发明授权
US5159192A Encoder and scanning system using a scale having a non-uniform pitch
失效
使用具有不均匀间距的刻度的编码器和扫描系统
- 专利标题: Encoder and scanning system using a scale having a non-uniform pitch
- 专利标题(中): 使用具有不均匀间距的刻度的编码器和扫描系统
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申请号: US641891申请日: 1991-01-16
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公开(公告)号: US5159192A公开(公告)日: 1992-10-27
- 发明人: Tetsuharu Nishimura , Koh Ishizuka
- 申请人: Tetsuharu Nishimura , Koh Ishizuka
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX2-11532 19900120
- 主分类号: G01D5/38
- IPC分类号: G01D5/38 ; G01D5/347 ; G02B5/08 ; G02B26/10 ; H03M1/30
摘要:
A rotary encoder and a scanning system using the same for detecting rotation of a galvano scanner which comprises a rotary scale coupled to a rotating driver, a scale with slits formed at a non-uniform pitch circumferentially on the rotary scale within a limited rotation angle and detection means for detecting a rotation status by reading the slits.
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