Patent ID: 7114265
Filing Date: 2006-10-03
Classification: G01B

Abstract:
1. A device for detecting a spatial position of a probe element in a multi-coordinate measuring apparatus, comprising: a reference system having at least one first and one second standard that are associated with coordinate axes of the measuring apparatus, the first standard being a planar standard having a main surface carrying a line grating array which includes at least one two-dimensional line grating, and the second standard being movable in two dimensions and non-contacting relative to the first standard, said second standard comprising an elongate prismatic body carrying two-dimensional line gratings on a first and a second surface thereof, and wherein the second standard is provided on a column on which a carriage is movable along a guide, and extends parallel to the guide of the carriage; a first position measuring system for determining the spatial position of the second standard with respect to the first standard; and a second position measuring system for determining the spatial position of a support member fixedly connectable with or integrated into the carriage with respect to the second standard.