Lens having wavelike lens element

Details Lens having wavelike lens element Lens having wavelike lens element

2006-10-31

2006-10-31

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S789000

Reexamination Certificate

active

07130133

ABSTRACT:
A lens that can be used in a digital camera includes in sequence a first lens element (20), a second lens element (30) and a third lens element (40). The first lens element is biconvex, and includes a first aspheric surface (22) and a second aspheric surface (24). The second lens is concavo-convex, and includes a third aspheric surface (32) and a fourth aspheric surface (34). The third lens includes a wavelike fifth aspheric surface (42) and a wavelike sixth aspheric surface (44). All of the lens elements are made of glass. The lens has a compact volume, and provides stable imaging performance and good image quality.

REFERENCES:
patent: 6844989 (2005-01-01), Jo et al.
patent: 6970306 (2005-11-01), Matsuo
patent: 6977779 (2005-12-01), Shinohara
patent: 2003/0029332 (2003-02-01), Matsuzuki et al.
patent: 2004/0246598 (2004-12-01), Amanai
patent: 2511990 (2002-09-01), None

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