Method and apparatus for producing a three-dimensional object
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United States of America Patent
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Jul 16, 1996
Grant Date -
N/A
app pub date -
Sep 20, 1994
filing date -
Jan 28, 1993
priority date (Note) -
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Abstract
A method for producing an object by layerwise solidification of the object by means of electromagnetic radiation is expedited by simultaneously solidifying the material of a layer at a plurality of places. An apparatus for carrying out the method comprises an irradiation device (11, 12, 14, 15, 16) generating a plurality of beams (20, 21, 22) as well as a control device (7, 17, 18, 19) directing each of the plurality of beams independently to different regions of the layer (8a . . . 8d).
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