Methods and apparatus for production of three-dimensional objects by stereolithography
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United States of America Patent
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Mar 12, 1991
Grant Date -
N/A
app pub date -
Apr 18, 1988
filing date -
Apr 18, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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 tailored to provide built-in supports for the object, reduce curl and distortion, and increase resolution, strength, accuracy, speed and economy of reproduction, 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.
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