Electromagnetically driven shutter

Details Electromagnetically driven shutter Electromagnetically driven shutter

1984-04-04

1984-12-11

Perkey, William B.

354230, G03B 908

Patent

active

044874936

ABSTRACT:
An electromagnetically driven shutter includes combined diaphragm-shutter blades, the opening and closing of which is controlled by a swingable coil arranged in magnetic fields to travel forwards and backwards. The turns of the coil are made eccentric in relation to the swinging center of the coil, and a drive member for transmitting motion of the coil to the shutter blades is located with its center of inertia at a point almost opposite in position, relative to the swinging center of the coil, from the position of the center of inertia of the coil.

REFERENCES:
patent: 3430119 (1969-02-01), Shelley
patent: 4333722 (1982-06-01), Lee
patent: 4349264 (1982-09-01), Tezuka et al.

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