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公开(公告)号：US11867811B2
公开(公告)日：2024-01-09
申请号：US17458660
申请日：2021-08-27
发明人： Heesun Yoon , Jungwoo Kim , Tatsuhiro Otsuka , Inoh Hwang
CPC分类号： G01S17/10
摘要： Provided are a LiDAR device and a method of operating the LiDAR device. The LiDAR device includes a light-emitting unit configured to emit modulated light onto an object, a light-receiving unit configured to receive the modulated light reflected by the object, a computation unit configured to calculate a distance to the object based on a reception signal of the modulated light provided by the light-receiving unit, a modulation unit configured to provide a modulation signal to the light-emitting unit to generate the modulated light, and a controller configured to control operations of at least one of the light-emitting unit, the light-receiving unit, the computation unit, and the modulation unit.
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公开(公告)号：US11340340B2
公开(公告)日：2022-05-24
申请号：US16023681
申请日：2018-06-29
发明人： Jungwoo Kim , Tatsuhiro Otsuka , Heesun Yoon , Inoh Hwang
IPC分类号： G01S7/487 , G01S7/493 , G01S7/4865 , G01S7/4915 , G01S7/481 , G01S7/4863 , G01S17/08 , G01S17/42 , G01S17/931
摘要： Provided are a method of identifying light reflected from an object, from among light incident from a plurality of different directions, based on information about an irradiation angle of light irradiated by a light source, and a light detection and ranging (LiDAR) apparatus therefor.
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公开(公告)号：US11131772B2
公开(公告)日：2021-09-28
申请号：US15870005
申请日：2018-01-12
发明人： Heesun Yoon , Jungwoo Kim , Tatsuhiro Otsuka , Inoh Hwang
摘要： Provided are a LiDAR device and a method of operating the LiDAR device. The LiDAR device includes a light-emitting unit configured to emit modulated light onto an object, a light-receiving unit configured to receive the modulated light reflected by the object, a computation unit configured to calculate a distance to the object based on a reception signal of the modulated light provided by the light-receiving unit, a modulation unit configured to provide a modulation signal to the light-emitting unit to generate the modulated light, and a controller configured to control operations of at least one of the light-emitting unit, the light-receiving unit, the computation unit, and the modulation unit.
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公开(公告)号：US11029398B2
公开(公告)日：2021-06-08
申请号：US15888537
申请日：2018-02-05
发明人： Inoh Hwang , Dongjae Shin , Jungwoo Kim , Tatsuhiro Otsuka , Heesun Yoon
摘要： Light detection and ranging (LiDAR) systems and methods of operating the LiDAR systems are provided. The LiDAR system includes a light emitter configured to emit first lights of different wavelengths in a vertical direction and at different scanning angles with respect to a horizontal axis, a lens configured to converge second lights that are reflected from objects on which the first lights are emitted, and a light filter comprising an active-type device configured to adjust a transmission central wavelength of the active-type device to the different wavelengths of the first lights that are emitted from the light emitter. The LiDAR system further includes a controller configured to control an operation of the light emitter and the light filter, and a detector configured to detect light from the light emitter, and obtain information about the objects.
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公开(公告)号：US11808890B2
公开(公告)日：2023-11-07
申请号：US16825234
申请日：2020-03-20
发明人： Tatsuhiro Otsuka , Jungwoo Kim
IPC分类号： G01S17/26 , G01S7/481 , G01S7/484 , G01S7/4865
CPC分类号： G01S7/4817 , G01S7/484 , G01S7/4815 , G01S7/4865 , G01S17/26
摘要： Provided are a light detection and ranging (LiDAR) device and a method using the same. The LiDAR device includes a light scanner configured to periodically scan a region in a surrounding area by sequentially changing a traveling path of incident light; a first light source configured to provide a first light to the light scanner in a first incidence direction; and a second light source configured to provide a second light to the light scanner in a second incidence direction different from the first incidence direction.
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公开(公告)号：US11614524B2
公开(公告)日：2023-03-28
申请号：US17313578
申请日：2021-05-06
发明人： Inoh Hwang , Dongjae Shin , Jungwoo Kim , Tatsuhiro Otsuka , Heesun Yoon
摘要： Light detection and ranging (LiDAR) systems and methods of operating the LiDAR systems are provided. The LiDAR system includes a light emitter configured to emit first lights of different wavelengths in a vertical direction and at different scanning angles with respect to a horizontal axis, a lens configured to converge second lights that are reflected from objects on which the first lights are emitted, and a light filter comprising an active-type device configured to adjust a transmission central wavelength of the active-type device to the different wavelengths of the first lights that are emitted from the light emitter. The LiDAR system further includes a controller configured to control an operation of the light emitter and the light filter, and a detector configured to detect light from the light emitter, and obtain information about the objects.
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公开(公告)号：US20230063732A1
公开(公告)日：2023-03-02
申请号：US17721624
申请日：2022-04-15
发明人： Dongjae Shin , Hyunil Byun , Kyunghyun Son , Changgyun Shin , Tatsuhiro Otsuka , Jisan Lee
IPC分类号： G01S7/4865 , G01S17/26 , G01S7/486
摘要： An object detection device and an operating method thereof are provided. The object detection device detects light and outputs a received signal, which is an electrical signal, time-delays a part of the received signal with respect to a rest of the received signal, converts the rest of the received signal into a digital signal, converts the time-delayed part of the received signal into one or more time-delayed digital signals, and determines a distance to an object based on the digital signal and the one or more time-delayed digital signals.
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公开(公告)号：US11112493B2
公开(公告)日：2021-09-07
申请号：US16034033
申请日：2018-07-12
发明人： Heesun Yoon , Inoh Hwang , Tatsuhiro Otsuka
摘要： Provided is a light detection and ranging (LiDAR) system including: a light source; a beam steering device configured to steer light emitted from the light source toward an object; a light detector configured to detect light reflected from the object; and a processor. The beam steering device may include an optical phased array, including a plurality of channels, and a signal input unit which applies a plurality of driving signals to the plurality of channels. The processor is configured to perform an optimization operation including analyzing the light detected by the light detector, calculating at least one correction value, and controlling the plurality of driving signals according to the at least one correction value, in order to correct an error of the beam steering device.
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公开(公告)号：US10830876B2
公开(公告)日：2020-11-10
申请号：US15812492
申请日：2017-11-14
发明人： Tatsuhiro Otsuka , Jungwoo Kim , Heesun Yoon
IPC分类号： G01S7/48 , G01S7/4861 , G01S17/10 , H03G7/08 , G01S7/4865 , H03G11/02 , G01J1/44
摘要： Provided are a distance-measuring device and a method thereof. The distance-measuring device detects light reflected by an object and converts the light into electrical signals, outputs a saturation signal equal to or greater than a reference value from among the electrical signals, detects a peak using the saturation signal, and measures a distance to the object using the peak.
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公开(公告)号：US20200174104A1
公开(公告)日：2020-06-04
申请号：US16535902
申请日：2019-08-08
发明人： Jungwoo KIM , Tatsuhiro Otsuka , Yongchul Cho
摘要： Provided in a light detection and ranging (LiDAR) device including a scanning optical system including a plurality of light sources and a beam steering device, the scanning optical system being configured to scan an object with a plurality of irradiation beams projected from the plurality of light sources toward the object at a plurality of irradiation angles, respectively, a light detector including a plurality of pixel regions that are configured to separately detect the plurality of irradiation beams projected toward the object at the plurality of irradiation angles and reflected from the object, and a processor configured to control the scanning optical system and the light detector, and obtain information about the object based on the plurality of irradiation beams detected by the light detector.
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