The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2026
Filed:
Jul. 03, 2020
Nikon Slm Solutions Ag, Luebeck, DE;
Axel Engelhardt, Luebeck, DE;
Eduard Gieser, Luebeck, DE;
Markus Mallmann, Pöcking, DE;
Manuel Wiedmann, Greifenberg, DE;
Andreas Hermann, Munich, DE;
Nikon SLM Solutions AG, Luebeck, DE;
RAYLASE GmbH, Weßling, DE;
Abstract
The invention relates to an optical unit for use in an apparatus for producing a three-dimensional workpiece by a beam melting process. The optical unit comprises a beam optics for generating a beam and directing the beam to a predetermined location, and a housing having a housing bottom and an opening provided in the housing bottom which is transparent to the beam so that the beam can pass through the opening. The optical unit has a lower section comprising the housing bottom and having two side walls each extending parallel to a first direction, and an upper section connected to the lower section and having two side walls each extending parallel to the first direction, the lower section and the upper section being arranged offset from each other such that a first side wall of the side walls of the lower section does not extend in the same plane as a first side wall of the side walls of the upper section and a second side wall of the side walls of the lower section does not extend in the same plane as a second side wall of the side walls of the upper section. Furthermore, the invention relates to an apparatus for producing a three-dimensional workpiece.