Invention Grant
- Patent Title: Position-measuring device
- Patent Title (中): 位置测量装置
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Application No.: US11942413Application Date: 2007-11-19
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Publication No.: US07858922B2Publication Date: 2010-12-28
- Inventor: Wolfgang Holzapfel , Michael Hermann , Karsten Saendig
- Applicant: Wolfgang Holzapfel , Michael Hermann , Karsten Saendig
- Applicant Address: DE Traunreut
- Assignee: Dr. Johannes Heidenhain GmbH
- Current Assignee: Dr. Johannes Heidenhain GmbH
- Current Assignee Address: DE Traunreut
- Agency: Kenyon & Kenyon LLP
- Priority: DE102006054780 20061120; DE102007035345 20070727; EP07019810 20071010
- Main IPC: G01D5/34
- IPC: G01D5/34

Abstract:
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.
Public/Granted literature
- US20080067333A1 POSITION-MEASURING DEVICE Public/Granted day:2008-03-20
Information query
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