Multi-optical-path photoelectric switch

Details Multi-optical-path photoelectric switch Multi-optical-path photoelectric switch

1998-09-22

2000-10-31

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, 340556, G01V 904, H01J 502

Patent

active

061406333

ABSTRACT:
A multi-optical-path photoelectric switch includes: a light emitting unit having a plurality of light emitting devices; and a light receiving unit having the same number of light receiving devices as said light emitting devices. Each unit includes, a shaft member at one end, a support member rotatably supporting said shaft member, and a joint member, wherein when said joint member is tightened, said support member fixs said shaft member, and when said joint member is loosened, said support member allows said shaft member to rotate.

REFERENCES:
patent: 3805061 (1974-04-01), De Missimy et al.
patent: 4704524 (1987-11-01), Masaki et al.
patent: 4742337 (1988-05-01), Haag
patent: 5003169 (1991-03-01), Sakaguchi et al.
patent: 5015840 (1991-05-01), Blau

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