Electronic flash unit utilizing pre-flash illumination of flasht

Details Electronic flash unit utilizing pre-flash illumination of flasht Electronic flash unit utilizing pre-flash illumination of flasht

1983-08-08

1985-11-26

Moore, David K.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315150, 3541451, H05B 4132

Patent

active

045556482

ABSTRACT:
An electronic flash unit for emitting flashlight toward an object to be photographed in order that a camera may obtain proper exposure comprises flash means having a flash tube which emits flashlight, means for driving the flash tube in order that the flash tube may emit flashlight, and means for applying light to the interior of the flash tube prior to the driving means causing the flash tube to emit flashlight.

REFERENCES:
patent: 3127112 (1964-03-01), McCammon et al.
patent: 4246513 (1981-01-01), Pettit et al.
patent: 4369395 (1983-01-01), Stempeck

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