Imaging lens

Details Imaging lens Imaging lens

2010-12-17

2011-12-06

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S714000, C359S763000

Reexamination Certificate

active

08072695

ABSTRACT:
An imaging lens includes plastic-made first, second, third, fourth, and fifth lens elements arranged in the given order from an object side to an imaging side, each having object-side and imaging-side surfaces facing toward the object and imaging sides, respectively. The first lens element has a positive focusing power, and the object-side surface thereof is a convex surface. The second lens element has a negative focusing power, and the imaging-side surface thereof is a concave surface. The third lens element has a positive focusing power, and each of the imaging-side and object-side surfaces thereof is a convex surface. The fourth lens element is a meniscus lens, and the imaging-side surface thereof is a convex surface. The imaging-side surface of the fifth lens element has a concave area in a vicinity of an optical axis of the fifth lens element.

REFERENCES:
patent: 6476982 (2002-11-01), Kawakami
patent: 7110188 (2006-09-01), Matsui et al.
patent: 7443610 (2008-10-01), Lin et al.
patent: 7453654 (2008-11-01), Shinohara
patent: 7480105 (2009-01-01), Mori
patent: 7710665 (2010-05-01), Park et al.
patent: 7715118 (2010-05-01), Kato
patent: 2010/0277605 (2010-11-01), Nozaki et al.

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