
White Hybrid Light-Emitting Diodes: A Plausible Solution for Commercialization and Health Issues by Rubén D. Costa et al., University of Erlangen-Nuremberg (FAU) (p 36)
Trends
Embedded Lighting - Developing New Lighting Applications for Modern Architectural Projects by Brad Koerner, Philips Lighting (p 44)
Technologies Light Flicker from LED Lighting Systems - An Urgent Problem to Solve byProf. Georges Zissis, LAPLACE Université de Toulouse (p 50)
Application The Role of Special Optics in Human Centric Lighting and Architecture by Anthony Ang, Suleyman Turgut & Mary Ann Giorgio, Luminit LLC (p 60)
Commentary Can We Have that, Please? - What We as a Manufacturer of Lamps are Looking For by Axel Schmid, Ingo Maurer (p 08)
Tech-Talks Bregenz Andreas Weisl, SSC Europe, Vice-President compiled by S. Luger, LED professional (p 42)
Research Al2O3 Coated Europium-Activated Aluminum Silicon Nitride for COB LED Technology by Nika Mahne et al., Graz University of Technology (p 48)
A Graphene-Based, Spectrally Tunable, Flexible Field-Effect Light-Emitting Device by Xiaomu Wang & He Tiany et al., Tsinghua University (p 58)
Quality Measurement Uncertainty and Conformity Assessment in Photometry by Peter Blattner, METAS & European Association of Metrology Institutes (p 70)
Technologies Chip Arrays in SMD Packages - A New Class of LEDs by Ralph Bertram, Osram Opto Semiconductors (p 78)
Mastering Thermal Issues in LED PCB Design & Laminate Selection by Martin Cotton, Ventec Europe (p 84)
SpecialL: Zhaga’s Latest Books Zhaga Evolves: Focus on Component Standardization Drives New Book Development by Musa Unmehopa & Tim Whitaker, Zhaga Consortium (p 91)
Chip-on-Board LED Modules Standardized in Zhaga Book 12 by Martin Creusen & Charles Knibbeler, Philips Lighting; Manfred Scheubeck, Osram Opto Semiconductors; Ingo Arnrich, BJB; Nico van Stiphout, Molex (p 96)
Light-Emitting Surface (LES) Concept Enables Comparison of Photometric Properties by Stefan Lorenz, Osram GmbH (p 100)
Zhaga Determines Thermal Fit of LED Light Engines and Luminaires by Uli Mathis, Tridonic; Toine Staring, Philips Lighting (p 104)
DMI Specification Defines Electrical Interface between LED Drivers and Modules by Arnulf Rupp, Osram (p 106)
LpR 50 | July/Aug 2015
> Exclusive Interview: Shuji Nakamura > Event Reviews - Focus on Asia and USA > Color-Tunable, InGaN Nanowire LED Arrays > Lighting with LEDs – More than just Illuminating Objects
Commentary A Confusing Situation that Demands Solutions: Performance Specification by Jacob Nuesink, DEKRA Certification (p 06)
Events First EBV Lighting Academy Summary Report by Arno Grabher-Meyer, LED professional (p 40)
Tech-Talks Bregenz Daniel Doxsee, Deputy Managing Director – Nichia Chemical Europe compiled by Dr. A. Prasad, LED professional (p 48)
Research A Self-Compensation Approach for Maintaining the Chromaticity Coordinates of Phosphor Converted LEDs Upon Temperature Variations by Wolfgang Nemitz et al., Joanneum Research (p 54)
Technologies 3-Pad LED Flip Chip COB by Pao Chen, Flip Chip Opto (p 62)
Practical Estimation of Materials and Measures for Thermal Management of LEDs by Giles Humpston, Cambridge Nanotherm (p 66)
Analytical and Numerical Studies on the Influence of the Thermal Conductivity of TIMs on the Case Temperature of LED Systems by Vinay Pal, Nikhil Aggarwal & Rajeev Jindal, Moserbear (p 70)
LpR 48 | Mar/Apr 2015
> International Year of Light 2015 - Opening > DC Supply Grids for LED Lighting > Phase Cut Dimming > Tech-Talks BREGENZ: Ewing Liu
Tech-Talks BREGENZ Prof. Jiangen Pan , Founder & CTO / Everfine by Dr. Amrita Prasad, LED professional (p 28)
Events LpS 2014 – Fostering the Spirit of Innovation and Engineering Arts by Dr. A. Prasad, K. Fink & A. Grabher-Meyer, LED professional (p 34)
Characterization New Binning Strategy for White LEDs to Improve the Color Quality of Interior Lighting by Dr. P. Bodrogi & Prof. T. Q. Khanh, Technical Univ. Darmstadt (p 48)
Special Topic Cost Issues in the SSL Production Chain - From Substrate to the Luminaire by J Norman Bardsley, Bardsley Consulting (p 52)
Manufacturing Cost Saving Potential with Automation and Well Designed Processes by Olaf Baumeister, BJB (p 56)
Managing Manufacturing and Supply Chain Challenges in LED Luminaire Design by Gelston Howell, Sanmina (p 62)
Optics Advanced Optical Plastics Materials for LED Lighting Applications by C. Van Nuffel, E. Wu, P. Jackson & M. Sans Peña, Styron (p 66)
Development of a Workflow for Colored Ray Data by Nicole Stubenrauch, TechnoTeam Bildverarbeitung (p74)
Testing Thermal Transient Testing of LEDs for More Reliable SSL Products by Dr. Andras Poppe, Mentor Graphics (p 78)
LpR 45 | Sept/Oct 2014
> Tech-Talks BREGENZ: Dietmar Zembrot > Technologies for High Quality LED Lighting > Smart Lighting & Human Centric Lighting > Advanced Thermal Management Technologies
Tech-Talks BREGENZ Dietmar Zembrot, LightingEurope, President / TRILUX, CTO by Dr. Amrita Prasad, LED professional (p 30)
Technology High Color-Rendering, Full-Visible-Spectrum LEDs by David Aurelien & Mike Krames, Soraa (p 38)
Optics Light Guide Technology for Obtaining a Different Bi-Directional Direct / Indirect Light Emission Pattern by Brett Shriver, Global Lighting Technologies (p 46)
Thermal Management Improving the Lifetime of Components Using Heat Conducting Plastics by Thies Wrobel & Klaus Gebhardt, Albis Plastics (p 52)
Advanced Passive Thermal Management Solutions for High Power LEDs by Dr. R. Bonner & P. Ritt, Advanced Cooling Technologies (ACT) (p 58)
Electronics Aspects of Intelligent Lighting by Thomas Hauer, RECOM Engineering GmbH & Co KG (p 62)
Application Lighting & Building Automation Technologies by Greg Galluccio, Leviton Manufacturing (70)
The Status of Human Centric Lighting (HCL)
by Dr. Stefan Tasch, Lumitech & Guido Nattkemper, BAG electronics (p76)
Tuneable Solid-State Lighting to Improve Light Quality by Uwe Thomas, LED Engin (p 82)
LpR 44 | July/Aug 2014
> Tech-Talks BREGENZ: Walter Werner > Advanced Primary Optics > LED Light Spectrum Enhancement > Discomfort Glare Perception
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Events Lighting Japan – Strong Focus on OLEDs by Arno Grabher-Meyer, LED professional (p 30)
Interview - Prof. Fischer-Hirchert Using LED Technology in Street Lighting by Siegfried Luger, LED professional (p 42)
Technology Solder Joint Reliability of LED Packages by Saritha Rajamma, Cree Corp. (p 46)
Electronics Electrical Overstress Protection of LEDs with Proper Circuit Design and Layout Practices by Ron Bonné, Takaaki Yagi & Masaki Nishizawa, Philips Lumileds (p 52)
Driving Large Scale LED Panels Efficiently K.H. Loo, Y.M. Lai & C.K. Tse, The Hong Kong Polytechnic University (p 60)
Application Sensor-Driven Designs to Allow More LED Bins and Lower Costs by Sajol Ghoshal, ams (p 64)
LED Light Tile Technology for Lighting and Backlighting by Dr. James Gourlay, Design LED Products (p 70)
Standardization ZigBee Light Link – The Technology for Residential Wireless Lighting Control Simon den Uijl et al., The Connected Lighting Alliance (p 74)
Optics Using Interactive Optimization Utilities to Improve LED Lightpipe Designs Dr. Edward Freniere & Michael Gauvin, Lambda Research Corp. (p 78)
LpR 41 | Jan/Feb 2014
> Photometry Standardization > Measurement with Integrating Spheres > Standards for Smart Lighting > Voltage Limits for PWM Operated LED Drivers > Article Index 2013
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Events LpS 2013 - A Comprehensive Program, Trends, Innovations and New Product Launches by Arno Grabher-Meyer, LED professional (p 22)
Interview - Michael Gall & Micolaj Przybyla Light Quality and Standardized Measurement by Siegfried Luger & Arno Grabher-Meyer, LED professional (p 32)
Electronics LED Converter With High Dimming Performance by Giulio Borsoi, Mathias Burger & Christian Nesensohn, Tridonic (p 38)
Intelligent Over Temperature Protection for LED Lighting Applications by Bernd Pflaum & Hakan Yilmazer, Infineon Technologies (p 46)
Characterization HD-Retina LED Technology - Light Quality Beyond CRI by Giulio Vezzani, Martini Light (p 52)
Application Light Quality and Appropriate Light Measuring Methods in Demanding Applications by Rich Rosen, Litepanels (p 56)
Manufacturing Manufacturing Silicone Lenses and LED Packaging by Tarik Karsandik, Tengifts Technology (p 60)
Special Topics Key Technologies – Drivers of the (LED) Lighting by Arno Grabher-Meyer, LED professional (p 64)
LpR 39 | Sept/Oct 2013
> Reliability-Oriented Design > Natural Design for Heat Sinks > Micro- and Nanostructured 3D LED Technologies > Safety Regulations & Production Testing
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Standardization Labeling and Certification Testing Issues by Arno Grabher-Meyer, LED professional (p30)
Interview Optics Production Technology for Customizing LED Luminaires by Siegfried Luger & Arno Grabher-Meyer, LED professional (p34)
Technology How Silicones are Evolving to Meet the Growing Needs of the LED Lighting Industry by F. de Buyl, M. Beukema and K. van Tiggelen, Dow Corning (p40)
Characterization The Influence of LED Emission Characteristics on the Efficiency of Lighting Systems by Roland Schulz, Osram Opto Semiconductor (p46)
Application An Economical Omnidirectional A19 LED Light Bulb by Chen-Peng Hsu, Industrial Technology Research Institute (ITRI) (p52)
LpR 35 | Jan/Feb 2013
> Zhaga - A Successful Strategy > Copper Bonding Wires > TRIAC Dimming - EMI > Lacquer Systems for PCBs
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Commentary The Mandatory Basis for Professional LED Lighting by Guido Nattkemper, BAG electronics Group (p 4)
Events LED Acceptance in the Global Lighting Market Continues to Grow by Alan Mills, LED professional (p26)
Interview Zhaga – A Successful Strategy for Luminary Manufacturers by Siegfried Luger, LED professional (p 30)
LED & OLED Technology Copper Bonding Wires - A Feasible Solution for LED Packaging by Dominik Stephan & Alon Menache, RED Micro Wire (p34)
Electronics EMI Problems in TRIAC Dimmable LED Drivers by Bianca Aichinger, RECOM Lighting (p38)
Thermal Management Reliable Thermal Management of High-Power LEDs by Stefan Hörth, Haeusermann (p42)
Manufacturing Lacquer Systems for PCBs – Optical Requirements and Performance in Applications by Dr. Manfred Suppa & Johannes Tekath, Lackwerke Peters (p46)
Special Topic DC-Grids - Challenges and Chances for LED Lighting by Arno Grabher-Meyer, LED professional (p52)
Article Index 2012
LpR 34 | Nov/Dec 2012
> LpS 2012 Review > OLED Tech-Panel Discussion > Sensors and Feedback Control > Tunable Lens Technology
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Commentary It's the Overall Solution that Counts, Not the Single Component by Stephan Wegstein, RECOM Lighting (p 4)
Events LpS 2012 Awed Lighting Experts with Its Top Class Exhibition and a New Interactive Lecture Concept by Arno Grabher-Meyer, LED professional (p 24)
Interview LpS 2012 - OLED Technologies Tech-Panel Discussion Summary of an Expert Discussion by Siegfried Luger, LED professional (p 38)
Application Human-Centric Lighting: Sensor Technology for Full-Spectrum Lighting Solutions by Sajol Goshal, ams (p 42)
Sensors and Feedback Control of Multi-Color LED Systems by Thomas Nimz, Fredrik Hailer & Kevin Jensen, MAZeT GmbH (p 46)
Optics Focus Tunable Lenses for LED Lighting by Joerg Wertli, Optotune AG (p 50)
Thermal Management Designing Integrated High-Power LED Systems by A. Lohrer, Endrich Bauelemente & J. Schäfer, TURCK duotec (p 54)
LpR 33 | Sept/Oct 2012
> Special Topic: Zhaga > Aspects of Light Quality > Photometry for Street Lighting > Thermal Simulations of Retrofit LED Bulbs
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Commentary Is the LED Fit for Lighting Solutions by Peter Dehoff, Zumtobel Austria (p 4)
Project An LED Solution for Historic Monumental Electric Chandeliers by Ron Ramselaar, Ramselaar Lighting Solutions & M. Brouwers, Government Buildings Agency (p 30)
Practical Results of a Gas Station Refurbishment with LED Luminaires by Stelian Matei, Electromagnetica SA (p 34)
Application Development Process for a Metal-Halide Replacement LED Module by Fred Bass, Neonlite International Ltd. & MEGAMAN (p 38)
Interview LED Market and Development Trends from the Point of View of a Full-Range Trader in Lighting Interview with Beate Jungwirth & Dr. Christopher Keusch from Everlight by Siegfried Luger & Arno Grabher-Meyer, LED professional (p 42)
Thermal Management Methods of Determining LED Operating Junction Temperature by Mika Maaspuro & Aulis Tuominen, University of Turku (p 46)
Charakterization Mesopic Photometry - An Accurate System of Road Lighting Evaluation by Prija Jain, Surya Roshni Ltd. (p 54)
Aspects of Light Quality in Solid State Lighting by Alexander Wilm, OSRAM Opto Semiconductors (p 60)
Optics
Additive Manufacture of Optics Goes Digital by Marco de Visser, LUXeXceL B.V. (p 68)
Special Topics: Zhaga Introduction to Zhaga and Zhaga’s Spotlight Specification by Menno Treffers, Philips Lighting, Zhaga’s Secretary General (p 77)
Key Facts on the Mechanical Properties of Book 3 Modules by Ralph Bertram, Osram and Martin Creusen, Philips Lighting (p 80)
Zhaga’s Light Emitting Surface (LES) Concept and its Impact on the Light Distribution by Stefan Lorenz, Osram (p 82)
Criteria of the Photometric Interface of a Zhaga Compatible LED Light Engine by Horst Rudolph, Trilux (p 84)
The Optional Locking Ring – A Quick Connection for Zhaga’s Book 3 Modules by Matteo Raimond, A.A.G. Stucchi (p 86)
Proper Thermal Interface Calculation for an Optimized Heatsink Design by Jan de Graaf, Philips Lighting; Uli Mathis, Tridonic and Evans Thompson, Cooper Lighting (p 90)
Testing the Thermal Interface Power of Zhaga Book 3 Modules Correctly by Jan de Graaf, Philips Lighting; Uli Mathis, Tridonic and Evans Thompson, Cooper Lighting (p 92)
Zhaga’s New Housing Strategy Simplifies Interchangeability of Electronic Control Gear by Norbert Wittig, Panasonic Lighting Europe (p 94)
LpR 32 | July/Aug 2012
> LpS 2012 - Preview > LED Substrate Technology > LED Operating Junction Temperature > Remote Phosphor Optimization
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Commentary Class Instead of Mass - Quality Makes the Difference with LEDs, too by Sigrun Heiden, editor for the technical journal LICHT(p4)
Events LFI 2012, LED-Lighting and Architecture Progress by Alan Mills, LED professional (p24)
LpS 2012 Preview - Latest Technologies, Presentations, Discussions and Networking by Gerlinde Graf, LED professional (p28)
Interview Metal Alloy Substrate Technology - An Alternative to Sapphire Interview with Dr. Chuong Anh Tran, President at SemiLEDs Corp. by Siegfried Luger & Arno Grabher-Meyer, LED professional (p34)
Optics Glass Optics for LED Applications by Thomas Hessling, Auer Lighting (p38)
Thermal Management Energy Efficiency and Thermal Simulations of a Retrofit LED Light Bulb Experimental and Theoretical by James R. Pryde, Integrated System Technologies (p42)
Novel Approaches to Thermal Management for Power LED Packaging by Nan Jiang, James P. Novak & Zvi Yaniv, Applied Nanotech Inc. (p50)
Special Topics Optimizing Remote Phosphor for LED Lamp Applications by Guenther Hasna, Optis GmbH (p56)
LpR 31 | May/June 2012
> Light+Building Review > Zhaga Standardization > LED Module Selection Considerations > Driverless LED Light Engines
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Commentary The Future Lies in LED Lighting - Trade Fair Impressions of an Exhimiting Network by Sebastian Lyschick, Osram Opto Semiconductors (p4)
Events Light+Building Review – Zhaga Standard, High Quality Lighting & OLEDs by Arno Grabher-Meyer, LED professional (p26)
Interview Zhaga - Insights into the New LED Lighting “Standard” for Light Engines Interview with Zhaga spokesperson Greg Galluccio, Leviton by Siegfried Luger & Arno Grabher-Meyer, LED professional (p38)
Application LED Module Selection Considerations – The Datasheet and Beyond by John Yriberri, Director of Global Application Engineering, Xicato (p42)
Electronics Driverless LED Light Engines by Bob Kottritsch, Vice President, & Mike Miskin, CEO, Lynk Labs (p50)
Thermal Considerations for Driving LED Strings with CCRs by Steve Sheard, Strategic Programs Manager, ON Semiconductor (p56)
LpR 30 | Mar/Apr 2012
> Light+Building Preview > LED Modules & PCBs > Phosphor Green LEDs > Buck-Based Offline Drivers
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Commentary Solid State Luminaires Pave the Way for an Industry: From Metal Sheet Forming to Optoelectronic Systems by Christian Hochfilzer, Regent Lighting (p4)
Events Light+Building Highlights – Exhibits Focus on Energy Efficiency and Versatility by Siegfried Luger & Arno Grabher-Meyer, LED professional (p26)
Interview LED Technology – Changing the Component Business in the Area of Lighting Interview with Volker Neu, Vossloh-Schwabe Optoelectronic by Siegfried Luger & Arno Grabher-Meyer, LED professional (p34)
Application New Approach for a Modular LED COB System up to 500 W by Magnus Ahlstedt & Johann Ramchen, Optogan (p38)
PCB Design for a High End Stage Light Stefan Hoerth, Haeusermann (p42)
Technology Closing the Green Gap: A Long-Pass Dichroic Filter-Capped PC-LED by Young Rag Do, Department of Chemistry, Kookmin University (p46)
Electronics Energy Efficiency of Buck-Based Offline LED Drivers by Mikka Maaspuro, Pauli Auramaa & Aulis Tuominen, Univ. of Turku (p52)
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Commentary LED Lighting Trends in 2012: The Rise of Lighting Solutions? by Pars Mukish, Yole Développement (p4)
Events Organic Light Emitting Diodes (OLEDs) Continue to Advance by Alan R. Mills, LED professional (p26)
Interview Microcontroller Based LED Drivers Initiate New Potentials Interview with Alex Zaretsky, Lighting Segment Marketing Manager, Renesas Electronics Europe GmbH by Siegfried Luger & Arno Grabher-Meyer, LED professional (p30)
Technology Fundamentals of Planar Remote Phosphor LEDs by Dr. Yosi Shani, CTO, Oree (p34)
Silicon Integrated Passive Device Technology for LED Applications by Laurent Dubos, Market Segment Director for Lighting, IPDiA (p38)
Optics Polycarbonate Leads in LED Applications by Bala Ambravan, Global Product Marketing Director, SABIC (p44)
Electronics Resonant Converter Based LED Drivers by Peter B. Green, LED Group Manager, International Rectifier (p48)
DC/DC Converters Offer Flexibility when Designing LED Drivers by Steve Roberts, Technical Director of the RECOM (p54)
Article Index 2011
LpR 28 | Nov/Dec 2011
> LpS 2011 - Review > AC LED Technology > Print-Optical Technology > Fluid Cooling
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Events LED professional Symposium +Expo 2011 Fascinated LED Lighting Specialists from All Over the World by Arno Grabher-Meyer, LED professional (p26)
Interview New Aspects of AC LED Technologies Interview with Manuel Zarauza,Managing Dir., Seoul Semiconductor by Siegfried Luger, LED professional (p40)
Optics LED Secondary Optics Technology by Molly Lin, Marketing Section Manager, Ledlink (p44)
Print-Optical Technology – Manufacture LED Lenses by Stacking Droplets-On-Demand by Richard de Vrie, CEO, Kurt Blessing, CTO, LUXeXceL Group B.V. (p48)
Thermal Effective LED Replacement Bulb Cooling by Passive Convection by David Horn, CTO, Ronan Le Toquin, Tech. Director, Switch Lighting (p54)
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Interview "Insights Into Recent LED Developments" Interview with Eric Virey, Yole Développement by Siegfried Luger and Arno Grabher-Meyer, LED professional (p 24)
Technology "Growing GaN Epi Layers on 200 mm Silicon Substrates for LED Applications" by Kai Cheng, Johan Dekoster, imec, and Sung Won Jun, Jose-Ignacio Del-Agua-Borniquel, Applied Materials (p 28)
"Influence of the Phosphor Selection on Lighting Quality" by Dan O’Hare and Jonathan H. Melman, Intematix (p 34)
Electronics "Highly Efficient and Reliable Power Supply for LED Street Lighting" by Wonseok Kang and Sungmo Young, Fairchild Semiconductor (p 40)
"LED Drivers Help to Make LED Lighting Costs Competitive without Compromising Quality" by Steve Roberts, Recom (p 44)
"LED Driving Techniques to Hit Power Efficiency Targets of TV Backlight Systems" by Werner Schögler, Markus Luidolt, Manfred Pauritsch and Peter Rust, austriamicrosystems AG (p 48)
LpR 25 | May/June 2011
> LED Street Lighting > DC-Microgrids > LED Signage Driver > Thermal Management > LED Investor Forum
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Event "LED Investor Forum 2011 - Santa Clara" by Alan R. Miles, LED professional (p26)
Interview "LED Street Lighting - About Standards, Challenges and Misconceptions" Interview with Prof. Tran Quoc Khanh, TU Darmstadt by Siegfried Luger and Arno Grabher-Meyer, LED professional (p30)
Application "DC Microgrids and SSL - Key Components for Zero Net Energy Buildings" by Brian T. Patterson, EMerge Alliance and Karen Lee, Osram Sylvania (p34)
Electronics "LED Driver Innovations for High-Performance Signage" by Roland Gehrmann, Toshiba Consumer & Industrial ICs (p40) Thermal "LED Cooling in Harsh Environments with Synthetic Jet Technology" by Markus Schwickert and Brandon Noska, Nuventix (p44)
"Thermal Management of LED Lamps" by A.Motoya, M. Kai, Y. Manabe and S.Shida, Panasonic Corp. (p48) Special Topics "HB-LED Alert Device with Intense Light Output" by Jerry Vereen, Egret Technologies
LpR 24 | Mar./Apr. 2011
> Color Rendition Metric for LEDs > DC-Grid & Communication > LED Replacement Bulbs > LED Cooling > Optical Plastics
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Interview "The Optical Plastics Make a Difference to a Lens" Interview with Peter Jackson and Tsuyoshi Okii from Styron LLC by Arno Grabher-Meyer, LED professional (p 28)
Application Active Cooled 75 to 100 W Equivalent LED Retrofit Bulbs by Istvan Bakk, Tridonic, and Brandon Noska, Nuventix (p 32)
Re-Thinking a New Power and Control System for LED Lighting by Mark Covaro, Redwood Systems (p 38) Characterization Advanced Lighting Technology Needs an Advanced Color Rendition Metric by Artūras Žukauskas, Rimantas Vaicekauskas, Vilnius University, Michael Shur, Rensselaer Polytechnic Institute(p 44) Electronics Sophisticated LED Driver Enhances Quality in Full Color Video Displays by L. Pistoni, M. Merisiso, F. Lissoni, and W. Trovo, ST Microelectronics (p 50) Thermal Cooling High Power LEDs by Norbert Engelberts, Advanced Thermal Solutions (p 54)
Remarks: LED professional appologizes for erroneously having published a wrong author reference for the article "Advanced Lighting Technology Needs an Advanced Color Rendition Metric" in the index of this LpR issue. The correct title and acknowledgement should be: Advanced Lighting Technology Needs an Advanced Color Rendition Metric by Artūras Žukauskas, Rimantas Vaicekauskas, Vilnius University, Michael Shur, Rensselaer Polytechnic Institute (p 44) If you have downloaded your copy before April 5th, 2011, please download the newly uploaded version again!
LpR 23 | Jan./Feb. 2011
> OLED Technology & Market Trends > Digital LED Systems - Interview > Tunable White Light > TRIAC Dimming
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Events The Display Industry Drives OLED Technology by Alan R. Mills, LED professional (p 24)
Interview "The Future of LED Systems is Digital" Interview with Peter Deixler, Philips Eindhoven by Arno Grabher-Meyer, LED professional (p28) Application Intelligent Lighting (Part II): From Definition to Implementation by Osama Mannan, Future Lighting Solutions (p 32) Technology Understanding the Pitfalls of Tunable White Light LED Systems by Madhan Kumar, Sachin Gupta, Cypress Semiconductors (p 38) Electronics Triac Dimmable Primary Side Regulated Flyback by Michael Weirich,Fairchild Global Power ResourceSM Center EP (p 42)
Facts about Dimming by Gregg Sheehan, Light-Based Technologies (p 48)
Charge Controled LED Drivers by Jens Göhring, dilitronics (p 56)
Needed Accuracy of an LED Power Supply by Christopher Richardson, National Semiconductors (p 60)
LpR 22 | Nov. / Dec. 2010
> Impressions from electronica > Digital Controlled Street-Lighting > TRIAC Dimming without Flickering > Thermal Foldback Design > Interview with ON Semiconductor
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Applications Intelligent Lighting (Part1): From Definition to Implementation by Osama Mannan, Future Lighting Solutions p26 Technology “Status Quo and Perspectives of LED Driver ICs - Market and Technology” Interview with Laurent Jenck and Marc Barboni from On Semiconductor by Arno Grabher-Meyer, LED professional p32 Thermal Management Thermal Foldback LED Design by James Patterson, National Semiconductor Corporation p34 Drivers Dimming without Flicker for LED Lighting Applications by Bill Weiss, Power Integrations, Inc. p38
Optimization of LED Control Powered from Line Voltage by Erhard Muesch , ZMDI p46
Street-Lighting Solution Based on a Digital Current Control by N. Aiello, G. Macina, ST Microelectronics - IMS Systems Lab p50
The Multi-Stage Off Line LED Driver by Peter B. Green, International Rectifier p52
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Applications SSL Adoption - Opportunities and Obstacles by David Hammel, Aphos Lighting LLC (p30)
Characterisation How Much Store Should the Lighting Industry Set by the ANSI Standard for LED Chromaticity by Thierry Suzanne, Future Lighting Solutions (p34)
Technology Factors That Drive LED Reliability by Dr. Randy Kong, DfR Solutions (p38)
Thermal Management Junction Temperature in Package Design – The Key To Optimal Heat Dissipation by Kay Fernandez, Lumex (p42)
Drivers Ballasts and Drivers for Conventional and Solid State Light Sources Authors references shown on the article page (p48)
Special Topics CO2 Balance Sheet: Aluminum Versus Alumina Ceramics by Dr. Meinhard Kuntz, CeramTec AG (p58)
Distribution Today – All from One Source by Rudy Van Parijs, EBV Technical Development (p60)
LED Testing, Simulation & Manufacturing LpR 20 | July / Aug 2010
Characterization LED Luminaire Lifetime: Recommendations for Testing and Reporting by DOE Lifetime and Reliability Working Group (p22)
Comparison of Test Results from Different Korean Testing Laboratories by Dong-Hoon Lee et al., Korea Research Institute of Standards and Science (p24)
Technology LED Failure Modes and Methods for Analysis by Holger Pross, RoodMicrotec GmbH (p28)
Optics Considerations for Choosing a Miniature Spectrometer for LED Measurements by Ryan M. Flaherty, Jason D. Pierce, Michelle Dean Ritchie, StellarNet, Inc. (p32)
Drivers Traffic Lights and Signage Need Intelligence by Alex Zaretsky, Renesas Electronics Europe (p38)
Special Topics Distributor - Arrow: From Drivers to Diodes - All from One Single Source by Stephan Wegstein, Arrow Central Europe GmbH (p42)
Event Reports Light+Building Review by Arno Grabher-Meyer, LED professional (p20)
New Era for LEDs in Lighting by Alan R. Mills PhD., LED professional (p28)
Applications Incandescent Replacement Lamps and Health by Wout van Bommel, Van Bommel Lighting Consultant (p30)
The Future of OLED Lighting by Ian Ashdown, byHeart Consultants Ltd; Brent York, Tangenesys Consulting Ltd. (p34)
LED High Bay Lighting by Michael Schratz, Dialight Corp. (p38)
Optics Design and Manufacture of Achromatic Lenses by Christoph Gerhard, Dr. Geoff Adams and Stephanie Wienecke (p40)
Drivers About PLC Reliability by Ashish Garg & Angad Singh Gill, Cypress Semiconductor Corp. (p44)
Exploration on Transmission Technology of RGB LED in Architectural Lighting by Tiger Yen and Jerome Lee, Macroblock, Inc. (p48)
Optimizing LED Drivers for Power, Display Life and the Visual Experience by Irene Signorino, Arkadiy Peker, Kevin Choi, Microsemi Corp. (p53)
Special Topics Component Distributors – Partners for the LED Industry by Ingo Guertler, Europartners Consultants; Siegfried Luger, LED professional (p58)
LED professional – Patent Report (p60)
LED Application & Lighting Systems Issue 18 | Mar / Apr 2010
Applications LED in General Lighting Applications by Günther Sejkora, items – Innovation and Technology Management (p24)
LEDs For Shop Lighting: Interview with lighting designer Simone Mariotto by Arno Grabher-Meyer, LED professional (p28)
Addressing the Rising Requirements for Solid State Lighting Products by Mitch Sayers, Cree Europe GmbH (p32)
OLED Technology – Status of a Promising Lighting Solution by Siegfried Luger, LED professional (p36)
LED Retrofits for Antique Style Roadway and Walkway Lights by Heather Goldsmith, Future Lighting Solutions (p40)
Technology High Quality GaN Substrates for Modern LED Technology by A.E. Romanov, et al., CJSC “Optogan” / Ioffe Physical-Technical Institute RAS (p42)
Thermal Management LED – Cooling and Thermal Management by Lothar Noelle, Fischer Elektronik (p50)
Drivers Intelligent LED Driver/Controllers Becoming Standard Modules by Albert Berghuis, eldoLED (p56)
Event Reports LED Forum Moscow 2009 & Interlight Moscow by A. Grabher-Meyer, LED professional (p18)
Thermal Management Thermally Activated Degradation of Phosphor-Converted White LEDs by L. Trevisanello, M. Meneghini, Dept. of Information Engineering, University of Padova (p22)
LEDs and Heat: Managed or Micromanaged by Dan Jacobs, OPTEK Technology (p30)
Advanced Thermal Management Materials for LED Packaging by Carl Zweben, Ph. D., Advanced Thermal Materials Consultant (p34)
Thermally Conductive Plastics: Balancing Material Properties with Application Needs by Dr. Ir. R.H.C. Janssen, Dr. Ir. L. Douven, Dr. H. K. van Dijk, DSM Research (p38)
Drivers Driver Design Based on System Blocks by Jon D. Pearson, Cypress Semiconductor Corp. (p42)
Annual LED professional Review (LpR) Article Index 2009 (p46)
LED professional – Patent Report (p48)
LED Testing, Simulation & Manufacturing Issue 16 | Nov / Dec 2009
Event Reports OLEDs 2009 by Alan R. Mills, LED professional (p14)
Applications A Comparison of High Level European and U.S. Product Safety Requirements by John Showell, Product Approvals Ltd. (p16)
Technologies Low Cost of Ownership Lithography for High Brightness LED Manufacturing by D. E. Anberg, Advanced Stepper Technology, A. M. Hawryluk, Ultratech Inc. (p22)
Optics Practical LED Light Measurement by Wolfgang Dähn, Bob Angelo, Gigahertz-Optik (p28)
Photometric Measurements in Modern LED Based Optical and Illumination Systems by Juergen P. Weisshaar, Uta Vocke, opsira GmbH (p32)
Imaging Colorimetry: LED Device, Luminaire and Display by Hubert Kostal, Radiant Imaging, Inc., Christina Boehme, SphereOptics GmbH (p36)
Thermal Management When Designing with Power LEDs, Consider Their Real Thermal Resistance by Dr. András Poppe, MicReD Division, Mentor Graphics Corp. (p42)
Silicones in LED’s for Heat Dissipation and Improved Light Output by Chris Dawson, ACC Silicones (p46)
Drivers Short Explanation of Critical Elements of a HB-LED Driver by Rakesh Reddy, Cypress Semiconductor Corp. (p50)
LED professional – Patent Report (p52)
LED Primary & Secondary Optics Issue 15 | Sept / Oct 2009
Application Electrical Considerations of LED Bulbs by Siegfried Luger, Arno Grabher-Meyer and Lukas Gorbach, LED professional (p14)
Optocouplers – A Critical Design Element in LED Bulbs by Arno Grabher-Meyer, LED professional (p17)
Case Study – LED Solution Offers Advantages for Henkel Waste Water Plant by Gordon Routledge, Dialight, Boris Viner, Consultant to Dialight (p20)
Technology High Efficiency Reflective Mirror Type LED by Shigeru Yamazaki, Alpha-One Electronics Ltd. (p24)
Optics All Facts for Choosing LED Optics Correctly by Tomi Kuntze, LEDIL Oy (p28)
Primary and Secondary Optic Materials - LED Luminaire Performance and Lifetime by Thomas Brukilacchio, Ph.D., Innovations in Optics Inc (p32) Shaping the Beam – the Role of Primary and Secondary Optics
by Rudi Hechfellner, Philips Lumileds; Dave Cohen, Fraen Optical Manufacturing Group (p40) Save Space with Focus Tunable Lenses
by Mark Blum, MSc EE , Manuel Aschwanden, PhD , David Niederer, MSc ME, Optotune (p43) Parameters to Consider for LED Optics Design
Application Using RGB LEDs for Multi-Color Sign Applications by Andreas Pohl, Avago Technologies (p12)
Effective Illumination for Internally-lit LED Signs by M. Nisa Khan, Ph.D., LED Lighting Technologies (p16)
Interview with Navid Delassaee - Citizen Electronics by Siegfried Luger, LED professional (p20)
Technology Quantum Dots in LED Lighting: Improving Color Quality Without Sacrificing Efficiency by Dr. Sridhar Sadasivan, Dr. Seth Coe-Sullivan, QD Vision, Inc. (p22)
Chip-Array-on-Ceramic LED: A Versatile Solution to High Performance LED Luminaires by Dr. Gang Wang, Dr. Ian Collier, Dr. Ilkan Cokgor, Harik Su and Dr. Yi-qun Li, Intematix (p26)
Driver Primary Side Regulation: Low Cost and High Efficiency Offline LED Driver by Hangseok Choi, Fairchild Semiconductor (p30)
Thermal Derating of LEDs by Steve Roberts, Recom (p32)
Thermal Management Thermal Management of High Power LEDs by Norbert P. Engelberts, Advanced Thermal Solutions (p36)
Characterization Methodology for Thermal and Electrical Characterization of Large Area OLEDs by A. Poppe et al, Budapest Univ. of Tech., Mentor Graphics, Philips Research Lab. (p15)
On the Standardization of Thermal Characterization of LEDs by A. Poppe et al, Budapest Univ. of Tech., Mentor Graphics, Philips Research Lab. (p22)
Effect of Thermal Environment on LED Light Emission and Lifetime by Cathy Biber, Ph.D., Biber Thermal Design, Ltd (p30)
Driver Advantages of Integrating Power and Control for LED Lighting Applications by Gavin Hesse and Rakesh Reddy, Cypress Semiconductor (p36)
Constant Current Regulators Support LED Lighting Solutions by Tim Kaske, Paul Decloedt, ON Semiconductor (p40)
Thermal Management Comparison of Passive and Active Cooling Effectiveness by Che Cheung, Brandon Noska and Kim van der Heide, Nuventix (p42) Thermal Management of High-Power LED Systems
by Maurice J. Marongiu, PhD, MJM Engineering Co. (p47) Selecting the Right Thermal Interface Material for LED Applications
by Robert Kranz, Dr. Richard Hill, Laird Technologies, Inc (p50) Thermal Management of Sophisticated LED Solutions
by Dr. Michel Kazempoor, PerkinElmer (p53) Design Process for a Customer-Specific Ceramic Heat Sink by Rüdiger Herrmann, CeramTec AG (p56)
LED professional – Patent Report (p60)
LED Applications & Lighting Systems Issue 12 | March / April 2009
Project LED Makeover, Yielding 90% Energy Saving by Alexander Mueller, Future Lighting Solutions (p16)
Application ALADIN – An Advanced Lighting System for Improved Health and Wellbeing by Edith Maier, Walter Ritter, Univ. of Appl. Sciences Vorarlberg, and St. Gallen (p20)
A New White Light Solution Using an End-User Design Approach by Gary Trott, Cree LED Lighting (p28)
Merging Technology and Biomorphic Design by Christie Liu, BComm Marketing & Lumolar (p32)
Light 2.0: LEDs Create an Entirely New Generation of Lamps by Andreas Biß, Sharp Microelectronics Europe (p34)
The Future of LED Illuminators by John Popovich, Column8 (p38)
Thermal Management Ceramic Simplifies Heat Dissipation by Dr. Armin Veitl, Altair Engineering GmbH (p45)
Application City of Kelowna Goes Green with Solar-Powered Area Lighting by Anthony Tisot, Carmanah Technologies Corporation (p16)
Solar LED Street Lighting by Steffen Block, OSRAM Opto Semiconductors GmbH, Gerhard Walch, Franz Jungwirth, EPS soltec, and Arno Grabher-Meyer, LED professional (p18)
Characterization Integrating Sphere Applications for LED and Solar Cell Measurements by Sid Rane, SphereOptics (p24)
NIST/DoE: Standards Set for Energy-Conserving LED Lighting (p27)
Technology Nano-Patterned Sapphire Substrates Improve Performance of GaN-LEDs by Haiyong Gao, et al, Semiconductor Lighting Technology Res. and Dev. Center (p28)
LED Efficacy: A Matter of Die Structures by Arno Grabher-Meyer , LED professional (p29)
Increasing Light Extraction Efficiency of GaN LED Chips by Song, Mi Jeong, Ph.D.; Leniachine, V; Jeong Wook, Lee, Ph.D.; Samsung Research (p34)
A Status on Solar Cell Technology by Anil Sethi, Flisom AG (p41)
Driver Solar Driven LED Systems by Peter B. Green, International Rectifier (p44)
High Efficiency Power Supply for LED Street Lighting Illumination by Luca Salati, STMicroelectronics (p48)
Application Forethoughts on LED Breakouts in Signage by M. Nisa Khan, Ph.D., LED Lighting Technologies (p16)
Integrated, Exergy-Efficient Office Solution Requires LED General Lighting by Dr. W. Werner, Dipl. Ing. F. Theßeling, Prof. Dr. H. Leibundgut, ETH Zürich (p18) Technology Photonic-Lattice Technology by Christian Hoepfner, Luminus Devices (p20)
Evolutionary LED Packaging for Increased Flux Density by Jason Posselt, LedEngin Inc. (p24) Driver Parallel LED Luminous Flux Variation by Ed Wenzel, STMicroelectronics (p28)
Low Noise in LED Driver Circuits by Roger Alm, Melexis (p30)
Designing with High Efficient LED Driver for LED Lighting by Chih-Yu Wu, Macroblock (p33)
Comparison Between Continuous (DC) and PWM LED Driving Modes by Laurent Massol, Arno Grabher-Meyer and Siegfried Luger, LED professional (p34) Thermal Management An In-Depth Look at Active Cooling Thermal Management: Synthetic Jet Technology by Mick Wilcox, Nuventix (p36)
Light + Building, Special Edition Issue 06 | Mar/Apr 2008
Application LED-Systems in Shoplighting by Andreas Siegmund, OSRAM GmbH Interview with Jason Bruges - Jason Bruges Studio by Siegfried Luger, LED professional
Interview with Klaus Vamberszky - Zumtobel Lighting by Siegfried Luger, LED professional Technology Discontent Led to Lumiramic Phosphor Technology by Steve Landau, Philips Lumileds Improvements in Solid State Lighting III-V Semiconductor Production by Dr. Rainer Beccard, AIXTRON AG
Optic Optics design for Colour Mixing LEDs by Dr. Andreas Timinger, OEC AG
Driver High Efficiency 200W LED Ballast by Dr. Michael Weirich, Fairchild Semiconductor GmbH
Driving RGB High Power LEDs by Ulrich Kirchenberger and Pavel Koutensky, STMicroelectronics
High-Brightness-LED Control by Peter Green, International Rectifier
Module Improved LED Modules for General Lighting Market by Christoph Cox, VS-Optoelectronic
Application High Tech for Time Square’s New Years Eve Ball by Jason Harris Koonce, e:cue Lighting Control Characterization Visual Perception Issues of LED Applications by Ingrid M.L. Vogels, Pieter J.H. Seuntiens and Dragan Sekulovski, Philips Research Europe
Measurement of LEDs by Yoshi Ohno, Cameron Miller, and Yuqin Zong, National Institute of Standards and Technology Technology High Performance Multi-Color LEDs in Chip-On-Board Technology by Oliver Kückmann and Jörg Hannig, PerkinElmer Elcos GmbH
White Light LED Technology with Increased Efficiency and Variable CCT by Erwin Baumgartner, Lumitech GmbH
LED Binning: A Process to Watch by Joe Mazzochette, Lamina Methodology TRIZ Introduction by Siegfried Luger, LED professional
Applications Thermal Management for LED Luminaires, by Dr. Keith Bahde, Gallium Lighting Systems Technologies Challenges Still Linger for Mainstream White LEDs, by Dr. Nisa Khan, Ph.D., Optpelectronic & SSL Technologist Drivers & Controls LED Lighting Control Systems: The Next Generation of Lighting, by Abhay Gupta, Echelon Corporation Thermal Management Thermal Management in High Power LED Systems, by Paul Scheidt, CREE
Thermal Management of LED Technology in Applications, by Rainer Huber, Osram Opto Semiconductor GmbH
High Power LED Thermal Modeling and Effect of Thermal Interface Materials, by Oon Siang Ling, Avago Technologies
Direct Copper Bonded Ceramic Substrates for Use With Power LEDs, by Dr. Jürgen Schulz-Harder and Alfred Dehmel, Electrovac curamik
Synthetic Jets for Active Cooling of LEDs, by Mick Wilcox and Lee Jones, Nuventix Inc.
Insulated Metal Substrate for Maximum Brightness and Lifetime, by Nico Bruijnis, The Bergquist Company
Thermal Simulations for LED Applications, by Dr. Johannes Adam, Flomerics Ltd.
LED Technologies & LED Drivers Issue 03 | Sept/Oct 2007
Applications LED Luminaries for General Illumination by Dr. Wilfried Pohl, Bartenbach Lichtlabor Technologies LED Data Sheet comparison by Arno Grabher-Meyer, LED professional
Light Extraction Boosts Efficiency of Vertical Light Emitting Diodes on Metal Alloy Substrate by SemiLEDs Corp Drivers How linear LED driver IC’s can make it irresistible to replace resistor biasing by Joachim Glaeser, Hakan Yilmazer, Infineon Technologies AG
Next Generation LED Area Lighting by Bernie Weir and Frank Cathell, ON Semiconductor
Innovative Analog Control Technologies for Mainstream LED Lighting Market by Andy Aaron and Jeanette Jackson, Light-Based Technologies Inc.
Solving high-voltage off-line HB-LED constant-current control-circuit issues by Giovanni Carraro, International Rectifier Sensors Improved LED systems with true color sensors by DI (FH) Fredrik Hailer, MAZeT GmbH Trends of Engineering System Evolution Ideality by Siegfried Luger, LED professional
Content: - Editorial, S. Luger - Product & Research News - Recent developments in white phosphors; R.J. Arthley - Driving LEDs - A real challenge, A. Grabher-Meyer - Colour compensation, T. Schielke - Adding intelligence to LED lighting systems, S. Bowling - What's the favourite colour?, S. Bramble - Low cost power supply for High Power LED application, M. Weirich - Next generation MR16 LED lamps powered by driver IC, D.F. Weng & M. Nalbant - LED lamps require power conversion ICs to meet EMC and quality standards, S. Fimiani - Trends of engineering system evolution: S-curve analysis, S. Luger
Content: - SSC upgrades design and improves brightness of Acriche by 20% to 48 lm/W - First Domponents presents the industry's brightest single-chip LED with 250 lumens - New EZBright 700 power chip broadens Cree's high performance chip platform - New super bright LED light source from Osram Opto Semiconductor - Philips Lumileds shatters 350 mA performance records with 115 lm/W LED - Panasonic develops White Color Power LEDs by employing GaN Substrates - Rensselaer researchers create world's first ideal anti-reflection coating - Philips LED technology solves efficiendy losses at high drive currents - LEDs for use in downlights - White LEDs and Modules for General Lighting - Lifetime of White LEDs - Efficacy and colour impression of White LEDs - White LED Manufacturers - Trends of Engineering System Evolution
> Photometry Standardization
> LpS 2013 Review
> Reliability-Oriented Design
> In-Line Process Control
> Heatsinks & Silicones
> Printed Optics
> Zhaga - A Successful Strategy
> LpS 2012 Review
> Special Topic: Zhaga
> LpS 2012 - Preview
> Light+Building Review
> Light+Building Preview
> LED Driver Technologies
> LpS 2011 - Review
> Enhanced LED Driving Concepts
> Color Conversion Technologies
LED Light Generation
LED Solar Street Lighting
