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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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81 US202018853A1
PHOTODETECTOR
Publication/Patent Number: US202018853A1 Publication Date: 2020-01-16 Application Number: 20/191,658 Filing Date: 2019-09-26 Inventor: Ozaki, Noriyuki   Kashiwada, Shinji   Hata, Takehiro   Azuma, Kenta   Kimura, Teiyu   Assignee: DENSO CORPORATION   IPC: H01L31/0232 Abstract: A light reception array unit receives light irradiated from an irradiation unit and reflected from an object, and outputs in parallel a pulse signal respectively output from a plurality of light reception units. A timer unit measures an elapsed time since an input of an irradiation timing signal. A response acquisition unit acquires a number of responses, which is a number of the light reception units outputting the pulse signal, at each fixed cycle timing, and outputs an adjusted number of responses obtained by subtracting a bias value from the number of responses or dividing the number of responses by the bias value. An address of a memory is associated with a timer value measured by the timer unit. A histogram generation unit integrates and stores, in a memory address specified from a timer value, the adjusted number of responses as data at that address.
82 US10557925B2
Time-of-flight (TOF) image sensor using amplitude modulation for range measurement
Publication/Patent Number: US10557925B2 Publication Date: 2020-02-11 Application Number: 15/340,972 Filing Date: 2016-11-01 Inventor: Wang, Yibing Michelle   Lee, Tae-yon   Ovsiannikov, Ilia   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: G01C3/08 Abstract: The Time-of-Flight (TOF) technique is combined with analog amplitude modulation within each pixel in an image sensor. The pixel may be a two-tap pixel or a one-tap pixel. Two photoelectron receiver circuits in the pixel receive respective analog modulating signals. The distribution of the received photoelectron charge between these two circuits is controlled by the difference (or ratio) of the two analog modulating voltages. The differential signals generated in this manner within the pixel are modulated in time domain for TOF measurement. Thus, the TOF information is added to the received light signal by the analog domain-based single-ended to differential converter inside the pixel itself. The TOF-based measurement of range and its resolution are controllable by changing the duration of modulation. An autonomous navigation system with these features may provide improved vision for drivers under difficult driving conditions like low light, fog, bad weather, or strong ambient light.
83 US10755430B1
Method for estimating distance using point measurement and color depth
Publication/Patent Number: US10755430B1 Publication Date: 2020-08-25 Application Number: 16/393,921 Filing Date: 2019-04-24 Inventor: Ebrahimi, Afrouzi Ali   Mehrnia, Soroush   Assignee: AI Incorporated   IPC: H04N7/18 Abstract: A method including: positioning sensors on a robotic device; positioning a camera on the robotic device; capturing an image of the environment; measuring color depth of each pixel in the image; classifying each pixel into a color depth range; determining for at least one set of two points captured in the image, if the color depth of pixels measured in a region between the two points is within a predetermined range of color; generating at least one line between the two points when the color depth of pixels measured in the region between the two points is within the predetermined range of color; identifying on a map of the environment a wall surface on which the line is generated as a flat wall surface; and adjusting a heading of the robotic device relative to an angle of the wall surface.
84 US2020072603A1
OPTICAL SENSOR AND OPTICAL SENSOR SYSTEM
Publication/Patent Number: US2020072603A1 Publication Date: 2020-03-05 Application Number: 16/675,312 Filing Date: 2019-11-06 Inventor: Hsu, En-feng   Liu, Chia-yu   Assignee: PixArt Imaging Inc.   IPC: G01C3/08 Abstract: An optical sensor includes at least two optical sensing pixels and at least two different grating elements. These grating elements are disposed above these optical sensing pixels correspondingly.
85 US2020003624A1
TRACKING AND RANGING SYSTEM AND METHOD THEREOF
Publication/Patent Number: US2020003624A1 Publication Date: 2020-01-02 Application Number: 16/255,977 Filing Date: 2019-01-24 Inventor: Ni, Ming-hong   Liu, Chien-hung   Assignee: Quanta Computer Inc.   IPC: G01J5/02 Abstract: A tracking and ranging system includes a thermal sensor device, a controller, a ranging device and a transmission device. The thermal sensor device is configured to capture a thermal image. The controller analyzes the thermal image to identify the main heat source from among the heat sources displayed in the thermal image, and obtain an offset distance between the center points of the main heat source and the thermal image. The ranging device is coupled to the controller. The transmission device loads the ranging device and is coupled to the controller. The controller controls the motion of the transmission device in accordance with the offset distance to correct the offset angle between the ranging device and the object corresponding to the main heat source. After correcting the offset angle, the ranging device detects a first distance to the object by transmitting energy and receiving reflected energy.
86 US10775017B2
Lighting device
Publication/Patent Number: US10775017B2 Publication Date: 2020-09-15 Application Number: 16/073,574 Filing Date: 2017-01-12 Inventor: Streppel, Ulrich   Assignee: OSRAM OLED GmbH   IPC: F21V5/00 Abstract: A lighting device includes a plurality of semiconductor light sources, the semiconductor light sources being configured to generate different light radiations; and an optical element arranged downstream of the semiconductor light sources, the optical element including on a side facing away from the semiconductor light sources a structure constituted of truncated pyramids.
87 US10557923B2
Real-time processing and adaptable illumination lidar camera using a spatial light modulator
Publication/Patent Number: US10557923B2 Publication Date: 2020-02-11 Application Number: 15/049,401 Filing Date: 2016-02-22 Inventor: Watnik, Abbie T.   Lebow, Paul S.   Assignee: The Government of the United States of America, as represented by the Secretary of the Navy   IPC: G01C3/08 Abstract: An apparatus for illuminating or masking an object and a method of using same. The apparatus includes a spatial light modulator transmitting, a structured pulsed laser beam from a pupil plane to at least one image plane in a field of view. The apparatus further includes a lidar detector receiving reflected laser beam reflected from the at least one image plane. For example, the lidar detector detects range, position, and/or time data for at least one object of interest or at least one object of disinterest. Using the detected data, the spatial light modulator illuminates object of interest or masks an object of disinterest, depending on a user's application.
88 US10557942B2
Estimation of motion using LIDAR
Publication/Patent Number: US10557942B2 Publication Date: 2020-02-11 Application Number: 15/613,974 Filing Date: 2017-06-05 Inventor: Belsley, Kendall   Sebastian, Richard   Assignee: DSCG Solutions, Inc.   IPC: G01C3/08 Abstract: Techniques of tracking an object's motion involve using a LIDAR system that is configured to track an object over a period of time in which the object is moving using a single scanning motion. Using the LIDAR system, tracking of the object can be performed while eliminating visible imaging hardware (e.g., video camera hardware). Accordingly, the LIDAR system can be configured to operate in total darkness, into the sun, etc. The LIDAR system can be less susceptible to motion of the object than conventional systems. Accordingly, the motion of the object 110 be determined in some implementations solely from LIDAR measurements, without, for example, video.
89 US10527726B2
Methods and apparatus for LIDAR with DMD
Publication/Patent Number: US10527726B2 Publication Date: 2020-01-07 Application Number: 15/202,315 Filing Date: 2016-07-05 Inventor: Bartlett, Terry Alan   Shaw, Stephen Aldridge   Oden, Patrick Ian   Assignee: TEXAS INSTRUMENTS INCORPORATED   IPC: G01C3/08 Abstract: In described examples, a system for outputting a patterned light beam includes a digital micro-mirror device having an array of micro-mirrors. Diffraction patterns displayed using the digital micro-mirror device create at least one patterned light beam in a field of view. An illumination source illuminates the array of micro-mirrors in the digital micro-mirror device. The system includes a processor coupled to provide display diffraction patterns for display using the digital micro-mirror device and to control the illumination source, and at least one detector to detect light from the patterned light beam that reflects from objects in the field of view.
90 US10725157B1
Industrial safety sensor
Publication/Patent Number: US10725157B1 Publication Date: 2020-07-28 Application Number: 16/376,009 Filing Date: 2019-04-05 Inventor: Yates, Chris   Boutaud, Frederic   Abrosimov, Igor   Softley, Chris   Tilleman, Michael M.   Galera, Richard   Ananthanaraya, Arvind   Assignee: Rockwell Automation Technologies, Inc.   IPC: G01C3/08 Abstract: An active illumination three-dimensional sensor device is configured with a number of diagnostic functions that can satisfy the requirements of industrial safety within the context of a single-channel safety sensor architecture. The sensor diagnostic functions provide sufficient diagnostic coverage for an optical safety sensor (e.g., a time-of-flight safety sensor) to achieve a desired safety integrity level without the need for multiple channels. The diagnostic features can be applied to one or more components along the single-channel path (e.g., the sequencer, the illumination source, input and/or output optics, image sensor pixel, etc.) to provide a level of diagnostic coverage that renders the optical safety sensor suitable for use within industrial safety applications requiring high safety integrity levels.
91 US2020250846A1
IMAGE DISTANCE CALCULATOR AND COMPUTER-READABLE, NON-TRANSITORY STORAGE MEDIUM STORING IMAGE DISTANCE CALCULATION PROGRAM
Publication/Patent Number: US2020250846A1 Publication Date: 2020-08-06 Application Number: 15/752,892 Filing Date: 2017-08-28 Inventor: Oka, Ryuichi   Assignee: The Public University Corporation, The Uniuversity Of Aizu   IPC: G06T7/579 Abstract: In an image distance calculator (100), a CPU (104) extracts a frame image from moving images of an object captured by a camera, generates a slice image on the basis of a temporal change in a pixel line on a y-axis at a point x0 in the frame image, calculates a spotting point on the basis of correspondences between pixels in the slice image and pixels in the frame image, obtains pixels in the frame image corresponding to pixels in the slice image by a back-trace process, segments the frame image and slice image into regions, determines a corresponding region corresponding to a segmented region of the slice image, calculates a ratio value from an average q of the numbers of pixels in the corresponding region in the frame image and an average p of the numbers of pixels in the segmented region of the slice image, and calculates the distance z from the camera to the object for each corresponding region using a predetermined distance function.
92 US2020278562A1
STRUCTURED LIGHT PROJECTION MODULE, DEPTH CAMERA, AND METHOD FOR MANUFACTURING STRUCTURED LIGHT PROJECTION MODULE
Publication/Patent Number: US2020278562A1 Publication Date: 2020-09-03 Application Number: 16/867,457 Filing Date: 2020-05-05 Inventor: Huang, Yuanhao   Wang, Zhaomin   Yan, Min   Xu, Xing   Chen, Xu   Assignee: SHENZHEN ORBBEC CO., LTD.   IPC: G02B27/48 Abstract: A structured light projection module, a depth camera, and a method for manufacturing the structured light projection module are provided. The module comprises: a light source, comprising a plurality of sub-light sources that are arranged in a two-dimensional array and configured to emit two-dimensional patterned beams corresponding to the two-dimensional array, and the two-dimensional patterned beams comprising two-dimensional patterns; a lens, receiving and converging the two-dimensional patterned beams; and a diffractive optical element, receiving the two-dimensional patterned beams converged and emitted from the lens, and projecting speckle patterned beams corresponding to speckle patterns. The speckle patterns comprise a plurality of image patterns corresponding to the two-dimensional patterns. Relationships between adjacent image patterns of the plurality of image patterns comprise at least two of an overlapping relationship, an adjoining relationship, and a spacing relationship. The structured light projection module can project speckle patterns having a high degree of irrelevance.
93 US10620318B2
Single-line-extracted pure rotational Raman lidar to measure atmospheric temperature and aerosol profiles
Publication/Patent Number: US10620318B2 Publication Date: 2020-04-14 Application Number: 15/600,780 Filing Date: 2017-05-21 Inventor: Yi, Fan   Weng, Miao   Liu, Fuchao   Zhang, Yunpeng   Yu, Changming   He, Yujin   Tan, Ying   Yi, Yang   Pan, Xiangliang   Assignee: WUHAN UNIVERSITY   IPC: G01C3/08 Abstract: A single-line-extracted pure rotational Raman lidar system, including: a transmitter unit configured to emit extremely narrow-band laser light that is guided into atmosphere zenithward; a receiver unit configured to collect backscattered signals from the atmosphere; and a data acquisition and control unit configured to deliver data and guarantee automatic operation of the lidar system orderly. The transmitter unit employs a powerful injection-seeded Nd: YAG laser to emit 532.23 nm laser beam with a pulse energy of approximately 800 mJ, a repetition rate of 30 Hz and linewidth of <0.006 cm−1. The lidar system has an optical bandwidth of approximately 30 pm for the two Raman channels and an optical bandwidth of 0.3 nm for an elastic channel, as well as a field of view of approximately 0.4 mrad. The two Raman channels extract the N2 anti-Stokes pure rotational Raman line signals with J=6 and 16, respectively.
94 US2020217656A1
METHOD AND APPARATUS FOR MEASURING DISTANCE USING VEHICLE-MOUNTED CAMERA, STORAGE MEDIUM, AND ELECTRONIC DEVICE
Publication/Patent Number: US2020217656A1 Publication Date: 2020-07-09 Application Number: 16/623,859 Filing Date: 2018-01-31 Inventor: Tang, Xiaojun   Assignee: BOE TECHNOLOGY GROUP CO., LTD.   IPC: G01C3/08 Abstract: The present disclosure relates to a method and an apparatus for measuring a distance using a vehicle-mounted camera, a storage medium, and an electronic device. The method includes: calibrating a camera based on camera calibration images to obtain a camera parameter; detecting parallel lane lines to obtain a vanishing point of the parallel lane lines according to the detected parallel lane lines; calculating a pitch angle of the camera according to the camera parameter and the vanishing point; determining information of an object to be detected in an image captured by the camera; and calculating a distance from the object to be detected to the camera and a size of the object to be detected according to the information of the object to be detected, the pitch angle of the camera, and the camera parameter.
95 US202003624A1
TRACKING AND RANGING SYSTEM AND METHOD THEREOF
Publication/Patent Number: US202003624A1 Publication Date: 2020-01-02 Application Number: 20/191,625 Filing Date: 2019-01-24 Inventor: Liu, Chien-hung   Ni, Ming-hong   Assignee: Quanta Computer Inc.   IPC: G06T7/521 Abstract: A tracking and ranging system includes a thermal sensor device, a controller, a ranging device and a transmission device. The thermal sensor device is configured to capture a thermal image. The controller analyzes the thermal image to identify the main heat source from among the heat sources displayed in the thermal image, and obtain an offset distance between the center points of the main heat source and the thermal image. The ranging device is coupled to the controller. The transmission device loads the ranging device and is coupled to the controller. The controller controls the motion of the transmission device in accordance with the offset distance to correct the offset angle between the ranging device and the object corresponding to the main heat source. After correcting the offset angle, the ranging device detects a first distance to the object by transmitting energy and receiving reflected energy.
96 US10585173B1
Systems and methods for enhanced ToF resolution
Publication/Patent Number: US10585173B1 Publication Date: 2020-03-10 Application Number: 16/378,965 Filing Date: 2019-04-09 Inventor: Zhu, Li   Lyu, Fanglu   Wang, Bo   Assignee: Shenzhen Guangjian Technology Co., Ltd.   IPC: G01C3/08 Abstract: Systems and methods for projecting and detecting light are disclosed. Systems and methods for determining surface depth information using Time-of-Flight (“ToF”) detectors configured to measure time-of-flight in connection with flood light reflections, structured light reflections, and/or a fusion of both (e.g., in a selective, controlled, and/or patterned manner) are disclosed. Some portions of this disclosure also relate to embodiments of the technology configured for operation in connection with a switchable diffuser.
97 US10578721B2
LiDAR device
Publication/Patent Number: US10578721B2 Publication Date: 2020-03-03 Application Number: 16/283,542 Filing Date: 2019-02-22 Inventor: Jang, Jun Hwan   Yoon, Hee Sun   Assignee: SOS LAB CO., LTD   IPC: G01C3/08 Abstract: A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.
98 US2020254471A1
PRECISION REAL-TIME LASER MEASUREMENT AND MARKING APPARATUS
Publication/Patent Number: US2020254471A1 Publication Date: 2020-08-13 Application Number: 16/510,866 Filing Date: 2019-07-12 Inventor: Beaumont, Tom   Assignee: BEAUMONT, TOM   IPC: B05B12/16 Abstract: A precision real-time laser measurement and marking apparatus is provided. The disclosure also relates to the multiple components of the precision real-time laser measurement and marking apparatus in accordance with an embodiment of the present disclosure. The multiple components of precision real-time laser measurement and marking apparatus are as follows: the main housing; the foam spray can; the universal clip; and the fully assembled precision real-time laser measurement and marking apparatus. A method of using a precision real-time laser measurement and marking apparatus is provided. The method comprising pressing a distance measurement button while aiming an apparatus at a target; displaying an exact distance measurement on a LED screen wherein the exact distance measurement is the distance between the target and the apparatus; determining the exact distance measurement matches a desired distance; and marking a distance boundary using a spray nozzle of the apparatus.
99 US2020215865A1
PLANT SCANNING VEHICLE
Publication/Patent Number: US2020215865A1 Publication Date: 2020-07-09 Application Number: 16/647,787 Filing Date: 2018-08-31 Inventor: Sirault, Xavier Raymond Richard   Salim, Michael   Kuffner, Peter Carl   Jimenez-berni, Jose Antonio   Sulman, Richard   Assignee: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION   IPC: B60G17/015 Abstract: Plant scanning vehicles (10) including, but not limited to, plant scanning vehicles for use in field-based phenotyping. There is a central body (16); three or more legs (15) extending from the central body (16) to support a wheel (13) on each leg (15); wherein the three or more legs (15) are mounted to the central body (16) rotatably about a respective vertical axis (95) to allow adjustment of a track width W of the vehicle by rotating the legs wherein the legs are mechanically coupled to transmit rotation between the legs about their respective vertical axes and the central body (16) or the three or more legs (13) are configured to support a sensor (47) to scan plants.
100 US2020018853A1
PHOTODETECTOR
Publication/Patent Number: US2020018853A1 Publication Date: 2020-01-16 Application Number: 16/584,033 Filing Date: 2019-09-26 Inventor: Hata, Takehiro   Ozaki, Noriyuki   Kimura, Teiyu   Azuma, Kenta   Kashiwada, Shinji   Assignee: DENSO CORPORATION   IPC: G01S17/10 Abstract: A light reception array unit receives light irradiated from an irradiation unit and reflected from an object, and outputs in parallel a pulse signal respectively output from a plurality of light reception units. A timer unit measures an elapsed time since an input of an irradiation timing signal. A response acquisition unit acquires a number of responses, which is a number of the light reception units outputting the pulse signal, at each fixed cycle timing, and outputs an adjusted number of responses obtained by subtracting a bias value from the number of responses or dividing the number of responses by the bias value. An address of a memory is associated with a timer value measured by the timer unit. A histogram generation unit integrates and stores, in a memory address specified from a timer value, the adjusted number of responses as data at that address.