Radiant energy – Photocells; circuits and apparatus – Housings
Patent
1980-02-14
1982-05-25
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Housings
250221, H01J 502
Patent
active
043318681
ABSTRACT:
Standardized housing package for pulsed LED photoelectric controls optical control systems, in which the housing can be interchangeably used for any of the three basic scanning modes for optical controls, namely, through-beam, proximity, or reflex detection. The housing consists of a single, whole or two modular half-spherical head units which are received and supported in a main housing unit configured internally to receive the modular round head member.
REFERENCES:
patent: 3619629 (1971-11-01), Matthews
patent: 3653021 (1972-03-01), Litman et al.
patent: 3679906 (1972-07-01), Myers
patent: 4021665 (1977-03-01), Haas et al.
patent: 4173717 (1979-11-01), Lederer
Nelms David C.
Westin Edward P.
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