Title:
撮像レンズおよび撮像装置
Document Type and Number:
Japanese Patent JP5847829
Kind Code:
B2
Abstract:
An imaging lens substantially consists of six lenses of a negative first lens, a negative second lens, a positive third lens, a positive fourth lens, a negative fifth lens and a positive sixth lens in this order from an object side. An object-side surface of the second lens has a shape having negative refractive power at a center, and including a part having positive refractive power in an area between the center and an effective diameter edge, and having negative refractive power at the effective diameter edge (concave shape facing the object side), and the refractive power at the effective diameter edge being weaker than the refractive power at the center. Further, an object-side surface of the third lens is convex toward the object side. Further, a predetermined conditional formula about a combined focal length of the first lens, the second lens and the third lens is satisfied.
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Inventors:
Taro Asami
Toshiaki Katsuma
Toru Ito
Toshiaki Katsuma
Toru Ito
Application Number:
JP2013535858A
Publication Date:
January 27, 2016
Filing Date:
September 12, 2012
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B13/04; G02B13/18
Domestic Patent References:
| JP2010169848A | ||||
| JP2009092797A | ||||
| JP2010160479A | ||||
| JP2009092798A | ||||
| JP2012093717A |
Foreign References:
| US20090073577 |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma