Patent ID: 7823295

Claim:
A method for calibration of a measuring table of a coordinate measuring machine, comprising the following steps: positioning a mask in a three-point support of the measuring table, wherein the mask used for the calibration of the measuring table is a mask which is used for the production of semiconductors and has a plurality of structures on a surface; measuring positions of a plurality of different structures in an initial orientation of the mask, wherein the structures are distributed on the mask; rotating the mask about an angle and measuring the same plurality of different structures in a rotated orientation of the mask; shifting the mask by any parameter in a X-coordinate direction and a Y-coordinate direction and measuring the same plurality of different structures distributed on the mask in a shifted position of the mask; and determining an overall correction function for eliminating coordinate-dependant measuring errors, wherein the overall correction function has a first correction function and a second correction function, rotating back the measuring parameters of the structures of the mask obtained in the rotated orientation by the first correction function onto the measuring parameters of the structures obtained in the initial orientation and shifting back the measuring parameters of the structures of the mask obtained in the shifted position by the second correction function onto the measuring parameters of the structures obtained in the rotated orientation.