Focusing a laser beam
AssigneeTrumpf Laser GmbH
InventorsReiner Bruestle, Andreas Voss, Martin Huonker
Life of this patent
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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.
Claims9
A scanner processing head for processing a three-dimensional workpiece, the scanner processing head comprising:
- a device for focusing a laser beam, the device comprising:
- a first telescopic configuration including a collimating optical element that collimates a laser beam, and a downstream focusing optical element that focuses the laser beam on a focal point;
- and
- a second telescopic configuration including a first lens and a downstream second lens moveable relative to each other, the second telescopic configuration being disposed in a divergent beam path upstream of the first telescoping configuration;
- and
- two scanner mirrors operable to adjust a position of the focal point in a first and second spatial direction;
- wherein the device is operable to adjust a position of the focal point in a third spatial direction.
Dependencies are inferred from the claim text.