公开(公告)号：US11217958B2

公开(公告)日：2022-01-04

申请号：US16176453

申请日：2018-10-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hong-Seok Seo ,  Bongki Mheen ,  Gyu Dong Choi

IPC: H01S3/094 ,  H01S5/10 ,  H01S5/068 ,  H01S5/024 ,  H01S3/10 ,  H01S5/06 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/16 ,  H01S5/12 ,  H01S5/062 ,  H01S3/00 ,  H01S5/02251

Abstract: A semiconductor laser diode light source package includes: a seed light source for outputting signal beams; a pump beam source for outputting pump beams; and at least one mirror for transmitting the signal beams to a core of an output optical fiber and transmitting the pump beams to first cladding of the output optical fiber, wherein the seed light source, the pump beam source, and the at least one mirror are realized in a semiconductor chip, and the output optical fiber is connected to an end terminal of the semiconductor laser diode light source package.

公开(公告)号：US11668801B2

公开(公告)日：2023-06-06

申请号：US16575135

申请日：2019-09-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Bongki Mheen ,  Hong-Seok Seo ,  Gyu Dong Choi

IPC: G01S7/481 ,  G01S7/4863 ,  G01S17/89

CPC classification number: G01S7/4817 ,  G01S7/4863 ,  G01S17/89

Abstract: A LIDAR system is provided. The LIDAR system includes: a light transmitting unit configured to drive a plurality of light emitting elements by light emitting units to irradiate light to different positions of a target object; and a light receiving unit configured to detect light that is reflected at different positions of the target object and then is incident to different light receiving positions through a plurality of light receiving regions.

公开(公告)号：US09733344B2

公开(公告)日：2017-08-15

申请号：US14517119

申请日：2014-10-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Sik Sim ,  Ki Soo Kim ,  Bong Ki Mheen ,  Myoung Sook Oh ,  Hong Seok Seo ,  Jung Ho Song ,  Yong Hwan Kwon ,  Dong Sun Kim ,  Min Hyup Song ,  Gyu Dong Choi

IPC: G01C3/08 ,  G01S7/481 ,  G01S17/06 ,  G01S17/89 ,  G01S17/93 ,  G01S17/42 ,  G01S17/87

CPC classification number: G01S7/4817 ,  G01S17/06 ,  G01S17/42 ,  G01S17/87 ,  G01S17/89 ,  G01S17/936

Abstract: Provided herein a laser radar apparatus including a plurality of light transmission and reception modules arranged concavely in an opposite direction to a scanning direction based on a surface vertical to the scanning direction, wherein each of the plurality of light transmission and reception modules comprises a transmitter configured to deflect a laser beam and to irradiate the deflected laser beam to a target; and a receiver configured to receive the laser beam reflected from the target.

公开(公告)号：US20240200927A1

公开(公告)日：2024-06-20

申请号：US18528198

申请日：2023-12-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Minhyup Song ,  Minje Song ,  Joon Tae Ahn ,  Taehyun Lee ,  Seungyoung Lim ,  Young Jin Jung ,  Gyu Dong Choi

IPC: G01B9/02001

CPC classification number: G01B9/02008 ,  G01B11/02

Abstract: Provided is an optical self-heterodyne detection system. The system includes a light source configured to generate light, a photodetector configured to detect the light, a programmable filter provided between the photodetector and the light source, and an electrical spectrum analyzer connected to the photodetector and configured to analyze a frequency and wavelength of the light using a detection signal of the photodetector. The light source may include a frequency comb light source.

公开(公告)号：US10408924B2

公开(公告)日：2019-09-10

申请号：US15299651

申请日：2016-10-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Bongki Mheen ,  Hong-Seok Seo ,  Min Hyup Song ,  Gyu Dong Choi

IPC: G01S7/481 ,  G01J1/44 ,  G01S7/486 ,  H04B10/60 ,  G01S17/42 ,  G01S17/89

Abstract: There are provided an optical receiver and a laser radar including the same. The optical receiver includes a plurality of optical detecting units configured to convert an optical signal reflected from a target into an electrical signal and to output the electrical signal, a signal combiner configured to combine output signals of the plurality of light detecting regions, a plurality of switches provided between the plurality of optical detecting units and the signal combiner, and a controller configured to control the plurality of switches so that the plurality of optical detecting units are selectively connected to the signal combiner based on whether the optical signal to reflected from the target is input. Therefore, it is possible to make a module small, to improve stability and reliability, and to reduce a signal to noise ratio.

公开(公告)号：US09905987B2

公开(公告)日：2018-02-27

申请号：US15237627

申请日：2016-08-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hong-Seok Seo ,  Bong Ki Mheen ,  Min Hyup Song ,  Gyu Dong Choi

IPC: H01S3/067 ,  H01S3/10 ,  G02B26/10 ,  H01S5/024 ,  H01S3/0941

CPC classification number: G02B26/101 ,  G01S7/4814 ,  G01S7/4818 ,  G01S17/10 ,  G01S17/42 ,  H01S3/06758 ,  H01S3/094007 ,  H01S3/09415 ,  H01S3/10084 ,  H01S5/02415

Abstract: A laser radar system includes a first light source unit including a signal light source—a seed laser diode or a light source for amplifying a laser beam from the seed laser diode—and a pump laser diode, a second light source unit disposed to be spaced apart from the first light source unit, the second light source unit including an optical amplifier for amplifying a signal output from the first light source unit, and an optical connector for connecting the first light source unit and the second light source unit to each other, wherein the second light source unit is disposed at an end of a laser transceiver unit of the laser radar system.