Photointerruptor for use in optical transmission-type rotary enc

Details Photointerruptor for use in optical transmission-type rotary enc Photointerruptor for use in optical transmission-type rotary enc

1990-10-26

1991-12-17

Gonzalez, Frank

Optical waveguides

With optical coupler

Switch

385 15, G02B 626

Patent

active

050730010

ABSTRACT:
A photointerruptor for use in an optical transmission-type rotary encoder comprising a rotatable pulse scale having a code pattern and a light-emitting optical fiber and a light-receiving optical fiber secured to a housing with their end faces being opposed to each other on both sides of the code pattern. The housing has a housing main body a pair of optical fiber opposing members for previously inserting the top ends of the respective optical fibers and a housing main body having fitting recesses for holding the optical fiber opposing members with the end faces of the optical fibers being opposed to each other at a predetermined distance on both sides of the code pattern. The housing main body may be constituted by a pair of optical fiber opposing members engageable with each other.

REFERENCES:
patent: 4861128 (1989-08-01), Ishikawa et al.
patent: 4897671 (1991-01-01), Mahapaha et al.
patent: 4953933 (1990-09-01), Asmar
patent: 5015056 (1991-05-01), Yamaguchi et al.

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