Aperture control system for cameras

Details Aperture control system for cameras Aperture control system for cameras

1984-09-07

1986-07-15

Perkey, William B.

354455, G03B 7085, G03B 720

Patent

active

046002898

ABSTRACT:
An aperture control system comprises compensating means for actuating an electromagnetic latch mechanism at an earlier time to compensate errors in controlled aperture values due to the mechanical time delay in the electromagnetic latch mechanism, and means for setting a compensated amount in the compensating means in accordance with the error in a controlled aperture value for each interchangeable lens.

REFERENCES:
patent: 3987460 (1976-10-01), Ueda et al.
patent: 4179202 (1979-12-01), Fukuhara
patent: 4307948 (1981-12-01), Kitamura et al.
patent: 4429973 (1984-02-01), Kawasaki et al.
patent: 4477161 (1984-10-01), Kawasaki et al.

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