Viewfinder

Details Viewfinder Viewfinder

1988-01-13

1988-08-16

Mathews, A. A.

G03B 1302

Patent

active

047647850

ABSTRACT:
A viewfinder for indicating substantially how much of a subject an objective lens projects on to the film in a camera comprises a frame for viewing the portion of the subject to be recorded on the film. The frame includes a lattice like arrangement of spaced light baffles which define relatively small viewing openings between the baffles for viewing the subject through the openings. Each of the light baffles has a length which is sufficient with respect to the optical axis of the the objective lens to block from view ambient light reflected to the viewing openings from outside the portion of the subject the lens projects on to the film. Thus when the eye is brought relatively close to the lattice like arrangement the view through the viewing openings will be substantially coincident with the portion of the subject recorded on the film, since the area outside that portion will appear blackened. This effect is achieved without having to center the eye with respect to the lattice like arrangement.

REFERENCES:
patent: 2841064 (1958-07-01), Bagby et al.
patent: 3073223 (1963-01-01), Stimson
patent: 4216589 (1980-08-01), Beaver
patent: 4634253 (1987-01-01), Tamamura

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