Control means for photoflash photography system

Details Control means for photoflash photography system Control means for photoflash photography system

1976-07-08

1978-02-28

Hix, L. T.

354 33, 354 60F, 354145, G03B 700, G03B 1505

Patent

active

040770427

ABSTRACT:
A photoflash photography system includes a camera separably housing individual film cartridges carrying indicia, physical or electrical, representing the sensitivity of the film contained in the respective cartridge. A photoflash unit is coupled to the camera and has a light output which automatically varies inversely with the film sensitivity in response to the sensitivity indicia. The light output is varied by varying the charge voltage on the flash tube storage capacitor or the capacitor capacitance value. The electrical indicia may be resistors of different values and the physical indicia may be recesses of different depths or differently disposed shoulders or fingers which are detected by movable sensing members.

REFERENCES:
patent: 3176599 (1965-04-01), Anwyl
patent: 3410187 (1968-11-01), Kaneko
patent: 3648104 (1972-03-01), Ackermann
patent: 3667363 (1972-06-01), Tanaka
patent: 3742828 (1973-07-01), Nakajima et al.

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