发明申请
- 专利标题： Polaroid absolute encoder
- 专利标题（中）： 宝丽来绝对编码器
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申请号： US10810173申请日： 2004-03-26
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公开(公告)号： US20050211886A1公开(公告)日： 2005-09-29
- 发明人: Yee Chin , Kee Goh , Chee Chong
- 申请人： Yee Chin , Kee Goh , Chee Chong
- 主分类号： G01D5/34
- IPC分类号： G01D5/34 ; G01D5/347
摘要：
A polaroid encoder system for detecting movement is disclosed. The system includes a movable polarizing code element. A detector module detects an amplitude based on how much illumination passes through one portion of the movable polarizing code element. A quadrant of the movable polarizing code element is determined based on how much illumination passes through another portion of the movable polarizing code element. The angular position of the movable polarizing code element can then be determined by using amplitude and the quadrant information.
公开/授权文献
- US07622707B2 Polaroid absolute encoder 公开/授权日：2009-11-24
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