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Solid-State Lighting News at the LRC
The Potential of Outdoor Lighting for Stimulating the Human Circadian System
A new ASSIST technical paper evaluates the potential for outdoor lighting systems to stimulate the circadian system in humans. After evaluating four light sources, researchers determined that three of the four would not meaningfully stimulate the circadian system after one hour of exposure under two typical street lighting conditions.
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The Solid-State Lighting Program at the LRC
Solid-state lighting has the potential to revolutionize the lighting industry. Light-emitting diodes (LEDs)—traditionally used in signs, signals and displays—are rapidly evolving to provide light sources for general illumination. This technology holds promise for lower energy consumption and reduced maintenance.
The Lighting Research Center's Solid-State Lighting Program team conducts necessary research and educational programs to enhance this technology, overcome barriers, and help it to gain acceptance for general illumination purposes. The program's multidisciplinary staff focuses its efforts in the areas of:
- Lighting systems and components research — studying component interactions and their effect on system performance
- Human factors research — studying how people perceive and react to lighting conditions
- Field demonstrations and market transformation activities — identifying ways to use LEDs in more types of applications, replacing less efficient light sources
- Education — training professionals interested in LEDs and solid-state lighting through workshops and seminars
- Industry collaboration — bringing together researchers, manufacturers, utilities, and government to facilitate broad adoption of LED technology
LRC Director of Research N. Narendran, Ph.D. leads this program, which has established the LRC as an objective, international resource for solid-state lighting.
Download the LRC Solid-State Lighting Program Brochure 
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