Photo-switch

Details Photo-switch Photo-switch

Filed on

1981-09-25

Date issued

1984-03-20

Examiner

Lee, John D.

Other Related Categories

350 9618, G02B 726

Type

Patent

Status

active

Patent number

044377282

Description

ABSTRACT:
A photo-switch having a switch case, a plurality of photo-transmissive bodies inserted into the switch case with their ends arranged in a side-by-side relation, and an intermediate photo-transmissive body or a reflecting member carried by a switching means. The switching means is operable to move the ends of the intermediate photo-transmissive body or the reflecting member into and out of optical connection with the ends of the plurality of photo-transmissive bodies thereby to selectively interrupt the transmission of light between the photo-transmissive bodies. When the intermediate photo-transmissive body or the reflecting member is moved away from the ends of the photo-transmissive bodies, a light shielding member is brought into the gap therebetween to improve the resolution of the photo-switching operation.

REFERENCES:
patent: 4124271 (1978-11-01), Green
patent: 4170731 (1979-10-01), Howell et al.
patent: 4261638 (1981-04-01), Wagner

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