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Title:
広角撮像レンズおよび撮像装置
Document Type and Number:
Japanese Patent JP5301898
Kind Code:
B2
Abstract:

To obtain an excellent image by a wide angle imaging lens which is constituted to be compact and inexpensive.

The wide angle imaging lens includes, in order from an object side, a first lens L1 that is a negative meniscus turning its convex surface to the object side, a second lens L2 that is a negative lens turning its concave surface to an image side and having at least one aspherical surface, a third lens L3 that is a positive lens turning its convex surface to the object side and having at least one aspherical surface, and a fourth lens L4 turning its convex surface to the image side and having at least one aspherical surface. When a focal length of the first lens L1 is defined as f1 and a focal length of the second lens L2 is defined as f2, they satisfy a conditional expression (1): 7.0COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
Hiromitsu Yamakawa
Application Number:
JP2008175324A
Publication Date:
September 25, 2013
Filing Date:
July 04, 2008
Export Citation:
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Assignee:
FUJIFILM Corporation
International Classes:
G02B13/04; G02B13/18
Domestic Patent References:
JP2007279548A
JP2007025499A
JP2006259704A
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma