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Optical system for determining physical characteristics of a solar cell

United States Patent

August 14, 2001
View the Complete Patent at the US Patent & Trademark Office
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The invention provides an improved optical system for determining the physical characteristics of a solar cell. The system comprises a lamp means for projecting light in a wide solid-angle onto the surface of the cell; a chamber for receiving the light through an entrance port, the chamber having an interior light absorbing spherical surface, an exit port for receiving a beam of light reflected substantially normal to the cell, a cell support, and an lower aperture for releasing light into a light absorbing baffle; a means for dispersing the reflection into monochromatic components; a means for detecting an intensity of the components; and a means for reporting the determination.
Sopori; Bhushan L. (Denver, CO)
Midwest Research Institute (Kansas City, MO)
09/ 302,727
April 30, 1999
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. DE-AC36-98G0-10337 between the United States Department of Energy and the Midwest Research Institute.