An apparatus for generating a defined laser illumination on a working plane

• Main Authors: TILLKORN, CHRISTOPH, HEIMES, ANDREAS
• Format: Patent
• Language: Chinese; English
• Published: 01.07.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

An apparatus for generating a defined laser illumination (12) on a working plane (14) has a laser light source (20) that generates a laser raw beam (22). An optical arrangement (24) receives the laser raw beam (22) and transforms it along an optical axis (40) into an illumination beam (26). The illumination beam (26) defines a beam direction (28) that intersects the working plane (14). In the region of the working plane (14), the illumination beam (26) has a beam profile (42; 42') that has a long axis (44) with a long axis beam width and a short axis (46) with a short axis beam width both perpendicular to the beam direction (28). The optical arrangement (24) includes a beam transformer (30) having an exit aperture, a first group of optical elements (56, 60, 62, 64) for beam shaping in the long axis, and a second set of optical elements (34, 36, 38) for beam shaping in the short axis. The beam transformer (30) expands the laser raw beam (22) in the long axis in order to produce an expanded laser raw beam. The