Camera exposure control

Details Camera exposure control Camera exposure control

1992-01-27

1993-07-06

Gellner, Michael L.

3542891, G03B 1700

Patent

active

052258645

ABSTRACT:
A photographic camera comprises a camera housing with a viewfinder having a defined field of view, a hollow lens snout projecting from the camera housing forward of the viewfinder, a taking lens supported substantially at a front end of the lens snout, and exposure control means. The exposure control means is a single-piece part with a warning flag supported to be moved manually through a slit in the lens snout adjacent the forward end of the lens snout, between a non-operative position hidden inside the lens snout to prevent the warning flag from being seen in the field of view of the viewfinder and an operative position outside the lens snout to make the warning flag visible in the field of view of the viewfinder, and with a circular hole arranged relative to the warning flag to be located behind the taking lens to reduce the size of a lens apertue, when the warning flag is in its non-operative position, and to be located out from behind the taking lens to restore the size of the lens aperture, when the warning flag is in its operative position.

REFERENCES:
patent: 1512785 (1924-10-01), Mittasch
patent: 2015261 (1935-09-01), Eckler
patent: 2380216 (1945-07-01), Carter
patent: 3651748 (1972-03-01), Yoshiada
patent: 3906526 (1975-09-01), Toyoshima et al.

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