Test flash device for flash discharger

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United States of America Patent

PATENT NO 4486690
SERIAL NO

06579751

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Abstract

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A test flash device in a photographic flash discharger which includes a photometric circuit including an integrator and exposed to light emitted from a flash discharger tube and reflected by an object to be photographed. A light emission stopping circuit is provided to stop light emission in response to a signal from the photometric circuit. A display circuit is provided to present a change in display when light emission stops. A test flash circuit is provided which regulates the time of light emission during test flashing to a predetermined short time.

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Patent Owner(s)

  • FUJI KOEKI CORPORATION;OWENS-ILLINOIS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takematsu, Yoshiyuki Tokyo, JP 29 166

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