Patent ID: 6597870
Filing Date: 2003-07-22
Classification: G03B

Abstract:
A lens-fitted photo film unit loaded with an unexposed photographic film in advance, comprising:a single taking lens for forming an image on said photographic film; a stop plate disposed at an image-forming side of said taking lens and moving in a perpendicular direction to an optical axis of said taking lens; a stop aperture of a small size formed in said stop plate; a stop changing mechanism for moving said stop plate between a smaller-stop position where said stop aperture is positioned at said optical axis, and a larger-stop position where said stop aperture is evacuated from said optical axis; a lens base for supporting the image-forming side of said taking lens, said lens base being formed with a fixed stop aperture of a large size; and a concave formed in said lens base, a part of the stop plate entering said concave when said stop plate is set to the smaller-stop position, and said stop plate being evacuated from said concave when said stop plate is set to the larger-stop position.