Piezoelectric electronic shutter control for cameras

Details Piezoelectric electronic shutter control for cameras Piezoelectric electronic shutter control for cameras

1977-07-18

1978-08-01

Hix, L. T.

354234, G03B 708, G03B 962

Patent

active

041046579

ABSTRACT:
A shutter control device is disclosed which includes a shutter which is openable to permit scene light to pass through a camera aperture, an electronic circuit for producing a signal which varies in accordance with the level of scene illumination, and a single piezoelectric energy conversion device such as a bimorph for providing electrical energy to the circuit and for controlling the condition of the shutter in response to the signal from the electronic circuit to automatically establish the exposure period.

REFERENCES:
patent: 3110824 (1963-11-01), Flanagan
patent: 3598030 (1971-08-01), Beach

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