Integral, planar electromagnetic camera element/actuator

Details Integral, planar electromagnetic camera element/actuator Integral, planar electromagnetic camera element/actuator

1981-11-09

1983-05-24

Perkey, William B.

354234, 354247, 354250, 350269, 350272, G03B 908, G03B 910, G03B 940, G05L 2502

Patent

active

043847781

ABSTRACT:
An exposure regulating element for a photographic camera is formed from a one piece sheet of light weight, non-magnetic, electrically conductive metal to provide a light regulating blade, a flexure hinge for urging the blade toward an initial aperture covering position and a conductor coil which cooperates with a permanent magnet for generating a force to move the blade away from the initial position. In a preferred embodiment a pair of exposure regulating elements each providing integral light regulating, flexure hinge and conductor coil means move in opposite directions to cover and uncover an exposure operation.

REFERENCES:
patent: 3081683 (1963-03-01), Horton et al.
patent: 3987473 (1976-10-01), Kondo
patent: 4024552 (1977-05-01), Kondo
patent: 4333722 (1982-06-01), Lee

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