Patent · US Active

Method and device for detecting a focal position of a laser beam

US11530946B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

Precitec GmbH & Co. KG · DE

Inventors

David Blázquez-Sánchez · Gaggenau, DE
Niklas Weckenmann · Rastatt, DE
Florian Opitz · Offenburg, DE
Georg Spörl · Rheinstetten, DE

Key dates

Filing date	Dec 11, 2018
Grant date	Dec 20, 2022
Priority date	—
Expiry date	Jun 6, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG02B7/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method and a device for detecting a focal position of a laser beam, particularly a machining laser beam in a laser machining head, includes an optical element which is arranged in the laser beam converging toward the focal point and which is designed to outcouple a reflection from the laser beam path, and a sensor arrangement which is designed to detect beam characteristics of said laser beam in the region of the focal point in the laser extension direction, and which measures the outcoupled reflection of the laser beam at at least two locations that are offset to one another in the extension direction, in order to determine the current focal position.

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