Flip flash having final flash signal

Details Flip flash having final flash signal Flip flash having final flash signal

1977-06-09

1979-06-19

Hix, L. T.

Illumination

Photographic lighting

Plural light sources or light source supports

354128, 431359, G03B 1502

Patent

active

041588797

ABSTRACT:
A photoflash unit for use with a camera having a shutter mechanism, a firing pulse source, and an inhibiting arrangement connected to the shutter mechanism, the inhibiting arrangement including a detecting network for sensing first and second resistance conditions, and, in response to the second resistance condition, for inhibiting operation of the shutter mechanism. The unit comprises a multiple array of photoflash lamps adapted for connection of a given array to the firing pulse source and arranged with each lamp of the array to be fired individually and sequentially thereby, and including a radiant energy responsive switch positioned adjacent the last lamp of the given array so as to initially provide the first resistance condition, and then provide the second resistance condition in response to the firing of the last lamp.

REFERENCES:
patent: 3567351 (1971-03-01), Harvey
patent: 3692995 (1972-09-01), Wagner
patent: 3707903 (1973-01-01), Weber
patent: 3728068 (1973-04-01), Cote
patent: 3952320 (1976-04-01), Blount
patent: 4005449 (1977-01-01), Ellon
patent: 4048487 (1977-09-01), Kewely
patent: 4064431 (1977-12-01), Cote

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