Invention Grant
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
- Patent Title: Position detection device, position detection method, and imaging apparatus
- Patent Title (中): 位置检测装置，位置检测方法和成像装置
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Application No.: US13566728Application Date: 2012-08-03
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Publication No.: US08823862B2Publication Date: 2014-09-02
- Inventor: Soichiro Katsumata , Naoyuki Ohno
- Applicant: Soichiro Katsumata , Naoyuki Ohno
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Rader, Fishman & Grauer PLLC
- Priority: JP2011-180876 20110822
- Main IPC: H04N5/262
- IPC: H04N5/262 ; H04N5/232 ; H04N5/225 ; G01D5/244 ; G02B7/10 ; G01D1/00
Abstract:
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.
Public/Granted literature
- US20130050558A1 POSITION DETECTION DEVICE, POSITION DETECTION METHOD, AND IMAGING APPARATUS Public/Granted day:2013-02-28
Information query
