Patent · US Expired

Focusing a laser beam

US7339750B2 · kind B2 · utility

2Cited by

4References

13Claims

0Family size

Assignee

TRUMPF Laser GmbH + Co. KG · DE

Inventors

Reiner Brüstle · Lauterbach, DE
Andreas Voss · Essen, DE
Martin Huonker · Rottweil, DE

Key dates

Filing date	Sep 29, 2005
Grant date	Mar 4, 2008
Priority date	—
Expiry date	Nov 24, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/0095
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A device for focusing a laser beam includes a first telescopic configuration and a second telescopic configuration. The first telescopic configuration includes a collimating optical element for collimating the laser beam and a downstream focusing optical element for focusing the laser beam onto a focal point. The second telescopic configuration includes a first lens and a downstream second lens disposed in the divergent beam path upstream of the first telescopic configuration. The first and second lenses of the second telescopic configuration are moveable relative to each other in the beam direction.

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