Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1994-06-24
1995-11-28
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250372, 356236, G01J 100, G01J 142
Patent
active
054710537
ABSTRACT:
A light collector for use with a photodetector that provides uniform photodetector output response over a polar angular range regardless of the polar angle of incidence of light upon the collector is disclosed. The light collector comprises a generally spheroidally-shaped light direction changer having a light diffusing surface, and a generally spheroidally-shaped polar attenuator. The geometric center of the photosensitive surface of the photodetector is adjacent to the vertex of the generally spheroidally-shaped light direction changer.
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Diner Bruce A.
Gutteridge Steven
Peterson Gary L.
Wolf William E.
E. I. Du Pont de Nemours and Company
Nichols Steven L.
Westin Edward P.
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