发明申请
- 专利标题: Zoom lens and imaging apparatus
- 专利标题(中): 变焦镜头和成像设备
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申请号: US12659321申请日: 2010-03-04
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公开(公告)号: US20100265594A1公开(公告)日: 2010-10-21
- 发明人: Takumi Matsui , Makoto Kanai , Daisuke Kuroda , Hiroki Yamano
- 申请人: Takumi Matsui , Makoto Kanai , Daisuke Kuroda , Hiroki Yamano
- 申请人地址: JP Tokyo
- 专利权人: SONY CORPORATION
- 当前专利权人: SONY CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2009-103145 20090421
- 主分类号: G02B15/177
- IPC分类号: G02B15/177
摘要:
A zoom lens includes a negative first lens group, a positive second lens group, and a positive third lens group; wherein, when changing power from a wide-angle end state to a tele end state, the first lens group moves such that air space between the first lens group and the second lens group decreases, and air space between the second lens group and the third lens group increases, and the second lens group moves toward the object side; and wherein the first lens group includes a negative lens with both faces formed aspherically and the concave face facing the image side, and a positive meniscus lens with at least one face formed aspherically and the convex face facing the object side, satisfying 2.8
公开/授权文献
- US07880974B2 Zoom lens and imaging apparatus 公开/授权日:2011-02-01