CPC B23K 26/0648 (2013.01) [B23K 26/36 (2013.01)] | 14 Claims |
1. 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.
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