Title:
IMAGE PICKUP LENS
Document Type and Number:
WIPO Patent Application WO/2011/129319
Kind Code:
A1
Abstract:
Disclosed is an image pickup lens, which has aberrations excellently corrected and is configured of five lenses, even with a small size. Sequentially from the object side, the image pickup lens (10) is provided with: a first lens (L1), which has positive refractive power, and which has the convex surface facing the object side; a meniscus-shaped second lens (L2), which has negative refractive power, and which has the concave surface facing the image side; a third lens (L3), which has positive refractive power; a fourth lens (L4), which has positive refractive power, and which has the convex surface facing the image side; and a fifth lens (L5), which has negative refractive power, and which has the concave surface facing the image side. The focal point distance of the fifth lens, the focal point distance of the whole system of the image pickup lens, and the air space between the fourth lens and the fifth lens, said air space being on the optical axis, satisfy predetermined conditions.
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Inventors:
SANO EIGO (JP)
Application Number:
PCT/JP2011/059055
Publication Date:
October 20, 2011
Filing Date:
April 12, 2011
Export Citation:
Assignee:
KONICA MINOLTA OPTO INC (JP)
SANO EIGO (JP)
SANO EIGO (JP)
International Classes:
G02B13/18; G02B13/00
Domestic Patent References:
| WO2010024198A1 | 2010-03-04 |
Foreign References:
| JP2011095513A | 2011-05-12 | |||
| JP2010262269A | 2010-11-18 | |||
| JP2010262270A | 2010-11-18 | |||
| JP2010079296A | 2010-04-08 |
Attorney, Agent or Firm:
FUKUDA, MITSUHIRO (JP)
Mitsuhiro Fukuda (JP)
Mitsuhiro Fukuda (JP)
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Claims: