发明授权
- 专利标题： Position measurement system
- 专利标题（中）： 位置测量系统
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申请号： US11206974申请日： 2005-08-19
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公开(公告)号： US07474418B2公开(公告)日： 2009-01-06
- 发明人: Yasuji Seko , Yoshinori Yamaguchi , Hiroyuki Miyake
- 申请人： Yasuji Seko , Yoshinori Yamaguchi , Hiroyuki Miyake
- 申请人地址： JP Tokyo
- 专利权人： Fuji Xerox Co., Ltd.
- 当前专利权人： Fuji Xerox Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JPP2005-090830 20050328
- 主分类号： G01B11/26
- IPC分类号： G01B11/26
摘要：
A position measurement system includes a photographing unit and an arithmetic processing unit. The photographing unit has a lens and a light-receiving element. The lens forms an optical ring image from light from a light source through spherical aberration. The light-receiving element detects the optical ring image formed by the lens. The arithmetic processing unit measures a distance to the light source on the basis of the quantity of light of the optical ring image detected by the light-receiving element.
公开/授权文献
- US20060215178A1 Position measurement system 公开/授权日：2006-09-28
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