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公开(公告)号：US20220244615A1
公开(公告)日：2022-08-04
申请号：US17528628
申请日：2021-11-17
Applicant: Hyundai Motor Company , Kia Corporation , Korea Advanced Institute of Science and Technology
Inventor： Chan-Hee Kang , Hyun-Woo Rhee , Hyeon-Ho Yoon , Nam-Hyun Kwon , Hyo-Hoon Park , Geum-Bong Kang
IPC: G02F1/295
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.
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Patent Agency Ranking
公开(公告)号：US11329725B2
公开(公告)日：2022-05-10
申请号：US17010277
申请日：2020-09-02
Inventor： HyoHoon Park , Joonsup Shim , Seonghwan Kim , Hyun-Woo Rhee
Abstract: A device system for constituting a 3D image sensor based on optical phased array is provided. The device system includes an optical modulator that is integrated on the same photonic integrated circuit (PIC) chip as a laser diode array with different output wavelengths and a multiplexer for transmitting an optical wave having a wavelength selected from the laser diode array to an optical waveguide and modulates the optical wave into a specific optical signal, an optical phased array that radiates the optical signal received via an optical switch to the free space using a tunable transmit and receive (TRx) antenna array, and a photodetector that converts an Rx optical signal received by a Tx optical signal transmitted via the optical phased array into an electrical signal.
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公开(公告)号：US12147143B2
公开(公告)日：2024-11-19
申请号：US18373482
申请日：2023-09-27
Applicant: Hyundai Motor Company , Kia Corporation , Korea Advanced Institute of Science and Technology
Inventor： Chan-Hee Kang , Hyun-Woo Rhee , Hyeon-Ho Yoon , Nam-Hyun Kwon , Hyo-Hoon Park , Geum-Bong Kang
IPC: G02F1/295
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.
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公开(公告)号：US11609330B2
公开(公告)日：2023-03-21
申请号：US16839277
申请日：2020-04-03
Inventor： Hyo-Hoon Park , Hyeonho Yoon , Nam-Hyun Kwon , Kyeongjin Han , Hyun-Woo Rhee , Geum-Bong Kang
IPC: G01S7/481 , G01S17/32 , G01S7/4913
Abstract: A silicon phased array based LiDAR device that measures a distance using a quasi-frequency modulation is disclosed. A LiDAR device according to an exemplary embodiment of the inventive concept includes a light source that generates an optical signal, an optical modulator that generates a first optical signal having a quasi-frequency whose a modulation frequency constantly varies with time by modulating a light intensity of the optical signal, an optical splitter that splits optical power of the first optical signal into a reference optical signal and a transmit (Tx) optical signal, an optical transmitter that receives and emits the Tx optical signal toward an object, an optical receiver that receives a receive (Rx) optical signal reflected from the object and transfers the Rx optical signal, an optical coupler that mixes the reference optical signal and the Rx optical signal, a balanced photodetector that detects an intermediate frequency from the optical signal transferred from the optical coupler and a distance calculator that obtains distance information by measuring the intermediate frequency.
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公开(公告)号：US20210067251A1
公开(公告)日：2021-03-04
申请号：US17010277
申请日：2020-09-02
Inventor： HyoHoon Park , Joonsup Shim , Seonghwan Kim , Hyun-Woo Rhee
Abstract: A device system for constituting a 3D image sensor based on optical phased array is provided. The device system includes an optical modulator that is integrated on the same photonic integrated circuit (PIC) chip as a laser diode array with different output wavelengths and a multiplexer for transmitting an optical wave having a wavelength selected from the laser diode array to an optical waveguide and modulates the optical wave into a specific optical signal, an optical phased array that radiates the optical signal received via an optical switch to the free space using a tunable transmit and receive (TRx) antenna array, and a photodetector that converts an Rx optical signal received by a Tx optical signal transmitted via the optical phased array into an electrical signal.
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公开(公告)号：US20240027868A1
公开(公告)日：2024-01-25
申请号：US18373482
申请日：2023-09-27
Applicant: Hyundai Motor Company , Kia Corporation , Korea Advanced Institute of Science and Technology
Inventor： Chan-Hee Kang , Hyun-Woo Rhee , Hyeon-Ho Yoon , Nam-Hyun Kwon , Hyo-Hoon Park , Geum-Bong Kang
IPC: G02F1/295
CPC classification number: G02F1/2955
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.
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