Patent · US Active

Focusing a laser beam

US7474448B2 · kind B2 · utility

1Cited by

7References

9Claims

0Family size

Assignee

TRUMPF Laser GmbH + Co. KG · DE

Inventors

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

Key dates

Filing date	Feb 8, 2008
Grant date	Jan 6, 2009
Priority date	—
Expiry date	Feb 8, 2028

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.