US 12,214,444 B2
Methods and devices for monitoring a welding process for welding glass workpieces
Sebastian Hecker, Aichhalden (DE); and Tim Hesse, Ditzingen (DE)
Assigned to TRUMPF Laser- und Systemtechnik GmbH, Ditzingen (DE)
Filed by TRUMPF Laser-und Systemtechnik GmbH, Ditzingen (DE)
Filed on May 12, 2021, as Appl. No. 17/318,263.
Application 17/318,263 is a continuation of application No. PCT/EP2019/081049, filed on Nov. 12, 2019.
Claims priority of application No. 102018128368.7 (DE), filed on Nov. 13, 2018.
Prior Publication US 2021/0260700 A1, Aug. 26, 2021
Int. Cl. B23K 26/324 (2014.01); B23K 26/03 (2006.01); B23K 26/0622 (2014.01); B23K 26/244 (2014.01); B23K 26/26 (2014.01); B23K 26/57 (2014.01); B23K 31/12 (2006.01); B23K 101/18 (2006.01); B23K 103/00 (2006.01); C03B 23/203 (2006.01); G06T 7/00 (2017.01); G06T 7/73 (2017.01)
CPC B23K 26/324 (2013.01) [B23K 26/032 (2013.01); B23K 26/0624 (2015.10); B23K 26/244 (2015.10); B23K 26/26 (2013.01); B23K 26/57 (2015.10); B23K 31/125 (2013.01); C03B 23/203 (2013.01); G06T 7/001 (2013.01); G06T 7/73 (2017.01); B23K 26/03 (2013.01); B23K 2101/18 (2018.08); B23K 2103/54 (2018.08); G06T 2207/30164 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for monitoring a welding process for welding at least one glass workpiece to a further workpiece, the method comprising
welding the workpieces together in a process zone that is exposed to a processing beam guided to the process zone through the at least one glass workpiece, which is transparent to the processing beam; and
detecting radiation emitted by the process zone and originating from at least one of the workpieces in a spatially resolved manner, wherein the emitted radiation comprises laser processing beam energy reflected or scattered from any one or more of cracks, imperfections, or defects within the at least one glass workpiece.