发明授权
- 专利标题: Zoom lens and image pickup apparatus having the same
- 专利标题(中): 具有相同的变焦镜头和摄像装置
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申请号: US11064532申请日: 2005-02-24
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公开(公告)号: US06972909B2公开(公告)日: 2005-12-06
- 发明人: Hiroyuki Hamano , Nobuyuki Miyazawa
- 申请人: Hiroyuki Hamano , Nobuyuki Miyazawa
- 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
- 代理机构: Morgan & Finnegan, LLP
- 优先权: JP2004-052204 20040226
- 主分类号: G02B15/167
- IPC分类号: G02B15/167 ; G02B13/18 ; G02B15/14 ; G02B15/20 ; H04N5/225 ; H04N101/00
摘要:
The zoom lens has, in order from the object to image sides, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a positive refractive power, wherein the second lens unit and the fourth lens unit move during zooming. The following condition is satisfied: υ23 1.9, −1.0
公开/授权文献
- US20050190458A1 Zoom lens and image pickup apparatus having the same 公开/授权日:2005-09-01
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