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:
Aug. 15, 2023
Filed:
May. 27, 2021
Nexa3d Inc., Ventura, CA (US);
Tomasz P. Cieszyński, Sosnowiec, PL;
Jakub Graczyk, Cracow, PL;
Avi N. Reichental, Carpinteria, CA (US);
Abstract
Methods and apparatus for forming a three-dimensional article in which a powdered medium is distributed in a powder bed, heated to a temperature below its melting point, and fused by means of a laser beam projected in the form of an image of a cross section of the three-dimensional article. The image of the cross-sectional layer is created by spatial light modulation of the laser beam using an LCoS display. During the fabrication process, characteristics of the image of the cross-sectional layer are controlled through monitoring of the projection of a holographic representation of the image using one or more imaging devices.