Single focus lens

Details Single focus lens Single focus lens

2007-04-03

2007-04-03

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S716000, C359S784000

Reexamination Certificate

active

11528659

ABSTRACT:
A single focus lens comprises: a first lens of positive power having a convex-shaped surface on an object side; a second lens of a negative meniscus lens having, on the object side, a concave-shaped surface on its paraxial axis; and a third lens of an aspheric lens having, on the object side, a convex-shaped surface on its paraxial axis, in this order from the object side, wherein the single focus lens satisfies the predetermined conditions.

REFERENCES:
patent: 6961191 (2005-11-01), Sato
patent: 6970306 (2005-11-01), Matsuo
patent: 7031079 (2006-04-01), Isono
patent: 7099092 (2006-08-01), Sato
patent: 2004/0190162 (2004-09-01), Sato
patent: 2005/0041306 (2005-02-01), Matsuo
patent: 2005/0094292 (2005-05-01), Cahall et al.
patent: 2005/0231823 (2005-10-01), Sato
patent: 2005/0275950 (2005-12-01), Kubota et al.
patent: 1 562 061 (2005-08-01), None
patent: 10-48516 (1998-02-01), None

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