Exposure control device in a camera

Details Exposure control device in a camera Exposure control device in a camera

1988-07-19

1989-11-28

Mathews, A. A.

354270, G03B 902

Patent

active

048840912

ABSTRACT:
A pair of iris diaphragms are each connected to a driving pin formed on either free end of a rocking lever at one point and are each supported slidably by a single guide pin formed on a base plate, thereby to move smoothly without wobbling. By driving the rocking lever with a motor, the iris diaphragms move in opposite directions to form an iris aperture for determining correct exposure in fast response to the brightness of a subject to be taken as an image.

REFERENCES:
patent: 3873987 (1975-03-01), Brauning et al.
patent: 3928859 (1975-12-01), Peterson
patent: 3938168 (1976-02-01), Lange
patent: 4149974 (1979-04-01), Takahama et al.
patent: 4797700 (1989-01-01), Tsuji et al.

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