Abstract: The present invention relates to a laser processing system comprising a frame structure; a work base for supporting a work material, wherein the work base defines a work field in a work plane, wherein the work plane is parallel to the work base; at least one laser device for projecting work light on the work plane and/or on the work material, when the work material is disposed on the work base, wherein the at least one laser device is attached to the frame structure; wherein each laser device is configured for generating one or more reference marks on the work material and/or on the work plane within the corresponding laser field, wherein the laser field corresponds to at least a part of the work field; an optical detector for scanning the work field for detecting at least a part of the one or more reference marks generated by each laser device, wherein the optical detector is movable with respect to the frame structure with not more than two, preferably not more than one, degree of freedom; and a control uni

Abstract: Arrangement (10) for the powder-bed-based additive manufacturing of a component (100), wherein the arrangement (10) comprises the following: a housing (12), which comprises a building volume (14), wherein the building volume (14) comprises a building area (16); at least three marker devices (20), which are fastened in or on the housing (12), wherein each marker device (20) is suitable for projecting a light reference marking (22) onto a component (100) lying on the building area (16) and/or onto the building area (16); a laser device (30) for the laser processing of a powder bed for generating a component (100) on the building area (16) by means of additive manufacturing, wherein the laser device (30) is set up for the laser processing of an associated working area (32a-32d), wherein the laser device (30) comprises a detection device (34), which is set up to sense the light reference markings (22); and a control unit (40), which is set up to calibrate the laser device (30) on the basis of the light reference

Abstract: The present invention relates to a deflection unit (10) having an optical element (20), which partly reflects a first wavelength and which partly transmits a different, second wavelength. The deflection unit defines an operating beam path traversed by the operating beam (14) from a first window (12) to a second window (24) via a reflection at the optical element (20). The deflection unit comprises an XY-deflection device (22), which is arranged in the operating beam path in order to scan the operating beam that has emerged, a focusing device (16) for focusing the operating beam (14), wherein the focusing device has a variable focal length and is arranged in the operating beam path between the first window (12) and the optical element (20).