Image pickup lens, image pickup apparatus and mobile terminal

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

2008-01-24

2009-10-13

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S784000, C359S811000

Reexamination Certificate

active

07602560

ABSTRACT:
The present invention provides an image pickup lens for forming an image of an object on a photoelectrical converter of a solid-state image pickup element. The image pickup lens includes: an aperture stop; a first lens having a positive refractive power and having a meniscus shape whose surface facing the object side is convex; a second lens having a negative refractive power whose surface facing an image side of the image pickup lens is concave; and a third lens having a positive refractive power and having a meniscus shape whose surface facing the object side is convex. Each of the first lens, the second lens, and the third lens includes an aspheric optical surface. The image pickup lens satisfies predetermined conditions according to a focal length of the first lens, and a refractive power of an air lens formed from surfaces of the second lens and the third lens.

REFERENCES:
patent: 7035023 (2006-04-01), Nanba et al.
patent: 2008/0239138 (2008-10-01), Sano
patent: 2005-308800 (2005-11-01), None
patent: 2006-133270 (2006-05-01), None

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