EP 4387805 A1 20240626 - DEVICE AND METHOD FOR PROCESSING A WORKPIECE
Title (en)
DEVICE AND METHOD FOR PROCESSING A WORKPIECE
Title (de)
VORRICHTUNG UND VERFAHREN ZUM BEARBEITEN EINES WERKSTÜCKS
Title (fr)
DISPOSITIF ET PROCÉDÉ D'USINAGE D'UNE PIÈCE
Publication
Application
Priority
- DE 102021121469 A 20210818
- EP 2022072470 W 20220810
Abstract (en)
[origin: WO2023020916A1] The present invention relates to a method and a device (1) for processing a workpiece (10) using a laser beam (30) of a laser (3), comprising a laser (3) configured to emit a laser beam (30), a polarization switch (4) configured to switch the polarization of the laser beam (30) between two polarization states and/or rotate the polarization of the laser beam (30), a polarization splitter (5) configured to split the laser beam (30) into two partial laser beams (300), with the two partial laser beams (300) having mutually orthogonal polarizations and with the first partial laser beam (301) with the first polarization having a first offset following the passage through the polarization splitter and the second partial laser beam (302) with a second polarization having a second offset following the passage through the polarization splitter, and a processing optical unit (8) configured to introduce the first partial laser beam (301) into the workpiece (10) into a first focal zone (801) and introduce the second partial laser beam (302) into the workpiece (10) into a second focal zone (802) in order to process the workpiece (10), with the polarization switch (4) being arranged upstream of the polarization splitter (5) in the beam propagation direction and with the switching and/or rotating of the polarization by the polarization switch (4) alternately maximizing the intensities of the two partial laser beams (300).
IPC 8 full level
B23K 26/06 (2014.01); B23K 26/0622 (2014.01); B23K 26/064 (2014.01); B23K 26/067 (2006.01); B23K 26/244 (2014.01); G02B 27/28 (2006.01)
CPC (source: EP KR US)
B23K 26/0624 (2015.10 - EP KR US); B23K 26/0626 (2013.01 - EP KR); B23K 26/064 (2013.01 - EP KR); B23K 26/067 (2013.01 - EP KR US); B23K 26/24 (2013.01 - US); B23K 26/244 (2015.10 - EP KR); G02B 27/283 (2013.01 - KR); G02B 27/286 (2013.01 - KR); G02B 27/283 (2013.01 - EP); G02B 27/286 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021121469 A1 20230223; CN 118043161 A 20240514; EP 4387805 A1 20240626; KR 20240042128 A 20240401; US 2024181563 A1 20240606; WO 2023020916 A1 20230223
DOCDB simple family (application)
DE 102021121469 A 20210818; CN 202280062884 A 20220810; EP 2022072470 W 20220810; EP 22765438 A 20220810; KR 20247008729 A 20220810; US 202418439786 A 20240213