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公开(公告)号：US10658538B2
公开(公告)日：2020-05-19
申请号：US15956107
申请日：2018-04-18
Inventor： Jae-Sik Sim , Kisoo Kim , Won Seok Han
IPC: H01L31/107 , H01L31/02 , H01L31/18 , H01L31/0216 , H01L31/0304 , H01L31/0224 , H01L31/0352
Abstract: Provided is an optical detection device including a first ohmic contact layer of a first conductivity type, a second ohmic contact layer of a second conductivity type, and first and second mesa structures stacked between the first and second ohmic contact layers. The first mesa structure includes an electric field buffer layer; and a diffusion layer formed in the electric field buffer layer. The second mesa structure includes a light absorbing layer and a grading layer on the light absorbing layer.
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Patent Agency Ranking
公开(公告)号：US20140240691A1
公开(公告)日：2014-08-28
申请号：US13916250
申请日：2013-06-12
Inventor： Bongki MHEEN , MyoungSook Oh , Kisoo Kim , Jae-Sik Sim , Yong-Hwan Kwon , Eun Soo Nam
IPC: G01S17/89
CPC classification number: G01S17/89 , G01S7/4815 , G01S7/4818 , G01S7/484 , G01S7/4863
Abstract: Disclosed are a laser radar system and a method for acquiring an image of a target, and the laser radar system includes: a beam source to emit the laser beam; a beam deflector disposed between the beam source and the target, and configured to deflect the laser beam emitted from the beam source in a scanning direction of the target as time elapses; and an optical detector configured to detect the laser beam reflected from the target, which is provided a plurality of beam spots having a diameter DRBS; and a receiving optical system disposed between the target and the optical detector and configured to converge the laser beam reflected from the target, and the optical detector includes a detecting area having a diameter DDA that satisfies an equation of √{square root over (/2)}×PRBS+2×DRBS≦DDA≦2×Dlens and an equation of (4/π)×λ×F_number
Abstract translation: 公开了一种用于获取目标图像的激光雷达系统和方法，并且激光雷达系统包括：发射激光束的光束源; 光束偏转器，设置在所述光束源和所述目标之间，并且被配置为随着时间的过去使从所述光束源发射的激光束沿所述目标的扫描方向偏转; 以及光检测器，被配置为检测从所述目标物反射的激光束，所述激光束设置有多个具有直径DRBS的光束点; 以及接收光学系统，设置在所述目标和所述光学检测器之间并且被配置为会聚从所述目标物反射的所述激光束，并且所述光学检测器包括具有直径DDA的检测区域，所述检测区域满足以下等式：√{平方根超过（/ 2 ）}×PRBS + 2×DRBS＆nlE; DDA＆nlE; 2×Dlens和（4 /＆pgr;）×λ×F_number
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公开(公告)号：US10763969B2
公开(公告)日：2020-09-01
申请号：US16439294
申请日：2019-06-12
Inventor： Sungil Kim , Jung Min Park , Minje Song , Minhyup Song , Jae-Sik Sim , Joon Tae Ahn
IPC: H04B10/04 , H04B10/508 , H04B10/564 , H04L25/03
Abstract: An embodiment of the inventive concept includes an optical signal generating circuit, a controlling circuit, a waveform shaping circuit, and an output circuit. The optical signal generating circuit generates a first optical signal including pulses. The controlling circuit generates a control signal indicating a first pulse to be attenuated in magnitude among the pulses. The waveform shaping circuit attenuates a magnitude of the first pulse based on the control signal and the first optical signal, and generates a second optical signal including pulses corresponding to the pulses included in the first optical signal and the first pulse having the attenuated magnitude. The output circuit outputs an electric signal of bands corresponding to differences between frequencies of the pulses included in the second optical signal based on the second optical signal. A band corresponding to the first pulse among the bands of the electric signal is adjusted as the magnitude of the first pulse is attenuated.
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4.发明授权公开(公告)号：US10454523B1
公开(公告)日：2019-10-22
申请号：US16162098
申请日：2018-10-16
Inventor： Sungil Kim , Jung Min Park , Minje Song , Minhyup Song , Jae-Sik Sim , Joon Tae Ahn
IPC: H04B1/7156 , H04B1/7136 , H04B7/0413 , G02B6/12
Abstract: A radio frequency signal generation device may include an optical comb generator configured to generate an optical comb signal including a plurality of first wavelength signals having different wavelengths; a pulse shaper configured to attenuate remaining wavelength signals excluding a plurality of second wavelength signals among the plurality of first wavelength signals; an optical-electronic converter configured to generate a radio frequency signal including a carrier frequency signal from the plurality of second wavelength signals outputted from the pulse shaper; and a pulse shaping controller configured to control the pulse shaper such that a carrier frequency of the carrier frequency signal varies according to a frequency hopping pattern.
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公开(公告)号：US09857472B2
公开(公告)日：2018-01-02
申请号：US14321649
申请日：2014-07-01
Inventor： Bongki Mheen , Myoungsook Oh , Jae-Sik Sim , Jung-Ho Song , Hong-Seok Seo , Minhyup Song
CPC classification number: G01S17/936 , G01S7/4817 , G01S17/87 , G01S17/89
Abstract: Provided is a laser radar system. The laser radar system includes a first transmission and reception unit sequentially radiating a first laser beam to a plurality of locations within a first view range and receiving a reflected light; and a second transmission and reception unit sequentially radiating a second laser beam to a plurality of locations within a second view range and receiving a reflected light, wherein each of the first transmission and reception unit and the second transmission and reception unit is fixed to a loader and independently searches for the first view range and the second view range.
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公开(公告)号：US09234964B2
公开(公告)日：2016-01-12
申请号：US13916250
申请日：2013-06-12
Inventor： Bongki Mheen , MyoungSook Oh , Kisoo Kim , Jae-Sik Sim , Yong-Hwan Kwon , Eun Soo Nam
CPC classification number: G01S17/89 , G01S7/4815 , G01S7/4818 , G01S7/484 , G01S7/4863
Abstract: Disclosed are a laser radar system and a method for acquiring an image of a target, and the laser radar system includes: a beam source to emit the laser beam; a beam deflector disposed between the beam source and the target, and configured to deflect the laser beam emitted from the beam source in a scanning direction of the target as time elapses; and an optical detector configured to detect the laser beam reflected from the target, which is provided a plurality of beam spots having a diameter DRBS; and a receiving optical system disposed between the target and the optical detector and configured to converge the laser beam reflected from the target, and the optical detector includes a detecting area having a diameter DDA that satisfies an equation of √{square root over (2)}×PRBS+2×DRBS≦DDA≦2×Dlens and an equation of (4/π)×λ×F_number
Abstract translation: 公开了一种用于获取目标图像的激光雷达系统和方法，并且激光雷达系统包括：发射激光束的光束源; 光束偏转器，设置在所述光束源和所述目标之间，并且被配置为随着时间的过去使从所述光束源发射的激光束沿所述目标的扫描方向偏转; 以及光检测器，被配置为检测从所述目标物反射的激光束，所述激光束设置有多个具有直径DRBS的光束点; 以及接收光学系统，其设置在所述目标和所述光学检测器之间并且被配置为会聚从所述目标物反射的所述激光束，并且所述光学检测器包括检测区域，所述检测区域具有满足方程式（2）的直径DDA， }×PRBS + 2×DRBS＆nlE; DDA＆nlE; 2×Dlens和（4 /＆pgr;）×λ×F_number
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