Two magnification three mask viewfinder

Details Two magnification three mask viewfinder Two magnification three mask viewfinder

1991-04-08

1991-10-22

Gellner, Michael L.

G03B 1312

Patent

active

050599941

ABSTRACT:
A photographic camera is provided with a viewfinder having two lens assemblies and a separate mask. A movable member for positioning the two lens assemblies and the mask has a first position wherein the first lens assembly is in alignment with a viewing axis, a second position wherein the second lens assembly is in alignment with the viewing axis and a third position wherein both the second lens assembly and the mask are in alignment with the viewing axis. A lost motion connection between the second lens assembly and the mask enable the second lens assembly and the mask to be aligned in the third position.

REFERENCES:
patent: Re32797 (1988-12-01), Harvey
patent: 2943549 (1960-07-01), Nerwin
patent: 4038673 (1977-07-01), Schroder
patent: 4256396 (1981-03-01), Kawaguchi
patent: 4973997 (1990-11-01), Harvey

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