Patent ID: 6261507
Filing Date: 2001-07-17
Classification: B29C,B33Y,B44B,G01J,G03F,G05B,G06T

Abstract:
A method of constructing a three-dimensional object, comprising:a. forming a layer of a solidifiable medium adjacent to any previously formed cross-section of the three-dimensional object in preparation for forming a successive cross-section of the three-dimensional object;b. selectively exposing the layer of medium to prescribed stimulation to form the successive cross-section of the three-dimensional object; andc. repeating (a) and (b) a plurality of times to construct the three-dimensional object from a plurality of adhered cross-sections,wherein (a) further comprises forming at least a first portion of a first cross-section with a first pattern comprising a plurality of lines of exposure and forming at least a second portion of a second cross-section with a second pattern comprising a plurality of lines of exposure, the second pattern being different from the first pattern, andwherein at least some of the lines of the first pattern expose the medium in a tighter configuration near a boundary of the first cross-section and a looser configuration further away from the boundary of the first cross-section.