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AssigneeTRUMPF Laser- und Systemtechnik GmbH
InventorsDaniel Flamm, Jonas Kleiner
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A method for processing a workpiece using a pulsed laser beam includes beam shaping of the laser beam to form an elongated focus zone in the material of the workpiece. The beam shaping is carried out by using an arrangement of diffractive, reflective and/or refractive optical assemblies. The beam shaping includes focus-forming beam shaping to cause beam portions to enter at an entry angle to a beam axis of the laser beam for forming the elongated focus zone along the beam axis in the workpiece by way of interference, and phase-correcting beam shaping to counteract any influence of the interference by entrance of the laser beam into the workpiece. The method further includes setting beam parameters of the laser beam so that the material of the workpiece is modified in the elongated focus zone.
A method for processing a workpiece using a pulsed laser beam, wherein the workpiece comprises a material and has a curved surface, the method comprising the following steps:
An optical system for beam shaping of a pulsed laser beam for forming a focus zone in a workpiece having a curved surface, wherein the focus zone is elongated along a beam axis of the laser beam, the optical system comprising:
Dependencies are inferred from the claim text.