Lens-fitted photographic film unit with picture frame size chang

Details Lens-fitted photographic film unit with picture frame size chang Lens-fitted photographic film unit with picture frame size chang

1995-10-12

1997-08-19

Metjahic, Safet

Photography

With viewfinder

Selective or adjustable viewfinder field

396435, G03B 1310, G03B 1702

Patent

active

056598262

ABSTRACT:
A picture frame size changing device for a lens-fitted photographic film unit has a pair of exposure aperture masking plates which are pivotally mounted in a light-shielding box disposed in front of an exposure aperture. The masking plates define a picture frame size which has a different aspect ratio from that of the exposure aperture. A finder mask is mounted on a front cover of the film unit, which is manually operable to be inserted in front of an objective window of a viewfinder. A lever mechanism for interconnecting the finder mask with one of the mask plates is mounted on the outside of the light-shielding box. The light-shielding box is incorporated into a photograph-taking unit having an exposure mechanism and a viewfinder optical system mounted thereon.

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patent: 5257055 (1993-10-01), Cho et al.
patent: 5329330 (1994-07-01), Sakai et al.

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