Fiber optic optical device

Details Fiber optic optical device Fiber optic optical device

1983-08-31

1985-03-05

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 9624, G02B 514

Patent

active

045033269

ABSTRACT:
An electro-optical angular displacement transducer incorporates a pair of encoding disks to produce a varying moire intereference pattern sensitive to angular displacement of one disk relative to the other. The disks are illuminated by a fiber optic bundle over substantially a full 360 degree annulus concentric with the disks. A similar fiber optic bundle is used to collect the light transmitted through the disks and supply it to a detector.

REFERENCES:
patent: 3987300 (1976-10-01), Palmer
patent: 3992620 (1976-11-01), Waller
patent: 4117460 (1978-09-01), Walworth et al.
patent: 4240066 (1980-12-01), Lenox
patent: 4284353 (1981-08-01), Yoshida et al.

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