Photographing optical lens assembly

Details Photographing optical lens assembly Photographing optical lens assembly

2011-08-16

2011-08-16

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S645000, C359S651000, C359S738000, C359S739000, C359S784000

Reexamination Certificate

active

08000033

ABSTRACT:
The present invention provides a photographing optical lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, the object-side and image-side surfaces thereof being aspheric; and a third lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the object-side and image-side surfaces thereof being aspheric and at least one inflection point being formed on the image-side surface, wherein the lens assembly is further provided with a stop disposed between an object and the first lens element.

REFERENCES:
patent: 7436603 (2008-10-01), Huang et al.
patent: 7525741 (2009-04-01), Noda
patent: 7804653 (2010-09-01), Choi
patent: 7907356 (2011-03-01), Isono
patent: 2009/0046380 (2009-02-01), Tang
patent: 2010/0202065 (2010-08-01), Tang et al.
patent: 2010/0259838 (2010-10-01), Tsai et al.
patent: 2010/0321798 (2010-12-01), Chen et al.
patent: 2011/0090392 (2011-04-01), Tang et al.

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