Imaging lens

Details Imaging lens Imaging lens

2006-06-30

2008-10-28

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S773000, C359S774000

Reexamination Certificate

active

07443611

ABSTRACT:
An imaging lens is provided and includes: a first lens of a positive lens; a second lens of a negative lens whose concave surface faces to an image side of the second lens; a third lens of a positive lens, whose both surfaces are aspheric, having a concave surface facing to an object side of the third lens; and a fourth lens of a meniscus lens, whose both surfaces are aspheric, having a convex surface facing to the object side near the optical axis, the lenses being arranged in this order from an object side, the first imaging lens satisfying the conditional expressions specified in the specification.

REFERENCES:
patent: 6476982 (2002-11-01), Kawakami et al.
patent: 6795253 (2004-09-01), Shinohara et al.
patent: 6917479 (2005-07-01), Park et al.
patent: 2004/0141242 (2004-07-01), Abe
patent: 2004/0228009 (2004-11-01), Kamo et al.
patent: 2007/0081259 (2007-04-01), Noda
patent: 2003-322792 (2003-11-01), None

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