Patent · US Active

Method for determining the reference focal position of a laser beam

US11065721B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

TRUMPF Werkzeugmaschinen GmbH + Co. KG · DE

Inventors

Markus Blaschka · Schenefeld, DE
Dieter Hallasch · Ditzingen, DE
Markus Zimmermann · Riehen, CH

Key dates

Filing date	Jun 8, 2018
Grant date	Jul 20, 2021
Priority date	—
Expiry date	Feb 12, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01B11/028
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for determining a reference focal position of a laser beam for processing a plate-like member, the method comprising producing at least two incisions in the plate-like member with the laser beam set at different focal positions, irradiating the plate-like member with the laser beam, detecting edges of the incisions by measuring one or more parameters relating to the irradiation of the plate-like member, and establishing a width of the at least two incisions using the detected one or more parameters.

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