Automatic focusing lens assembly in a camera

Details Automatic focusing lens assembly in a camera Automatic focusing lens assembly in a camera

2006-08-08

2006-08-08

Perkey, W. B. (Department: 2851)

Photography

Camera detail

C396S089000, C359S771000, C359S779000

Reexamination Certificate

active

07086790

ABSTRACT:
A lens assembly in a camera includes a first meniscus lens (10) and a second meniscus lens (11) respectively having a first radius of curvature (A,A′) and a second radius of curvature (B,B′) larger than that of the first radius of curvature A,A′), a concave lens (12) having a first radius of curvature (C) and a second radius of curvature (C′) smaller than the first radius of curvature (C), and a convex lens (13) having two opposite sides with a radius of curvature so that after a distance between the lens to the object is determined, a clear image is presented.

REFERENCES:
patent: 2432387 (1947-12-01), Creighton
patent: 4787724 (1988-11-01), Kudo et al.
patent: 6239921 (2001-05-01), Isono
patent: 6549344 (2003-04-01), Tsutsumi

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