Electromagnetically driven shutter

Details Electromagnetically driven shutter Electromagnetically driven shutter

1980-05-28

1982-07-06

Hix, L. T.

G03B 908

Patent

active

043380140

ABSTRACT:
In the disclosed electromagnetically driven shutter, a leading shutter member and a trailing shutter member are driven by respective electromagnetic drive sources through an exposure operation and a return operation. Selector switches supply drive current from a battery to electromagnetic coils of the drive sources and control the direction of the drive current. After an exposure operation, a relay sets the switches for a return operation and resets the switches for exposure. Preferably, the relay is controlled by signals delayed by different delay times from the termination of the exposure operation so as to set the switches correctly.

REFERENCES:
patent: 4164370 (1979-08-01), Kimura et al.

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