Method for scanning field correction at least of a laser scanner device, laser scanner device, scatter pattern element, scatter pattern holding device and scanning field correction system

A method for a scanning field correction of at least one laser scanner device (300), wherein the method has the following steps:

• providing a scatter pattern element (30) on a processing plane (11),
• wherein the scatter pattern element (30) has at least one scatter region (31), which is arranged in a scatter pattern (M);
• passing over or scanning, respectively, at least a part of the scatter pattern element (30) on the processing plane (11) by means of a laser beam (12) of the at least one laser scanner device (300) along scanner coordinates (x, y, z),
• wherein the laser beam passes through at least one window (20), preferably protective glass, between a deflection unit (10) and the processing plane (11);
• detecting scatter radiation (13), which can be generated by scattering and/or reflection of the laser beam (12) when passing over or scanning, respectively, the at least one scatter region (31);
• creating a contour diagram (K) by a correlation of the detected scatter radiation (13) with the scanner coordinates (x, y, z);
• comparing the contour diagram (K) with a reference image of the scatter pattern (M) and determining a deviation of the contour diagram (K) from the reference image of the scatter pattern (M);
• calculating a calibration function for a calibrated control of the deflection unit (10) on the basis of the determined deviation, whereby
• the contour diagram (K) comprises a scatter pattern image (M′), which corresponds to a distorted illustration of the scatter pattern (M) of the scatter pattern element (30) in such a way that the contour diagram (K) has at least one scatter region image (31′), which can be assigned to the at least one scatter region (31) of the scatter pattern element (30), in particular can be assigned unambiguously.