Method for producing a three-dimensional object by means of mask exposure
First Claim
1. A method for producing a three-dimensional object, comprising:
- supplying solidification energy to a portion of a solidifiable material corresponding to a cross-section of the three-dimensional object in accordance with a first bitmap mask; and
supplying solidification energy to the portion of the solidifiable material corresponding to the cross-section of the three-dimensional object in accordance with a second bitmap mask, wherein the second bitmap mask is a partial mask within the first bitmap mask.
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Abstract
The invention describes device and method for producing a three-dimensional object by solidifying a solidifiable material under an action of electromagnetic radiation by means of energy input via an imaging unit comprising a predetermined number of discrete imaging elements (pixels). The energy input related to a specific cross-sectional area of the three-dimensional object is controlled by exposure by means of multiple successive raster masks (bitmaps; e.g. bitmap 1 and bitmap 2 and possibly additional ones). The imaging unit is suitably controllable such that at least two masks can be generated, including a first overall mask covering the cross-sectional area (bitmap 1; with pixel-specific area elements exposing in white light) and a partial mask (bitmap 2; in which only a fraction of the area elements are exposed pixel-specifically with white light) within the overall mask. A voxel matrix may be formed. A hardness depth per voxel (volume pixel) can be specifically and precisely influenced in the solidifyable material.
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Citations
7 Claims
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1. A method for producing a three-dimensional object, comprising:
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supplying solidification energy to a portion of a solidifiable material corresponding to a cross-section of the three-dimensional object in accordance with a first bitmap mask; and supplying solidification energy to the portion of the solidifiable material corresponding to the cross-section of the three-dimensional object in accordance with a second bitmap mask, wherein the second bitmap mask is a partial mask within the first bitmap mask. - View Dependent Claims (2, 3)
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4. A method for producing a three-dimensional object, comprising:
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supplying solidification energy to a portion of a solidifiable material corresponding to a cross-section of the three-dimensional object in accordance with a first bitmap mask; supplying solidification energy to the portion of the solidifiable material corresponding to the cross-section of the three-dimensional object in accordance with a second bitmap mask, wherein the cross-section of the three-dimensional object has a first region and a second region, the first bitmap mask defines energy inputs sufficient to solidify the solidifiable material for each of a plurality of discrete imaging elements corresponding to the first region and the second region and the second bitmap defines energy inputs sufficient to solidify the solidifiable material for each of the discrete imaging elements in the plurality of discrete imaging elements corresponding to the second region but not those corresponding to the first region. - View Dependent Claims (5, 6, 7)
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Specification