Digital camera imaging lens

Optical: systems and elements – Lens – With variable magnification

Reexamination Certificate

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Details

C359S791000

Reexamination Certificate

active

07400454

ABSTRACT:
A digital camera imaging lens includes first, second and third lenses arranged in sequence from an object side toward an imaging surface side. The first lens is a meniscus lens having a positive power, whose convex surface faces the object side. The second lens is a meniscus lens having a negative power, whose concave surface faces the object side. The third lens is an aspherical lens having an inflection point on its object-side surface. An aperture stop is disposed between the first and second lenses. The imaging surface is defined by an element surface of a photosensor.

REFERENCES:
patent: 4109995 (1978-08-01), Betensky
patent: 5940219 (1999-08-01), Yamada
patent: 6028711 (2000-02-01), Adachi
patent: 6441971 (2002-08-01), Ning
patent: 2004/0021957 (2004-02-01), Isono
patent: 62 109014 (1987-05-01), None
patent: 04 211214 (1992-08-01), None
patent: 10 301022 (1998-11-01), None
patent: 11 052227 (1999-02-01), None
patent: 11 052231 (1999-02-01), None
patent: 2002 228922 (2002-08-01), None
International Search Report dated Feb. 10, 2005 (4 pages).

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