公开(公告)号：US20210356326A1

公开(公告)日：2021-11-18

申请号：US17184624

申请日：2021-02-25

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： YUAN-YAO LIN ,  CHAO-KUEI LEE ,  YI-JEN CHIU ,  CHUNG-CHUN HUANG ,  QIAN-MAO ZHOU ,  YA-HSUAN CHENG ,  MING-WEI LIU ,  KUO-KUANG JEN ,  CHIH-PENG CHEN

IPC: G01J5/08 ,  G01J5/10

Abstract: 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.

公开(公告)号：US20230302735A1

公开(公告)日：2023-09-28

申请号：US17973552

申请日：2022-10-26

Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： KUO-KUANG JEN ,  YI-CHERNG FERNG ,  CHIA-HSIANG CHANG ,  CHUN-HSIANG HUANG ,  YUAN-YAO LIN ,  CHAO-KUEI LEE ,  YI-JEN CHIU

IPC: B29C64/386 ,  B29C64/153 ,  B29C64/268 ,  B29C64/286

CPC classification number: B29C64/386 ,  B29C64/153 ,  B29C64/268 ,  B29C64/286 ,  B33Y30/00

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.