Test flash device for flash discharger

Details Test flash device for flash discharger Test flash device for flash discharger

1984-02-14

1984-12-04

Moore, David K.

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Load device irradiating the radiant energy responsive device

354415, 354416, 3541271, 35412711, 315241P, H05B 4132

Patent

active

044866909

ABSTRACT:
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.

REFERENCES:
patent: 3680457 (1972-08-01), Uno et al.
patent: 4012665 (1977-03-01), Nakamura et al.
patent: 4256995 (1981-03-01), Ishida
patent: 4344680 (1982-08-01), Ishida et al.
patent: 4382666 (1983-05-01), Ohtaki et al.
patent: 4429971 (1984-02-01), Mizokami
patent: 4444483 (1984-04-01), Nakajima

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