Exposure information setting device for camera

Details Exposure information setting device for camera Exposure information setting device for camera

1976-11-01

1978-05-09

Adams, Russell E.

354 60A, 354289, G03B 708, G03B 1700

Patent

active

040890112

ABSTRACT:
The present invention relates to an exposure information setting device for a camera having a digital control system in which the aperture value of the lens is applied to the exposure amount control circuit as digital information by means of the aperture value setting mechanism. The device is so designed that the first comb tooth shaped conductor pattern and the second comb tooth shaped conductor pattern are arranged in parallel with each other in such a manner that a phase difference takes place between them. A pair of series of pulses are obtained by making the contact in functional engagement with the aperture value setting operation, moving slidingly over the first and the second conductor patterns. The direction along which the aperture value information varies is detectable by applying the pair of series of pulses thus obtained to the exposure operational circuit through the phase sorting circuit.

REFERENCES:
patent: 3928858 (1975-12-01), Sakurada et al.
patent: 3971048 (1976-07-01), Ito et al.

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