Exposure controlling device for camera

Details Exposure controlling device for camera Exposure controlling device for camera

1996-12-30

1999-09-14

Perkey, W. B.

Photography

With object illumination for exposure

Exposure control circuit with illumination mode

396187, 396242, G03B 7097, G03B 1503

Patent

active

059535458

ABSTRACT:
An exposure controlling device comprises, a controlling unit that controls, at the time of an exposure, the DC motor to rotate forward to open the shutter blades and then to rotate reversely to close the shutter blades, a calculating unit that calculates a time period for driving the DC motor in the forward direction between a predetermined starting point and a point where a required aperture area is obtained, a detecting unit that detects the starting point that is an intermediate point of the range of a shutter actuation, and a timer for counting the calculated time period.

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Copy of a French Search Report issued Mar. 3, 1998.
A United Kingdom Search Report, dated Apr. 14, 1997, issued with UK Application No. 9701546.5.

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