Interaligned component optical encoder with integral housing com

Details Interaligned component optical encoder with integral housing com Interaligned component optical encoder with integral housing com

1997-05-02

1999-07-13

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023114, 250239, 341 13, G01D 534

Patent

active

059230320

ABSTRACT:
An improved optical encoder with a simplified construction for reliable component alignment and enhanced resolution is disclosed. The encoder includes a housing with locating points, such as studs and shelves, integrally formed on inner surfaces of the housing. The locating points reliably fix the X, Y and Z axis orientation between a light detector and light source assembly. The light source assembly preferably comprises two light detectors on a single board to increase resolution. Additional features of the invention include a sealed housing and a code wheel having two concentric tracks of transmissive slots that are circumferentially offset from each other and an external cable strain relief assembly.

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