发明授权
US08503096B2 Inner focus lens, interchangeable lens apparatus and camera system
有权
内聚焦镜头，可互换镜头设备和相机系统
- 专利标题： Inner focus lens, interchangeable lens apparatus and camera system
- 专利标题（中）： 内聚焦镜头，可互换镜头设备和相机系统
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申请号： US13441007申请日： 2012-04-06
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公开(公告)号： US08503096B2公开(公告)日： 2013-08-06
- 发明人: Takuya Imaoka , Koji Hoshi , Hitoshi Hagimori
- 申请人： Takuya Imaoka , Koji Hoshi , Hitoshi Hagimori
- 申请人地址： JP Kadoma-shi
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Kadoma-shi
- 代理机构： Judge Patent Associates
- 优先权： JP2011-085154 20110407; JP2012-040218 20120227
- 主分类号： G02B15/14
- IPC分类号： G02B15/14 ; G02B7/02
摘要：
An inner focus lens, in order from an object side to an image side, comprising: a first lens unit having positive optical power; a second lens unit having negative optical power; and a third lens unit having positive optical power, wherein the second lens unit is moved along an optical axis so that focusing from an infinite-distance object side to a short-distance object side is achieved, the first lens unit includes a bi-convex air lens, and the following conditions: 0.65
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