发明申请
US20120013990A1 ZOOM LENS 有权
变焦镜头

  • 专利标题: ZOOM LENS
  • 专利标题(中): 变焦镜头
  • 申请号: US13180159
    申请日: 2011-07-11
  • 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
ZOOM LENS
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
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