Optical unit for laser machining of a workpiece and laser machining device
AssigneeBystronic Laser AG
InventorsSimon Scheidiger, Martin Mumenthaler, Andreas Luedi
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Abstract
An optical unit fora laser beam for laser machining of a workpiece is disclosed. With particular application to a laser beam, the optical unit may be applied to a high-power laser beam and comprise an optical element for the optical imaging of the laser beam, and two protective glasses that are transparent for the laser beam, the outer edges of which protective glasses being enclosed in an airtight manner by a holder in such a way that they form an interior space with the holder, the optical element also being arranged in the interior space. A laser machining device is also disclosed.
Claims14
An optical unit for at least one of a laser beam and a high-power laser beam for laser machining of a workpiece, the optical unit comprising:
- an optical element configured to optically image the laser beam, and
- two protective glasses transparent to the laser beam, the two protective glasses comprising outer edges of which protective glasses are enclosed in an airtight manner by a holder such that with the holder they form an interior space, and
- wherein the optical element is arranged in the interior space;
- wherein the optical element comprises or is formed from at least one material selected from quartz glass and calcium fluoride;
- and
- wherein the protective glasses comprises or are formed from at least one material selected from sapphire and zinc sulfide.
A laser machining device, in particular laser machining head, comprising an interface for a laser source for generating a laser beam;
- and an optical unit for at least one of a laser beam and a high-power laser beam for laser machining of a workpiece, comprising an optical element for the optical imaging of the laser beam, and two protective glasses that are transparent for the laser beam, the outer edges of which protective glasses are enclosed in an airtight manner by a holder in such a way that with the holder they form an interior space, wherein the optical element is arranged in the interior space;
- wherein the optical element contains or is formed from at least one material selected from quartz glass and calcium fluoride;
- and the protective glasses contain or are formed from at least one material selected from sapphire and zinc sulfide, wherein the optical unit is arranged in the beam path of the laser beam.
Dependencies are inferred from the claim text.