Patents by Inventor Nam-Hyun KWON

Nam-Hyun KWON has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • OPTICAL PHASED ARRAY RADIATOR
    Publication number: 20240027868
    Abstract: An optical phased array (OPA) radiator includes a plurality of unit radiators configured to serve as optical waveguides, each of the unit radiators being made of a silicon material and each having a predetermined length, where the unit radiators are disposed in parallel; a cladding portion configured to cover the plurality of unit radiators; and a plurality of electrodes arranged in parallel with the plurality of unit radiators on the cladding portion, where the plurality of electrodes are arranged so as not to overlap the plurality of unit radiators in a vertical direction. A beam radiated through the unit radiators using a phased array can be efficiently vertically steered.
    Type: Application
    Filed: September 27, 2023
    Publication date: January 25, 2024
    Inventors: Chan-Hee Kang, Hyun-Woo Rhee, Hyeon-Ho Yoon, Nam-Hyun Kwon, Hyo-Hoon Park, Geum-Bong Kang
  • Optical phased array chip using MEMS switch and manufacturing method thereof
    Patent number: 11640030
    Abstract: Disclosed are an optical phased array chip and a method of manufacturing the same. The optical phased array chip includes a plurality of optical switches and a plurality of optical phased arrays implemented on a single integrated circuit, wherein the single integrated circuit includes a silicon substrate, a lower layer formed on an upper portion of the silicon substrate, a silicon layer formed on an upper portion of the lower layer, a first upper layer, a second upper layer and a third upper layer sequentially arranged on the silicon layer, and an electrode that penetrates through the first upper layer while being grounded to the silicon layer and is formed on an upper portion of the first upper layer.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: May 2, 2023
    Assignees: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyo-Hoon Park, Jong-Bum You, Dong-Eun Yoo, Ju-Beom Lee, In Ki Kim, Tae Joon Seok, Geumbong Kang, Hyeonho Yoon, Nam-Hyun Kwon
  • Silicon-opa-based lidar for measuring distance using quasi-frequency modulation
    Patent number: 11609330
    Abstract: A silicon phased array based LiDAR device that measures a distance using a quasi-frequency modulation is disclosed.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: March 21, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyo-Hoon Park, Hyeonho Yoon, Nam-Hyun Kwon, Kyeongjin Han, Hyun-Woo Rhee, Geum-Bong Kang
  • OPTICAL PHASED ARRAY RADIATOR
    Publication number: 20220244615
    Abstract: An optical phased array (OPA) radiator includes a plurality of unit radiators configured to serve as optical waveguides, each of the unit radiators being made of a silicon material and each having a predetermined length, where the unit radiators are disposed in parallel; a cladding portion configured to cover the plurality of unit radiators; and a plurality of electrodes arranged in parallel with the plurality of unit radiators on the cladding portion, where the plurality of electrodes are arranged so as not to overlap the plurality of unit radiators in a vertical direction. A beam radiated through the unit radiators using a phased array can be efficiently vertically steered.
    Type: Application
    Filed: November 17, 2021
    Publication date: August 4, 2022
    Inventors: Chan-Hee Kang, Hyun-Woo Rhee, Hyeon-Ho Yoon, Nam-Hyun Kwon, Hyo-Hoon Park, Geum-Bong Kang
  • OPTICAL PHASED ARRAY CHIP USING MEMS SWITCH AND MANUFACTURING METHOD THEREOF
    Publication number: 20220229233
    Abstract: Disclosed are an optical phased array chip and a method of manufacturing the same. The optical phased array chip includes a plurality of optical switches and a plurality of optical phased arrays implemented on a single integrated circuit, wherein the single integrated circuit includes a silicon substrate, a lower layer formed on an upper portion of the silicon substrate, a silicon layer formed on an upper portion of the lower layer, a first upper layer, a second upper layer and a third upper layer sequentially arranged on the silicon layer, and an electrode that penetrates through the first upper layer while being grounded to the silicon layer and is formed on an upper portion of the first upper layer.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 21, 2022
    Applicants: Korea Advanced Institute of Science and Technology, Gwangju Institute of Science and Technology
    Inventors: Hyo-Hoon Park, Jong-Bum You, Dong-Eun Yoo, Ju-Beom Lee, In Ki Kim, Tae Joon Seok, Geumbong Kang, Hyeonho Yoon, Nam-Hyun Kwon
  • SILICON-OPA-BASED LIDAR FOR MEASURING DISTANCE USING QUASI-FREQUENCY MODULATION
    Publication number: 20210302577
    Abstract: A silicon phased array based LiDAR device that measures a distance using a quasi-frequency modulation is disclosed.
    Type: Application
    Filed: April 3, 2020
    Publication date: September 30, 2021
    Inventors: Hyo-Hoon PARK, Hyeonho YOON, Nam-Hyun KWON, Kyeongjin HAN, Hyun-Woo RHEE, Geum-Bong KANG
  • LIDAR FOR MEASURING DISTANCE USING SELF-HETERODYNE DETECTION
    Publication number: 20210293959
    Abstract: A LiDAR device is disclosed that measures a distance based on self-heterodyne detection using coherence.
    Type: Application
    Filed: March 26, 2020
    Publication date: September 23, 2021
    Inventors: Hyo-Hoon PARK, Hyeonho YOON, Nam-Hyun KWON, Kyeongjin HAN