Patent · US Active

Apparatus and method for laser machining a workpiece

US12053838B2 · kind B2 · utility

0Cited by

8References

18Claims

0Family size

Assignee

TRUMPF LASER- UND SYSTEMTECHNIK GMBH · DE

Inventors

Daniel Flamm · Walnut Creek, US
Michael Jenne · Ditzingen, DE
Henning Heiming · Reken, DE

Key dates

Filing date	Jul 24, 2023
Grant date	Aug 6, 2024
Priority date	—
Expiry date	Jul 24, 2043

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K2103/54
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An apparatus for laser machining a workpiece includes a beam shaping device for forming a focal zone from an input laser beam incident on the beam shaping device, and a telescope device for imaging the focal zone into a material of the workpiece. The beam shaping device is configured to impose a phase on a beam cross section of the input laser beam in such a way that the focal zone extends along a longitudinal centre axis which is curved at least in certain portions. The telescope device is assigned a beam splitting device for splitting an output laser beam output coupled from the beam shaping device into a plurality of polarized partial beams, each of which has one of at least two different polarization states. The focal zone has an asymmetrical cross section in a plane oriented perpendicular to the longitudinal centre axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.