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:
Dec. 26, 2023
Filed:
Oct. 26, 2022
National Chung Shan Institute of Science and Technology, Taoyuan, TW;
Kuo-Kuang Jen, Taoyuan, TW;
Yi-Cherng Ferng, Taoyuan, TW;
Chia-Hsiang Chang, Taoyuan, TW;
Chun-Hsiang Huang, Taoyuan, TW;
Yuan-Yao Lin, Taoyuan, TW;
Chao-Kuei Lee, Taoyuan, TW;
Yi-Jen Chiu, Taoyuan, TW;
NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY, Taoyuan, TW;
Abstract
A powdered surface monitoring system of additive manufacturing comprises an additive manufacturing processing cavity, having therein a working area carrying powder to be sintered; a laser source, generating a laser beam, which passes through a reflector, a dichroic mirror and a scanning vibration mirror and is transmitted to an upper surface of the powder in the working area; a polarization imaging device, having therein a beam expander group, a polarizer group and at least one photodetector, the polarizer group consisting of a plurality of linear polarizers, and the number of photodetectors being equal to the number of the linear polarizers.