Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1987-04-29
1989-04-18
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250226, 250231R, 73517R, 73651, 73653, H01J 516
Patent
active
048229997
ABSTRACT:
The movement of a body (1) is determined by mounting on or in the body one or more sources (3,4) and one or more detectors (12,14) such that each source propagates polychromatic light along a path to a detector. Radiation modulation means (19;25) is supported by the body such that a change in the movement of the body causes a displacement of the radiation modulation means in at least one light path to vary the distributed spectral content of the light reaching the detector. The or each detector is adapted to detect the intensity of incident radiation at a plurality of different wavelengths, and analysis means (18) interprets the output of each detector in terms of the movement of the body.
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Casella Anthony J.
Hespos Gerald E.
Shami Khaled
Westin Edward P.
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