Signal selector for automatic exposure apparatus of camera

Details Signal selector for automatic exposure apparatus of camera Signal selector for automatic exposure apparatus of camera

1984-11-14

1986-01-14

Perkey, William B.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

354465, 307357, G03B 7087, G03B 1718, H03K 522

Patent

active

045642818

ABSTRACT:
A camera includes an exposing device for exposing a photosensitive member with light from an object through an aperture, a detecting device for detecting an object brightness, a controlling device for controlling the exposing device and the aperture so as to obtain a proper exposure of the photosensitive member, a first signal producing device for producing a first signal, a second signal producing device for producing a second signal, a third signal producing device for producing a third signal, and a signal selecting device for selecting one of the first, second and third signals. The controlling device sets an aperture diameter and an exposure time to have a first, second or third relation in accordance with the first, second or third signal when the signal selecting device selects the first, second or third signal, in the order named.

REFERENCES:
patent: 4204755 (1980-05-01), Toyoda et al.
patent: 4214826 (1980-07-01), Uchida et al.

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