Camera

Details Camera Camera

1989-07-07

1990-04-24

Perkey, W. B.

354435, 354443, 354230, 354233, 354236, 354441, G03B 708, G03B 908

Patent

active

049203720

ABSTRACT:
A camera having a lens shutter and a focal-plane shutter, includes a selector circuit for selecting either a lens shutter mode or a focal-plane shutter mode; a first driving device for controlling either the programmed exposure value of the lens shutter or the size of the aperture, the first driving device including a motor and an actuating member driven by the motor, the actuating member including a peripheral surface with a first cam for controlling the programmed exposure value of the lens shutter in response to forward rotation of the motor, and a second cam for controlling the size of the aperture in response to reverse rotation of the motor, the first cam having an inclination in a first direction and the second cam having a less steep inclination in an opposite direction; a pivotally mounted opening lever connecting the lens shutter to the actuating member, the lever defining a first arm and a second arm, the first arm in engagement with the actuating member and the second arm connected with the lens shutter, a first pin on the first arm which rides on the cams, and a second pin on the second arm to pivotally connect with shutter blades of the lens shutter; a spring biasing the first pin into engagement with the cams; a second driving device controlling the time of operation of the focal-plane shutter mode; and a sequential control circuit controlling the driving devices.

REFERENCES:
patent: 3584561 (1971-06-01), Starp
patent: 4200385 (1980-04-01), Shono
patent: 4354753 (1982-10-01), Tenne et al.
patent: 4687314 (1987-08-01), Raschke
patent: 4841327 (1989-06-01), Yamamoto et al.

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