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US5137662: Method and apparatus for production of three-dimensional objects by stereolithography

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Filing Information

Inventor(s) Charles W. Hull · Borzo Modrek · Brent Parker · Raymond S. Freed · Thomas Almquist · Stuart T. Spence · David J. Albert · Dennis R. Smalley · Richard A. Harlow · Phil Stinebaugh · Harry L. Tarnoff · Hop D. Nguyen · Charles W. Lewis · Tom J. Vorgitch · David Z. Remba · Wayne B. Vinson ·
Assignee(s) 3-D Systems, Inc. ·
Attorney/Agent(s) Lyon & Lyon ·
Primary Examiner Leo B. Tentoni ·
Application Number US7697487
Filing date 05/02/1991
Issue date 08/11/1992
Predicted expiration date 08/11/2009
U.S. Classifications 264/22  · 118/620  ·
International Classifications B29C 3508  ·
Kind CodeA
International Classifications 26422;40.1;162;236;255;298;308;347 ·
Related U.S. Application DataThis is a continuation of application Ser. No. 07/269,801, filed on Nov. 8, 1988, now abandoned, which is a continuation-in-part of application Ser. No. 07/182,830, filed on Apr. 18, 1988, now U.S. Pat. No. 5,059,359.
59 Claims, No Drawings


Abstract

An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, information defining the object being specially processed to reduce curl and distortion, and increase resolution, strength, accuracy, speed and economy of reproduction even for rather difficult object shapes, the successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process.

Independent Claims | See all claims (59)

  1. 1. A system for producing a high resolution reproduction of an object cross-section by cross-section out of a material capable of selective physical transformation upon exposure to synergistic stimulation, comprising:at least one computer programmed to form cross-sectional representations from an object descriptive representation, wherein at least some of the cross-sectional representations are comprised of vectors formed from said object descriptive representation at planes corresponding to slicing planes;means for selectively exposing layers of the material in accordance with said cross-sectional representations to form said object cross-section by cross-section.
  2. 29. A process for providing a high-resolution reproduction of an object cross-section by cross-section out of a material capable of selective physical transformation upon exposure to synergistic stimulation, comprising:providing an object descriptive representation;forming cross-sectional representations from said object descriptive representation, wherein at least some of the cross-sectional representations are comprised of vectors formed from the object descriptive representation at planes corresponding to slicing planes; andselectively exposing layers of the material in accordance with said cross-sectional representations to form said object cross-section by cross-section.
  3. 54. A system for producing a high resolution reproduction of an object cross-section by cross-section out of a material capable of selective physical transformation upon exposure to synergistic stimulation, comprising:at least one computer programmed to form cross-sectional representations from an object descriptive representation, wherein at least some of the cross-sectional representations are formed utilizing said object descriptive representation at planes corresponding to slicing planes; andmeans for selectively exposing layers of the material in accordance with said cross-sectional representations to form said object cross-section by cross-section.
  4. 57. A process for producing a high resolution reproduction of an object cross-section by cross-section out of a material capable of selective physical transformation upon exposure to synergistic stimulation, comprising:providing an object descriptive representation;forming cross-sectional representations from said object descriptive representation, wherein at least some of the cross-sectional representation are formed from said object descriptive representation at planes corresponding to slicing planes; andselectively exposing layers of the material in accordance with said cross-sectional representations to form said object cross-section by cross-section.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US2775758 JOHN MUNZ OTTO Munz Dec 1956
US4575330 UVP, Inc. Hull Mar 1986
US4863538 Board of Regents, The University of Texas System Deckard Sep 1989

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP250121Feb 1987

Referenced By

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