LED & OLED
Adopting an LED More Suited to Circadian Entrainment
Since the introduction of LED lights, a lot has been said about risks of blue light for ocular health on the one hand, and the opportunity of circadian entrainment, on the other hand. While a controversial discussion on the first topic is ongoing, ...
Hermetic Polymer-Free White LEDs for Harsh Environments
AlGaInN-based white LED can easily achieve lifetimes of up to 100,000 h depending on junction temperature and current density. However, state of the art silicone encapsulated LEDs with powder-based phosphors reveal a strong dependence of field ...
ENABLED – A New Funded Research Program to Design Fluorescent Proteins for White LEDs
A joint research project between Spain, Italy and Austria will work to replace inorganic phosphor filters in LEDs by those nature uses deed down the sea. The ENABLED project, coordinated by the Spanish research center IMDEA Materials Institute, has ...
ELECTRONICS & CONTROLS
A New LED Controller Technology to Expedite the Next Level of Smart Lighting
Lighting installations that use artificial lighting and often deemed more comfortable and energy efficient are generally referred to as "Smart Lighting". While no clear definition exists "Smart Lighting" has become a common catch phrase. Kurt ...
A Manufacturing Revolution for the LED Lighting Industry
LpR 67 Article, page 76: Western business investments in local manufacturing facilities have been declining since the 1980s due to partnering with contract manufacturers in Asia. But with increasing and hidden costs in Asia, companies are now ...
SoC Technologies in Lighting - Today’s Landscape and Tomorrow's Practices
A system-on-chip (SoC) quite suddenly became an important component in the lighting industry, fueling IoT innovation and opening new opportunities, while at the same time bringing disruption and new challenges. With rapid advancements in wireless ...
HEALTH & ENVIRONMENT
The Adverse Ecological Impacts of Light Pollution: LEDs' Role in Mitigation
With the negative effects of artificial light at night on ecosystems increasingly well-understood, attention is now turning to the ways in which these impacts can be mitigated through uptake of novel technology and lighting strategies. Dr. Callum J. ...
On Life Cycle Assessment to Quantify the Environmental Impact of Lighting Products
The lighting industry has made great efforts to increase energy efficiency around the world with a strong participation from governmental organizations, multilateral organizations and agencies. However, energy consumption is not the only aspect that ...
Care, Caution & Awareness Are Needed When Using LED Lights
Kyra Xavia is a researcher, educator and investigative journalist based in New Zealand. Her roles as general secretary of the Light and Lighting Research Consortium (LLRC), delegate for the International Dark Sky Association (IDA), New Zealand ...
OPTICS
Repro-light Consortium Deliver Intelligent Optics
Bartenbach's interdisciplinary team this week announced the successful engineering of two unparalleled optic designs. Driven by the scope of the Repro-light project, "To successfully initiate transformation in the European LED lighting industry, by ...
Additive Optics Design and Fabrication for Smart Lighting Systems and Tailored Project Solutions
Since its initial invention back in 2009, printed optics has come a long way in the lighting industry. Additive optics fabrication is a future proof methodology of rapid prototyping custom LED optics by means of digital manufacturing technologies. ...
Optical Designs to Improve LED Lighting Efficiency of Medical Endoscopes
Lighting efficiency for endoscopic instruments has been deemed very poor, at only about 20%. While laboratory tests demonstrate that fiber optics bending is not problematic, optical simulations clearly show that lighting efficiency is strongly ...
THERMAL MANAGEMENT
Temperature Profiling of Secondary LED Optics by Infrared Thermography
Over the last few years, the power density of white LEDs has increased dramatically. Whilst there are large efforts to optimize the thermal management and thus the temperature stability of the LEDs, less attention is paid to the temperature of the ...
A New Approach for Fast and Accurate Measurement of Light Emitting Diodes Junction Temperatures
LpR 73 Article, page 48: Junction temperature of LEDs is one crucial parameter to being thoroughly observed. In this paper, Ahmet Mete Muslu, Onuralp Isil and Prof. Mehmet Arik from the Energy Efficient Electronics and Lighting Technologies Center ...
Thermal and Optical Challenges for SSL in Automotive Applications
LpR 72 Article, page 50: Solid State Lighting changed the lighting environment in automotive lighting almost more than in the field of general lighting. While efficiency of the devices increased and every few weeks new improvements are reported, ...
STANDARDIZATION
ZigBee Alliance and Thread Group Join Force
The ZigBee Alliance, an association of companies creating, maintaining and delivering open, global standards for the low-power wireless Internet of Things (IoT), and the Thread Group, an organization focused on making Thread the foundation for the ...
MD-SIG Launches LEDset Specifications for Interoperable LED Drivers and Modules
The Module-Driver Interface Special Interest Group (MD-SIG), a lighting-industry consortium, has published its LEDset specifications. LEDset provides the lighting market with a standardized, multi-vendor, electrical interface for LED systems, which ...
The Connected Lighting Alliance Endorses ZigBee 3.0 for Residential Lighting
PISCATAWAY, N.J. (March 11 2016) – The Connected Lighting Alliance [TCLA] announced today the endorsement of ZigBee 3.0, as the preferred open standard for residential connected lighting applications, simplifying choices for both lighting companies ...
