公开(公告)号：AT540334T

公开(公告)日：2012-01-15

申请号：AT09174454

申请日：2006-03-20

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES ,  PARTANEN JOUNI ,  SPERRY CHARLES ,  DUNNE PATRICK ,  SCOTT SUZANNE ,  MCNAMARA DENNIS ,  MANNERS CHRIS

IPC: G03F7/00 ,  B29C67/00 ,  G03F7/20

Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.