发明授权
- 专利标题: Zoom lens and image pickup apparatus equipped with same
- 专利标题(中): 变焦镜头和配备相机的摄像设备
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申请号: US12927984申请日: 2010-11-30
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公开(公告)号: US08199412B2公开(公告)日: 2012-06-12
- 发明人: Tomoyuki Satori , Hideyuki Nagaoka , Kenji Ono
- 申请人: Tomoyuki Satori , Hideyuki Nagaoka , Kenji Ono
- 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: JP2009-273425 20091201
- 主分类号: G02B15/14
- IPC分类号: G02B15/14
摘要:
A zoom lens includes, in order from the object side, an object side lens group having a negative refracting power at the wide angle end and including at least one negative lens unit, and an image side lens group having a positive refracting power at the wide angle end and including at least one positive lens unit including a cemented doublet lens component. The distance between the two lens groups is smaller at the telephoto end than at the wide angle end. The cemented doublet lens component includes, in order from the object side, a negative object side lens having a concave surface facing the image side, and positive image side lens having a meniscus shape with a concave surface facing the image side. The cemented doublet lens component is located closest to the image side in the positive lens unit. The zoom lens satisfies specific conditions.
公开/授权文献
- US20110128416A1 Zoom lens and image pickup apparatus equipped with same 公开/授权日:2011-06-02
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