Camera capable of flash photography

Details Camera capable of flash photography Camera capable of flash photography

1987-07-15

1988-08-02

Gellner, Michael L.

354147, G03B 1505

Patent

active

047616660

ABSTRACT:
In a camera having a focal plane shutter, a magnet restrains the rearward shutter curtain in response to the supply of power to the magnet. A control device controls the period of power supply, and the restraint of the rearward shutter curtain is released when the power supply is terminated. A detecting circuit detects the termination of the power supply and outputs a detection signal. Another detecting circuit responsive to the movement of the forward shutter curtain outputs another detection signal. A selector selects one of the detection signals and inputs the selected signal to a starting circuit, which responds to the selected signal to start a flash emission.

REFERENCES:
patent: 4174897 (1979-11-01), Matsumoto

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