Optical position locating device

Details Optical position locating device Optical position locating device

1985-12-19

1987-12-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, G01D 534

Patent

active

047135417

ABSTRACT:
An optical position locating device is provided comprising a light emitter, a bidirectional optical coupler, an optical fiber, a series of micromirrors disposed between a fiber and disk carrying the coded tracks (one mirror opposite each track). A control unit successively brings one and only one mirror into an active position, the others remain in a rest position. An optoelectronic reader emitting a light pulse in response to the light reflected by one of the mirrors in the active position through the optical fiber and and a processing unit processes these signals.

REFERENCES:
patent: 3502414 (1970-03-01), Kreckel et al.
patent: 4291976 (1981-09-01), McMahon
Patent Abstracts Of Japan, vol. 5, No. 182 (P-90) [854] 20 Nov. 1981; & JP-A-56 111 415.
Patent Abstracts Of Japan, vol. 5, No. 182 (P-90) [854] 20 Nov. 1981; & JP-A-56 111 416.

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