发明名称 |
OPTICAL ROTARY ENCODER |
摘要 |
An optical rotary encoder includes a slit plate having a plurality of circumferentially aligned slits of a pitch P, a light emitting diode, and a light responsive section. The light responsive section includes four photodiodes formed on a single substrate. The four photodiodes are aligned in the tangential direction of the slit plate with the interval corresponding to 1/4 P. Output signals derived from each of the four photodiodes are introduced into a detection circuit for determining the angular position and velocity of a rotating shaft to which the slit plate is secured. |
申请公布号 |
EP0102241(B1) |
申请公布日期 |
1989.06.07 |
申请号 |
EP19830304927 |
申请日期 |
1983.08.25 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
EBINA, KIYOSHI;NAKAO, KAZUHIRO;TANI, ZEMPEI |
分类号 |
G01D5/244;G01D5/36;G01P3/486;H03M1/00 |
主分类号 |
G01D5/244 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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