Data processing: generic control systems or specific application – Specific application – apparatus or process – Product assembly or manufacturing
Reexamination Certificate
2011-02-22
2011-02-22
Bahta, Kidest (Department: 2123)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Product assembly or manufacturing
C700S117000
Reexamination Certificate
active
07894921
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. bitmap1and bitmap2and 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 (bitmap1; with pixel-specific area elements exposing in white light) and a partial mask (bitmap2; 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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El-Siblani Ali
John Hendrik
Schillen Volker
Bahta Kidest
Envisiontec GmbH
Hansen IP Law PLLC
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