Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1982-09-29
1985-09-17
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250551, 340365R, G01B 534
Patent
active
045422915
ABSTRACT:
An optical flex sensor is provided and consists of a flexible tube having two ends, a reflective interior wall within the flexible tube and a light source placed within one end of the flexible tube and a photosensitive detector placed within the other end of the flexible tube to detect a combination of direct light rays and reflected rays when the flexible tube is bent.
REFERENCES:
patent: 4414537 (1983-11-01), Grimes
Gatto J.
Miller Richard L.
Nelms David C.
VPL Research Inc.
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