Resources Archive

IP, Reports & Roadmaps | Jul 29, 2010
U.S. Department of Energy publishes final report on SSL efficacy for todays products
U.S. Department of Energy publishes final report on SSL efficacy for todays products DoE SSL luminaries test shows a huge discrepancy between manufacturer claims and actual tested luminaire performance. Numerous products for differnt applications were tested in three rounds. To give consideration to real-life conditions off state power consumption (standby power) was taken into account. Pilot test results were published in December 2006, first round results followed in March 2007. Now Final results are published for free distribution in the public interest for noncommercial, educational purposes. Read more »
IP, Reports & Roadmaps | Jul 29, 2010
DOE Releases Round 3 CALiPER Reports: Progress in Product Efficacy
DOE Releases Round 3 CALiPER Reports: Progress in Product Efficacy The U.S. Department of Energy has completed another round of solid-state lighting (SSL) product testing reports. The DOE Commercially Available LED Product Evaluation and Reporting (CALiPER) Program, formerly called the Commercial Product Testing Program, supports testing of a wide, representative array of SSL products available for general illumination. The Department allows its test results to be distributed in the public interest for noncommercial, educational purposes only. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
DOE Releases Oakland Demonstration Report
DOE Releases Oakland Demonstration Report The U.S. Department of Energy (DOE) has published the report from the Oakland, CA, demonstration of LED street lights. This report, prepared by Pacific Gas & Electric and Energy Solutions, provides an overview of project results including measured energy consumption and illuminance levels, economic analysis, and resident feedback. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
DoE Reports Round 4 of CALiPER Testing Program Results: Inaccuracy of Performance Data
DoE Reports Round 4 of CALiPER Testing Program Results: Inaccuracy of Performance Data In round 4 of CALiPER testing DoE had a closer look on MR16 and T8 replacement products as well as on two downlights, seven task lamps and five "outdoor & other" fixtures. The DOE Commercially Available LED Product Evaluation and Reporting (CALiPER) Program, formerly called the Commercial Product Testing Program, supports testing of a wide, representative array of SSL products available for general illumination. The Department allows its test results to be distributed in the public interest for noncommercial, educational purposes only. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
DOE Releases Report on FAA Demonstration of LED Walkway Lighting
DOE Releases Report on FAA Demonstration of LED Walkway Lighting The U.S. Department of Energy (DOE) has published the final report from the Federal Aviation Administration (FAA) demonstration of LED walkway lighting. This report, prepared by Pacific Northwest National Laboratory, provides an overview of project results which include energy savings of more than 25% over existing lighting, improved illuminance uniformity, and positive user feedback. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
DOE Releases Report on FAA Demonstration of LED Walkway Lighting
The U.S. Department of Energy (DOE) recently released a September 2008 report, Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications. Today DOE published an Errata to the report regarding the refrigerated display case energy savings estimates. Specifically, the installed base of refrigerated display case fluorescent lighting systems in the U.S. was given in linear feet of display cases instead of, as labeled in the September report, the number of refrigerated display cases. This correction impacts calculations throughout the report. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
DOE Report on Residential LED Lighting Shows Advantage over Conventional Lighting
DOE Report on Residential LED Lighting Shows Advantage over Conventional Lighting In August 2008 the Pacific Northwest National Laboratory (PNNL) conducted a light-emitting diode (LED) residential lighting demonstration project for the U.S. Department of Energy (DOE), Office of Building Technologies, as part of DOE’s Solid-State Lighting (SSL) Technology Demonstration GATEWAY Program. Two lighting technologies, an LED replacement for lamps (bulbs) in downlights and an LED undercabinet lighting fixture, were evaluated in the demonstration which was conducted in two homes built for the 2008 Tour of Homes in Eugene, Oregon. The homes were built by the Lane County Home Builders Association (HBA) and Future B Homes. The Energy Trust of Oregon (ETO) also participated in the demonstration project. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
DOE Report on LED Area Lights for a Commercial Garage Shows Good Acceptance
DOE Report on LED Area Lights for a Commercial Garage Shows Good Acceptance This U.S. Department of Energy GATEWAY Demonstration project studied the applicability of light-emitting diode (LED) luminaires for commercial parking garage applications. High-pressure sodium (HPS) area luminaires were replaced with new LED area luminaires. The project was supported under the U.S. Department of Energy (DOE) Solid-State Lighting Program. Other participants in the demonstration project included Providence Portland Medical Center in Portland, Oregon, the Energy Trust of Oregon, and Lighting Sciences Group (LSG) Inc. Pacific Northwest National Laboratory (PNNL) conducted the measurements and analysis of the results. PNNL manages GATEWAY demonstrations for DOE and represents their perspective in the conduct of the work. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
DOE Report Releases Two New CALiPER Benchmark Reports
DoE recently released two new CALiPER Benchmark Reports; one comparing omni-directional incandescent lamps (A-type and small decorative, candelabra-type lamps) and their commercially available LED replacements, the other shows an analysis of halogen MR16 lamps and their commercially available LED replacements. Read more »
IP, Reports & Roadmaps | Jul 28, 2010
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 »
IP, Reports & Roadmaps | Jul 28, 2010
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 | Jul 28, 2010
DOE Releases GATEWAY Report on LED Parking Lot Lighting Demonstration
DOE Releases GATEWAY Report on LED Parking Lot Lighting Demonstration 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 | Jul 28, 2010
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 | Jul 28, 2010
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 »
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 »
IP, Reports & Roadmaps | Jul 28, 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 | Jul 28, 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 | Dec 30, 1969
Flip-chip light emitting diode with high light-emitting efficiency
Flip-chip light emitting diode with high light-emitting efficiency A flip-chip light emitting diode with high light-emitting efficiency is disclosed. The LED includes a transparent conductive layer, an oxide layer, a reflective metal layer, a conductive layer, and a protective diffusion layer sequentially disposed over a p-type semiconductor layer. Thereby, light emitting from a light-emitting layer toward the p-type semiconductor layer is reflected and penetrating a transparent substrate and emitting outwards. Thus the problem of light shielded from the flip-chip type LED is solved and the light-emitting efficiency is improved. Furthermore, the present invention disposes the LED chip in a face-down orientation on a conductive substrate by flip-chip technology so as to enhance heat-dissipation efficiency of the LED. Read more »
White Paper | Standardization + Regulation | Dec 30, 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 »
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