Patent ID: 8703037
Filing Date: 2014-04-22
Classification: B29C,B33Y

Abstract:
1. A method for forming a three-dimensional object layer-by-layer from a photocurable solidifiable liquid medium, the method comprising: projecting an image representative of cross-sectional image data from a radiation source to selectively illuminate pixels in an image plane in a first exposure to selectively solidify a layer of photocurable solidifiable liquid medium; shifting the image by a subpixel amount to a new image position by rotating a transparent plate positioned between the radiation source and the image plane through an angle in one of an X- or Y-plane to shift the image; adjusting the image to match the new image position to define adjusted image; and projecting the adjusted image to selectively illuminate pixels it the image plane in a second exposure to selectively solidify the same layer of photocurable solidifiable liquid medium.