Of Pulse Transit Time Patents (Class 356/5.01)
  • Patent number: 11221410
    Abstract: A light sensor or the like that has an improved measurement speed is realized. A light sensor includes a computation unit that computes a distance between the light sensor and a sensing object on the basis of a difference between a center position of reflection light, which indicates a center position of distribution of light reception probability of a first light receiving unit in a first histogram, and a center position of reference light, which indicates a center position of distribution of light reception probability of a second light receiving unit in a second histogram.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: January 11, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yoshiki Ikuta, Takuma Hiramatsu, Takayuki Shimizu, Hideki Sato
  • Patent number: 11221392
    Abstract: A system and method for communicating data using lidar, the method being carried out by a lidar communication system, the method including: activating a data communication mode of a lidar unit; preparing data for communication using lidar; after activating the data communication mode, emitting a plurality of light pulses using the lidar unit, wherein the plurality of light pulses are emitted in a manner so as to convey the prepared data to an external lidar communication device; and receiving an acknowledgment message, wherein the acknowledgment message indicates receipt of the prepared data at the external lidar communication device.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: January 11, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael Ames, David H. Clifford, Andrew J. Lingg
  • Patent number: 11221208
    Abstract: A distance measurement device includes an imaging unit which captures a subject image formed by an imaging optical system, an emission unit which emits directional light as light having directivity along an optical axis direction of the imaging optical system, a light receiving unit which receives reflected light of the directional light from the subject, a derivation unit which derives a distance to the subject based on the timing at which the directional light is emitted and the timing at which the reflected light is received, a display unit which displays the subject image, and a control unit which performs control such that, in a case of performing a distance measurement, the display unit displays the subject image as a motion image and transition is made to a state where actual exposure by the imaging unit is possible at the timing of the end of the distance measurement.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: January 11, 2022
    Assignee: FUJIFILM CORPORATION
    Inventors: Tomonori Masuda, Hiroshi Tamayama
  • Patent number: 11215597
    Abstract: Systems, apparatuses and methods for determining a risk of catastrophic failure for a tree based on a mechanistic model of physical characteristics of the tree are described. The systems, apparatuses and methods include a mobile sensing platform comprising one or more sensors for obtaining data, a transport vehicle configured to transport the mobile sensing platform, a positioning sensor configured to precisely calculate geographic coordinates of the positioning sensor and the location of the positioning sensor relative to a reference object as positioning data, and a processor configured to fuse the imaging data and the positioning data in order to determine conditions for catastrophic tree failure.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: January 4, 2022
    Assignee: AGERPOINT, INC.
    Inventors: Alan Overton, Tyler Mullenbach, Karl Steddon, K. Thomas McPeek
  • Patent number: 11209664
    Abstract: A 3D imaging system includes an optical modulator for modulating a returned portion of a light pulse as a function of time. The returned light pulse portion is reflected or scattered from a scene for which a 3D image or video is desired. The 3D imaging system also includes an element array receiving the modulated light pulse portion and a sensor array of pixels, corresponding to the element array. The pixel array is positioned to receive light output from the element array. The element array may include an array of polarizing elements, each corresponding to one or more pixels. The polarization states of the polarizing elements can be configured so that time-of-flight information of the returned light pulse can be measured from signals produced by the pixel array, in response to the returned modulated portion of the light pulse.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: December 28, 2021
    Assignee: NLIGHT, INC.
    Inventors: Paul S. Banks, Bodo Schmidt, C. Stewart Tuvey, Lorenzo N. Venneri
  • Patent number: 11210954
    Abstract: A vehicular communication apparatus is configured to be mounted on a movable body and to receive movement data related to movements of other movable bodies. The apparatus includes an acquiring unit, a memory, and a data managing unit. The acquiring unit is configured to acquire the movement data on the other movable bodies. The memory is configured to store and record therein the movement data acquired by the acquiring unit. The data managing unit is configured to manage the record of the movement data in the memory. The data managing unit is configured to acquire a virtual speed of each movable body that is obtained from the movement data recorded in the memory, and invalidate or delete the movement data recorded in the memory on a movable-body by movable-body basis, in accordance with the acquired virtual speed of each movable body.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: December 28, 2021
    Assignee: SUBARU CORPORATION
    Inventors: Haruyo Miyakawa, Hyoungwook Choi, Satoru Ikeda
  • Patent number: 11209527
    Abstract: An optical scanning device is provided in a pulse distance measurement radar apparatus. The optical scanning device includes reflectors that are arranged right outside a scanning angle of an optical beam, an optical detector that is arranged at a position where reflected light from the reflectors reaches, and a scanning angle detector that detects the scanning angle of the optical beam based on result of detection by the optical detector.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 28, 2021
    Assignee: DENSO CORPORATION
    Inventor: Yoshiaki Hoashi
  • Patent number: 11205279
    Abstract: An imaging device includes a pixel section having a plurality of pixels, and a signal processor configured to apply control signals to the pixel section according to a Gray code coding scheme to generate a first pixel signal, a second pixel signal, and a third pixel signal based on light reflected from an object. The signal processor is configured to calculate a distance to the object based on the first pixel signal, the second pixel signal, and the third pixel signal.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: December 21, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Ping Wah Wong
  • Patent number: 11204421
    Abstract: A distance measuring device includes a controller and a distance calculator. The controller sets, in a first time period, a first measurement time range corresponding to a first measurement distance range; causes a light emitter to emit light and places a light receiver into an exposure state, in the first measurement time range; sets, in a second time period, a second measurement time range corresponding to a second measurement distance range; and causes the light emitter to emit light and places the light receiver into an exposure state, in the second measurement time range. At least one measurement condition is different between the first and second time periods. The distance calculator calculates the distance from the distance measuring device to a measurement target, based on the time from the emission to the reflection of light. The time is in at least one of the first and second time periods.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 21, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD
    Inventors: Akito Inoue, Masato Takemoto, Shinzo Koyama, Motonori Ishii, Shigeru Saitou
  • Patent number: 11199405
    Abstract: Provided is a distance measuring device and a method of measuring a distance. The distance measuring device detects light reflected by an object, generates an electrical signal based on the detected light, detects whether the electrical signal is saturated or not by comparing the electrical signal with a reference value, controls a magnitude of the electrical signal based on whether the signal is saturated, and calculates a distance to the object using the electrical signal.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: December 14, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tatsuhiro Otsuka, Jungwoo Kim, Heesun Yoon, Inoh Hwang
  • Patent number: 11199631
    Abstract: Apparatus and methods for geo-locating an object. In some examples, a device for determining a geolocation of an object can include a receiver, a signal generator, a detector, and a central processing unit. The receiver can be configured to receive a location signal from a navigation satellite system. The signal generator can be configured to emit an electromagnetic radiation signal of visible light onto an object to be geolocated. The detector can be configured to receive a reflection of the emitted electromagnetic radiation signal of visible light from the object. The central processing unit can be configured to provide geographic coordinates of the device and geographic coordinates of the object based on the reflection of the emitted electromagnetic radiation signal of visible light from the object.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: December 14, 2021
    Assignee: CRITERIONIX, L.L.C.
    Inventors: Dilhar Mihidu De Silva, Frank Mease
  • Patent number: 11200654
    Abstract: In one aspect, a system for determining field characteristics during the performance of an agricultural operation may include an imaging device configured to capture image data associated with a portion of the field within a field of view of the imaging device. The system may also include an illumination device configured to emit a light directed at the portion of the field within the field of view of the imaging device. Furthermore, a controller of the system may be configured to control an operation of the illumination device such that a light pattern is displayed on a field surface of the field. Moreover, the controller may be configured to receive image data indicative of the displayed light pattern from the imaging device. Additionally, the controller may be configured to determine a field characteristic of the field based on the displayed light pattern.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: December 14, 2021
    Assignee: CNH Industrial America LLC
    Inventor: Sai Raghavendra Prasad Poosa
  • Patent number: 11187523
    Abstract: Systems and methods for three-dimensional (3D) shape estimation of objects embedded in light-scattering media via polarimetry are provided. The systems and methods utilize polarization to exploit forward scattering in the light-scattering medium to mitigate backscatter interference (BSI).
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: November 30, 2021
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Michael J. DeWeert, Eric M. Louchard, Reid A. Noguchi, Dugan C. Yoon
  • Patent number: 11183522
    Abstract: The disclosure relates to a pixel array for a camera, in particular for a light propagation time camera, having: a plurality of pixel elements arranged in a matrix arrangement, wherein each individual pixel element has a photoelectric region and at least one other region which is non-sensitive to light; and a plurality of routing paths which are arranged in a grid-like manner and which divide the pixel array into fields. A group of first fields and a group of second fields are created, in which each of the first fields is provided by a photoelectric region of one of the pixel elements and each of the second fields is provided by the other regions, wherein the first fields and the second fields are arranged in an alternating manner similar to a chessboard. The disclosure further relates to a corresponding camera, in particular a light propagation time camera for a light propagation time camera system, and to a corresponding light propagation time camera system.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 23, 2021
    Assignee: PMDTECHNOLOGIES AG
    Inventor: Florian Sennhenn
  • Patent number: 11175390
    Abstract: Embodiments of the disclosure provide a system for analyzing noise data for light detection and ranging (LiDAR). The system includes a communication interface configured to sequentially receive noise data of the LiDAR in time windows, at least one storage device configured to store instructions, and at least one processor configured to execute the instructions to perform operations. Exemplary operations include determining an estimated noise value of a first time window using the noise data received in the first time window and determining an instant noise value of a second time window using the noise data received in the second time window. The second time window is immediately subsequent to the first time window. The operations also include determining an estimated noise value of the second time window by aggregating the estimated noise value of the first time window and the instant noise value of the second time window.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: November 16, 2021
    Assignee: BEIJING VOYAGER TECHNOLOGY CO., LTD.
    Inventors: Zhenghan Zhu, Yue Lu, Lingkai Kong, John Wu
  • Patent number: 11159755
    Abstract: A time-of-flight (TOF) sensor includes an array of pixels. Each pixel includes: a differential pixel configured to output a differential voltage signal between first and second nodes, based on an electrical modulation signal applied to different regions of the differential pixel and an incoming correlated light signal; a first readout circuit coupled to the first node; a second readout circuit coupled to the second node; and a compensation circuit coupled to the first and second readout circuits and configured to compensate for offset caused by incoming uncorrelated light. Each readout circuit has a storage device configured to be discharged by photo current during an exposure phase, sensed during a readout phase and recharged during a reset phase. Recharging of each storage device is controlled by a single reset transistor included in each compensation circuit or by one or more global reset transistors located outside the array of pixels.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: October 26, 2021
    Assignee: Infineon Technologies AG
    Inventors: Markus Dielacher, Martin Flatscher
  • Patent number: 11146036
    Abstract: A laser clock signal generator for controlling a laser beam generator to generate pulse laser radiation is provided. The laser clock signal generator includes a clock signal specification input arranged to receive an external clock specification signal, a basic clock signal generator configured to generate a basic clock signal based on the external clock specification signal and output the basic lock signal at a clock signal output to the laser beam generator, and a controller configured to control the basic clock generator, for example, to be synchronized with the external clock specification signal. The laser clock signal generator also includes an overclocking protector arranged between the basic clock generator and the clock signal output.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: October 12, 2021
    Assignee: TRUMPF LASER GMBH
    Inventors: Rainer Flaig, Christian Stolzenburg, Fred Stier, Daniel Moosmann
  • Patent number: 11137480
    Abstract: Methods and systems for performing multiple pulse LIDAR measurements are presented herein. In one aspect, each LIDAR measurement beam illuminates a location in a three dimensional environment with a sequence of multiple pulses of illumination light. Light reflected from the location is detected by a photosensitive detector of the LIDAR system during a measurement window having a duration that is greater than or equal to the time of flight of light from the LIDAR system out to the programmed range of the LIDAR system, and back. The pulses in a measurement pulse sequence can vary in magnitude and duration. Furthermore, the delay between pulses and the number of pulses in each measurement pulse sequence can also be varied. In some embodiments, the multi-pulse illumination beam is encoded and the return measurement pulse sequence is decoded to distinguish the measurement pulse sequence from exogenous signals.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: October 5, 2021
    Assignee: VELODYNE LIDAR USA, INC.
    Inventors: David S. Hall, Pieter J. Kerstens
  • Patent number: 11140340
    Abstract: A 3D camera uses a modulated visible light source for depth imaging and includes a processor operable to perform time multiplexing between image detection and depth or time-of-flight (ToF) detection using the same photodetectors. The camera can alternate between the image detection mode and the ToF detection mode to produce a continuous stream of color and depth images that can be overlaid without the need for any post-processing software. The camera is configured to determine time-of-flight using analog integration modules, thereby minimizing the circuitry necessary for analog-to-digital conversions and ToF calculations in the digital domain.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 5, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Pedram Lajevardi, Christoph Lang, Behnam Behroozpour, Ken Wojciechowski
  • Patent number: 11131773
    Abstract: Embodiments describe optical imagers that include one or more micro-optic components. Some imagers can be passive imagers that include a light detection system for receiving ambient light from a field. Some imagers can be active imagers that include a light emission system in addition to the light detection system. The light emission system can be configured to emit light into the field such that emitted light is reflected off surfaces of an object in the field and received by the light detection system. In some embodiments, the light detection system and/or the light emission system includes micro-optic components for improving operational performance.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: September 28, 2021
    Assignee: Ouster, Inc.
    Inventors: Angus Pacala, Mark Frichtl
  • Patent number: 11119198
    Abstract: A light-based detection system includes a light source configured to emit light as a series of one or more light pulses, a transmitter configured to direct the one or more light pulses toward a remote target located a distance from the system, a receiver configured to detect a light pulse scattered by the remote target, and a controller. The pulses are at a wavelength between approximately 1400 nanometers and approximately 1600 nanometers, with pulse duration between 10 picoseconds and 20 nanoseconds and a pulse energy less than 2 microjoules. The controller is configured to determine the distance from the system to the target based on a time of flight for the detected light pulse, detect a fault condition indicating that the distance to the target is less than a threshold distance, and shut down the light source in response to detecting the fault condition.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 14, 2021
    Assignee: Luminar, LLC
    Inventors: Scott R. Campbell, Jason M. Eichenholz
  • Patent number: 11119249
    Abstract: A portable weather station, including an lower body portion; an upper body portion disposed on the lower body portion in a spaced apart relationship thereby forming an open channel between the upper body portion and the lower body portion; and a plurality of weather condition sensors wherein a first set of one or more of the plurality of weather condition sensors is mounted on the upper body portion of the portable weather station and a second set of one or more of the plurality of weather condition sensors is mounted on the lower body portion of the portable weather station.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: September 14, 2021
    Assignee: INTELLISENSE SYSTEMS, INC.
    Inventors: Christopher Ulmer, Dmitry Starodubov, Gregory Peng, Rodion Tikhoplav, David Miller, Andrew Kostrzewski, Koyiro Minakata, Gabriel Kaplan, Tomasz Jannson, Edward Patton, Sookwang Ro, Ihor Berezhnyy
  • Patent number: 11119194
    Abstract: An emission lens shapes laser light from a laser light source. A scanning mirror changes its posture and reflects the laser light toward an outside. A scanning substrate controls the posture of the scanning mirror. A light receiving device on a light receiving substrate receives the light reflected on a target. A light receiving lens condenses the reflected light on the light receiving device. A housing houses the light source substrate, the emission lens, the scanning mirror, the scanning substrate, the light receiving substrate, and the light receiving lens. An innermost member is one of the emission lens, the scanning mirror, and the light receiving lens having an end portion on an innermost side of the housing in a depth direction. The light source substrate, the scanning substrate, and the light receiving substrate do not overlap with the innermost member in the depth direction of the housing.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: September 14, 2021
    Assignee: DENSO CORPORATION
    Inventor: Masashi Isono
  • Patent number: 11112503
    Abstract: A method of imaging a scene includes estimating multiple three-dimensional (3D) representations, each of which corresponds to a respective portion of the scene. Neighboring portions of the scene area are at least partially overlapping. Each 3D representation is estimated by illuminating the respective portion of the scene with a light burst including multiple light pulses, after which multiple point clouds are generated by detecting photons reflected or scattered from the respective portion of the scene using a focal plane array. Data points in the point clouds represent a distance between the focal plane array and a scene point in the respective portion of the scene. The 3D representation is then estimated based on the multiple point clouds via coincidence processing. The method then generates a 3D image of the scene based on the multiple 3D representations.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: September 7, 2021
    Assignee: Massachusetts Institute of Technology
    Inventors: Dale G. Fried, Jonathan P. Frechette
  • Patent number: 11105621
    Abstract: Measurement apparatuses and methods are disclosed for generating high-precision and -accuracy gas concentration maps that can be overlaid with 3D topographic images by rapidly scanning one or several modulated laser beams with a spatially-encoded transmitter over a scene to build-up imagery. Independent measurements of the topographic target distance and path-integrated gas concentration are combined to yield a map of the path-averaged concentration between the sensor and each point in the image. This type of image is particularly useful for finding localized regions of elevated (or anomalous) gas concentration making it ideal for large-area leak detection and quantification applications including: oil and gas pipeline monitoring, chemical processing facility monitoring, and environmental monitoring.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: August 31, 2021
    Assignee: Bridger Photonics, Inc.
    Inventors: Aaron Thomas Kreitinger, Michael James Thorpe
  • Patent number: 11105589
    Abstract: An automated weapon system is comprised a human transported weapon for use by a person, comprising a barrel movable within a stock, utilized for propelling a fired munition towards an area of sighting for the human transported weapon. A targeting subsystem identifies a chosen target in the area of sighting. A computational subsystem, responsive to the targeting subsystem, determines where the chosen target is, and determines where to aim the barrel so that the munitions will strike the chosen target. The barrel is movable within a stock, utilized for propelling a fired munition towards an area of sighting for the human transported weapon. A positioning means adjusts the aim of the barrel responsive to the computational subsystem. A firing subsystem, fires the munition at the chosen target responsive to the positioning means.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: August 31, 2021
    Inventors: Brett C. Bilbrey, David H. Sitrick
  • Patent number: 11105925
    Abstract: A light ranging system can include a laser device and an imaging device having photosensors. The laser device illuminates a scene with laser pulse radiation that reflects off of objects in the scene. The reflections can vary greatly depending on the reflecting surface shape and reflectivity. The signal measured by photosensors can be filtered with a number of matched filter designed according to profiles of different reflected signals. A best matched filter can be identified, and hence information about the reflecting surface and accurate ranging information can be obtained. The laser pulse radiation can be emitted in coded pulses by allowing weights to different detection intervals. Other enhancements include staggering laser pulses and changing an operational status of photodetectors of a pixel sensor, as well as efficient signal processing using a sensor chip that includes processing circuits and photosensors.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: August 31, 2021
    Assignee: OUSTER, INC.
    Inventors: Angus Pacala, Mark Frichtl
  • Patent number: 11092671
    Abstract: A lidar system includes a laser diode to provide a frequency modulated continuous wave (FMCW) signal, and a current source to provide a drive signal that modulates the laser diode. The current source is controlled to pre-distort the drive signal to provide a linear FMCW signal. The lidar system also includes a splitter to split the FMCW signal into an output signal and a local oscillator (LO) signal, a transmit coupler to transmit the output signal, a receive coupler to obtain a received signal based on reflection of the output signal by a target, and a combiner to combine the received signal with the LO signal into first and second combined signals. A first and second photodetector respectively receive the first and second combined signals and output first and second electrical signals from which a beat signal that indicates the pre-distortion needed for the drive signal is obtained.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: August 17, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Raymond Sarkissian, Keyvan Sayyah
  • Patent number: 11092691
    Abstract: A system including a beam steering device, includes a substrate, at least one light source disposed on the substrate and configured to irradiate at least one light beam, and optical phased arrays disposed on a same plane of the substrate and configured to adjust a direction of the at least one light beam that is irradiated, to output a first plurality of light beams to an object. Each of the optical phased arrays has a different view angle range. The system further includes light detecting elements configured to detect a second plurality of light beams that are reflected by the object to which the first plurality of light beams is output. The light detecting elements respectively correspond to the optical phased arrays.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Dongsik Shim
  • Patent number: 11092674
    Abstract: An optical transmitting system for distance measuring includes a signal generator, a laser diode coupled to the signal generator, and an optics device. The signal generator is configured to generate a first plurality of electrical signals. The laser diode is configured to generate a first plurality of optical waveforms that correspond with the first plurality of electrical signals. The optics device is configured to receive the first plurality of optical waveforms and direct the first plurality of optical waveforms toward a first plurality of scan points that form a scan region within a field of view (FOV). A first signal type, a first signal duration, a first signal amplitude, or a first signal repetition frequency of the first plurality of optical waveforms is based on a first desired range of the first plurality of scan points.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: August 17, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Nirmal C. Warke, David P. Magee, Baher S. Haroun
  • Patent number: 11085999
    Abstract: A method of measuring distance of a target by a pulse emitter and a matrix detector includes spatial mini-detectors coupled to capacitors whose duration of integration is controlled by a polarization of the mini-detectors.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: August 10, 2021
    Assignee: THALES
    Inventor: Pascal Rousseau
  • Patent number: 11086014
    Abstract: A ranging device provided with a light projecting unit for projecting a reference pulse set row including a main pulse and at least one sub pulse, a light receiving unit for receiving a reflected pulse set row obtained by reflection of the reference pulse set row by an object to be measured, and an identifying unit for identifying the reflected pulse set row corresponding to the reference pulse set row. The ranging device is further provided with a calculating unit for calculating a distance to the object to be measured on the basis of a delay time difference between the reference pulse set row and the reflected pulse set row corresponding to the reference pulse set row. The light projecting unit projects a plurality of reference pulse set rows having different pulse intervals.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: August 10, 2021
    Assignee: SONY CORPORATION
    Inventors: Takahiro Koyama, Toyoharu Oohata, Tomoki Ono
  • Patent number: 11086018
    Abstract: Various embodiments of the present invention are directed towards a system and methods for generating three dimensional (3D) images with increased composite vertical field of view and composite resolution for a spinning three-dimensional sensor, based on actuating the sensor to generate a plurality of sensor axis orientations as a function of rotation of the actuator. The output data from the sensor, such as a spinning LIDAR, is transformable as a function of the actuator angle to generate three dimensional imagery.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: August 10, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of Homeland Security
    Inventors: William T. Sutherland, John Bray
  • Patent number: 11086147
    Abstract: Techniques for providing eyewear with electrical components are disclosed. The electrical components can provide electrical technology to eyewear without having to substantially compromise aesthetic design principles of the eyewear. The electrical components can be partially or completely internal to eyewear. The electrical components can also be attached to the eyewear as an after-market enhancement. The electrical components can operate independently or together with other electrical components provided elsewhere. Apparatus for presenting after-market electrical components are also disclosed.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: August 10, 2021
    Assignee: IngenioSpec, LLC
    Inventors: Thomas A. Howell, David Chao, C. Douglass Thomas, Peter P. Tong
  • Patent number: 11079480
    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.
    Type: Grant
    Filed: December 29, 2018
    Date of Patent: August 3, 2021
    Assignee: GM CRUISE HOLDINGS LLC
    Inventor: Lutfollah Maleki
  • Patent number: 11079312
    Abstract: An example forward scatter sensor comprises: a transmitter arranged to emit a single light sheet; a receiver to observe light scattered from particles that fall through a measurement volume; and a control entity comprising an analyzer arranged to record a measurement signal descriptive of intensity of light captured by the receiver as a function of time and to carry out a precipitation analysis on basis of a time segment of the measurement signal, the precipitation analysis comprising: identifying, in said time segment, one or more double peaks that each represent a respective droplet and comprise a first peak that represents light refracted from a bottom of the respective droplet upon entry to the measurement volume and a second peak that represents light reflected from a top of the respective droplet upon exit from the measurement volume; and deriving one or more precipitation parameters and one or more precipitation indications.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: August 3, 2021
    Assignee: Vaisala Oyj
    Inventors: Klaus Heyn, Jan Lönnqvist, Jukka Kallio
  • Patent number: 11079541
    Abstract: An optical deflection device that achieve both high beam quality and wide angular range of deflection and compatibility with an optical integration technology of silicon photonics. The optical deflection device is a silicon photonics device including a periodic structure of a refractive index. The optical deflection device includes two configurations, which are (1) a configuration in which an optical propagation part where light propagates is a microstructure formed on silicon, and (2) a configuration in which the microstructure constituting the optical propagation part includes a periodic structure that generates slow light and a periodic structure that radiates light. The microstructure formed on the silicon of (1) makes it possible to employ the optical integration technology of silicon photonics and form the optical deflection device. The two periodic structures of (2) make it possible to form a light beam with high beam quality and a wide angular range of deflection.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: August 3, 2021
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Toshihiko Baba, Fumio Koyama
  • Patent number: 11073603
    Abstract: A coherent lidar system, a method of operating the coherent lidar system and a vehicle including the coherent lidar system involve a beam steering device to direct output light from the system within a field of view. A first series of positions of the beam steering device defines a first scan pattern within the field of view and a second series of positions of the beam steering device defines a second scan pattern within the field of view. The coherent lidar system includes a controller to provide transition positions to the beam steering device to transition the beam steering device from the first scan pattern to the second scan pattern. The transition positions follow a basis spline (B-spline) function.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: July 27, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Scott Singer
  • Patent number: 11073617
    Abstract: Methods and systems for performing three dimensional LIDAR measurements with a highly integrated LIDAR measurement device are described herein. In one aspect, the illumination source, detector, and illumination driver are integrated onto a single printed circuit board. In addition, in some embodiments, the associated control and signal conditioning electronics are also integrated onto the common printed circuit board. Furthermore, in some embodiments, the illumination driver and the illumination source are integrated onto a common Gallium Nitride substrate that is independently packaged and attached to the printed circuit board. In another aspect, the illumination light emitted from the illumination source and the return light directed toward the detector share a common optical path within the integrated LIDAR measurement device. In some embodiments, the return light is separated from the illumination light by a beam splitter.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: July 27, 2021
    Assignee: VELODYNE LIDAR USA, INC.
    Inventors: David S. Hall, Pieter J. Kerstens, Mathew Noel Rekow
  • Patent number: 11073614
    Abstract: A LIDAR sensor for detecting an object within a sampling space, includes a sampling unit that includes a magnetic channel, a guide element, and a movable component that is situated within the magnetic channel and is movable along the guide element under control of a control method that uses a linear drive.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: July 27, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Annemarie Holleczek, Jan Sparbert
  • Patent number: 11067675
    Abstract: A time of flight imaging apparatus includes a plurality of sensor pixels configured to receive an external light signal modulated with an external modulation frequency. The time of flight imaging apparatus further includes pixel circuitry configured to generate a sensor pixels output signal based on the external light signal and a reference signal having a reference frequency. The sensor pixels output signal has a frequency depending on a difference between the external modulation frequency and the reference frequency. The time of flight imaging apparatus further includes synchronization circuitry configured to adjust the reference frequency of the reference signal based on the sensor pixels output signal.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: July 20, 2021
    Inventors: Hannes Plank, Norbert Druml, Armin Schoenlieb
  • Patent number: 11067367
    Abstract: Communication method and system for bidirectional data transfer among smart modules (101-111) attachable to a weapon (100), where messages are encoded by modulating an electric supply provided by at least one powered rail (200, 200?, 200?, 200??). At least two priority levels are defined among smart modules supplied by the powered rail (200, 200?, 200?, 200??). High-priority smart modules (600) are allowed to transmit high-priority data message (741) directly; whereas low-priority smart modules (500) are required to transmit a data transfer request message (723) and wait for a data transfer permission message (731), which is only sent when no high-priority data message (741) is being received.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: July 20, 2021
    Assignee: RADE TECNOLOGÍAS, S.L.
    Inventors: Raúl Delgado Acarreta, Rubén Robles Pérez, Diego Bernal Somavilla, José Cuesta Álvarez, Daniel Osuna Sanz, Eduardo Santesteban de la Concepción
  • Patent number: 11067670
    Abstract: A lidar system includes a photonic chip including a light source and a transmit beam coupler to provide an output signal for transmission. The output signal is a frequency modulated continuous wave (FMCW) signal. A transmit beam steering device transmits the output signal from the transmit beam coupler of the photonic chip. A receive beam steering device obtains a reflection of the output signal by a target and provides the reflection as a received signal to a receive beam coupler of the photonic chip. The photonic chip, the transmit beam steering device, and the receive beam steering device are heterogeneously integrated into an optical engine.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: July 20, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Pamela R. Patterson, Biqin Huang, James H. Schaffner, Keyvan Sayyah, Oleg Efimov, Raymond Sarkissian
  • Patent number: 11067674
    Abstract: Described are a device for determining a distance to an object, having a transmitting device for emitting signals, a receiving device for receiving signals and for generating detection signals, an evaluating device for evaluating the detection signals of the receiving device, and a control device for controlling the evaluation of the detection signals, and a corresponding method. The receiving device has a plurality of receiving elements which generate, in case they receive a signal, a detection signal each. The evaluating device determines the distance to the object in accordance with the time-of-flight method and while considering coincidence events and uses that case in which a number of detection signals generated within a presettable coincidence time at least equals a presettable coincidence depth, as a coincidence events.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: July 20, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Olaf Schrey, Maik Beer, Werner Brockherde, Bedrich Hosticka, Alexander Schwinger, David Arutinov
  • Patent number: 11061126
    Abstract: A system and a method that enable two or more dispersed platforms to simultaneously use respective frequency-modulated continuous-wave radar systems in a typical radar application such as synthetic-aperture radar for terrain mapping, moving-target indicator radar to track targets on the ground and air-to-air tracking of other aircraft. The systems use the same RF spectrum in their operation and also communicate through their respective radar systems while simultaneously reducing their interplatform interference through the use of both filters and coded waveforms.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: July 13, 2021
    Assignee: The Boeing Company
    Inventor: Gary A. Ray
  • Patent number: 11061139
    Abstract: A ranging sensor includes a light emitting unit includes a plurality of light emitting elements, a light receiving unit including a plurality of light receiving elements, a space control unit, a position estimation unit, and a TOF signal processing unit, operates in cooperation with an RGB camera module, and generates target distance information for generating three-dimensional position information. The space control unit independently controls each element group including a light emitting element and a light receiving element allocated to a common subspace. The position estimation unit estimates, from received light amount distribution of a plurality of light receiving elements receiving a reflected light beam from the target existing in a space of each subspace, a position of the target in the space of the subspace group. The TOF signal processing unit performs TOF signal processing in parallel with channels whose number is less than that of light emitting elements.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: July 13, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideki Sato, Takuma Hiramatsu, Takayuki Shimizu, Yoshiki Ikuta
  • Patent number: 11059478
    Abstract: An automotive vehicle includes at least one actuator configured to control vehicle steering, acceleration, or shifting, at least one sensor configured to emit a signal having a first encoding scheme and receive a return signal, and at least one controller in communication with the actuator and the sensor. The controller is configured to control the actuator according to a first mode and a second mode. The controller is further configured to, in response to the sensor receiving a return signal having the first encoding scheme, control the actuator according to the first mode and, in response to the sensor receiving a return signal not having the first encoding scheme, control the actuator according to the second mode.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: July 13, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Robert D. Sims, III, Brian J. Hufnagel
  • Patent number: 11061121
    Abstract: A 3D-camera device (1) comprising a Time-Of-Flight sensor (5) and a light guide (4) with a light transparent cover (3). A light source (6) is arranged to emit light (7) into the transparent cover (3), whereby at least a portion (10) of the emitted light (7) is reflected out through a second portion (3.1) of the transparent cover (3) by dirt (100) present on the outer surface (3.20) of the transparent cover (3). The Time-Of-Flight sensor (5) is arranged to receive light (10) reflected by dirt (100) on the outer surface (3.20) of the transparent cover (3) and to output a signal (L) relative the amount of received reflected light (10). A control unit (20) configured to determine the presence of dirt (100) on the outer surface (3.20) of the transparent cover (3) from the magnitude of the signal (L) from the Time-Of-Flight sensor (5).
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: July 13, 2021
    Assignee: VEONEER SWEDEN AB
    Inventors: Rickard Astrom, Evelina Eriksson, Jonas Wihlbeck, Hallstig Emil
  • Patent number: 11054505
    Abstract: Systems and methods are described that relate to a light detection and ranging (LIDAR) device. The LIDAR device includes a fiber laser configured to emit light within a wavelength range, a scanning portion configured to direct the emitted light in a reciprocating manner about a first axis, and a plurality of detectors configured to sense light within the wavelength range. The device additionally includes a controller configured to receive target information, which may be indicative of an object, a position, a location, or an angle range. In response to receiving the target information, the controller may cause the rotational mount to rotate so as to adjust a pointing direction of the LIDAR. The controller is further configured to cause the LIDAR to scan a field-of-view (FOV) of the environment. The controller may determine a three-dimensional (3D) representation of the environment based on data from scanning the FOV.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: July 6, 2021
    Assignee: Waymo LLC
    Inventors: Pierre-yves Droz, Gaetan Pennecot, Anthony Levandowski, Drew Eugene Ulrich, Zach Morriss, Luke Wachter, Dorel Ionut Iordache, William McCann, Daniel Gruver, Bernard Fidric, Samuel William Lenius
  • Patent number: RE48747
    Abstract: An application processing unit executes an application that is performed as a notification device mounted in a vehicle. In the application processing unit, an input unit acquires information indicating that the vehicle is receiving driving assistance. In the application processing unit, an output unit outputs notifications to other vehicles in accordance with the information that has been acquired at the input unit.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: September 21, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Toshio Nakakuki, Takao Mizuguchi