LED Downlight - Scattered Photon Extraction (SPE™) Technology
Recessed downlights are the fastest growing product in the luminaire market.
There is a need to develop a specificationgrade, highly efficient small aperture downlight (4”), producing at least 1000 lm to compete with compact fluorescent-based luminaires in size and light output, and with ceramic metal halide-based luminaires in life and cost.
an advanced, energy-efficient LED lighting system for general lighting applications in homes and similar commercial settings based on the Lighting Research Center’s (LRC’s) patent-pending Scattered Photon Extraction (SPE™) technology, which has been shown to significantly improve the efficacy and light output of current generation LED technology.
The project on Advanced LED Lighting for Residential and Commercial Applications seeks
to develop a system for use in homes and commercial buildings. The LED
lighting system, developed in this project, will be based on the LRC's
patented SPE ™ (Scattered Photon Extraction) technology, which has been
shown to improve significantly the efficacy and light output of current
generation LED technology.
The most promising applications appear to be either: a wall washing and/or accent lighting luminaire; or an under cabinet task and/or display lighting luminaire.
The LED lighting system developed in this project has a target efficacy of 100 lumens per watt (lm/W), far exceeding current incandescent, LED, and compact fluorescent lamp (CFL) technologies. This technology will be particularly well suited to general commercial lighting applications and some residential applications because it will:
- Reduce lighting energy use by 50% to 70% compared to traditional incandescent and CFL technologies;
- Provide significantly longer life (5 to 10 times) than other available lighting technologies;
- Far exceed the requirements of the ENERGY STAR® specifications for residential lighting products;
- Allow for much more compact and flexible designs for general lighting products;
- Be easily dimmed, allowing for flexible and demand responsive lighting; and
- Be cost effective to purchase, install, use and maintain.
The LRC and Lightolier are project partners. The LRC has worked with Lightolier to develop prototypes, to be tested over a period of time to assess their performance and reliability, and they have developed a plan for product commercialization. This project is part of the latest PIER portfolio—Lighting California’s Future (LCF).
