Photometric control device for camera

Details Photometric control device for camera Photometric control device for camera

1994-05-13

1996-06-11

Perkey, W. B.

G03B 708

Patent

active

055260926

ABSTRACT:
A photometric control device for a camera, comprises an electric charge-accumulation type of photoelectric conversion device 7 having plural picture elements for photoreceiving and photoelectrically converting a flux of lights from plural regions of a subject field and outputting the respective photoelectric conversion outputs as photometric signals for exposure value calculation; an accumulation time calculating device 13 for calculating an accumulation time for a next operation of the photoelectric conversion device 7 using at least one of information on the maximum value of the photometric signals from the photoelectric conversion device 7 and information on the minimum value of the photometric signals from the photoelectric conversion device 7; and a control device 14 for actuating the photoelectric conversion device 7 for the calculated accumulation time.

REFERENCES:
patent: 4399464 (1983-08-01), Hix et al.
patent: 4791446 (1988-12-01), Ishida et al.
patent: 4843417 (1989-06-01), Ishida et al.
patent: 5008698 (1991-04-01), Muramatsu et al.
patent: 5182447 (1993-01-01), Nakayama
patent: 5194960 (1993-03-01), Ota

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