Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1997-08-07
1999-03-02
Evans, F.L.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
2502033, 356121, G01B 1100
Patent
active
058774904
ABSTRACT:
A quadrant light detector that employs the concept of constructed occlusion to improve its accuracy and by incorporating baffles within the design to improve its detection response to incoming light having an incidence angle neat the horizon, and to divide a diffusely reflective cavity into quadrants. The quadrant detector is able to determine the direction, or azimuth and elevation, to the light source anywhere within a sector of a hemisphere or a sphere.
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Rains, Jr. Jack C.
Ramer David P.
Advanced Optical Technologies, LLC
Evans F.L.
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