Patent · US Active

System having a plurality of scanning units of a position measuring device

US8842295B2 · kind B2 · utility

0Cited by

3References

11Claims

0Family size

Assignee

JOHANNES HEIDENHAIN GmbH · DE

Inventors

Wolfgang Holzapfel · Obing, DE
Joerg Drescher · Riedering, DE
Markus Meissner · Teupitz, DE
Ralph Joerger · Traunstein, DE
Bernhard Musch · Otterfing, DE
Thomas Kaelberer · Schrobenhausen, DE

Key dates

Filing date	Feb 6, 2013
Grant date	Sep 23, 2014
Priority date	—
Expiry date	Feb 6, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01D2205/90
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a system for detecting the position of an object in relation to a reference system, the object is arranged so as to be movable in relation to the reference system along at least two orthogonal first and second main movement axes. To record the position of the object in relation to the reference system, a position measuring device includes at least two two-dimensional measuring standards situated along the first main movement axis, and four scanning units for an optical scanning of these measuring standards. In addition, at least four additional supplementary scanning units are provided, which are situated between the four scanning units along the first main movement axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.