Method and apparatus for production of high resolution three-dimensional objects by stereolithography

CAFC
  • US 5,345,391 A
  • Filed: 03/31/1992
  • Issued: 09/06/1994
  • Est. Priority Date: 04/18/1988
  • Status: Expired due to Term
First Claim
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1. A system for producing a three-dimensional object on a cross-section by cross-section basis, comprising:

  • means for specifying data descriptive of the object;

    means for specifying at least one variable building parameter for use in controlling the building of object cross-sections wherein said at least one variable building parameter sets the spacing and directional information of data descriptive of an interior portion of at least one object cross-section;

    means for deriving data descriptive of said object cross-sections from said data descriptive of the object including means for deriving data descriptive of the border of said at least one cross-section and then deriving data descriptive of the interior of said at least one object cross-section utilizing said specified at least one variable building parameter and said data descriptive of said border;

    means for providing synergistic stimulation;

    a container for containing at least in part, material capable of selective physical transformation upon exposure to the synergistic stimulation;

    means for successively providing layers of said material;

    means for selectively exposing said layers of said material to said synergistic stimulation in accordance with said data descriptive of said object cross-sections to form successive object cross-sections; and

    control means for obtaining said data descriptive of object cross-sections from said deriving means, and for utilizing said data to control said means for successively providing said layers and said means for selectively exposing said layers, to produce said three-dimensional object.

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