Technology | Aug 14, 2012

ASSIST Released Calculation Guidelines to Avoid Stroboscopic Effects in SSL Lighting

In the small photo, the ruler is stationary and no stroboscopic effects are seen. In the other photo, multiple images are produced by each flicker cycle as the ruler moves across the scene. Both pictures were taken under a flickering light source (at 120 Hz) with an exposure time of 1/15th of a second Flicker and stroboscopic effects have been a concern with solid-state lighting (SSL), and industry and the ENERGY STAR program have debated recently the effects of frequency and other driving modes on the perception and acceptability of flicker. To provide further data and guidance in this area, the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute has conducted human factors studies of flicker that were recently published in the Lighting Research and Technology journal. The studies, funded by the Alliance for Solid-State Illumination Systems and Technologies (ASSIST), will become the basis for future ASSIST recommends guidelines on flicker from SSL systems. Read more »

Fundings & Projects | News-Spot | Jun 15, 2012

DOE Announces Selections for SSL Manufacturing R&D (Round 3) Funding Opportunity

The U.S. Department of Energy has announced the competitive selection of three projects for solid-state lighting (SSL), in response to the SSL Manufacturing R&D funding opportunity announcement (FOA) DE-FOA-0000561. The two-year projects will focus on achieving significant cost reductions while maintaining quality by improving manufacturing equipment, processes, or monitoring techniques. Total DOE funding for the three projects is $7.1 million and leverages an additional $5 million in private-sector funding from the three companies. Read more »

White Paper | IP, Reports & Roadmaps | Mar 28, 2012

DOE Releases GATEWAY Report on Museum LED Retrofit Lighting

Track luminaires installed in the J. Paul Getty Museum in Malibu with Cree 12W PAR38 LED replacement lamps The U.S. Department of Energy (DOE) has published the final evaluation report from a retrofit of track lighting used to illuminate a special photography exhibition at the J. Paul Getty Museum in Malibu, California. During the demonstration, 12W LED PAR 38 lamps replaced 60W halogen PAR 38 30° flood lamps on a one-for-one basis across three adjacent gallery spaces. Read more »

IP, Reports & Roadmaps | Feb 28, 2012

DOE Releases Life-Cycle Energy Consumption Report - Incandescence vs. Fluorescent vs. LED Lamps

Compared to CFLs and Incandescent iamps, today's LED lamps clearly use most energy in the manufacturing process, but the life-cycle energy consumption is on par with CFLs and 1/4 of incandescent lamps. Until 2015, LED lamps are expected to half the life-cycle consumption again The U.S. Department of Energy (DOE) has published a report comparing the energy consumed over the entire life cycle for LED lamps, compact fluorescent lamps (CFLs), and incandescent lamps. Entitled "Review of the Life-Cycle Energy Consumption of Incandescent, Compact Fluorescent, and LED Lamps", it is based on existing life-cycle assessment literature of lighting products. Read more »

IP, Reports & Roadmaps | Feb 01, 2012

Energy Savings Potential of Solid-State Lighting in General Illumination Applications

The forecast indicates that LED lighting in general illumination applications has the potential to reduce U.S. lighting energy consumption by nearly one half The U.S. Department of Energy (DOE) has developed a comprehensive strategy to accelerate the development and market introduction of energy-efficient solid-state lighting for general illumination. The energy savings potential of this technology is significant, and the U.S. will benefit by focusing our resources and maintaining our global leadership in this technology. The latest report forecasts the energy savings potentiol due to LED technology. Read more »

IP, Reports & Roadmaps | Jan 24, 2012

DOE Report Characterizes 2010 US Lighting Market

The graph shows clearly the over-proportional use of inefficient technologies in the residential market, hence offering a huge savings potential The U.S. Department of Energy (DOE) has released a report detailing the characteristics of the U.S. lighting market by technology and sector, which helps chart progress made toward the goal of transitioning to more efficient white-light source technologies. The 2010 U.S. Lighting Market Characterization provides comprehensive and detailed estimates of the national inventory of installed lamps as well as their performance characteristics, associated energy use, and lumen production. It focuses on four sectors: residential buildings, commercial buildings, industrial buildings, and outdoor. Read more »

White Paper | IP, Reports & Roadmaps | Jan 11, 2012

DOE Releases Consortium Report on LED Street Lights

The U.S. Department of Energy (DOE) has published the final report from a demonstration of LED technology in ornamental post-top street lights, conducted in Sacramento, CA. This report provides an overview of the evaluation of four different LED replacement products using computer simulations, field measurements, and laboratory testing. The evaluation was conducted by DOE’s Municipal Solid-State Street Lighting Consortium in collaboration with the Sacramento Municipal Utility District and the City of Sacramento, with additional support from City consultant Mary Matteson Bryan. Read more »

Technology | Nov 30, 2011

The Maastricht University Medical Center+ and Philips Investigated the Effect of Light on the Sleep-Wake Rhythm of Cardiac Patients

The research shows that after seven days in a patient room fitted with HealWell ? a new lighting system developed by Philips which mimics the natural day/night cycle outdoors ? patients sleep on average 8% longer. After one week in a patient room fitted with standard lighting, on the other hand, patients' sleep duration was in fact slightly shorter than on the first night. Read more »

Technology | Nov 04, 2011

EU Project IMOLA Starts R&D on Large-Area, Intelligent OLED Lighting

Transparent organic light-emitting diode on foil (Courtesy of TNO/Holst) Imec and its project partners announce the launch of IMOLA (Intelligent light Management for OLED on foil Applications), a project under the EU’s 7th framework program for ICT (FP7). The project’s goal is to make large-area OLED-based lighting modules with built-in intelligent light management. These systems will be used in future energy-efficient wall, ceiling and car dome lighting, where the light intensity can be adjusted intelligently, e.g. according to the time of the day or weather conditions. Read more »

Technology | Oct 18, 2011

The True Knowledge About White LEDs and Our Biological Clocks

Blue light hazard - reality or scare tactics You come into contact every day with light-emitting diodes (LEDs) - they illuminate alarm clocks, new televisions, traffic lights, and smartphone displays. Increasingly, you will see white-light versions of LEDs becoming available for energy-efficient home lighting, car headlights, and streetlamps. But how does that affect our organism? Read more »

Technology | Sep 21, 2011

SEMI Announces Formation of India SSL Special Interest Group

Today SEMI India announced the formation of a Special Interest Group on high-brightness light-emitting diodes (HB-LEDs) and solid state lighting (SSL). The new SEMI SSL Special Interest Group in India will focus on materials, equipment and manufacturing issues to further promote the industry— through cost reduction, quality improvement, supply chain development, and industry promotion. The new group comprises both SEMI members and key industry leaders in the HB-LED/SSL market. Read more »

IP, Reports & Roadmaps | Aug 11, 2011

SEMI Releases China LED Fab Industry Report

SEMI has announced the release of a new report, The China LED Fab Industry Report, which provides a comprehensive summary on the rapidly-growing China LED industry, including the latest data on capital and equipment spending, fab capacity, sales rankings of Chinese LED manufacturers, and other valuable information. The report also includes an update on the subsidy incentives for China fab projects, an update on new LED fab projects, an overview of Chinese sapphire wafer suppliers, and company profiles of the leading Chinese manufacturers. Read more »

Technology | Aug 02, 2011

Independent Research using Xicato Spot Modules: Link Between Light Quality and the Attraction of Retail Displays

Figure 1: The competing light sources (Halogene, standard CRI~80 LEDs and high CRI~95 LEDs) There is a strong link between the quality of accent light sources, in terms of color rendering ability and in particular the rendering of deep reds, and the attention-grabbing potential of retail displays, according to the outcome of an on-site evaluation by end-users and lighting designers conducted by independent researcher, Colette Knight and peer reviewed by University College London. Shoppers and lighting designers took part in the experiment carried out in a House of Fraser store in London. It showed that there was no statistical difference between the appreciation of colors rendered with halogen or Ra 95 (R9 >95) LED sources, whereas the rating was lower for Ra 80 (R9<20) LED sources. This translated directly into the rating of the display itself in terms of its attraction. Read more »

IP, Reports & Roadmaps | Jul 21, 2011

DOE Publishes Updated Recommendations for Testing and Reporting LED Luminaire Lifetime

The U.S. Department of Energy (DOE) has published an updated version of the guide LED Luminaire Lifetime: Recommendations for Testing and Reporting, the latest edition in a series of publications on LED product performance and lifetime. The guide was developed by a working group under the auspices of DOE and the Next Generation Lighting Industry Alliance, composed of a diverse group of experts in reliability, lighting, and LED technology. Their recommendations are an important step toward consistent, industry-wide understanding of LED luminaire lifetime, and will assist standards organizations in their work. Read more »

Technology | Jul 15, 2011

Studies Published on Flicker Perception from SSL Systems - ASSIST to Release Related Recommendation

The contour plot figures below show mean detection percentages (left) and mean acceptability ratings (rigth), both as a function of frequency and percent flicker (click on image to see the full plot) Flicker and stroboscopic effects have been a concern with solid-state lighting (SSL), and industry and the ENERGY STAR program have debated recently the effects of frequency and other driving modes on the perception and acceptability of flicker. To provide further data and guidance in this area, the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute has conducted human factors studies of flicker that were recently published in the Lighting Research and Technology journal. The studies, funded by the Alliance for Solid-State Illumination Systems and Technologies (ASSIST), will become the basis for future ASSIST recommends guidelines on flicker from SSL systems. Read more »

FEATURED

Nichia Showcases LEDs with 'Light so Good'

Nichia Showcases LEDs with 'Light so Good' At Light + Building 2020 held in Frankfurt, Nichia – the leader in high-performance LED solutions – reveals it will present at least three complementary technologies to improve the delivery of light quality under an over-arching banner of 'Light so Good'. Read more »

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Future Lighting Solutions Launches Offline Lighting System Selector Mobile App for iOS and Android

Future Lighting Solutions Launches Offline Lighting System Selector Mobile App for iOS and Android Montreal, Canada (mynewsdesk) January 21, 2020 - Future Lighting Solutions (FLS), a leading provider of solid-state lighting, engineering expertise and design tools, is proud to announce the launch of their new offline Lighting System Selector for iOS and Android devices. Read more »

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Researchers from Hokkaido University Let Europium Shine Brighter

Researchers from Hokkaido University Let Europium Shine Brighter A stacked nanocarbon antenna makes a rare earth element shine 5 times more brightly than previous designs, with applications in molecular light-emitting devices. - The europium Eu(III) complex with nanocarbon antenna emitting fine red light. Read more »

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Zhaga Summit – September 23rd in Bregenz

Zhaga Summit – September 23rd in Bregenz Luger Research and Zhaga are proud to announce that the 2020 LpS/TiL conference will host a Zhaga Summit. This one-day event will provide application-driven introductions to the latest Zhaga standards, review their market reception, and solicit inputs from the specifier community through workshops. Read more »

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Research Confirms that Light Pollution Can Suppress Melatonin Production in Humans and Animals

Research Confirms that Light Pollution Can Suppress Melatonin Production in Humans and Animals Melatonin sets the internal clock. Researchers from IGB in an international team have analyzed data on the impact of light pollution on melatonin formation in humans and vertebrates. They found that even the low light intensities of urban skyglow can suppress melatonin production. Melatonin ... Read more »

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CIE Announces Availability of New Documentation: Test Method for OLED Luminaires and OLED Light Sources

CIE Announces Availability of New Documentation: Test Method for OLED Luminaires and OLED Light Sources The new CIE International Standard S 025-SP1/E:2019 is a supplement to CIE S 025:2015 Test Method for LED Lamps, LED Luminaires and LED Modules specifies the requirements for measurement of electrical, photometric, and colorimetric quantities of OLED luminaires and OLED light sources. These sources ... Read more »

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Care, Caution & Awareness Are Needed When Using LED Lights

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 Ambassador for Women in Lighting 2019, and co-leader of ... Read more »