发明授权
- 专利标题： Zoom lens system and image pickup apparatus using the same
- 专利标题（中）： 变焦镜头系统及使用其的摄像装置
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申请号： US11594506申请日： 2006-11-07
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公开(公告)号： US07471459B2公开(公告)日： 2008-12-30
- 发明人: Masashi Hankawa , Masahito Watanabe , Kouki Hozumi , Kazuya Nishimura , Takahiro Amanai , Toru Miyajima
- 申请人： Masashi Hankawa , Masahito Watanabe , Kouki Hozumi , Kazuya Nishimura , Takahiro Amanai , Toru Miyajima
- 申请人地址： JP Tokyo
- 专利权人： Olympus Imaging Corp.
- 当前专利权人： Olympus Imaging Corp.
- 当前专利权人地址： JP Tokyo
- 代理机构： Kenyon & Kenyon LLP
- 优先权： JP2005-325911 20051110; JP2006-145074 20060525
- 主分类号： G02B15/14
- IPC分类号： G02B15/14
摘要：
A three-unit zoom lens system comprising, in order from an object side, a first lens unit having a negative refractive power; a second lens unit having a positive refractive power; and a third lens unit having a positive or negative refractive power, wherein during magnification change from a wide-angle end to a telephoto end, a space between the first lens unit and the second lens unit narrows, the second lens unit and the third lens unit move toward the only object side, and a space between the second lens unit and the third lens unit changes during a focusing operation.
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