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US 12,214,444 B2Granted
Methods and devices for monitoring a welding process for welding glass workpieces
AssigneeTRUMPF Laser- und Systemtechnik GmbH
InventorsSebastian Hecker, Tim Hesse
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Abstract
The present disclosure relates to methods and devices for monitoring a welding process for welding at least one glass workpiece to another workpiece, the workpieces being welded together in a process zone that is exposed to a processing beam, e.g., to a laser beam, such as an ultra-short-pulse laser beam, wherein radiation emitted by the process zone and originating from at least one of the workpieces is detected in a spatially resolved manner.
Claims13
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.
Dependencies are inferred from the claim text.