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Method for creating three-dimensional objects by cross-sectional lithography

  • US 6,391,245 B1
  • Filed: 04/13/1999
  • Issued: 05/21/2002
  • Est. Priority Date: 04/13/1999
  • Status: Active Grant
First Claim
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1. A method of generating a three-dimensional object out of a medium capable of selective solidification upon exposure to synergistic stimulation, comprising the steps of:

  • providing at least one spatial light modulator array having a plurality of individually controlled pixel elements;

    providing a source of said synergistic stimulation;

    directing said synergistic stimulation upon said spatial light modulator array(s);

    selectively activating a plurality of said pixel elements wherein said activated pixels reflect said synergistic stimulation onto corresponding surface portions of said medium;

    maintaining said synergistic stimulation directed at said surface until the surface portions of said medium exposed to said synergistic stimulation solidify to form at least a partial lamina layer;

    lowering said lamina layer into said medium by a first distance;

    raising said lamina layer by a second distance, wherein the second distance is less than the first distance to form a next surface portion to be exposed; and

    repeating the maintaining, lowering and raising steps until the maintaining step forms a final lamina layer, such that adjacent lamina layers are bonded with each other.

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