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US 12,601,894 B2Granted
Optical arrangement with an f-theta lens
AssigneeTrumpf Laser GmbH
InventorsChristoph Tillkorn, Reiner Bruestle, Tobias Marte, Stefan Dorer, Dominik Keller
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Abstract
An optical arrangement for a laser beam includes an f-theta lens. The f-theta lens is disposed in a divergent beam path of the optical arrangement in order to focus the laser beam into a focus plane. The focus plane is located at a distance from a focal plane of the f-theta lens.
Claims19
An optical arrangement comprising:
- a laser source for producing a laser beam;
- a first lens positioned at a first distance in front of the laser source such that the laser beam is incident on the first lens and emerges from the first lens as a diverging laser beam along a divergent beam path downstream of the first lens;
- and
- an f-theta lens disposed in the divergent beam path of the laser beam downstream of the first lens in order to focus the laser beam into a focus plane, wherein the focus plane is located at a finite distance Δf from a focal plane of the f-theta lens.
1 more element
Dependencies are inferred from the claim text.