METHOD FOR PRODUCING A THREE-DIMENSIONAL OBJECT WITH RESOLUTION ENHANCEMENT BY MEANS OF PIXEL SHIFT

摘要

Production of three-dimensional objects (3) by curing layers of polymer (4) using irradiation (8) through a mask produced by an imaging unit with fixed resolution comprises improving resolution by dividing the inner and outer contours of the object into sub-pixels using multiple exposure. This consists of several images which are offset from each other by distances in the sub-pixel range. A separate mask/bitmap is generated for each offset image. An independent claim is included for apparatus for carrying out the method with one or more projectors (1) and optionally additional optics (2) to produce the offset images and their masks.