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1 JP2020501130A
光学測距システムによる適応走査の方法およびシステム
Publication/Patent Number: JP2020501130A Publication Date: 2020-01-16 Application Number: 2019527214 Filing Date: 2017-11-21 Inventor: Assignee: IPC: G01S7/491 Abstract: 走査レーザ測距システムによる適応走査の技術は、疎角解像度で距離測定値を得る工程、および距離ゲートサブセットと特徴的距離とを決定する工程を含む。細密角解像度は、特徴的距離と目標空間解像度に基づく。細密角解像度が疎角解像度より細密である場合、最小垂直角と最大垂直角は、第1の角解像度に基づいて角幅のサブセットの水平スライスに対して決定される。走査レーザ測距システムはその後、最小垂直角と最大垂直角との間のスライスにおける第2の角解像度で、第2の距離測定値を得るために動作される。いくつかの実施形態では、走査は、スライスに対する最小垂直角と最大垂直角を用いて距離ゲートサブセットにおける各水平スライスに対して反復される。【選択図】図4
2 US2020209366A1
FMCW LIDAR WITH WAVELENGTH DIVERSITY
Publication/Patent Number: US2020209366A1 Publication Date: 2020-07-02 Application Number: 16/236,484 Filing Date: 2018-12-29 Inventor: Maleki, Lutfollah   Assignee: GM Cruise Holdings LLC   IPC: G01S7/491 Abstract: Various technologies described herein pertain to multiple laser, single optical resonator lidar systems. A lidar system includes a single optical resonator optically coupled to at least a first laser and a second laser. The optical resonator is formed of an electrooptic material. The first laser and the second laser are optically injection locked to the optical resonator. Moreover, a modulator applies a time-varying voltage to the optical resonator to control modulation of an optical property of the electrooptic material, which causes the first laser to generate a first frequency modulated optical signal comprising a first series of optical chirps and/or the second laser to generate a second frequency modulated optical signal comprising a second series of optical chirps. Further, front end optics transmits at least a portion of the first frequency modulated optical signal and/or the second frequency modulated optical signal into an environment from the lidar system.
3 EP3591426A1
3D SENSOR AND METHOD FOR MONITORING AN AREA
Publication/Patent Number: EP3591426A1 Publication Date: 2020-01-08 Application Number: 19181910.1 Filing Date: 2019-06-24 Inventor: Hornung, Armin   Neubauer, Matthias   Müller, Lars   Assignee: Sick AG   IPC: G01S7/491 Abstract: Es wird ein 3D-Sensor (10) zum Überwachen eines Überwachungsbereichs (12) angegeben, wobei der 3D-Sensor (10) mindestens einen Lichtempfänger (16a-b) zum Erzeugen eines Empfangssignals aus Empfangslicht aus dem Überwachungsbereich (12) sowie eine Steuer- und Auswertungseinheit (24) mit einem Speicher aufweist, die dafür ausgebildet ist, durch Auswerten des Empfangssignals Objekte (28) in dem Überwachungsbereich (12) zu erfassen und den kürzesten Abstand der erfassten Objekte (28) zu mindestens einem Bezugsvolumen (26a, 26b) zu bestimmen und für die Bestimmung des jeweiligen kürzesten Abstands eines erfassten Objekts (28) mindestens einen vorausberechneten Abstand zu dem Bezugsvolumen (26a, 26b) aus einem Speicher zu lesen.
4 EP3685183A1
LASER-BASED DEVICES UTILIZING IMPROVED SELF-MIX SENSING
Publication/Patent Number: EP3685183A1 Publication Date: 2020-07-29 Application Number: 18858764.6 Filing Date: 2018-09-17 Inventor: Fishman, Tal   Bakish, Tal   Assignee: Vocalzoom Systems Ltd   IPC: G01S7/491
5 EP3676632A1
COMBINATION PHOTODETECTOR ARRAYS FOR EXTENDED DYNAMIC RANGE
Publication/Patent Number: EP3676632A1 Publication Date: 2020-07-08 Application Number: 18786530.8 Filing Date: 2018-09-24 Inventor: Onal, Caner   Gassend, Blaise   Droz, Pierre-yves   Assignee: Waymo LLC   IPC: G01S7/486
6 CN111164452A
用于扩展的动态范围的组合光电检测器阵列
Under Examination
Publication/Patent Number: CN111164452A Publication Date: 2020-05-15 Application Number: 201880062259.5 Filing Date: 2018-09-24 Inventor: C.奥纳尔   B.加森德   P-y.德罗兹   Assignee: 伟摩有限责任公司   IPC: G01S7/486 Abstract: 本公开涉及改进LIDAR系统的动态范围的方法和系统。示例系统100包括单片集成在共享衬底102上的多个单光子光电检测器110和至少一个附加的光电检测器120。多个单光子光电检测器110和至少一个附加的光电检测器120被配置为检测来自共享视场的光。系统还包括被配置为执行操作的控制器150。操作包括:从多个单光子光电检测器110和至少一个附加的光电检测器120接收相应的光电检测器信号;从以下至少两个中选择光电检测器信号:两个接收的光电检测器信号和通过组合两个接收的光电检测器信号形成的组合光电检测器信号;以及基于所选择的光电检测器信号来确定视场中的光的强度。实施例涉及具有不同的相应光敏性、频谱响应性和/或动态范围属性的不同的光电检测器(例如,硅光电倍增管SiPM和线性模式雪崩光电二极管LmAPD)的组合。这种检测器组合可以在高光水平下提供弱光检测以及高动态范围(例如,具有回射、近范围物体的场景等)。示例实施例包括以单片方式集成的雪崩二极管APD和SiPM的组合。作为示例实施例,可以使用一个或两个附加的光刻掩模制造步骤在与SiPM检测器阵列相同的衬底上制造APD设备。在弱光情况下,逻辑单元130可以选择SiPM信号代表实际光强度,并且忽略有噪声的或非线性的APD信号。在强光情况下,逻辑单元130可以选择APD信号代表实际光强度,并且忽略饱和的SiPM信号。在其他光水平情况下,来自APD和SiPM的相应信号可以以不同的比例混合或加权,以提供相对于检测到的光子的基本线性的信号强度。
7 US2020041628A1
TIME OF FLIGHT SENSORS AND SENSING METHODS
Publication/Patent Number: US2020041628A1 Publication Date: 2020-02-06 Application Number: 16/508,276 Filing Date: 2019-07-10 Inventor: Emadi, Arvin   Razzell, Charles J.   Hanks, John P.   Assignee: Maxim Integrated Products, Inc.   IPC: G01S7/491 Abstract: A time of flight sensor includes a time of flight (TOF) processor having a digital TOF port, a digital input port, and a digital output port, the TOF processor comprising a phase detector including cyclically rotating demultiplexer (DEMUX), a first summer coupled to a first DEMUX output, a second summer coupled to a second DEMUX output, a third summer coupled to a third DEMUX output, a fourth summer coupled to a fourth DEMUX output, and a phase estimator coupled to outputs of the first summer, the second summer, the third summer and the fourth summer and having a phase estimate output; a driver having a digital driver port coupled to the digital TOF port and a driver output port; and an analog-to-digital converter (ADC) having an output port coupled to the digital input port of the digital TOF processor.
8 US202011996A1
MULTIPLE BEAM RANGE MEASUREMENT PROCESS
Publication/Patent Number: US202011996A1 Publication Date: 2020-01-09 Application Number: 20/191,655 Filing Date: 2019-08-29 Inventor: Sebastian, Richard   Assignee: DSCG Solutions, Inc.   IPC: G01S17/58 Abstract: In one general aspect, an apparatus can include a first laser subsystem configured to transmit a first laser beam at a first location on an object at a time and a second laser subsystem configured to transmit a second laser beam at a second location on the object at the time. The apparatus can include an analyzer configured to calculate a first velocity based on a first reflected laser beam reflected from the object in response to the first laser beam. The analyzer can be configured to calculate a second velocity based on a second reflected laser beam reflected from the object in response to the second laser beam. The first location can be targeted by the first laser subsystem and the second location can be targeted by the second laser subsystem such that the first velocity is substantially the same as the second velocity.
9 US2020049804A1
LASER RADAR DEVICE
Publication/Patent Number: US2020049804A1 Publication Date: 2020-02-13 Application Number: 16/341,345 Filing Date: 2016-11-02 Inventor: Haraguchi, Eisuke   Ando, Toshiyuki   Assignee: Mitsubishi Electric Corporation   IPC: G01S7/491 Abstract: There is the problem with conventional laser radar devices that it is difficult to determine the line of sight from measurement data. A laser radar device according to the present invention includes: a wavelength-tunable light source configured to emit light with a plurality of wavelengths; an optical branch coupler configured to divide the light emitted by the wavelength-tunable light source into local light and transmission light; an optical phase modulator configured to apply, to the transmission light or the local light, frequency shifts for wavelength discrimination of different shift amounts corresponding to the respective wavelengths of the light emitted by the wavelength-tunable light source; a wavelength separator configured to perform switching between light paths for output, in response to a wavelength of the transmission light; an optical antenna configured to emit into space the transmission light output by the wavelength separator, and configured to receive, as received light, backward-scattered light generated from transmission light in space in which lines of sight corresponding to the respective wavelengths of the transmission light are determined; an optical heterodyne receiver configured to receive the local light and the received light, and configured to perform heterodyne detection; and a signal processor configured to perform frequency analysis of an output signal of the optical heterodyne receiver.
10 US2020049825A1
IMAGE NOISE COMPENSATING SYSTEM, AND AUTO CLEAN MACHINE
Publication/Patent Number: US2020049825A1 Publication Date: 2020-02-13 Application Number: 16/654,022 Filing Date: 2019-10-16 Inventor: Wang, Guo-zhen   Assignee: PixArt Imaging Inc.   IPC: G01S17/48 Abstract: An image noise compensating system, comprising: a distance determining device, configured to determine whether a distance between an object and an electronic device comprising the image noise compensating system is larger than a distance threshold or not; an image sensor, comprising at least one image sensing unit, wherein the image sensor combines a plurality of image sensing units to sense images when the distance is smaller than the distance threshold and senses images without combining the image sensing units when the distance is larger than the distance threshold; and an noise compensating circuit, configured to compensate image noises according to the images sensed by the image sensor.
11 CN209946378U
一种处理多普勒激光频移信号的FPGA系统
Valid
Title (English): A fpga System for Processing Doppler Laser Frequency Shift Signal
Publication/Patent Number: CN209946378U Publication Date: 2020-01-14 Application Number: 201920707460.6 Filing Date: 2019-05-17 Inventor: 张亚妮   刘茹   吴圣博   Assignee: 陕西科技大学   IPC: G01S7/491 Abstract: 本实用新型公开了一种处理多普勒激光频移信号的FPGA系统,涉及光纤和激光测量设备技术领域,包括电源电路、下载电路、串行控制电路以及复位电路,串行控制电路以FPGA芯片为控制核心。本实用新型实现了针对低中频带多普勒频移信号的高速即时处理,多串口接收数据,稳定精确的处理数据,具有结构简单、设计灵活、性能稳定、成本低等优点。
12 US202041628A1
TIME OF FLIGHT SENSORS AND SENSING METHODS
Publication/Patent Number: US202041628A1 Publication Date: 2020-02-06 Application Number: 20/191,650 Filing Date: 2019-07-10 Inventor: Razzell, Charles J.   Emadi, Arvin   Hanks, John P.   Assignee: Maxim Integrated Products, Inc.   IPC: G01S17/36 Abstract: A time of flight sensor includes a time of flight (TOF) processor having a digital TOF port, a digital input port, and a digital output port, the TOF processor comprising a phase detector including cyclically rotating demultiplexer (DEMUX), a first summer coupled to a first DEMUX output, a second summer coupled to a second DEMUX output, a third summer coupled to a third DEMUX output, a fourth summer coupled to a fourth DEMUX output, and a phase estimator coupled to outputs of the first summer, the second summer, the third summer and the fourth summer and having a phase estimate output; a driver having a digital driver port coupled to the digital TOF port and a driver output port; and an analog-to-digital converter (ADC) having an output port coupled to the digital input port of the digital TOF processor.
13 US202049825A1
IMAGE NOISE COMPENSATING SYSTEM, AND AUTO CLEAN MACHINE
Publication/Patent Number: US202049825A1 Publication Date: 2020-02-13 Application Number: 20/191,665 Filing Date: 2019-10-16 Inventor: Wang, Guo-zhen   Assignee: PixArt Imaging Inc.   IPC: G01S17/48 Abstract: An image noise compensating system, comprising: a distance determining device, configured to determine whether a distance between an object and an electronic device comprising the image noise compensating system is larger than a distance threshold or not; an image sensor, comprising at least one image sensing unit, wherein the image sensor combines a plurality of image sensing units to sense images when the distance is smaller than the distance threshold and senses images without combining the image sensing units when the distance is larger than the distance threshold; and an noise compensating circuit, configured to compensate image noises according to the images sensed by the image sensor.
14 US2020072952A1
DEVICE FOR RECEIVING LIGHT FOR THE DETECTION OF AN OBJECT
Publication/Patent Number: US2020072952A1 Publication Date: 2020-03-05 Application Number: 16/551,389 Filing Date: 2019-08-26 Inventor: Kern, Oliver   Caspers, Jan Niklas   Assignee: Robert Bosch GmbH   IPC: G01S7/481 Abstract: A device for receiving light having at least one wavelength for the detection of an object, includes: an optical phased array including a plurality of optical phased sub-arrays, each optical phased sub-array including (a) a plurality of antennas and (b) a detector for coherently receiving light; and an evaluation unit connected to the optical phased sub-arrays and configured to determine the angle at which the object is detected.
15 US2020011996A1
MULTIPLE BEAM RANGE MEASUREMENT PROCESS
Publication/Patent Number: US2020011996A1 Publication Date: 2020-01-09 Application Number: 16/555,839 Filing Date: 2019-08-29 Inventor: Sebastian, Richard   Assignee: DSCG SOLUTIONS, INC.   IPC: G01S17/58 Abstract: In one general aspect, an apparatus can include a first laser subsystem configured to transmit a first laser beam at a first location on an object at a time and a second laser subsystem configured to transmit a second laser beam at a second location on the object at the time. The apparatus can include an analyzer configured to calculate a first velocity based on a first reflected laser beam reflected from the object in response to the first laser beam. The analyzer can be configured to calculate a second velocity based on a second reflected laser beam reflected from the object in response to the second laser beam. The first location can be targeted by the first laser subsystem and the second location can be targeted by the second laser subsystem such that the first velocity is substantially the same as the second velocity.
16 EP3327462B1
OPTOELECTRONIC SENSOR AND METHOD FOR DETECTING OBJECT INFORMATION
Publication/Patent Number: EP3327462B1 Publication Date: 2020-05-27 Application Number: 17198922.1 Filing Date: 2017-10-27 Inventor: Hofmann, Christoph   KrÄmer, Joachim   Sigmund, Herr Jörg   Assignee: SICK AG   IPC: G01V8/12
17 US2020292680A1
TECHNIQUE FOR REDUCING IMPACT OF BACKSCATTER IN COHERENT LASER DETECTION AND RANGING (LADAR) SYSTEMS
Publication/Patent Number: US2020292680A1 Publication Date: 2020-09-17 Application Number: 16/355,346 Filing Date: 2019-03-15 Inventor: Coda, Robert J.   Assignee: Raytheon Company   IPC: G01S7/491 Abstract: A method includes generating a transmit beam in different intervals of time and directing the transmit beam towards an area or object of interest. The method also includes receiving a receive beam that includes the transmit beam as reflected from the area or object of interest. The method further includes generating local oscillator (LO) laser light. The transmit beam and the LO laser light are frequency-shifted such that the transmit beam has a higher frequency than the LO laser light in a first subset of the intervals and a lower frequency than the LO laser light in a second subset of the intervals. In addition, the method includes processing the LO laser light and the receive beam to identify information about the area or object of interest.
18 EP3602112A1
LIDAR TRANSMITTER AND DETECTOR SYSTEM USING PULSE ENCODING TO REDUCE RANGE AMBIGUITY
Publication/Patent Number: EP3602112A1 Publication Date: 2020-02-05 Application Number: 18776449.3 Filing Date: 2018-03-28 Inventor: Campbell, Scott R.   Lachapelle, Joseph G.   Eichenholz, Jason M.   Russell, Austin K.   Assignee: Luminar Technologies, Inc.   IPC: G01S7/491
19 CN111615644A
传感器设备
Public
Publication/Patent Number: CN111615644A Publication Date: 2020-09-01 Application Number: 201980008708.2 Filing Date: 2019-01-15 Inventor: O·克恩   T·布罗舍   Assignee: 罗伯特·博世有限公司   IPC: G01S17/32 Abstract: 本发明涉及一种用于确定对象的距离和/或速度的传感器设备,该传感器设备包括:用于将至少一个频率的光发射到对象上的发送装置,其中,该发送装置构造为用于将光辐射到至少一个角度范围中,其中,所述光在该角度范围中基本上同时随频率与时间有关地在不同的频率范围中变化;用于接收由对象反射的光的接收装置,其中,该接收装置构造为用于在至少两个时间点对在对应的频率范围中的所接收的光进行采样;分析评价装置,该分析评价装置构造用于借助所发射的光和所接收的光的采样时间点来确定对象的距离和/或速度。
20 US2020110161A1
LIDAR SPECTRUM ANALYZER
Publication/Patent Number: US2020110161A1 Publication Date: 2020-04-09 Application Number: 16/582,434 Filing Date: 2019-09-25 Inventor: Talty, Timothy J.   Mulqueen, Michael   Li, James Chingwei   Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC   IPC: G01S7/491 Abstract: A Lidar system and method of detecting an object is disclosed. The Lidar system includes a photodetector, a spectrum analyzer and a processor. The photodetector generates an electrical signal in response to a reflected light beam received at the photodetector, the reflected light beam being a reflection of a chirp signal from the object. The electrical signal has a bandwidth the same as a bandwidth of the chirp signal. The spectrum analyzer includes a power divider that partitions the electrical signal into a plurality of channels, an analog-to-digital converter that converts the electrical signal within a selected channel from an analog signal to a digital signal, and a comb filter that provides output from the selected channel from the power divider to the analog-to-digital converter. The processor determines a parameter of the object from the digital signal in the selected channel.