发明名称 |
Position-measuring device |
摘要 |
A position-measuring device includes a scanning unit and a measuring graduation that is displaceable thereto in at least one measuring direction. The measuring graduation includes two incremental-graduation tracks extending in parallel in the measuring direction, between which a reference-marking track having at least one reference marking at a reference position extends. The scanning unit includes a first scanning device for generating the reference-pulse signal and a second scanning device for generating the incremental signals. To generate the incremental signals, a scanning beam acts at least once upon each incremental graduation in an incremental-signal scanning field.
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申请公布号 |
US7858922(B2) |
申请公布日期 |
2010.12.28 |
申请号 |
US20070942413 |
申请日期 |
2007.11.19 |
申请人 |
DR. JOHANNES HEIDENHAIN GMBH |
发明人 |
HOLZAPFEL WOLFGANG;HERMANN MICHAEL;SAENDIG KARSTEN |
分类号 |
G01D5/34 |
主分类号 |
G01D5/34 |
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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