Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1996-01-16
1998-10-13
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
385 93, G02B 626
Patent
active
058215301
ABSTRACT:
A coadunate emitter/detector assembly for use with fiber optics. A housing has a socket for receiving an end face of a fiber optic or thin bundle of fiber optics. A detector is mounted in the socket for receiving light from a portion of the end face. An emitter is mounted close to the detector for directing light into another portion of the end face. The detector can respond to changes in the light received, which is generally varied by a device at the opposite end of the fiber optic that reflects more or less of the emitter generated light back to the detector. A condensing lens may be placed between the emitter and the fiber optic end face to maximize emitted light that enters the fiber optic. The emitter and detector may be placed in a single plain with a light barrier between them, may be stacked or may be axially spaced. The emitter may be located in a can with upstanding walls to reduce light scatter.
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patent: 4457582 (1984-07-01), Lewis et al.
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patent: 5201018 (1993-04-01), Coden et al.
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Anderson Mark V.
Lefevre Donald K.
Mulally Daniel J.
Duncan John R.
Giles Alan L.
Gilliam Frank D.
Westin Edward P.
Wireless Control Systems, Inc
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