发明申请
- 专利标题: ZOOM LENS
- 专利标题(中): 变焦镜头
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申请号: US13180159申请日: 2011-07-11
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公开(公告)号: US20120013990A1公开(公告)日: 2012-01-19
- 发明人: Akira YAMAMOTO
- 申请人: Akira YAMAMOTO
- 申请人地址: JP Tokyo
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: JP Tokyo
- 优先权: JP2010-162043 20100716
- 主分类号: G02B3/14
- IPC分类号: G02B3/14
摘要:
The zoom lens of the present invention includes a variable focus lens and a stop. The variable focus lens is disposed on the light incident side of the stop, and where a distance from a first surface to an image plane of the zoom lens is defined as Ta, and a distance from a variable refractive power surface closest to the stop of the variable focus lens to the stop is defined as Tb, the condition of Tb/Ta
公开/授权文献
- US08520314B2 Zoom lens 公开/授权日:2013-08-27
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