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Nonimaging light concentrator with uniform irradiance

United States Patent

April 1, 2003
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A nonimaging light concentrator system including a primary collector of light, an optical mixer disposed near the focal zone for collecting light from the primary collector, the optical mixer having a transparent entrance aperture, an internally reflective housing for substantially total internal reflection of light, a transparent exit aperture and an array of photovoltaic cells disposed near the transparent exit aperture.
Winston; Roland (Chicago, IL), Gee; Randy C. (Arvada, CO)
Solar Enterprises International, LLC (Chicago, IL), Duke Solar Energy, LLC (Raleigh, NC)
09/ 810,696
March 16, 2001
Certain rights in this invention are retained by the U.S. Government pursuant to Contract No. ADC-0-30444-01 of the National Renewable Energy Laboratory of the U.S. Department of Energy.