Position encoder

Details Position encoder Position encoder

2005-12-06

2005-12-06

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S23700G, C356S617000, C347S037000, C347S104000

Reexamination Certificate

active

06972403

ABSTRACT:
An optical encoder that includes an optical grating and a quadrature optical encoder sensor that move relative to each other. The optical grating includes a first encoder bar and a plurality of second encoder bars, wherein the first encoder bar is optically configured to change an amplitude of an output of the quadrature optical encoder sensor.

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U.S. Appl. No. 10/342,483, Inventors: David D. Martenson and David L. Knierim; Filing Date: Jan. 15, 2003.
Agilent HEDS-9202 Two Channel Optical Incremental Encoder Modules 200 LPI Analog Output Data Sheet; Jul. 26, 2002; Agilent Technologies.

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