Andrews Kurth Kenyon LLP
Optical position-measuring device
An optical position-measuring device includes a measuring standard as well as a scanning unit movable relative to it along at least one measuring direction, a scanning beam path being formed between the measuring standard and scanning unit and being used to generate displacement-dependent signals. A protective cap is disposed in a manner allowing movement along an axis perpendicular to the measuring-standard plane such that in at least one operating mode, the protective cap for the most part surrounds the scanning beam path between the scanning unit and measuring standard.
Dr. Johannes Heidenhain GmbH
G G G G
G01B G01B G01D G01J
inventional inventional inventional inventional
Markus Jörg Wolfgang
Meissner Drescher Holzapfel