EP 4168207 A1 20230426 - MACHINING OPTICAL SYSTEM, LASER MACHINING DEVICE, AND METHOD FOR LASER MACHINING
Title (en)
MACHINING OPTICAL SYSTEM, LASER MACHINING DEVICE, AND METHOD FOR LASER MACHINING
Title (de)
BEARBEITUNGSOPTIK, LASERBEARBEITUNGSVORRICHTUNG UND VERFAHREN ZUR LASERBEARBEITUNG
Title (fr)
SYSTÈME OPTIQUE D'USINAGE, DISPOSITIF D'USINAGE LASER ET PROCÉDÉ D'USINAGE LASER
Publication
Application
Priority
- DE 102020207715 A 20200622
- EP 2021064611 W 20210601
Abstract (en)
[origin: WO2021259597A1] The invention relates to a machining optical system (16) for machining workpieces, comprising: a polariser arrangement (7) which comprises a birefringent polariser element (1a, 1c) for splitting at least one in particular pulsed input laser beam (3) into at least two partial beams (5a, 5b) each having one of two different polarisation states; and a focussing optical system (17) which is located in the beam path downstream of the polariser arrangement (7) and is intended for focussing the partial beams (5a, 5b) onto at least two focal zones, characterised in that the polariser arrangement (7) has at least one further optical element (8, 13) which is located in the beam path downstream of the birefringent polariser element (1a, 1c) and is intended for modifying an angle and/or a distance of at least one of the partial beams (5a, 5b) relative to an optical axis (6) of the machining optical system (16). The invention also relates to a laser machining device (14) which has such a machining optical system (16) and a laser source (11) for generating a laser beam (12), and to a method for laser-machining a workpiece (9) by means of a machining optical system (16).
IPC 8 full level
B23K 26/067 (2006.01); G02B 27/28 (2006.01)
CPC (source: EP KR US)
B23K 26/064 (2013.01 - US); B23K 26/0648 (2013.01 - KR); B23K 26/0673 (2013.01 - US); B23K 26/0676 (2013.01 - EP KR); G02B 26/108 (2013.01 - EP KR); G02B 27/0905 (2013.01 - EP KR); G02B 27/0972 (2013.01 - EP KR); G02B 27/283 (2013.01 - EP KR); G02B 27/30 (2013.01 - KR); G02B 27/30 (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 102020207715 A1 20211223; CN 115835934 A 20230321; EP 4168207 A1 20230426; KR 102706742 B1 20240912; KR 20230020532 A 20230210; US 2023182234 A1 20230615; WO 2021259597 A1 20211230
DOCDB simple family (application)
DE 102020207715 A 20200622; CN 202180044682 A 20210601; EP 2021064611 W 20210601; EP 21730843 A 20210601; KR 20237000729 A 20210601; US 202218067746 A 20221219