Piezoelectric power supply for cameras

Details Piezoelectric power supply for cameras Piezoelectric power supply for cameras

1977-07-29

1980-02-26

Hix, L. T.

Electrical generator or motor structure

Dynamoelectric

Rotary

354226, 310332, 310339, G03B 708, H01V 4110

Patent

active

041903366

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 controlling the shutter to automatically establish exposure duration in accordance with the level of scene illumination, piezoelectric means such as a bimorph for providing electrical power to the circuit when stressed, and means for repeatedly stressing the piezoelectric means during each exposure cycle.

REFERENCES:
patent: 3456134 (1969-07-01), Ko
patent: 3500451 (1970-03-01), Yando
patent: 3553588 (1971-01-01), Honig
patent: 3636840 (1972-01-01), Harvey et al.

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