发明授权
US08823862B2 Position detection device, position detection method, and imaging apparatus
有权
位置检测装置，位置检测方法和成像装置
- 专利标题： Position detection device, position detection method, and imaging apparatus
- 专利标题（中）： 位置检测装置，位置检测方法和成像装置
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申请号： US13566728申请日： 2012-08-03
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公开(公告)号： US08823862B2公开(公告)日： 2014-09-02
- 发明人: Soichiro Katsumata , Naoyuki Ohno
- 申请人： Soichiro Katsumata , Naoyuki Ohno
- 申请人地址： JP Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Rader, Fishman & Grauer PLLC
- 优先权： JP2011-180876 20110822
- 主分类号： H04N5/262
- IPC分类号： H04N5/262 ; H04N5/232 ; H04N5/225 ; G01D5/244 ; G02B7/10 ; G01D1/00
摘要：
There is provided a position detection device including a first detection sensor that operates in a predetermined direction, outputs a continuously increasing or decreasing signal, and detects an absolute position of a movable lens moved in an optical axis direction, and a second detection sensor that operates in the predetermined direction, outputs a periodically and continuously changing signal, and detects a relative position of the movable lens. The first detection sensor and the second detection sensor operate at different operation speeds.
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