Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Load device irradiating the radiant energy responsive device
Patent
1981-03-02
1983-04-12
La Roche, Eugene R.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Load device irradiating the radiant energy responsive device
315133, 315134, 354 33, 354 60L, 354128, 354145, H05B 4132
Patent
active
043799833
ABSTRACT:
A flash device of the invention comprises, substantially, a flash unit for generating flash light and a flash control unit for controlling the flash light generated from said flash unit. The flash unit comprises electric power supplying means for supplying electric power, electric energy storing means for storing the electric energy supplied from said electric power supplying means, flash light generating means for converting the electrical energy stored in said electric energy storing means to an optical energy, and said flash control unit comprises, substantially, light receiving means for receiving a reflecting light, flash light quantity detecting means for detecting flash light quantity, means for indicating light exposure quantity, and flash light quantity control means. The flash device of the present invention is convenient to adjust the photographing distance and a diaphragm of a camera in photographing.
REFERENCES:
patent: 4198141 (1980-04-01), Tominaga et al.
patent: 4258991 (1981-03-01), Kuraishi
patent: 4259615 (1981-03-01), Kashihara et al.
patent: 4294528 (1981-10-01), Ohta et al.
patent: 4306176 (1981-12-01), Kaneko et al.
Fuji Koeki Corporation
La Roche Eugene R.
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