Optical Element with a Reflective Surface Coating for Use in a Concentrator Photovoltaic System
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United States of America Patent
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Issued Date -
Sep 16, 2010
app pub date -
Mar 12, 2009
filing date -
Mar 12, 2009
priority date (Note) -
Abandoned
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Abstract
An optical element for use in a concentrating photovoltaic system for converting incident solar radiation to electrical energy. The optical element may include an entry aperture for receiving light beams from a primary focusing element, and an exit aperture for transmitting light beams to a solar cell. The optical element may also include an intermediate section whereby at least some of the light beams reflect off the intermediate section and are transmitted to the solar cell. This region may be composed of a layered structure with a first material layer having a first optical characteristic, and a second material layer having a second optical characteristic. The material composition and thickness of the layers may be adapted so that the reflectivity of the light beams off the surfaces and transmitted to the solar cell optimizes the aggregate irradiance on the surface of the solar cell over the incident solar spectrum.
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