| 摘要 |
Device (10) for producing or repairing a three-dimensional object (36) comprising at least one building zone (12) for successively compacting at least one compactable material (16) layer by layer in predefined regions for building up the three-dimensional object (36) layer by layer or for repairing individual regions of the three-dimensional object (36) layer by layer within the building zone (12); and a laser device (18) for generating at least one laser beam (20, 32, 40) by means of which a material layer (22) can be locally melted and/or sintered to form an object layer. In this case, at least one parabolic mirror (24) or at least one device formed in the manner of a parabolic mirror is arranged within or above the building zone (12), wherein an inner side (42) of the parabolic mirror (24) or of the device formed in the manner of a parabolic mirror is oriented concavely in relation to the material layer (22) and the laser device (18) is arranged between the parabolic mirror (24) or the device formed in the manner of a parabolic mirror and the material layer (22) in such a way that the generated laser beam (20) impinges on the material layer (22) as a result of a beam deflection by means of the parabolic mirror (24). Method for producing or repairing a three-dimensional object (36). |
