Automatic exposure control circuit for an image intensifier came

Details Automatic exposure control circuit for an image intensifier came Automatic exposure control circuit for an image intensifier came

1974-04-04

1976-09-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250206, H01J 3150

Patent

active

039808807

ABSTRACT:
This invention relates to automatic exposure control for an image-intensiation photographic camera through the employment of a capacitor discharge circuit. The electrical energy stored in a capacitor is discharged to activate an image intensifier tube which forms part of the photographic camera system. The characteristics of the capacitor discharge circuit are chosen to correspond to the energy required for proper exposure time through the image intensifier tube and onto a photographic emulsion.

REFERENCES:
patent: 2927215 (1960-03-01), Allen et al.
patent: 3436550 (1969-04-01), Finkle
patent: 3689770 (1972-09-01), Dion

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