Edward Henry Fox

US Patent:

42759650, Jun 30, 1981

Filed:

Aug 21, 1979

Appl. No.:

6/068374

Inventors:

Elias Snitzer - West Hartford CT
Donald E. Anschutz - Somers CT
Edward V. Fox - East Granby CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

G01B 1114

US Classification:

356375

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.