Electric flash apparatus

Details Electric flash apparatus Electric flash apparatus

1981-07-23

1983-11-15

Adams, Russell E.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

354132, 315151, G03B 716

Patent

active

044152477

ABSTRACT:
The invention provides an electric flash apparatus comprising a first flash unit incorporated into a camera, a second flash unit mounted detachably and outwardly on said camera, light quantity control means for controlling flash light of said first and second flash unit, flash timing control means for controlling flash lights of said first and second flash unit and a flash driving circuit commonly used to said first and second flash units. The flash driving circuit can activate the flash operations of at one of said flash units, both of said first flash unit and said second flash unit.

REFERENCES:
patent: 3980923 (1976-09-01), Schneider
patent: 4242616 (1980-12-01), Takematsu
patent: 4337416 (1982-06-01), Takematsu
patent: 4354141 (1982-10-01), Takematsu
patent: 4360764 (1982-11-01), Yagi

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