Program type electric shutter provided with exposure warning ind

Details Program type electric shutter provided with exposure warning ind Program type electric shutter provided with exposure warning ind

1979-04-20

1981-03-31

Hix, L. T.

354 60L, 354354, G03B 7091

Patent

active

042589908

ABSTRACT:
A program type electric shutter wherein a shutter blade which is also a diaphragm blade and is made to be able to latch an exposure warning indicating device to be inoperative just before the beginning of the opening of the shutter blade and a diaphragm device which can open and close a window for a light receiving element are operatively connected with each other in order to prevent the mis-indication of the exposure warning indicating device. This electric shutter is provided with an electric self-timer device and a flash controlling circuit.

REFERENCES:
patent: 3950767 (1976-04-01), Matsui
patent: 4095243 (1978-06-01), Numata
patent: 4112443 (1978-09-01), Iguchi

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