EP 4076828 A1 20221026 - METHOD FOR LASER MATERIAL MACHINING AND LASER-MACHINING INSTALLATION
Title (en)
METHOD FOR LASER MATERIAL MACHINING AND LASER-MACHINING INSTALLATION
Title (de)
VERFAHREN ZUR LASERMATERIALBEARBEITUNG UND LASERBEARBEITUNGSANLAGE
Title (fr)
PROCÉDÉ D'USINAGE LASER DE MATIÈRE ET INSTALLATION D'USINAGE LASER
Publication
Application
Priority
- DE 102019135283 A 20191219
- EP 2020086643 W 20201217
Abstract (en)
[origin: WO2021122894A1] A method for laser material machining of at least partially transparent material (109) by sequentially modifying adjoining portions (125A, 125B) of the material (109) with pulsed laser beams comprises the steps of: working the material (109) with a first pulsed laser beam (103) for producing first modifications (119, 143), wherein the first modifications (119, 143) form a shielding surface (115), generating a second pulsed laser beam (103'), which when radiated into the material (109) forms a focusing zone (107'), which is formed by constructive interference of laser radiation that runs at an angle in the direction of the second focusing-zone axis (113'), and working the material (109) with the second pulsed laser beam (103') by the focusing zone (107') being moved in relation to the material (109) for producing second modifications (119') in a second portion (125B) of the material (109), wherein at least part of the laser radiation running at an angle in the direction of the second focusing-zone axis (113') impinges on the shielding surface (115). The shielding surface (115) can interfere with, and in particular suppress, the constructive interference of part of the laser radiation of the second pulsed laser beam that impinges on the shielding surface (115) with part of the laser radiation of the second pulsed laser beam (103') that does not impinge on the shielding surface (115).
IPC 8 full level
B23K 26/0622 (2014.01); B23K 26/06 (2014.01); B23K 26/073 (2006.01); B23K 26/38 (2014.01); B23K 26/50 (2014.01); B23K 26/53 (2014.01); B23K 103/00 (2006.01)
CPC (source: EP KR US)
B23K 26/0006 (2013.01 - US); B23K 26/042 (2015.10 - US); B23K 26/046 (2013.01 - US); B23K 26/0604 (2013.01 - US); B23K 26/0624 (2015.10 - EP KR); B23K 26/0626 (2013.01 - EP KR); B23K 26/0648 (2013.01 - EP KR); B23K 26/0652 (2013.01 - EP KR); B23K 26/0738 (2013.01 - EP KR); B23K 26/38 (2013.01 - EP KR US); B23K 26/50 (2015.10 - EP); B23K 26/53 (2015.10 - EP KR); B23K 2103/54 (2018.07 - EP KR)
Citation (search report)
See references of WO 2021122894A1
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 102019135283 A1 20210624; CN 114829054 A 20220729; EP 4076828 A1 20221026; KR 20220110566 A 20220808; US 2022297229 A1 20220922; WO 2021122894 A1 20210624
DOCDB simple family (application)
DE 102019135283 A 20191219; CN 202080088150 A 20201217; EP 2020086643 W 20201217; EP 20829773 A 20201217; KR 20227023830 A 20201217; US 202217835994 A 20220609