发明授权
- 专利标题： Zoom lens system
- 专利标题（中）： 变焦镜头系统
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申请号： US11045467申请日： 2005-01-27
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公开(公告)号： US07054072B2公开(公告)日： 2006-05-30
- 发明人: Makoto Sato
- 申请人： Makoto Sato
- 申请人地址： JP Tokyo
- 专利权人： Casio Computer Co., Ltd.
- 当前专利权人： Casio Computer Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Frishauf, Holtz, Goodman & Chick, P.C.
- 优先权： JP2004-023315 20040130; JP2004-273613 20040924; JP2004-276311 20040924
- 主分类号： G02B15/14
- IPC分类号： G02B15/14
摘要：
A zoom lens includes (i) a negative first lens group having a negative meniscus first lens element and a positive meniscus second lens element; and (ii) a positive second lens group having a positive third lens element, a positive fourth lens element, a negative fifth lens element which is cemented to the positive fourth lens element, and a sixth lens element having a weaker refractive power. Zooming is performed by moving the first lens group and the second lens group along the optical axis. The zoom lens system satisfies TL/fW
公开/授权文献
- US20050168831A1 Zoom Lens System 公开/授权日：2005-08-04
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