The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 2020
Filed:
Mar. 27, 2018
Trumpf Laser Gmbh, Schramberg, DE;
Elke Kaiser, Aichhalden, DE;
Gerhard Broghammer, Boesingen, DE;
TRUMPF LASER GMBH, Schramberg, DE;
Abstract
In a laser machining machine () for laser welding of workpieces, in particular for lap welding of DBC structures, comprising a laser beam generator for generating a laser beam and an optical imaging system for imaging the laser beam into a machining plane, according to the invention, the optical imaging system comprises an optical beam-shaping system, which images the laser beam in the machining plane with an imaging depth (Δd) of at least ±2 mm, preferably of at least ±5 mm, in such a way that the radial power density distribution (P) of the laser beam is bell-shaped along the imaging depth (Δd) in each plane at right angles to the beam axis and the maximum values (P) of these bell-shaped power density distributions (P) along the imaging depth (Δd) vary in relation to one another by less than 10%, preferably by less than 5%.