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公开(公告)号：US20200150420A1
公开(公告)日：2020-05-14
申请号：US16668574
申请日：2019-10-30
Inventor： Eui Su LEE , Kyung Hyun PARK , IL MIN LEE , Kiwon MOON , Dong Woo PARK , Hyun Soo KIM , Ho Jin LEE , Jeong Woo PARK , Jun Hwan SHIN , Kyeong Sun CHOI , Dahye CHOI
Abstract: Provided are a polygon mirror assembly and a scan device. A polygon mirror assembly includes: a polygon mirror including a plurality of reflection surfaces spaced apart from a rotation axis by a predetermined distance; a first motor for rotating the polygon mirror around the rotation axis; a second motor for moving the polygon mirror in a first axial direction such that the rotation axis is tilted while the first motor rotates the polygon mirror; and a clock signal extraction surface for extracting a clock signal for detecting a change in a rotational speed of the first motor.
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公开(公告)号：US20180136397A1
公开(公告)日：2018-05-17
申请号：US15808640
申请日：2017-11-09
Inventor： Kyung Hyun PARK , Il Min LEE , Eui Su LEE , Ho Jin LEE , Sang Pil HAN , Hyun Soo KIM , Ki Won MOON , Dong Woo PARK
CPC classification number: G02B6/262 , G02B6/264 , G02B27/0927 , G02B27/0944
Abstract: An apparatus providing a terahertz (THz) wave may comprise at least one THz wave generator each of which generates a THz wave; at least one first phase adjuster adjusting a phase of the generated THz wave; at least one waveguide part receiving and combining the at least one phase-adjusted THz wave radiated from the at least one first phase adjuster, and guiding the combined THz wave; at least one second phase adjuster adjusting a phase of the combined THz wave from the at least one waveguide part, which is connected to the at least one waveguide part or disposed in a portion of the at least one waveguide part; and an output module outputting the THz wave guided from the at least one waveguide part.
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公开(公告)号：US20220158355A1
公开(公告)日：2022-05-19
申请号：US17528033
申请日：2021-11-16
Inventor： Dong-Young KIM , Mugeon KIM , Kyung Hyun PARK , Dong Woo PARK , Eui Su LEE , IL MIN LEE
Abstract: Provided is an antenna structure. The structure includes a dielectric lens, an antenna substrate on the dielectric lens, and antenna electrodes on the antenna substrate. Here, each of the antenna electrodes may include a wire electrode and an empty plane having a triangular shape defined by the wire electrode.
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公开(公告)号：US20220140170A1
公开(公告)日：2022-05-05
申请号：US17513805
申请日：2021-10-28
Inventor： Kiwon MOON , Kyung Hyun PARK , Dong Woo PARK , Jun-Hwan SHIN , Eui Su LEE , Hyun Soo KIM , IL MIN LEE
IPC: H01L31/102 , G02F2/02 , H01L31/0304 , H03B7/08 , H01L29/88
Abstract: Provided is a terahertz light source device including an antenna, a plurality of wire electrodes configured to connect the antenna to a power source, a capacitor connected to the wire electrodes between the antenna and the power source, and a plurality of resonance tunneling diodes connected to the wire electrodes between the capacitor and the antenna, and configured to generate a terahertz wave by coupling with the capacitor as a parallel resonance circuit with respect to the power source.
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公开(公告)号：US20230366741A1
公开(公告)日：2023-11-16
申请号：US18316027
申请日：2023-05-11
Inventor： Il Min LEE , DA HYE CHOI , Mugeon KIM , Kyung Hyun PARK , Dong Woo PARK , JUN-HWAN SHIN , Eui Su LEE
IPC: G01J9/04
CPC classification number: G01J9/04
Abstract: Disclosed is a phase shift measuring device, which includes a dual mode laser including a first beat light source generating a first beating signal and a second beat light source generating a second beating signal, and that outputs a dual mode signal including the first beating signal and the second beating signal, a first splitter that receives the dual mode signal to generate a first branch signal and a second branch signal, the first branch signal and the second branch signal being including the branched first beating signal and the branched second beating signal, respectively, a phase control unit that receives the first branch signal and to generate a combined signal, a transmitting end that receives the combined signal from the phase control unit and generates a transmission signal based on the combined signal, and a receiving end.
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Patent Agency Ranking
公开(公告)号：US20210281045A1
公开(公告)日：2021-09-09
申请号：US17183680
申请日：2021-02-24
Inventor： Hyun Soo Kim , Kyung Hyun PARK , Eui Su LEE , IL MIN LEE , Kiwon MOON , Dong Woo PARK , Jun-Hwan SHIN
Abstract: Disclosed is a terahertz wave generating apparatus. The terahertz wave generating apparatus includes a dual mode laser including a first single mode laser that generates a first beating signal, a gain adjustment region that modulates the first beating signal, and a second single mode laser that generates a second beating signal, and a photomixer that mixes the modulated first beating signal and the second beating signal, and that modulates a current supplied based on a beating frequency of the mixed beating signals to generate a terahertz wave signal, and the gain adjustment region is formed between the first single mode laser and the second single mode laser, and the first beating signal is output from the first single mode laser to the gain adjustment region and is modulated based on a reverse bias voltage supplied to the gain adjustment region.
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公开(公告)号：US20210172872A1
公开(公告)日：2021-06-10
申请号：US17099907
申请日：2020-11-17
Applicant: HYUNDAI MOTOR COMPANY , KIA MOTORS CORPORATION , ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
Inventor： Ha Seung SEONG , Ho Jin LEE , Il Min LEE , Ki Won MOON , Eui Su LEE , Dong Woo PARK , Jeong Woo PARK , Kyung Hyun PARK , Hyun Soo KIM
IPC: G01N21/3581 , G01B11/06
Abstract: A measurement apparatus for measuring a coating amount of a slurry according to the present disclosure includes a light emitter configured to irradiate terahertz wave onto a release paper coated with the slurry, a light receiver configured to receive the terahertz wave, which is irradiated from the light emitter and passes through the release paper coated with the slurry, to obtain a power of the terahertz wave, and a calculating part configured to calculate a thickness of an electrode, formed from the slurry applied to the release paper, based on the power of the terahertz wave received by the light receiver.
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公开(公告)号：US20200335639A1
公开(公告)日：2020-10-22
申请号：US16848826
申请日：2020-04-14
Inventor： Dong Woo PARK , Kyung Hyun PARK , Jeong Woo PARK , Jun Hwan SHIN , Eui Su LEE , Hyun Soo KIM , Kiwon MOON , IL MIN LEE
IPC: H01L29/872 , H01L29/205 , H01L29/47 , H01L21/306 , H01L21/285 , H01L29/66
Abstract: A Schottky barrier diode includes a substrate, a first semiconductor layer formed on the substrate, a second semiconductor layer formed on the first semiconductor layer, and a metal layer formed on the second semiconductor layer to form a Schottky barrier, wherein the first semiconductor layer and the second semiconductor layer are formed of different materials, and a conduction band offset between the first semiconductor layer and the second semiconductor layer is less than a set value.
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公开(公告)号：US20240063557A1
公开(公告)日：2024-02-22
申请号：US18325631
申请日：2023-05-30
Inventor： Young Ho KIM , Kyung Hyun PARK , Dong Woo PARK , JUN-HWAN SHIN , Il Min LEE
CPC classification number: H01Q23/00 , G01N22/00 , H01Q9/0407 , H01Q1/48 , H03D7/02
Abstract: Disclosed is an antenna-sub harmonic mixer block, which includes a dielectric block disposed on a PCB substrate having a ground surface, an antenna including first antenna patch provided on the dielectric block and having a metal patch and a slot, and a second antenna patch provided on the dielectric block, spaced apart from the first antenna patch to surround the first antenna patch, and that receives a ground voltage at the same potential as the ground surface of the PCB substrate, an RF ground wire disposed on the dielectric block and connected from the first antenna patch to a surface having the same potential as the ground surface, an RF switching stage disposed on the dielectric block, connected to the first antenna patch, and that provides a switching ON/OFF operation in conjunction with the RF ground wire depending on a magnitude of a local signal LO.
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公开(公告)号：US20230065768A1
公开(公告)日：2023-03-02
申请号：US17507796
申请日：2021-10-21
Inventor： Dong Woo PARK , Kyung Hyun PARK , Dong-Young KIM , Mugeon KIM , Jun-Hwan SHIN , Eui Su LEE , IL MIN LEE , Da Hye CHOI
IPC: H01L31/02 , H01L23/66 , H01L31/0232 , H01L31/0304 , H01L31/09 , H01L31/18
Abstract: Disclosed is a method for fabricating a terahertz device, the method including providing a substrate, doping a conductive impurity on an upper surface of the substrate to form an electrode layer, patterning the electrode layer to form antenna electrodes, and forming a photomixer between the antenna electrodes.
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