Patent · US Active

Device and method for beam shaping and beam modulation during laser material processing

US12151306B2 · kind B2 · utility

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12Claims

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Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Andreas Wetzig · Dresden, DE
Achim Mahrle · Dresden, DE
Patrick Herwig · Dresden, DE
Jan Hauptmann · Dresden, DE
Ramona Eberhardt · Jena, DE
Paul Boettner · Jena, DE

Key dates

Filing date	Nov 25, 2019
Grant date	Nov 26, 2024
Priority date	—
Expiry date	Jan 10, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/0983
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A device and a method for beam shaping and beam movement during laser material processing with a laser beam source (1) for continuously emitting a laser beam (2), a first optical deflection element (3), a second optical deflection element (4), and an optical focusing element (5) arranged between the second optical deflection element (4) and a workpiece surface (7) to be processed. The second optical deflection element (4) is configured to displace a point of incidence of the laser beam (2) on the workpiece surface (7), and the first optical deflection element (3) is configured to alter a position of a focal plane of the laser beam (2) relative to the workpiece surface (7) by means of a translational movement and/or to change an intensity distribution within a beam cross section of the laser beam.

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