Lens system for digital camera

Details Lens system for digital camera Lens system for digital camera

2007-05-01

2007-05-01

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S708000, C359S716000

Reexamination Certificate

active

11396985

ABSTRACT:
A lens system (46) for a digital camera consecutively includes a first lens element (20), a second lens element (30), and a third lens element (40). The first lens element is biconvex and has a first aspheric surface (22) and an opposite second aspheric surface (24). The second lens element is concavo-convex and includes a third aspheric surface (32) and an opposite fourth aspheric surface (34). The third lens element convexo-concave and has a fifth aspheric surface (42) and an opposite sixth aspheric surface (44). The first lens element is made of glass, and the second lens element and the third lens are made of optical plastic.

REFERENCES:
patent: 6947577 (2005-09-01), Stam et al.
patent: 7035023 (2006-04-01), Nanba et al.

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