National Chung Shan Institute of Science and Technology

Chao-Kuei Lee

Kuo-Kuang Jen

Yi-Jen Chiu

Yuan-Yao Lin

Chun-Hsiang Huang

Chih-Peng Chen

Chung-Chun Huang

Ming-Wei Liu

Yi-Cherng Ferng

Qian-Mao Zhou

Ya-Hsuan Cheng

Chia-Hsiang Chang

Kuo-kuang Jen

Chung-chun Huang

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.

Powdered surface monitoring system of additive manufacturing

An insert coaxial thermal radiation image evaluating system includes a cage support, first lens, first cage movable frame, second cage movable frame, cage holder and light detector. The first cage movable frame is movably disposed at the cage support and connected to the first lens. The second cage movable frame is movably disposed at the cage support and connected to the light detector. The cage holder is connected to the cage support to fix the cage support to an optical substrate. The first cage movable frame is movably disposed in the cage holder. The first lens and a second lens of a metal additive manufacturing system together form a structure of conjugate foci, such that a thermal radiation generated from a high-power infrared laser irradiation zone forms according to a fixed ratio an image captured by the light detector.

Insert coaxial thermal radiation image evaluating system

Growing community of inventors

Taoyuan, Taiwan

Chao-Kuei Lee