Imaging lens

Details Imaging lens Imaging lens

2011-07-19

2011-07-19

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S716000, C359S740000

Reexamination Certificate

active

07982978

ABSTRACT:
An imaging lens includes a first lens group that includes sequentially from an object side, a first lens formed of resin and having a positive refractive power and a second lens formed of resin and having a negative refractive power, the first lens and the second lens collectively forming a cemented lens having a positive refractive power. The imaging lens further includes a second lens group that includes a negative lens having a convex surface directed toward an image plane and a third lens group that includes a positive lens, where the first lens group, the second lens group, and the third lens groups are sequentially arranged from the object side.

REFERENCES:
patent: 2002/0181121 (2002-12-01), Kawakami
patent: 2003/0184883 (2003-10-01), Sato et al.
patent: 2006/0119958 (2006-06-01), Jeong
patent: 2008/0174885 (2008-07-01), Choi et al.
patent: 2002-228922 (2002-08-01), None
patent: 2006-98976 (2006-04-01), None
patent: 2006-163340 (2006-06-01), None
patent: 2006-284620 (2006-10-01), None

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