Kenyon & Kenyon LLP
Position-measuring device
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.
Dr. Johannes Heidenhain GmbH
G G G
G01D G01D G01D
inventional inventional inventional
Wolfgang Michael Karsten
Holzapfel Hermann Saendig