Long stroke, high resolution optical position sensor

Details Long stroke, high resolution optical position sensor Long stroke, high resolution optical position sensor

1979-08-21

1981-06-30

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

With light attenuation

33125A, 250237G, 350 9627, G01B 1114

Patent

active

042759650

ABSTRACT:
A high resolution optical position sensor for measuring the linear displacement of a reciprocating device with a long stroke, includes a code plate having a substrate comprised of a fiber optic faceplate having a plurality of parallel optical waveguides which are fused together and aligned perpendicular to each of two major surfaces of the faceplate, and an optical mask with serial transparent and opaque regions encoded in each of a plurality of bit channels disposed on one of the two major surfaces of the faceplate, a portion of the plurality of optical waveguides being in registration with the transparent regions of each bit channel.

REFERENCES:
patent: 3141106 (1964-07-01), Kapany
patent: 4011448 (1977-03-01), Hordeski
patent: 4047025 (1977-09-01), Lemelson
patent: 4116000 (1978-09-01), Martin et al.

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