Energy efficient charging apparatus for an electronic flash

Details Energy efficient charging apparatus for an electronic flash Energy efficient charging apparatus for an electronic flash

1983-04-11

1984-09-11

Perkey, William B.

3541451, 35414911, G03B 1505

Patent

active

044706847

ABSTRACT:
A camera having electronic flash apparatus for flash photography includes a rangefinder for measuring distance to a subject to be photographed, and circuitry for regulating a DC to DC converter to limit charging of the flash apparatus to a voltage corresponding to flash illumination that is necessary to effect a predetermined flash exposure of a subject situated at the distance measured by the rangefinder.

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