Device for automatic reciprocation of lens angle and aperture of

Details Device for automatic reciprocation of lens angle and aperture of Device for automatic reciprocation of lens angle and aperture of

1981-03-12

1982-08-31

Griffin, Donald A.

Optics: motion pictures

Removable film strip magazine type

352140, 352141, 354 42, G03B 300, G03B 1302, G03B 708

Patent

active

043469760

ABSTRACT:
A surveillance camera which automatically and continually varies both the lens angle and the aperture is provided. In an area under surveillance where conditions dictating a need for varying the exposure and the field of a surveillance camera, a continually reciprocating lens angle and a continually varying lens aperture, obtains a variety of camera settings which results in at least some satisfactory exposures of the area.

REFERENCES:
patent: 2196097 (1940-04-01), Brown
patent: 2492646 (1949-12-01), Kaeburn
patent: 2885471 (1959-05-01), King
patent: 3517597 (1970-06-01), Rauffer
patent: 3631786 (1972-01-01), Crapsey
patent: 4141636 (1979-02-01), Shimojima
patent: 4195924 (1980-04-01), Stemme et al.

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