Camera with motor-driven diaphragm device

Details Camera with motor-driven diaphragm device Camera with motor-driven diaphragm device

1986-09-16

1987-07-21

Perkey, W. B.

354266, 3542711, G03B 700, G03B 908

Patent

active

046814175

ABSTRACT:
A camera having a motor-driven diaphragm device comprises a diaphragm driving motor disposed within the camera; a diaphragm driving member which is driven by the motor to open or close the diaphragm aperture of a photo-taking lens; and a change-over switch to shift the rotating direction of the motor depending on the opening or closing of a switch which operates in association with a shutter release button. The diaphragm aperture is stopped down by the driving force of the motor when the release button is depressed and is opened to the fully open position thereof by reverse rotation of the motor when the release button is no longer depressed.

REFERENCES:
patent: 3518930 (1970-07-01), Thieme et al.
patent: 3772974 (1973-11-01), Shimomura
patent: 3842587 (1974-10-01), Strauss et al.
patent: 3914034 (1975-10-01), Komine
patent: 4192588 (1980-03-01), Wagensonner et al.
patent: 4281909 (1981-08-01), Ishibashi
patent: 4322144 (1982-03-01), Suzuki et al.
patent: 4443083 (1984-04-01), Nakano

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