Image pickup lens, image pickup unit and mobile terminal

Details Image pickup lens, image pickup unit and mobile terminal Image pickup lens, image pickup unit and mobile terminal

2011-08-23

2011-08-23

Choi, William C (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

Reexamination Certificate

active

08004777

ABSTRACT:
An image pickup lens includes: an aperture stop; a first lens having a positive power and including a convex surface facing an object side; a second lens having a negative power and including a concave surface facing an image side; a third lens in a meniscus shape having a positive power and including a convex surface facing the image side; and a fourth lens in a meniscus shape having a negative power and including a convex surface facing the object side. The image pickup lens satisfies predetermined conditions relating to a composite focal length of the first through third lenses, a length of an air space between the third lens and the fourth lens along the optical axis, and a curvature radius of a surface of the second lens facing the image side.

REFERENCES:
patent: 7558008 (2009-07-01), Nakagawa
patent: 2007/0008625 (2007-01-01), Park et al.
patent: 2010/0172024 (2010-07-01), Sakagami
patent: 2002-365530 (2002-12-01), None
patent: 2002365530 (2002-12-01), None
patent: 2004341013 (2004-12-01), None
patent: 2007-264498 (2007-10-01), None

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