公开(公告)号：US10447008B2

公开(公告)日：2019-10-15

申请号：US16156147

申请日：2018-10-10

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yu-Cheng Song ,  Chih-Chun Chen ,  Fu-Shun Ho ,  Chien-Hung Lu

IPC: H01S5/042 ,  H01S5/0687 ,  H01S5/068

Abstract: A laser driver device is provided, which includes a control circuit, a driver circuit and a feedback circuit. The control circuit receives setup data and convert the setup data into a setup signal. The driver circuit receives the setup signal and generates a drive current according to the setup signal to drive a laser light source. The feedback circuit receives the setup data and the feedback signal of the laser light source and compares the setup data with the feedback signal to generate an adjust signal. The driver circuit receives the adjust signal and adjusts the drive current according to the adjust signal.

公开(公告)号：US11940658B2

公开(公告)日：2024-03-26

申请号：US17558656

申请日：2021-12-22

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Hsin-Chia Su ,  Ying-Hui Yang ,  Yu-Cheng Song ,  Tsung-Jun Ho

IPC: G02B6/42 ,  G01J1/04

CPC classification number: G02B6/4206 ,  G01J1/0425

Abstract: An optical fiber module is provided and includes an optical fiber structure, a light-absorbing area and a photoelectric sensor in a housing. The optical fiber structure collectively arranges a plurality of first optical fibers to form at least one optical fiber bundle with a tapered end, and a second optical fiber is connected to the tapered end of the optical fiber bundle to converge the optical fiber bundle to the second optical fiber. The light-absorbing area corresponds to an end of the second optical fiber, such that the light-absorbing area absorbs scattering signals escaped and scattered when signals are transmitted from the plurality of first optical fibers to the second optical fiber. The photoelectric sensor is arranged corresponding to the plurality of first optical fibers to receive target signals escaped and refracted when the signals are transmitted from the second optical fiber to the plurality of first optical fibers.

公开(公告)号：US11283232B2

公开(公告)日：2022-03-22

申请号：US16727202

申请日：2019-12-26

Applicant: Industrial Technology Research Institute

Inventor： Chih-Chun Chen ,  Fu-Shun Ho ,  Chun-Chieh Yang ,  Yu-Cheng Song

IPC: H01S3/13 ,  G01J1/42 ,  G01J1/04 ,  G02B5/02 ,  G01J1/44 ,  G01J1/02

Abstract: A laser protection system includes a high-power laser source, an optical diffuser, a photo detector, a signal-processing device, and a control module. The high-power laser source generates a first laser light beam, and the optical diffuser attenuates a laser power of the first laser light beam to form a second laser light beam. The photo detector obtains an optical detection signal from the second laser light beam. The signal-processing device includes a signal conversion module, a processor, and an encoder. The signal conversion module transforms the optical detection signal into a measurement data eigenvalue. The encoder encodes the measurement data eigenvalue into a measured encoded data, and the setting data eigenvalue into a set encoded data. The control module evaluates the set encoded data and the measured encoded data to determine whether or not the high-power laser source needs to be stopped.

公开(公告)号：US11942750B2

公开(公告)日：2024-03-26

申请号：US17101081

申请日：2020-11-23

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yi-Chi Lee ,  Hsin-Chia Su ,  Shih-Ting Lin ,  Yu-Cheng Song ,  Fu-Shun Ho ,  Chih-Chun Chen

IPC: H01S3/00 ,  G02B6/293 ,  H01S3/067 ,  H01S3/16

CPC classification number: H01S3/0014 ,  G02B6/29389 ,  H01S3/06708 ,  H01S3/1608

Abstract: A laser inspection system is provided. A laser source emits a laser with a first spectrum and the laser is transmitted by a first optical fiber. A gain optical fiber doped with special ions is connected to the first optical fiber, and a light detector is provided around the gain optical fiber. When the laser with the first spectrum passes through the gain optical fiber, the gain optical fiber absorbs part of the energy level of the laser with the first spectrum, so that the laser with the first spectrum is converted to generate light with a second spectrum based on the frequency conversion phenomenon. The light detector detects the intensity of the light with the second spectrum, so that the power of the laser source can be obtained.

公开(公告)号：US20230136582A1

公开(公告)日：2023-05-04

申请号：US17558656

申请日：2021-12-22

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Hsin-Chia Su ,  Ying-Hui Yang ,  Yu-Cheng Song ,  Tsung-Jun Ho

IPC: G02B6/42 ,  G01J1/04

Abstract: An optical fiber module is provided and includes an optical fiber structure, a light-absorbing area and a photoelectric sensor in a housing. The optical fiber structure collectively arranges a plurality of first optical fibers to form at least one optical fiber bundle with a tapered end, and a second optical fiber is connected to the tapered end of the optical fiber bundle to converge the optical fiber bundle to the second optical fiber. The light-absorbing area corresponds to an end of the second optical fiber, such that the light-absorbing area absorbs scattering signals escaped and scattered when signals are transmitted from the plurality of first optical fibers to the second optical fiber. The photoelectric sensor is arranged corresponding to the plurality of first optical fibers to receive target signals escaped and refracted when the signals are transmitted from the second optical fiber to the plurality of first optical fibers.

公开(公告)号：US20220131326A1

公开(公告)日：2022-04-28

申请号：US17101081

申请日：2020-11-23

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yi-Chi Lee ,  Hsin-Chia Su ,  Shih-Ting Lin ,  Yu-Cheng Song ,  Fu-Shun Ho ,  Chih-Chun Chen

IPC: H01S3/00 ,  H01S3/067 ,  H01S3/16 ,  G02B6/293

Abstract: A laser inspection system is provided. A laser source emits a laser with a first spectrum and the laser is transmitted by a first optical fiber. A gain optical fiber doped with special ions is connected to the first optical fiber, and a light detector is provided around the gain optical fiber. When the laser with the first spectrum passes through the gain optical fiber, the gain optical fiber absorbs part of the energy level of the laser with the first spectrum, so that the laser with the first spectrum is converted to generate light with a second spectrum based on the frequency conversion phenomenon. The light detector detects the intensity of the light with the second spectrum, so that the power of the laser source can be obtained.