The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2010
Filed:
Apr. 01, 2005
Charles W. Hull, Santa Clarita, CA (US);
Jouni P. Partanen, Santa Monica, CA (US);
Charles R. Sperry, Florence, MA (US);
Patrick Dunne, Limerick, IE;
Suzanne M. Scott, Springfield, VT (US);
Dennis F. Mcnamara, Charlestown, NH (US);
Chris R. Manners, Moorpark, CA (US);
Charles W. Hull, Santa Clarita, CA (US);
Jouni P. Partanen, Santa Monica, CA (US);
Charles R. Sperry, Florence, MA (US);
Patrick Dunne, Limerick, IE;
Suzanne M. Scott, Springfield, VT (US);
Dennis F. McNamara, Charlestown, NH (US);
Chris R. Manners, Moorpark, CA (US);
3D Systems, Inc., Rock Hill, SC (US);
Abstract
A solid imaging apparatus and 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 be 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.