Ambient lighting detection mechanism

Details Ambient lighting detection mechanism Ambient lighting detection mechanism

1983-05-13

1986-02-04

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, H01J 314

Patent

active

045688265

ABSTRACT:
A mounting arrangement for a photocell is disclosed which allows detection of ambient lighting. A collar is secured to a mounting surface by an integral flange and a locking collar. The photocell is fixed within a body member slidingly positioned within the collar. An adjustable aperture in the body member allows ambient light to be detected.

REFERENCES:
patent: 2756349 (1956-07-01), Frank
patent: 3225187 (1965-12-01), Curtin
patent: 3289005 (1966-11-01), Prescott et al.
patent: 3408501 (1968-10-01), Thompson
patent: 3584228 (1971-06-01), Kenyon et al.
patent: 4023035 (1977-05-01), Rodriguez
patent: 4359636 (1982-11-01), Stauffer

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