Patent ID: 8982339
Filing Date: 2015-03-17
Classification: B23K,G01B,G01N

Abstract:
1. A material-working device with working beams of a beam generator and with in-situ measurement of a working distance between the beam generator and a workpiece, the material-working device comprising: a working laser; a laser scanner for the working laser, the laser scanner including a two-dimensional deflecting device with scanner mirrors and a variable refocusing device for varying working distances; an objective lens; and a sensor device including a spectrometer, at least two sensor light sources generating measuring beams, and an optical coupling element, wherein the measuring beams are linearly polarized in crossed polarization directions and collimated using the optical coupling element, and then directed to the workpiece through the laser scanner and the objective lens, and then directed back to the spectrometer to record the workpiece distance.