White Paper | IP, Reports & Roadmaps | Oct 28, 2013

DOE Publishes Report on Color Stability of LED Lighting Products

Chromaticity over time for a subset of the lamps. When intermediate points are shown, the color shift appears unpredictable (a). Δu'v' for the best and worst performing lamps (b). Baseline and final (25,000-hour) chromaticity coordinates for each lamp sample (c). Initial and final chromaticity of lamps tested by CALiPER in 2008–2010 (d) The U.S. Department of Energy (DOE) has published a new report, Color Maintenance of LEDs in Laboratory and Field Applications. Although concern for parametric failure of LED lighting products has largely been focused on lumen maintenance, color shift is a cause of early failure for some products, especially in applications where visual appearance is critical. Read more »

White Paper | IP, Reports & Roadmaps | Sep 12, 2013

New Comprehensive Investigation on LED Phosphors and Down-Converters Patents

Basic phosphor respectively light conversion IP licensing structure Yole Développement announces its new market & technology patent investigation, LED Phosphors and Down-Converters. Hundreds of companies are involved in LED phosphor IP. Most of the major LED players are present in the list of the top patent assignees. But independent phosphor manufacturers are also emerging as major forces in the IP landscape. Read more »

White Paper | IP, Reports & Roadmaps | Jul 30, 2013

DoE Publishes CALiPER Snapshot Report on Outdoor Area Lighting

While most products perform well above the DLC QPL efficacy and output criteria, in the roadway category, where the incumbent technology is predominantly HPS, few LED products listed by LED Lighting Facts appear to be suitable alternatives to nominally 400 W luminaires The U.S. Department of Energy's CALiPER program has released a Snapshot Report on outdoor area lighting, which utilizes the LED Lighting Facts® program's extensive product database to help industry stakeholders understand the current state and trajectory of the market for LED outdoor area and roadway, parking garage, and canopy luminaires. Read more »

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 »

IP, Reports & Roadmaps | Jun 09, 2011

US Commits $14.8M to LED Lighting Research

Latest funding intended to advance both inorganic and organic forms of solid-state lighting, and reduce the cost of the technologies. Read more »

IP, Reports & Roadmaps | May 12, 2011

DOE Publishes Updated SSL R&D Plan

Several informative charts and tables are part of this DoE report, like the "summary of LED package price and performance projections" The U.S. Department of Energy has published an updated version of the March 2011 edition of the Solid-State Lighting (SSL) R&D Multi-Year Program Plan (MYPP). The report provides a description of the activities the Department plans to undertake over the next several years to implement its SSL mission, and informs the development of annual SSL R&D funding opportunities. Read more »

IP, Reports & Roadmaps | Feb 15, 2011

UCI Researchers Find LED Products Billed as Eco-Friendly Contain Toxic Metals

LED products usually are electronic products that should be handled as electronics scrap if disposed, anyway. A realease of potentially hazardous substances under regular use is very unlikely, even when broken. LED professional does not agree with the generalized conclusions of this research. However, it is important to challange statements of PR and lobbies to boost more eco-friendly products. In fact, light-emitting diodes of tested holiday bulbs, traffic lights and car beams marketed as safe, environmentally preferable alternatives to traditional lightbulbs actually contain lead, arsenic and a dozen other potentially hazardous substances, according to newly published research. Read more »

IP, Reports & Roadmaps | Jul 15, 2010

DOE Releases SSL Manufacturing R&D Roadmap

The U.S. Department of Energy has published the 2010 edition of the Solid-State Lighting (SSL) Manufacturing R&D Roadmap. Complementing the SSL R&D Multi-Year Program Plan (MYPP) that guides the Core and Product Development R&D programs, the Roadmap's primary goal is to guide the manufacturing R&D program and help direct funding solicitations for it. Manufacturing R&D is a part of DOE's SSL manufacturing initiative launched in 2009. The Roadmap also provides guidance for equipment and material suppliers, based on industry consensus on the expected evolution of SSL manufacturing – thereby reducing risk, improving quality, increasing yields, and lowering costs. Read more »

IP, Reports & Roadmaps | Feb 17, 2010

New DOE Report Estimates Energy Savings Potential of SSL

The U.S. Department of Energy (DOE) has released analysis findings of the energy savings potential of solid-state lighting (SSL) sources for general illumination applications compared to conventional light sources (e.g., incandescent and fluorescent). Using an econometric model of the U.S. lighting market, the February 2010 report estimates national energy savings if SSL technology achieves certain forecasted price and performance objectives. Read more »

IP, Reports & Roadmaps | Sep 24, 2009

DOE Releases SSL Manufacturing R&D Roadmap

The U.S. Department of Energy (DOE) has published a Solid-State Lighting Manufacturing R&D Roadmap, the end product of two stakeholder workshops sponsored by DOE in 2009. The Roadmap represents industry consensus on the expected evolution of SSL manufacturing, best practices, and opportunities for improvement and collaboration. Read more »

IP, Reports & Roadmaps | Jul 20, 2009

DOE Solid-State Lighting CALiPER Program: Round 8 Results Released

The U.S. Department of Energy (DOE) has released the CALiPER Round 8 Summary Report. The testing was conducted from February 2009 to June 2009. Read more »

IP, Reports & Roadmaps | Apr 06, 2009

DOE Releases Updated SSL R&D Multi-Year Plan

The U.S. Department of Energy (DOE) has released the March 2009 edition of the Multi-Year Program Plan FY'09-FY'15; Solid-State Lighting Research and Development. The report provides a description of the activities the Department plans to undertake in the period of FY'09 through FY'15 to implement its SSL mission. Read more »

IP, Reports & Roadmaps | Mar 23, 2009

DOE Releases GATEWAY Report on LED Parking Lot Lighting Demonstration

doe_parkinglot-jpg The U.S. Department of Energy (DOE) has published the report from a demonstration of bi-level LED parking lot lighting at a Raley's Supermarket in West Sacramento, California. This GATEWAY demonstration report, prepared by Pacific Gas & Electric and Energy Solutions, provides an overview of project results including lighting performance, economic performance, and potential energy savings. Read more »

IP, Reports & Roadmaps | Feb 23, 2009

DoE Released New CALiPER Program Results: Round 7 of Product Testing

DoE released CALiPER Program round 7 results. The testing focused on three application areas: outdoor lighting, downlights, and replacement lamps. One series of tests included eight streetlights. The series of tests on nine downlights included a wide range of luminaires that could potentially be used for downlighting. The replacement lamp category included nine different SSL products, including: MR16s, some larger directional lamps (PAR20, PAR30, and PAR38), and A-lamps. Read more »

IP, Reports & Roadmaps | Jan 28, 2009

DOE Releases Two New Reports on LED Street Lighting

DOE released two new street lighting reports within the Gateway Demonstrations program. Both results show a clear progress in LED street lighting technology and cost savings. Read more »

IP, Reports & Roadmaps | Dec 18, 2008

DOE Releases Phase III Oakland Demonstration Report

The U.S. Department of Energy (DOE) has released the Phase III report from the solid-state lighting (SSL) demonstration of LED streetlights in Oakland, CA. This GATEWAY demonstration report, prepared by Pacific Gas & Electric and Energy Solutions, provides an overview of project results measured over a 12-month period, including comparison to Phase II luminaires, energy consumption and illuminance levels, and economic analysis. Read more »

FEATURED

LumiTop 4000: Comprehensive Optical Wafer Testing for μLEDs

LumiTop 4000: Comprehensive Optical Wafer Testing for μLEDs Instrument Systems offers a unique camera-based measurement solution for μLED wafer testing that generates 2-dimensional, pixel-resolved optical analyses within given cycle times. The LumiTop 4000 has a resolution of 12 MP and can detect the smallest of defects and inhomogeneities on the wafer. ... Read more »

FEATURED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED Lumileds introduces the LUXEON HL2X, the ideal choice for roadway lighting and sports lighting fixtures with the highest flux and efficiency in an industry standard package. "With 318+ lumens at 700 mA and 85°C, LUXEON HL2X delivers more 'field usable lumens' for optical engineers to work with. ... Read more »

EDITORIAL

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight A small LED torch that emits deep red light could help improve declining eyesight, scientists have said: A study by University College London, involving a small sample size of 24 people, has shown that staring at long wavelength light for three minutes every day can "significantly improve vision" ... Read more »

EDITORIAL

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection Signify, the world leader in lighting, is increasing its UV-C lighting production capacity and expanding its UV-C product portfolio. The company is leveraging more than 35 years of expertise in UV-C lighting to address the growing global need for the disinfection of air, surfaces and objects. Read more »