White Papers

White Paper | Technology | Oct 10, 2012
Fan Efficiency, An Increasingly Important Selection Criteria
Fan Efficiency, An Increasingly Important Selection Criteria How important is fan efficiency in the selection of a cooling system? Selecting a cooling fan is no longer about airflow and noise. The true test for a design engineer is the understanding that by selecting an efficient cooling fan system savings in cost of ownership can be realized. NMB Technologies Corporation, a Minebea Group Company, has released a new white paper on that issue. Read more »
White Paper | Technology | Jul 28, 2010
Cree Study Shows LED Lighting is Best Bet for Energy Efficiency
Cree Study Shows LED Lighting is Best Bet for Energy Efficiency A new report on the life-cycle energy usage of energy-efficient lighting by Cree, Inc. shows that LED lighting products are now more efficient than traditional lighting products when compared across the high-volume applications of recessed downlighting and display spotlighting. Evaluating light fixtures and applications, the white paper’s energy comparisons demonstrate that LEDs offer clear advantages in terms of energy costs and environmental impact over traditional lighting such as incandescent, halogen and compact fluorescent bulbs. Read more »
White Paper | Standardization + Regulation | Dec 31, 1969
Solid State Lighting for Incandescent Replacement—Best Practices for Dimming
This paper focuses on integrated LED lamps intended for replacement of general service incandescent lamps. Future white papers are planned to address other LED dimming topics, such as: color change; light output and efficiency (dimming curve); dimming protocols (Internet protocols, 0-10); LED modules with auxiliary drivers; and control architectures that dim without modulated power. Read more »
White Paper | IP, Reports & Roadmaps | Jan 03, 2013
DoE Releases CALiPER 2012 Year in Review Report
DoE Releases CALiPER 2012 Year in Review Report The CALiPER program has tested more than 500 products since its inception in 2006, revealing a variety of performance trends, holding manufacturers accountable for claims, and identifying concerns that limit adoption. Over the past six years, the LED marketplace has changed substantially; previously relegated to niche status, LED products are now a viable alternative in many product categories and market share is expected to grow rapidly. Starting in 2012, Summary Reports focus on a single product type or application. Read more »
White Paper | IP, Reports & Roadmaps | Mar 13, 2012
Research and Markets Releases "Smart Lighting 2012" Report
The Research and Markets report provides an analysis of the worldwide smart lighting market and builds on NanoMarkets’ extensive six-year experience of analyzing the solid-state lighting industry. The report shows how new value is being created in the lighting market by adding enhanced electronics and intelligent luminaires and how such product strategies will be able to build on the massive trend towards introducing CFLs, LEDs, OLEDs and other forms of energy efficient lighting. Read more »
White Paper | Jul 02, 2013
Alternative Calculation Method Will Improve Thermal Analysis of LEDs - by Michiel Krüger, Ph.D. - Philips Lumileds
Alternative Calculation Method Will Improve Thermal Analysis of LEDs - by Michiel Krüger, Ph.D. - Philips Lumileds An alternative method to estimate the amount of heat generated by LEDs will help increase the accuracy and streamline the thermal analysis of white LEDs. Up until now, thermal analysis of white LEDs has been an imperfect science. Too often LED lamp and luminaire manufacturers rely on insufficient, inaccurate or intangible data to determine the thermal performance of the LEDs in their applications, and, as a result, may over-engineer their heat sink design. Read more »
White Paper | Technology | Oct 08, 2013
Why Pin Fin LED Coolers Perform Better Under Tilted Position?
Why Pin Fin LED Coolers Perform Better Under Tilted Position? For the experiment we compare the ModuLED 9980 with the LPF11180-ZHE. The ModuLED 9980 is a passive LED cooler from extruded aluminium with a diameter. of 99mm and a height of 80 millimeter, thermal resistance under vertical position 1.02°C/W. The LPF11180-ZHE is a passive LED cooler with pin fin structure with a diameter of 111mm and a height of 80mm, thermal resistance under vertical position 1.07°C/W. Read more »
White Paper | Lighting Applications | Dec 06, 2013
LED Lighting Masters the Art of In-Flight Calm on Airbus A380s and Boeing 787s
LED Lighting Masters the Art of In-Flight Calm on Airbus A380s and Boeing 787s Aboard a state-of-the-art aircraft might be the last place you would think of yourself enjoying a warm “candlelit” dinner, followed by a good night’s sleep under a starry night sky. The truth is, the latest aircraft cabins seek to provide just that – a revolutionary in-flight experience through the use of mood lighting. Mood lighting uses the full spectrum of colors and the ability to change these colors continuously with LEDs to mimic or enhance a sunrise morning or a bright, fresh afternoon or a cool evening that winds down the day. These lighting effects even seek to reduce your likelihood of jetlag. LED lighting programs can be specifically designed to gradually shift your waking and sleeping biorhythms to match that of your destination city. Read more »
White Paper | Technology | Dec 11, 2013
The Right Choice of Current-Limiting Resistors for Constant Voltage LED Drivers
The Right Choice of Current-Limiting Resistors for Constant Voltage LED Drivers While LEDs are mostly driven by current sources, there are also several applications where constant voltage drivers are used. In that case current limiting resistors are mandatory. But that raises the question which resistor is the right one to guarantee reliable and accurate control while not compromising efficiency. Phil Ebbert, VP of Engineering at Riedon Inc. explains what to take care of and how to determine the correct parameters. Read more »
White Paper | Technology
WHITE PAPER: Intelligent Over Temperature Protection for LED Lighting Applications
WHITE PAPER: Intelligent Over Temperature Protection for LED Lighting Applications LED lighting is becoming increasingly popular. It offers numerous advantages over conventional lighting, but there are still some issues. One is thermal management. Bernd Pflaum and Hakan Yilmazer from Infineon Technologies explain how LED driver ICs with smart over temperature protection help to increase lifetime and optimize system costs of LED lighting systems. Read more »
White Paper | Products, Materials + Tools | Feb 11, 2014
WHITE PAPER: "LED Reflector and Lens Simulation using TracePro® Illumination Design and Analysis Software"
WHITE PAPER: "LED Reflector and Lens Simulation using TracePro® Illumination Design and Analysis Software" TracePro® is award-winning opto-mechanical design software for layout, optimization, & analysis of illumination systems. This white paper illustrates how TracePro allows users to begin a project with an initial or basic design for LED lighting systems, use software simulation prior to building hardware, and easily create complex reflector shapes. TracePro’s reflector and lens simulation utilities are specifically designed to help CAD designers without traditional optical engineering expertise design LED optical components quickly. Read more »
Simulation Tools | Engineering | White Papers | Optics + Opt. Materials | Resources
WHITE PAPER: "Optimization of LED Lens Components using TracePro® Illumination Design and Analysis Software"
WHITE PAPER: "Optimization of LED Lens Components using TracePro® Illumination Design and Analysis Software" TracePro® is award-winning opto-mechanical design software for layout, optimization, & analysis of illumination systems. This white paper illustrates how TracePro’s 2D & 3D optimization utilities are designed to help CAD designers without optical engineering expertise design a variety of LED optical components – including practical examples. The capabilities of TracePro lead the designer through a process to maximize the technical merits of the device/system in the shortest amount of time. Read more »
Resources | White Papers | Light Sources | Engineering | Simulation Tools
WHITE PAPER: "Accurate LED Source Modeling Using TracePro"
WHITE PAPER: "Accurate LED Source Modeling Using TracePro" Modern optical modeling programs allow product design engineers to create, analyze, and optimize LED sources and LED optical systems as a virtual prototype prior to manufacturing the actual product. The precision of these virtual models depends on accurately representing the components that make up the model, including the light source. Read more »
Resources | White Papers | Thermal Management
WHITE PAPER: "High Intensity UV LED Sources Enabled by Next Generation Substrates"
WHITE PAPER: "High Intensity UV LED Sources Enabled by Next Generation Substrates" Thermal management of high-power UV LEDs is substantially more demanding than for white LEDs. This arises due to their lower efficacy combined with the end use requirement for intense light sources. Critical to the thermal management of densely packed LED arrays is the substrate the semiconductors are mounted on. This whitepaper investigates how next generation Nanoceramic substrates can benefit the LED industry and presents a case study of a 75W UV LED module, just 2cm². Read more »
Simulation Tools | Engineering | White Papers | Optics + Opt. Materials | Resources
WHITE PAPER: "LED Reflector and Lens Simulation using TracePro® Illumination Design and Analysis Software"
WHITE PAPER: "LED Reflector and Lens Simulation using TracePro® Illumination Design and Analysis Software" TracePro® allows users to design, analyze, and optimize LED lighting systems using software simulation prior to building hardware. The resultant accuracy of these models depends on the accuracy of the components that make up the model. These include light source characteristics, surface and material properties, and model geometry. Read more »
OLEDs | White Papers | Optics + Opt. Materials | Resources
Manufacturability of OLED Encapsulation and Light Extraction
Manufacturability of OLED Encapsulation and Light Extraction Applications for OLEDs in lighting are opening unique possibilities for designers; however, the organic materials make OLEDs more fragile than LEDs. A higher-index Luminit Light Shaping Diffuser® developed into a barrier film could be an excellent substrate for OLEDs, encapsulating them while simultaneously supporting them. Read more »
Simulation Tools | Engineering | White Papers | Optics + Opt. Materials | Resources | Mar 14, 2017
White Paper: Predicting Scatter of Light Shaping Diffuser® Angles Using Luminit’s Proprietary Optical Model and OpticStudio
White Paper: Predicting Scatter of Light Shaping Diffuser® Angles Using Luminit’s Proprietary Optical Model and OpticStudio Luminit has developed a proprietary scatter model for users of Zemax. Unlike conventional optical design programs that provide bulk scatter and surface scatter models that “predict” output distribution, Luminit’s proprietary optical model accurately calculates surface effects so users can choose the Light Shaping Diffuser (LSD) angle that offers the most optimized performance. This white paper describes the characteristics of the LSD scatter model and the level of accuracy that can be achieved during this critical stage of the design cycle. Read more »
White Papers | Optics + Opt. Materials | Resources | Apr 21, 2017
White Paper: Shaping LED Diffuser Performance with Polycarbonate Materials
White Paper: Shaping LED Diffuser Performance with Polycarbonate Materials The LED lighting market continues to grow, yet consumers are accustomed to the soft white diffused light from incandescent bulbs. To speed up adoption, manufacturers are utilizing plastic materials containing diffusion additives to offset harsh LED illumination and eliminate hot spots. It’s important to choose the correct diffusion plastic to meet to meet transmission, color and UL requirements. In this paper, we examine how plastic selection, a diffusion package and color help designers achieve the desired look for their application. Read more »
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