Image pick-up optical lens assembly

Details Image pick-up optical lens assembly Image pick-up optical lens assembly

2011-02-23

2011-11-29

Dinh, Jack (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S715000, C359S771000, C359S772000

Reexamination Certificate

active

08068290

ABSTRACT:
This invention provides an image pick-up 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 convex image-side surface; a second lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a third lens element with positive refractive power having an object-side surface and a convex image-side surface, at least one of the surfaces thereof being aspheric; and a fourth lens element with negative refractive power having a convex object-side surface and a concave image-side surface, at least one of the surfaces thereof being aspheric. The image pick-up optical lens assembly further comprises an aperture stop disposed between an object and the first lens element. Such arrangement facilitates a significant reduction in size and sensitivity of the lens assembly while providing superb image quality with higher resolution.

REFERENCES:
patent: 7012765 (2006-03-01), Matsui et al.
patent: 7145736 (2006-12-01), Noda
patent: 7365920 (2008-04-01), Noda
patent: 7755853 (2010-07-01), Taniyama

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