再颁专利
- 专利标题: Imaging lens
- 专利标题(中): 成像镜头
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申请号: US12397270申请日: 2009-03-03
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公开(公告)号: USRE42642E1公开(公告)日: 2011-08-23
- 发明人: Kenichi Sato , Minoru Taniyama
- 申请人: Kenichi Sato , Minoru Taniyama
- 申请人地址: JP Saitama-Shi
- 专利权人: Fujinon Corporation
- 当前专利权人: Fujinon Corporation
- 当前专利权人地址: JP Saitama-Shi
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2006-087410 20060328
- 主分类号: G02B13/04
- IPC分类号: G02B13/04 ; G02B13/18
摘要:
An imaging lens comprises, in order from an object side: a first lens having a positive refractive power; a second lens having a negative refractive power whose concave surface faces to the object; and a third lens having a positive refractive power and having a meniscus form that has a convex surface, facing to the object, in a portion at and around an optical axis of the imaging lens; wherein the first, second and third lenses have at least one aspheric surface, and wherein the imaging lens satisfies conditional expressions given below: 0.7
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