Shutter

Details Shutter Shutter

1986-11-03

1988-02-09

Griffin, Donald A.

G03B 900

Patent

active

047244526

ABSTRACT:
A shutter is disclosed for use as a high-speed shutter in a camera or an electronic device. The shutter comprises a planar aperture blade which is mounted for reciprocative movement. The aperture blade includes a coil which is part of an electromagnetic actuator. A permanent magnet is mounted adjacent the blade for interaction with a magnetic field produced by the coil. In order to provide for a low-friction support, the aperture blade is supported on flexible connectors located on opposite sides of the blade. A current of one polarity is supplied to the coil to move the aperture blade in one direction, and the polarity of the current is reversed to move the blade in the opposite direction.

REFERENCES:
patent: 3110824 (1963-11-01), Flanagan
patent: 3176170 (1965-03-01), Fulton et al.
patent: 3561847 (1971-02-01), Kitsopoulos et al.
patent: 3820144 (1974-06-01), Neau et al.
patent: 3987473 (1976-10-01), Kondo
patent: 4024552 (1977-05-01), Kondo
patent: 4410251 (1983-10-01), Lee

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