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1. WO2020109209 - DEVICE AND METHOD FOR BEAM SHAPING AND BEAM MODULATION DURING LASER MATERIAL PROCESSING

Publication Number WO/2020/109209
Publication Date 04.06.2020
International Application No. PCT/EP2019/082372
International Filing Date 25.11.2019
IPC
B23K 26/082 2014.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
08Devices involving relative movement between laser beam and workpiece
082Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
G02B 26/10 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
G02B 27/09 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
09Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
B23K 26/064 2014.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
064by means of optical elements, e.g. lenses, mirrors or prisms
CPC
B23K 26/046
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
04Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
046Automatically focusing the laser beam
B23K 26/06
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
B23K 26/064
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
064by means of optical elements, e.g. lenses, mirrors or prisms
B23K 26/0643
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
064by means of optical elements, e.g. lenses, mirrors or prisms
0643comprising mirrors
B23K 26/0648
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
06Shaping the laser beam, e.g. by masks or multi-focusing
064by means of optical elements, e.g. lenses, mirrors or prisms
0648comprising lenses
B23K 26/08
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
26Working by laser beam, e.g. welding, cutting or boring
08Devices involving relative movement between laser beam and workpiece
Applicants
  • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Inventors
  • WETZIG, Andreas
  • MAHRLE, Achim
  • HERWIG, Patrick
  • HAUPTMANN, Jan
  • EBERHARDT, Ramona
  • BÖTTNER, Paul
Agents
  • PFENNING, MEINIG & PARTNER MBB
Priority Data
10 2018 220 336.927.11.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VORRICHTUNG UND VERFAHREN ZUR STRAHLFORMUNG UND STRAHLMODULATION BEI EINER LASERMATERIALBEARBEITUNG
(EN) DEVICE AND METHOD FOR BEAM SHAPING AND BEAM MODULATION DURING LASER MATERIAL PROCESSING
(FR) DISPOSITIF ET PROCÉDÉ DE FORMATION ET DE MODULATION DE FAISCEAU DANS LE TRAITEMENT DE MATÉRIAUX AU LASER
Abstract
(DE)
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zur Strahlformung und Strahlbewegung bei einer Lasermaterialbearbeitung mit einer Laserstrahlquelle (1) zum kontinuierlichen Emittieren eines Laserstrahls (2), einem ersten optischen Umlenkelement (3), einem zweiten optischen Umlenkelement (4) und einem zwischen dem zweiten optischen Umlenkelement (4) und einer zu bearbeitenden Werkstückoberfläche (7) angeordneten optischen Fokussierelement (5). Das zweite optische Umlenkelement (4) ist dazu ausgebildet, einen Auftreffpunkt des Laserstrahls (2) auf der Werkstückoberfläche (7) zu verschieben und das erste optische Umlenkelement (3) ist dazu ausgebildet, eine Lage einer Fokusebene des Laserstrahls (2) relativ zu der Werkstückoberfläche (7) durch eine translatorische Bewegung zu verändern und/oder eine Intensitätsverteilung innerhalb eines Strahlquerschnitts des Laserstrahls zu ändern.
(EN)
The present invention relates to a device and a method for beam shaping and beam movement during laser material processing with a laser beam source (1) for continuously emitting a laser beam (2), a first optical deflection element (3), a second optical deflection element (4), and an optical focusing element (5) arranged between the second optical deflection element (4) and a workpiece surface (7) to be processed. The second optical deflection element (4) is configured to displace a point of incidence of the laser beam (2) on the workpiece surface (7), and the first optical deflection element (3) is configured to alter a position of a focal plane of the laser beam (2) relative to the workpiece surface (7) by means of a translational movement and/or to change an intensity distribution within a beam cross section of the laser beam.
(FR)
L’invention concerne un dispositif et un procédé de mise en forme et de déplacement de faisceau dans le traitement de matériaux au laser, comportant une source de faisceau laser (1) destiné à émettre en continu un faisceau laser (2), un premier élément de déviation optique (3), un deuxième élément de déviation optique (4) et un élément de focalisation optique (5) disposé entre le deuxième élément de déviation optique (4) et une surface de pièce (7) à traiter. Le deuxième élément de déviation optique (4) est conçu pour déplacer un point d’incidence du faisceau laser (2) sur la surface de pièce (7) et le premier élément de déviation optique (3) est conçu pour modifier la position d’un plan focal du faisceau laser (2) par rapport à la surface de pièce (7) par translation et/ou pour modifier la distribution d’intensité dans une section transversale du faisceau laser.
Also published as
Latest bibliographic data on file with the International Bureau