Brightness measuring device for a camera and related control...

Details Brightness measuring device for a camera and related control... Brightness measuring device for a camera and related control...

G - Physics

01

J

G01J 1/44 (2006.01) G03B 7/091 (2006.01) G03B 7/093 (2006.01)

Patent

CA 2127076

ABSTRACT OF THE INVENTION A brightness measuring device for a camera including a device for activating the brightness measuring device. The bright measuring device includes a device for accumulating electrical energy representing the level of a detected ambient brightness of an object, a device for measuring time between when the activating device activates the brightness measuring device and when the accumulating device accumulates electrical energy to a reference level, and a device for determining a proper exposure value based on measured time.

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