发明授权
- 专利标题: Image pickup apparatus using zoom lens
- 专利标题(中): 使用变焦镜头的摄像装置
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申请号: US13333647申请日: 2011-12-21
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公开(公告)号: US08643764B2公开(公告)日: 2014-02-04
- 发明人: Masato Miyata , Naoki Fujii
- 申请人: Masato Miyata , Naoki Fujii
- 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: Straub & Pokotylo
- 代理商 John C. Pokotylo
- 优先权: JP2011-246425 20111110
- 主分类号: G02B13/16
- IPC分类号: G02B13/16 ; G02B15/14
摘要:
An image pickup apparatus includes a zoom lens having a first positive lens unit, and a first negative lens unit disposed on an object side of the first positive lens unit. A distance between the first positive lens unit and the first negative lens unit is narrowed at the time of zooming from a wide angle end to a telephoto end. The zoom lens includes an aperture stop disposed between a lens nearest to an image side in the first negative lens unit and a lens nearest to the image side in the first positive lens unit, and a light-amount reducing filter made of a resin material which is disposed on the image side of the lens nearest to the image side in the first positive lens unit, and which can be inserted in an optical path and withdrawn from the optical path. The zoom lens satisfies predetermined conditional expressions.
公开/授权文献
- US20130120638A1 IMAGE PICKUP APPARATUS USING ZOOM LENS 公开/授权日:2013-05-16