Of Pulse Transit Time Patents (Class 356/5.01)
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Patent number: 10551164Abstract: A technique for acquiring target's coordinates for industrial dimensional metrology involves a target that serves both as a 2D contrast target and a 3D contact target, and a metrology tool. The target has proximal and distal surfaces, at least some of which being primarily flat and facing a common normal direction. At least 3 mm separate the proximal and distal surfaces in the normal direction. Reflectivity factors of the distal and proximal surfaces differ by at least 20%. Risers connecting pairs of the proximal and distal surfaces are sufficiently undercut so that none of the risers are in view at nominal viewing angles. At least two reference edges are defined where risers meet proximal surfaces. The tool has meeting features for registration with the edges and primarily flat surfaces, in at least two registered positions, to permit a retroreflector of the tool to acquire coordinates the target centre.Type: GrantFiled: August 16, 2017Date of Patent: February 4, 2020Assignee: National Research Council of CanadaInventors: Luc Cournoyer, Michel Picard
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Patent number: 10535161Abstract: A decoding device, an encoding device and a method for point cloud decoding is disclosed. The method includes receiving a compressed bitstream. The method also includes decoding the compressed bitstream into 2-D frames that represent a 3-D point cloud. Each of the 2-D frames including a set of patches, and each patch includes a cluster of points of the 3-D point cloud. The cluster of points corresponds to an attribute associated with the 3-D point cloud. One patch of the set of patches, the set of patches, and the 2-D frames correspond to respective access levels representing the 3-D point cloud. The method also includes identifying a first and a second flag. In response to identifying the first and the second flag, the method includes reading the metadata from the bitstream. The method further includes generating, based on metadata and using the sets of 2-D frames, the 3-D point cloud.Type: GrantFiled: November 6, 2018Date of Patent: January 14, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Madhukar Budagavi, Esmaeil Faramarzi, Rajan Joshi, Hossein Najaf-Zadeh
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Patent number: 10534075Abstract: The invention provides a three-dimensional surveying instrument, which comprises a light emitter for emitting a distance measuring light, a light projecting optical unit for irradiating a distance measuring light from the light emitter along a distance measuring optical axis, a light receiving optical unit for receiving a reflection light from an object to be measured, a photodetection element for converting the reflection light as focused at the light receiving optical unit to an electric signal, a scanning unit for scanning a distance measuring light with respect to the object to be measured provided on a frame unit, angle detecting units for detecting an irradiating direction of the distance measuring light as scanned by the scanning unit, a vibration detecting unit for detecting vibration amount of the frame unit, and a control arithmetic unit having a storage unit where a threshold value is stored, wherein the control arithmetic unit controls so that the number of rotations of the scanning unit is graduaType: GrantFiled: April 13, 2016Date of Patent: January 14, 2020Assignee: TOPCON CorporationInventors: Hideyuki Matsumoto, Yasushi Tanaka, Shoji Hayashi, Takaaki Saito
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Patent number: 10521921Abstract: An apparatus includes time of flight single-photon avalanche diode (ToF SPAD) circuitry. The ToF SPAD circuitry generates indications of distance between the apparatus and an object within a field of view. A processor receives the indications of distance and controls at least one image sensor, such as a camera, to capture at least one image based on at least one indication of distance. The processor determines whether an image is a true representation of an expected object by comparing multiple indications of distance associated with the object to an expected object distance profile and comparing the image to at least one expected object image.Type: GrantFiled: March 31, 2017Date of Patent: December 31, 2019Assignees: STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED, STMICROELECTRONICS, INC.Inventors: Xiaoyong Yang, Neale Dutton
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Patent number: 10514447Abstract: A method for propagation time calibration of a LIDAR sensor which includes a pulsed light source, a detector surface with a plurality of optoelectronic elements for receiving light pulses of the light source reflected on objects and for converting these light pulses into electronic signals, and an electronic evaluation circuit for detecting the light pulses and for measuring the propagation times thereof. In the method, the measured propagation times are corrected with respect to the propagation times of the electronic signals in the evaluation circuit by decoupling, for at least some of the light pulses, a portion of the light, using a beam splitter at the light source, and using detection times of the decoupled light pulses as a time reference. The detector surface is illuminated with the decoupled light via a light-scattering system and used for detecting the decoupled light pulses.Type: GrantFiled: September 14, 2016Date of Patent: December 24, 2019Assignee: Robert Bosch GmbHInventor: Hans-Jochen Schwarz
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Patent number: 10509109Abstract: An optoelectronic sensor (10) for detecting an object in a monitoring area (20), the sensor (10) having at least one light transmitter (22) for transmitting a plurality of mutually separated light beams (26), a light receiver (34) with a plurality of light receiving elements (34a) for generating a respective reception signal from the remitted light beams (30) remitted by the objects, a receiving optics (32) arranged in front of the light receiver (34) and an evaluation unit (46) for obtaining information about the object from the reception signals, wherein at least some of the light receiving elements (34a) have a mutual offset in a direction perpendicular to their receiving surface.Type: GrantFiled: December 13, 2016Date of Patent: December 17, 2019Assignee: SICK AGInventors: Hartmut Gimpel, Sebastian Tschuch, Roger Buser
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Patent number: 10497818Abstract: A semiconductor substrate has a first surface and a second surface which is opposite to the first surface. A photoelectric conversion portion has a PN junction configured with first and second semiconductor regions of different conductivity types. A buried portion is buried in the semiconductor substrate and includes an electrode and a dielectric member located between the electrode and the semiconductor substrate and in contact with the second semiconductor region. The second semiconductor region is located in a position deeper than the first semiconductor region. The buried portion is located to extend from a first surface to a position deeper than the first semiconductor region. Electric potentials are supplied to the first semiconductor region, the second semiconductor region, and the electrode in such a manner that an inversion layer occurring between the electrode and the second semiconductor region and the first semiconductor region are in contact with each other.Type: GrantFiled: July 21, 2017Date of Patent: December 3, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Kazuhiro Morimoto, Hajime Ikeda, Junji Iwata
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Patent number: 10488495Abstract: In one general aspect, a non-transitory computer-readable storage medium storing instructions that when executed cause one or more processors to perform a process. The process can include producing emitted electromagnetic radiation based on a frequency pattern and receiving reflected electromagnetic radiation reflected from an object. The process can include defining combined frequency data based on a frequency of the emitted electromagnetic radiation and a frequency of the reflected electromagnetic radiation. The process can also include defining a set of spectral bins, based on a Fourier transform, in a frequency domain based on the combined frequency data, and can include identifying a subset of the set of spectral bins.Type: GrantFiled: December 22, 2017Date of Patent: November 26, 2019Assignee: DSCG Solutions, Inc.Inventors: Richard Sebastian, Kendall Belsley
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Patent number: 10488499Abstract: A time-of-flight detection pixel includes a photosensitive area including a first doped layer and a charge collection area extending in the first doped layer. At least two charge storage areas extend from the charge collection area, each including a first well more heavily doped than the charge collection area and separated from the charge collection area by a first portion of the first doped layer which is coated with a gate. Each charge storage area is laterally delimited by two insulated conductive electrodes, extending parallel to each other and facing each other. A second heavily doped layer of opposite conductivity coats the pixel except for at each portion of the first doped layer coated with the gate.Type: GrantFiled: December 22, 2016Date of Patent: November 26, 2019Assignees: STMicroelectronics (Crolles 2) SAS, Commissariat A L'Energie Atomique et aux Energies AlternativesInventors: Francois Roy, Marie Guillon, Yvon Cazaux, Boris Rodrigues, Alexis Rochas
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Patent number: 10483313Abstract: There is provided a solid-state image sensor including a semiconductor substrate in which a plurality of pixels are arranged, and a wiring layer stacked on the semiconductor substrate and formed in such a manner that a plurality of conductor layers having a plurality of wirings are buried in an insulation film. In the wiring layer, wirings connected to the pixels are formed of two conductor layers.Type: GrantFiled: May 16, 2018Date of Patent: November 19, 2019Assignee: Sony CorporationInventor: Toshifumi Wakano
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Patent number: 10481271Abstract: An automotive lighting system for a vehicle includes a taillight disposed at a vehicle equipped with an external object detection system. The taillight includes a housing that contains a light source that is operable to illuminate at least rearward of the equipped vehicle. The external object detection system includes a LIDAR sensor that is disposed in the housing of the taillight. The LIDAR sensor is operable to emit optical signals at least rearward of the equipped vehicle, where optical signals reflected back to the LIDAR sensor are processed by an electronic control unit of the external object detection system. Processing of reflected optical signals by the electronic control unit detects an object present exterior of the equipped vehicle. Also, processing by the electronic control unit may include use of 3D imaging techniques to generate a 3D image of the object present exterior of the equipped vehicle.Type: GrantFiled: October 9, 2017Date of Patent: November 19, 2019Assignee: MAGNA ELECTRONICS SOLUTIONS GMBHInventor: Stefan Graf
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Patent number: 10481264Abstract: An object is to provide a laser processing device and a laser processing system capable of measuring a distance between a work and a processing head accurately and simply and capable of checking the quality of processing in real time during the processing. Provided are: a photodetector that detects the intensity of a processing laser beam split by optical path splitting means, and outputs a detection signal having a signal intensity responsive to the detected intensity together with a time of detection of the intensity; a signal intensity comparing unit that compares the signal intensities of multiple detection signals received from the photodetector; and a detection time comparing unit that compares times of detection of multiple intensities.Type: GrantFiled: July 6, 2017Date of Patent: November 19, 2019Assignee: FANUC CORPORATIONInventor: Yoshinori Murakami
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Patent number: 10473921Abstract: A system to scan a field of view with light beams can include a scanning mirror arrangement having a mirror and a drive mechanism configured to rotate the mirror about an axis between two terminal positions; at least one light source configured to simultaneously produce at least a first light beam and a second light beam directed at the mirror from different directions. Upon rotation of the mirror, the first and second light beams can scan a field of view. Another example of a scanning mirror arrangement includes a mirror; hinges attached at opposite sides of the mirror; and a drive mechanism attached to the hinges and configured to twist the hinges resulting in a larger twist to the mirror, wherein the hinges are disposed between the drive mechanism and the mirror.Type: GrantFiled: May 10, 2018Date of Patent: November 12, 2019Inventor: Gerard Dirk Smits
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Patent number: 10466343Abstract: Techniques are provided for implementing a system that can perform a range estimation of a target object at power levels both below and above an pre-defined power threshold. In embodiments, the system first performs a lower-power measurement, which may be sufficient to estimate the range to the object. If the low-power measurement is unsuccessful, the system then performs a fault check to ensure proper operation of the device. If the fault check is passed, the system may then perform a high-power measurement of the range to the object. Results may be provided to a user by a visual display.Type: GrantFiled: May 17, 2017Date of Patent: November 5, 2019Assignee: Garmin Switzerland GmbHInventor: Robert A. Lewis
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Patent number: 10453272Abstract: A technique includes determining a depth value for each of a plurality of pixels of a frame, down-sampling the depth values of a tile of the frame to obtain a plurality of down-sampled depth values, the frame including one or more tiles, determining a change in a head pose, determining, from the plurality of down-sampled depth values, a down-sampled depth value for a vertex, determining an adjusted position for the vertex based on the change in head pose and the down-sampled depth value for the vertex, performing, based on at least the adjusted position for the vertex, a depth-adjusted time-warping of the frame to obtain a depth-adjusted time-warped frame, and triggering display of the depth-adjusted time-warped frame.Type: GrantFiled: May 26, 2017Date of Patent: October 22, 2019Assignee: Google LLCInventor: John Paul Bates
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Patent number: 10451740Abstract: A lidar system includes a laser source, a photodetector, an emission lens, a receiving lens, and a processor. The laser source is configured to be translated through a plurality of emission locations, and to emit a plurality of laser pulses therefrom. The emission lens is configured to collimate and direct the plurality of laser pulses towards an object. The receiving lens is configured to focus the portion of each of the plurality of laser pulses reflected off of the object to a plurality of detection locations. The photodetector is configured to be translated through the plurality of detection locations, and to detect the portion of each of the plurality of laser pulses. The processor is configured to determine a time of flight for each of the plurality of laser pulses from emission to detection, and construct a three-dimensional image of the object based on the determined time of flight.Type: GrantFiled: September 16, 2016Date of Patent: October 22, 2019Assignee: CEPTON TECHNOLOGIES, INC.Inventors: Jun Pei, Mark McCord, Jun Ye
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Patent number: 10451715Abstract: Embodiments of the present disclosure use an “on chip” silicon LED to generate a light signal for calibration of a range finder. The light signal from the silicon LED may be detected by photo detectors in a reference path and a receive path of the range finder to generate a calibration phase offset, which may be subtracted out from a phase offset measurement of the range finder to correct the phase offset measurement for component mismatch due to, for example, environment, process variation, aging, etc.Type: GrantFiled: March 14, 2017Date of Patent: October 22, 2019Assignee: PLETHRON INC.Inventor: Charles Chu
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Patent number: 10444330Abstract: A laser receiver comprising a sensor; a first amplifier operatively connected to the sensor comprising a first gate, a first source and a first drain; a first subcircuit operatively connected between the first drain and the first gate comprising a first resistor, a first inductor and a decoupling capacitor configured to allow the first amplifier bias to be established by the at least one first biasing resistor; the impedance of the first gate being sufficient such that only a small proportion of the current from the sensor passes into the first gate; an inductor connecting the first gate to the at least one biasing resistor with high impedance at the receiver operating frequency; a second amplifier comprising a second gate operatively connected to the first drain; and an output configured to be operatively connected to a processing unit and a display unit configured to displaying output and method thereof.Type: GrantFiled: November 1, 2016Date of Patent: October 15, 2019Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Barry Lee Stann, Mark Michael Giza
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Patent number: 10425628Abstract: Time-of-flight (ToF) 3D depth sensors are used virtual and augmented reality (VR/AR) due to their light weight, small form factor, low computation cost and high depth quality. Phase based ToF sensors can provide depth maps with reasonable resolutions (VGA or equivalent) at adequate framerates for traditional 3D sensing applications such as video surveillance, surface reconstruction, gesture recognition and skeleton tracking. Recently, more sophisticated input methods, such as articulated hand tracking, require substantially higher frame rates. Traditionally increasing the frame rate increases the sensor and compute power proportionally to the increased number of frames/second. However, wireless, wearable devices, have limited power capacity. The teachings of this disclosure enable a 2× increase in frame rate without increase to the camera power consumption, and with only modest increases in the computational load.Type: GrantFiled: February 1, 2017Date of Patent: September 24, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Raymond Kirk Price, Michael Bleyer, Denis Demandolx, Jian Zhao
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Patent number: 10416296Abstract: A three-dimensional image 3DI system includes a modulator configured to generate a first modulation signal and a second modulation signal having a predetermined frequency difference, an illumination source configured to generate a light signal modulated by the first modulation signal, and a sensor core including a pixel array modulated by the second modulation signal. At least one pixel of the pixel array is configured to receive a reflected modulated light signal and to demodulate the reflected modulated light signal using the second modulation signal during an image acquisition to generate a measurement signal. The at least one pixel is configured to generate a plurality of measurement signals based on a plurality of image acquisitions taken at different sample times. A controller is configured to receive the plurality of measurement signals, and calibrate the at least one pixel of the pixel array based on the plurality of measurement signals.Type: GrantFiled: October 19, 2016Date of Patent: September 17, 2019Assignee: Infineon Technologies AGInventor: Thomas Thurner
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Patent number: 10418407Abstract: A circuit, including: a photodetector including a first readout terminal and a second readout terminal different than the first readout terminal; a first readout circuit coupled with the first readout terminal and configured to output a first readout voltage; a second readout circuit coupled with the second readout terminal and configured to output a second readout voltage; and a common-mode analog-to-digital converter (ADC) including: a first input terminal coupled with a first voltage source; a second input terminal coupled with a common-mode generator, the common-mode generator configured to receive the first readout voltage and the second readout voltage, and to generate a common-mode voltage between the first and second readout voltages; and a first output terminal configured to output a first output signal corresponding to a magnitude of a current generated by the photodetector.Type: GrantFiled: April 3, 2018Date of Patent: September 17, 2019Assignee: Artilux, Inc.Inventors: Yun-Chung Na, Che-Fu Liang, Shu-Lu Chen, Szu-Lin Cheng, Han-Din Liu, Chien-Lung Chen, Yuan-Fu Lyu, Chieh-Ting Lin, Bo-Jiun Chen, Hui-Wen Chen, Shu-Wei Chu, Chung-Chih Lin, Kuan-Chen Chu
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Patent number: 10401481Abstract: A lidar system includes a light source configured to emit light, a scanner configured to scan a field of regard of the lidar system using (i) a first output beam that includes at least a portion of the emitted light and has a first amount of power and (ii) a second output beam that includes at least a portion of the emitted light and has a second amount of power different from the first amount of power, with an angular separation between the first output beam and the second output beam along a vertical dimension of the field of regard, and a receiver configured to detect light associated with the first output beam and light associated with the second output beam scattered by one or more remote targets.Type: GrantFiled: March 30, 2018Date of Patent: September 3, 2019Assignee: Luminar Technologies, Inc.Inventors: Scott R. Campbell, Matthew D. Weed, Lane A. Martin, Jason M. Eichenholz
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Patent number: 10386467Abstract: Disclosed herein are a number of example embodiments that employ controllable delays between successive ladar pulses in order to discriminate between “own” ladar pulse reflections and “interfering” ladar pulses reflections by a receiver. Example embodiments include designs where a sparse delay sum circuit is used at the receiver and where a funnel filter is used at the receiver. Also, disclosed are techniques for selecting codes to use for the controllable delays as well as techniques for identifying and tracking interfering ladar pulses and their corresponding delay codes. The use of a ladar system with pulse deconfliction is also disclosed as part of an optical data communication system.Type: GrantFiled: February 14, 2018Date of Patent: August 20, 2019Assignee: AEYE, INC.Inventors: Luis Carlos Dussan, Allan Steinhardt
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Patent number: 10386486Abstract: A time-of-flight 3D imaging system includes a light source having a plurality of P-N junctions in electrical series, an imaging sensor, and a time measurement device configured to measure the elapsed time-of-flight between a pulse of output light being emitted from the plurality of P-N junctions in series and incoming light including the pulse of output light being detected at the imaging sensor.Type: GrantFiled: June 21, 2016Date of Patent: August 20, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Raymond Kirk Price, Ravi Kiran Nalla
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Patent number: 10379205Abstract: Disclosed herein are a number of example embodiments that employ controllable delays between successive ladar pulses in order to discriminate between “own” ladar pulse reflections and “interfering” ladar pulses reflections by a receiver. Example embodiments include designs where a sparse delay sum circuit is used at the receiver and where a funnel filter is used at the receiver. Also, disclosed are techniques for selecting codes to use for the controllable delays as well as techniques for identifying and tracking interfering ladar pulses and their corresponding delay codes. The use of a ladar system with pulse deconfliction is also disclosed as part of an optical data communication system.Type: GrantFiled: February 14, 2018Date of Patent: August 13, 2019Assignee: AEYE, INC.Inventors: Luis Carlos Dussan, Allan Steinhardt
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Patent number: 10382736Abstract: A three-dimensional image system includes a modulator configured to generate a first and a second modulation signal having a predetermined frequency difference, an illumination source configured to generate a light signal modulated by the first modulation signal, and a pixel array modulated by the second modulation signal. At least one pixel of the pixel array is configured to receive a reflected modulated light signal and generate a plurality of measurement signals based on a plurality of image acquisitions taken at different acquisition times. A controller is configured to control a phase difference between the first modulation signal and the second modulation signal by setting the first modulation frequency and the second modulation frequency to have a predetermined frequency difference greater than zero; and calculate a depth of the object based on the plurality of measurement signals, the depth being a distance from the 3DI system to the object.Type: GrantFiled: February 9, 2018Date of Patent: August 13, 2019Assignee: Infineon Technologies AGInventor: Thomas Thurner
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Patent number: 10372138Abstract: A vehicular collision avoidance system comprising a system controller, pulsed laser transmitter, a number of independent ladar sensor units, a cabling infrastructure, internal memory, a scene processor, and a data communications port is presented herein. The described invention is capable of developing a 3-D scene, and object data for targets within the scene, from multiple ladar sensor units coupled to centralized LADAR-based Collision Avoidance System (CAS). Key LADAR elements are embedded within standard headlamp and taillight assemblies. Articulating LADAR sensors cover terrain coming into view around a curve, at the crest of a hill, or at the bottom of a dip. A central laser transmitter may be split into multiple optical outputs and guided through fibers to illuminate portions of the 360° field of view surrounding the vehicle. These fibers may also serve as amplifiers to increase the optical intensity provided by a single master laser.Type: GrantFiled: August 4, 2017Date of Patent: August 6, 2019Assignee: Continental Advanced Lidar Solutions US, LLCInventors: Patrick Gilliland, Roger Stettner, Laurent Heuhebaert, Bart M Goldstein
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Patent number: 10354448Abstract: Methods and systems for detecting optical components are disclosed. An optical signal comprising a plurality of light pulses is transmitted by a laser into a field of view (FOV) of a detector at a pulse repetition rate. A scene within the FOV is depicted to an eyepiece. The detector receives a plurality of reflected light pulses of the optical signal from a location within the scene during a first integration time period of the detector. At least one element of a display that is registered to the FOV is altered based on the plurality of reflected light pulses.Type: GrantFiled: February 11, 2014Date of Patent: July 16, 2019Assignee: Lockheed Martin CorporationInventors: Bruno J. Evans, Gary P. Perryman, Douglas E. Pasquan
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Patent number: 10355785Abstract: Systems and methods are provided for non-uniform optical sampling with wider optical bandwidth and lower timing jitter than conventional systems, which can make non-uniform optical sampling more feasible. Embodiments of the present disclosure further provide systems and methods for determining all input signal frequencies, including those left ambiguous by prior methods.Type: GrantFiled: June 22, 2018Date of Patent: July 16, 2019Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Ross Schermer, Jason D. McKinney
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Patent number: 10345619Abstract: Thinned, flexible surface regions upon which flexible active components may be utilized to attach flexible active components in space/volume constrained devices, for example, a powered ophthalmic device. Thinned, flexible surface regions foster an avenue for enhanced functionality because various electronic circuits and components can be integrated into polymeric structures.Type: GrantFiled: March 19, 2015Date of Patent: July 9, 2019Assignee: Johnson & Johnson Vision Care, Inc.Inventors: Adam Toner, James Daniel Riall, Sharika Snook, Dawn Jamisha Owens, Marina Archer
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Object detecting apparatus, object detecting method, and design method of object detecting apparatus
Patent number: 10324184Abstract: An object detecting apparatus is provided with: a lens assembly that converts laser light emitted by plural light-emitting points to a laser beam having a divergence angle in an arrangement direction of plural light-emitting points; and an optical assembly that projects the laser beam outward along an optical axis and guides an incident light toward a light-receiving element along the optical axis. The optical assembly is provided with a collective lens that forms an image of the incident light on a focal plane and an aperture located on the focal plane. The aperture satisfies ???, where ? is the divergence angle along the arrangement direction of plural light-emitting points, D is a size of a light passing region of the aperture in a direction corresponding to the divergence angle, d is a distance between the collective lens and the aperture, and ?=arctan(D/d).Type: GrantFiled: December 14, 2018Date of Patent: June 18, 2019Assignee: DOLPHIN CO., LTD.Inventor: Zhihui Duan -
Patent number: 10317530Abstract: A laser range finding apparatus includes a light emitting section that emits a laser light, a light receiving section that receives the reflected laser light from a detection object, the light receiving section including a plurality of photo detectors for respectively receiving a plurality of different transmission wavelength bands of the laser light, an identifying section that identifies each of the photo detectors each of whose output indicating signal waveforms of the received reflected laser light is not saturated as an unsaturated photo detector, and a distance calculating section that calculates a distance to the detection object based on a light detection timing at which the reflected laser light is received by the unsaturated photo detector.Type: GrantFiled: June 22, 2016Date of Patent: June 11, 2019Assignee: DENSO CORPORATIONInventor: Chihiro Moriguchi
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Patent number: 10302766Abstract: A range imaging system includes: a control unit that generates a light emission signal for instructing light irradiation and an exposure signal for instructing exposure; a pulsed-light source unit that emits pulsed light in response to the light emission signal; an imaging unit that includes a solid-state imaging device and performs exposure and imaging in response to the exposure signal; and a calculation unit that calculates range information. The solid-state imaging device includes a first pixel for receiving radiant light from a subject and a second pixel for receiving reflected light of the pulsed light. The calculation unit calculates the range information using an image capture signal from the first pixel and an imaging signal from the second pixel.Type: GrantFiled: May 16, 2016Date of Patent: May 28, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Junji Ito
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System and method for optical and laser-based counter intelligence, surveillance, and reconnaissance
Patent number: 10291878Abstract: Systems and methods for preventing image capture and exploitation by optically transmitting a disruptive effect to a digital imaging system. The disruptive effect interferes with the algorithms used to compress and analyze digital images and can be used to disable the imaging equipment or inject foreign code into the imaging system or image processing computer.Type: GrantFiled: May 27, 2016Date of Patent: May 14, 2019Assignee: SELEX GALILEO INC.Inventors: Matthew Keegan, Mark McElhinney, Jean Michel Maillard -
Patent number: 10281916Abstract: A method, device, and system for detecting transparent elements in a vehicle environment are described. In some examples, this may include accessing an image of a scene captured by an image capture device attached to a vehicle. A reflected image present in the image may be detected. The reflected image may include a portion of the vehicle. It may be determined that the scene includes a transparent element based at least in part on detecting the reflected image present in the image.Type: GrantFiled: September 21, 2016Date of Patent: May 7, 2019Assignee: Amazon Technologies, Inc.Inventors: Chengwu Cui, Sarah Graber, Joshua John Watson, Scott Michael Wilcox
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Patent number: 10276628Abstract: An imaging device, including a monolithic semiconductor integrated circuit substrate, comprises a focal plane array of pixel cells. Each one of the pixel cells includes a gate overlying a region of the substrate operable to convert incident radiation into charge carriers. The pixel also includes a CMOS readout circuit including at least one output transistor in the substrate. The pixel further includes a charge coupled device section on the substrate adjacent the gate, the charge coupled device section including a sense node to receive charge carriers transferred from the region of the substrate beneath the gate. The sense node is coupled to the output transistor. The pixel also includes a reset switch coupled to the sense node. The pixel's charge coupled device section has a buried channel region. The pixel also includes one or more bias enabling switches operable to enable a bias voltage to be applied to the gate.Type: GrantFiled: May 16, 2017Date of Patent: April 30, 2019Assignee: ams Sensors Singapore Pte. Ltd.Inventors: Radoslaw Marcin Gancarz, Daniel Furrer, Miguel Bruno Vaello Paños, Stephan Beer
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Patent number: 10274588Abstract: Embodiments are directed toward measuring a three dimensional range to a target. A transmitter emits light toward the target. An aperture may receive light reflections from the target. The aperture may direct the reflections toward a sensor that comprises rows of pixels that have columns. The sensor is offset a predetermined distance from the transmitter. Anticipated arrival times of the reflections on the sensor are based on the departure times and the predetermined offset distance. A portion of the pixels are sequentially activated based on the anticipated arrival times. The target's three dimensional range measurement is based on the reflections detected by the portion of the pixels.Type: GrantFiled: September 1, 2017Date of Patent: April 30, 2019Inventor: Gerard Dirk Smits
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Patent number: 10262224Abstract: A camera is connected to a trained neural network. The camera takes an image of a scene and transmits the image to the neural network. A processor connected to the neural network has a localization filter and a robot model implemented therein. A global positioning system (GPS) receiver and inertial measurement unit (IMU) transmit GPS information and IMU information, respectively, to the processor. The localization filter filters the received GPS and IMU information and inputs the filtered information into the robot model. The robot model outputs current position information corresponding to the current image and previous position information corresponding to the respective one or more previous images. The neural network uses the current image and associated current position information and the one or more previous images and respective associated previous position information to generate an estimated optical flow image, which is transmitted to an object detection system.Type: GrantFiled: July 19, 2017Date of Patent: April 16, 2019Assignee: The United States of America as represented by Secretary of the NavyInventors: Joshua D. Harguess, Christopher M. Barngrover, Amin M. Rahimi
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Patent number: 10261175Abstract: A ranging apparatus includes a first array with first light sensitive detectors configured to receive light which has been reflected by an object and generate an output. A second array, spaced apart from the first array by a spacing distance, is further included, the second array having second light sensitive detectors. The second array is configurable to either receive light which has been reflected by the object or to be a reference array and generate an output. A processor operates to determine a distance to the object in response to the outputs from the first and the second arrays.Type: GrantFiled: May 11, 2016Date of Patent: April 16, 2019Assignee: STMicroelectronics (Research & Development) LimitedInventor: William Halliday
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Patent number: 10254762Abstract: To compensate for the effects of vibration on a lidar system in a vehicle, a vibration sensor within the lidar system and/or the vehicle detects vibration, such as a gyroscope, accelerometer, inertial measurement unit (IMU), etc. The detected vibration is then used to generate a compensation signal. The compensation signal is combined with a drive signal that drives a scanner configured to direct light pulses across a field of regard. The combined signal is provided to the scanner, and accordingly, the light pulses are accurately directed across the field of regard.Type: GrantFiled: March 8, 2018Date of Patent: April 9, 2019Assignee: Luminar Technologies, Inc.Inventors: John E. McWhirter, Jason M. Eichenholz, Austin K. Russell
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Patent number: 10247818Abstract: A detection system for detecting an object on a water surface, the detection system having a radio detection and ranging device for coarsely detecting a target water surface area with the object, and a laser detection and ranging device for detecting the object within the target water surface area, wherein the laser detection and ranging device includes a laser transmitter for transmitting a laser beam towards the target water surface area, a laser detector for detecting a reflected laser beam, the reflected laser beam forming a reflected version of the transmitted laser beam, and a processor for detecting the object within the target water surface area upon the basis of the reflected laser beam.Type: GrantFiled: October 23, 2014Date of Patent: April 2, 2019Assignees: LADAR LIMITED, HJELMSTAD ASInventor: Jens Hjelmstad
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Patent number: 10241198Abstract: A method for calibrating lidar systems operating in vehicles includes detecting a triggering event, causing the lidar system to not emit light during a calibration period, determining an amount of noise measured by the lidar system during the calibration period, generating a noise level metric based on the amount of noise detected during the calibration period, and adjusting subsequent readings of the lidar system using the noise level metric. The adjusting includes measuring energy levels of return light pulses emitted from the lidar system and scattered by targets and offsetting the measured energy levels by the noise level metric.Type: GrantFiled: November 30, 2017Date of Patent: March 26, 2019Assignee: Luminar Technologies, Inc.Inventors: Joseph G. LaChapelle, Rodger W. Cleye, Scott R. Campbell, Jason M. Eichenholz
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Patent number: 10241206Abstract: A sensor system for a vehicle for detecting bridges and tunnels is described, which includes a lateral LIDAR sensor, which is located on a first side of the vehicle and has a detection area covering a lateral surrounding area of the vehicle, and a control unit for evaluating the measuring data from the lateral LIDAR sensor. The lateral LIDAR sensor is positioned rotated about a vertical axis so that part of the detection area of the lateral LIDAR sensor at the front in the travel direction detects an upper spatial area located at a predefined distance ahead of the vehicle. The lateral LIDAR sensor is tilted about its transverse axis with respect to the horizontal, so the detection area of the lateral LIDAR sensor detects the remote upper spatial area at a predefined height above the vehicle using its part which is at the front in the direction of travel.Type: GrantFiled: July 12, 2016Date of Patent: March 26, 2019Assignee: ROBERT BOSCH GMBHInventors: Oliver Pink, Axel Buettner, Dominik Maucher, Achim Feyerabend, Christoph Schroeder
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Patent number: 10234326Abstract: Provided is an indication type level indicator including a total reflection prism provided on a float buoyant in the indication type level indicator so that, when laser is irradiated from an upper portion of the float, the laser is scattered by the total reflection prism and thus level legibility is improved. The indication type level indicator includes a chamber filled with a fluid and including a reading portion through which a level of the fluid is measured; the float provided in the chamber and including a material buoyant on the fluid moving vertically in the chamber along with the fluid; the total reflection prism provided on the float and configured to scatter light; and a laser module configured to irradiate laser to the total reflection prism so that the laser irradiated from the laser module is scattered by the total reflection prism to the reading portion.Type: GrantFiled: September 22, 2017Date of Patent: March 19, 2019Assignee: KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.Inventors: Hyuk Jin Kwon, Chang Sun Yoon, Mul Kwan Park
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Patent number: 10222795Abstract: Disclosed herein is a method and system for flying rotary wing drone. An add-on flight camera that is free to rotate around the vehicle's yaw axis is attached to the drone. The flight camera is automatically looking in the direction of its flight. The video from the flight camera is streamed to the operator's display. Thus the rotary wing drone can fly in any direction with respect to its structure, giving the operator a first person view along the flight path, thus keeping high level of situational awareness to the operator. The information required for controlling the camera orientation is derived from sensors, such as GPS, magnetometers, gyros and accelerometer. As a backup mode the information can be derived from propeller commands or tilt sensors.Type: GrantFiled: January 17, 2018Date of Patent: March 5, 2019Inventors: Joshua Margolin, Roy Ben-Anat
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Patent number: 10209349Abstract: Disclosed herein are a number of example embodiments that employ controllable delays between successive ladar pulses in order to discriminate between “own” ladar pulse reflections and “interfering” ladar pulses reflections by a receiver. Example embodiments include designs where a sparse delay sum circuit is used at the receiver and where a funnel filter is used at the receiver. Also, disclosed are techniques for selecting codes to use for the controllable delays as well as techniques for identifying and tracking interfering ladar pulses and their corresponding delay codes. The use of a ladar system with pulse deconfliction is also disclosed as part of an optical data communication system.Type: GrantFiled: February 14, 2018Date of Patent: February 19, 2019Assignee: AEYE, INC.Inventors: Luis Carlos Dussan, Allan Steinhardt
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Patent number: 10197664Abstract: Broadband signal transmissions may be used for object detection and/or ranging. Broadband transmissions may comprise a pseudo-random bit sequence or a bit sequence produced using, a random process. The sequence may be used to modulate transmissions of a given wave type. Various types of waves may be utilized, pressure, light, and radio waves. Waves reflected by objects within the sensing volume may be sampled. The received signal may be convolved with a time-reversed copy of the transmitted random sequence to produce a correlogram. The correlogram may be analyzed to determine range to objects. The analysis may comprise determination of one or more peaks/troughs in the correlogram. Range to an object may be determines based on a time lag of a respective peak.Type: GrantFiled: July 20, 2015Date of Patent: February 5, 2019Assignee: Brain CorporationInventor: Micah Richert
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Patent number: 10194099Abstract: An imaging apparatus according to an aspect of the present disclosure includes a light source that, in operation, emits first pulsed light and second pulsed light, an image sensor that includes at least one pixel including a photodiode, a first charge accumulator and a second charge accumulator, the first charge accumulator and the second charge accumulator, in operation, accumulating signal charge from the photodiode, and a control circuit that, in operation, controls the image sensor. The control circuit, in operation, causes the first charge accumulator to begin to accumulate the signal charge a period of time after the light source begins to emit the first pulsed light. The control circuit, in operation, causes the second charge accumulator to begin to accumulate the signal charge the period of time after the light source begins to emit the second pulsed light.Type: GrantFiled: June 8, 2016Date of Patent: January 29, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takamasa Ando, Tsuguhiro Korenaga, Toshiya Fujii
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Patent number: 10189399Abstract: A light system includes at least one time-of-flight image sensor configured to generate at least one zone distance measurement. At least one control unit is configured to receive the at least one zone distance measurement and to generate at least one control signal based on the at least one zone distance measurement. At least one light unit is configured to adapt an output of the light unit based on the at least one control signal.Type: GrantFiled: October 20, 2017Date of Patent: January 29, 2019Assignee: STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITEDInventor: Bruce Rae
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Patent number: 10191156Abstract: A LIDAR system is provided. The LIDAR system comprises at least one processor configured to: control at least one light source in a manner enabling light intensity to vary over a scan of a field of view using light from the at least one light source; control at least one light deflector to deflect light from the at least one light source; obtain an identification of at least one distinct region of interest in the field of view; and increase light allocation to the at least one distinct region of interest relative to other regions, such that following a first scanning cycle, light intensity in at least one subsequent second scanning cycle at locations associated with the at least one distinct region of interest is higher than light intensity in the first scanning cycle at the locations associated with the at least one distinct region of interest.Type: GrantFiled: December 21, 2017Date of Patent: January 29, 2019Assignee: INNOVIZ TECHNOLOGIES LTD.Inventors: Amit Steinberg, Pavel Berman, David Elooz, Guy Zohar, Hanoch Kremer, Julian Vlaiko, Nir Osiroff, Omer David Keilaf, Oren Buskila, Oren Rosenzweig, Ronen Eshel