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1
US2021180950A1
MEASUREMENT DEVICE AND LIGHT PROJECTION SYSTEM USING THE MEASUREMENT DEVICE
Publication/Patent Number: US2021180950A1 Publication Date: 2021-06-17 Application Number: 17/190,107 Filing Date: 2021-03-02 Inventor: Murata, Keiji   Assignee: Murata Manufacturing Co., Ltd.   IPC: G01C3/08 Abstract: Disclosed herein is a measurement device capable of measuring distance to an object. The measurement device comprises an illumination optical system configured to emit irradiation light having a predetermined pattern onto an object through a first optical path and a second optical path different from each other, and an observation system configured to observe a first light source image projected onto the object through the first optical path and a second light source image projected onto the object through the second optical path. The illumination optical system is configured to focus light through the first optical path and light through the second optical path on predetermined positions in a plan view of the object viewed along a traveling direction of the irradiation light. The measurement device measures a distance to the object based on the first light source image and the second light source image observed by the observation system.
2
CN112368602A
具有高时间分辨率的光学雷达
Substantial Examination
Publication/Patent Number: CN112368602A Publication Date: 2021-02-12 Application Number: 201880095336.7 Filing Date: 2018-07-12 Inventor: 曹培炎   刘雨润   Assignee: 深圳帧观德芯科技有限公司   IPC: G01S17/08 Abstract: 本文公开了一种确定入射光子到达时间的方法和装置。基于由入射光子产生的电荷载流子充电的电容器上的电压的变化率的特征,所述到达时间可以以高时间精度被确定。
3
US11059604B2
Method of assembly of the structure of an aircraft and frame for carrying out said method
Publication/Patent Number: US11059604B2 Publication Date: 2021-07-13 Application Number: 16/289,915 Filing Date: 2019-03-01 Inventor: Cimadevilla, García David   Palacios, Vicente Jesús   Barcina, Benito Adrian   Palacios, Martínez Javier   Assignee: ACITURRI ENGINEERING S.L.U.   IPC: B64F5/10 Abstract: A method for performing the assembly of an aircraft includes, once at least first and second templates (A, B) with through holes (a, b) have been defined on a chassis, taking an initial measurement of the templates to identify the positions of the different components; measuring a laser beam to know the real coordinates through which the laser beam passes through the holes (a, b), calculating the mathematical equation of the straight line of the laser beam in order to calculate its path and target points of the elements to be assembled, performing the mathematical calculation of the point where the laser beam must strike when the element is positioned in its theoretical position, calculating the target readings which the measurement apparatus has to show when the laser is in the target point, positioning the element to be assembled following the reading of the apparatus, and fixing the element.
4
US2021190484A1
METHOD AND APPARATUS FOR SINGLE CAMERA OPTICAL MEASUREMENTS
Publication/Patent Number: US2021190484A1 Publication Date: 2021-06-24 Application Number: 17/179,448 Filing Date: 2021-02-19 Inventor: Edelman, Leonid Valerianovich   Assignee: Topcon Positioning Systems, Inc.   IPC: G01C3/08 Abstract: An optical measurement system and method that utilizes a single camera in combination with a specially configured target object which significantly improves optical measuring accuracy with respect to the measurement of distance, height difference and position.
5
EP3821274A1
A LIDAR WITH HIGH TIME RESOLUTION
Publication/Patent Number: EP3821274A1 Publication Date: 2021-05-19 Application Number: 18926260.3 Filing Date: 2018-07-12 Inventor: Cao, Peiyan   Liu, Yurun   Assignee: Shenzhen Xpectvision Technology Co., Ltd.   IPC: G01S17/08
6
US10962363B2
Method and apparatus for single camera optical measurements
Publication/Patent Number: US10962363B2 Publication Date: 2021-03-30 Application Number: 15/561,326 Filing Date: 2016-01-25 Inventor: Edelman, Leonid Valerianovich   Assignee: Topcon Positioning Systems, Inc.   IPC: G01C3/08 Abstract: An optical measurement system and method that utilizes a single camera in combination with a specially configured target object which significantly improves optical measuring accuracy with respect to the measurement of distance, height difference and position.
7
US10900773B2
Distance measuring device and three-dimensional shape measuring apparatus
Publication/Patent Number: US10900773B2 Publication Date: 2021-01-26 Application Number: 16/484,844 Filing Date: 2018-05-22 Inventor: Watanabe, Masahiro   Hariyama, Tatsuo   Taniguchi, Atsushi   Maruno, Kenji   Assignee: Hitachi, Ltd.   IPC: G01B11/24 Abstract: An object is to provide a technology capable of realizing miniaturizing of a measurement unit in a distance measuring device. The distance measuring device including a light emitting unit that outputs measurement light, a polarization state control unit that controls polarization of the measurement light output from the light emitting unit, and an optical path switching element that selectively emits the measurement light controlled by the polarization state control unit, in which the polarization state control unit controls the polarization so as to emit the measurement light in a plurality of directions from the optical path switching element, and the optical path switching element receives reflected light with respect to an object of the measurement light emitted from the optical path switching element, the reflected light being used to measure a distance to the object.
8
US2021180949A1
LASER MEASURING SYSTEM WITH MULTIPLE SYNCHRONOUS BASES
Publication/Patent Number: US2021180949A1 Publication Date: 2021-06-17 Application Number: 16/710,090 Filing Date: 2019-12-11 Inventor: Khatuntsev, Nikolay V.   Assignee: Topcon Positioning Systems, Inc.   IPC: G01C3/08 Abstract: A laser measuring system including first and second laser base stations and a laser receiver is provided. The laser receiver detects a first laser signal from the first laser base station. Location information associated with the first laser base station is extracted from the detected first laser signal. The laser receiver detects a second laser signal from the second laser base station. Location information associated with the second laser base station is extracted from the detected second laser signal. A position of the laser receiver is determined based on the extracted location information associated with the first laser base station and the extracted location information associated with the second laser base station.
9
US2021190493A1
Surveying Instrument
Publication/Patent Number: US2021190493A1 Publication Date: 2021-06-24 Application Number: 17/114,913 Filing Date: 2020-12-08 Inventor: Yuasa, Taichi   Assignee: TOPCON Corporation   IPC: G01C15/02 Abstract: A surveying instrument includes a distance measuring unit which irradiates an object with the distance measuring light and measures a distance to the object based on the reflected distance measuring light from the object, wherein the distance measuring unit includes a distance measuring light projecting module configured to project the distance measuring light and a distance measuring light receiving module configured to receive the reflected distance measuring light, the distance measuring light receiving module includes a dichroic prism and a light receiving module, and the dichroic prism is configured in such a manner that the reflected distance measuring light is internally reflected in the dichroic prism at least three times and then received by the light receiving module.
10
US2021256665A1
GENERATION APPARATUS, GENERATION METHOD, AND STORAGE MEDIUM
Publication/Patent Number: US2021256665A1 Publication Date: 2021-08-19 Application Number: 17/168,292 Filing Date: 2021-02-05 Inventor: Furusawa, Kazuyuki   Mizuno, Ryosuke   Assignee: CANON KABUSHIKI KAISHA   IPC: G06T5/00 Abstract: The present invention can reduce a memory bandwidth required for calculation of distance information. Provided is a generation apparatus that generates a range image indicating a distance to a subject. The generation apparatus includes: a generation unit that generates the range image based on a pair of captured images with parallax; and a correction unit that corrects distortion, caused by an optical system of an image capturing unit generating the pair of captured images, in a region of the range image, the region being a region in which reliability is a predetermined threshold or more.
11
US2021112211A1
PHOTOELECTRIC CONVERSION DEVICE AND IMAGING SYSTEM
Publication/Patent Number: US2021112211A1 Publication Date: 2021-04-15 Application Number: 17/061,748 Filing Date: 2020-10-02 Inventor: Kumagai, Tomoya   Assignee: CANON KABUSHIKI KAISHA   IPC: H04N5/355 Abstract: A photoelectric conversion device includes pixels arranged to form columns, comparator circuits for respective columns, and a control circuit that controls the comparator circuits. Each comparator circuit includes a first comparator circuit connected to a first pixel of a first color, a second comparator circuit arranged on a column adjacent to the first comparator circuit and connected to a second pixel of a second color, and a third comparator circuit arranged on a column adjacent to the second comparator circuit and connected to a third pixel of the first color. Each comparator circuit compares a pixel signal on a corresponding column with a reference signal changing with time and outputs a comparison signal indicating a different level whether a difference between these signals is smaller or larger than a threshold. The control circuit controls the threshold to change stepwise in order of the first, third, and second comparator circuits.
12
US11062468B2
Distance measurement using projection patterns of varying densities
Publication/Patent Number: US11062468B2 Publication Date: 2021-07-13 Application Number: 16/354,360 Filing Date: 2019-03-15 Inventor: Kimura, Akiteru   Assignee: MAGIK EYE INC.   IPC: G06T7/521 Abstract: In one example, a method includes instructing a pattern projector of a distance sensor to project a pattern of light onto the object, wherein the pattern comprise a plurality of parallel rows of projection artifacts, and wherein a spatial density of the projection artifacts in a first row of the plurality of parallel rows is different from a spatial density of the projection artifacts in a second row of the plurality of parallel rows, instructing a camera of the distance sensor to acquire an image of the object, where the image includes the pattern of light, and calculating a distance from the distance sensor to the object based on an analysis of the image.
13
US11073386B2
Sensing element and optical distance measurement system
Publication/Patent Number: US11073386B2 Publication Date: 2021-07-27 Application Number: 16/157,328 Filing Date: 2018-10-11 Inventor: Hsu, En-feng   Liu, Chia-yu   Assignee: PIXART IMAGING INC.   IPC: G01C3/08 Abstract: A sensing element includes a plurality of sensing pixel areas arranged in matrix, wherein each of the plurality of sensing pixel areas includes a first pixel, a second pixel, a first shielding layer, a second shielding layer and at least one micro lens. The second pixel is adjacent to the first pixel in a predetermined direction. The first shielding layer is disposed on the first pixel and has a first opening, wherein an aperture of the first opening increases along the predetermined direction from a center of the first pixel. The second shielding layer is disposed on the second pixel and has a second opening, wherein a shape of the second opening is mirror symmetrical with that of the first opening in the predetermined direction. The at least one micro lens is disposed on the first shielding layer and the second shielding layer.
14
US10996324B2
Time of flight system and method using multiple measuring sequences
Publication/Patent Number: US10996324B2 Publication Date: 2021-05-04 Application Number: 15/978,728 Filing Date: 2018-05-14 Inventor: Boutaud, Frederic   Assignee: Rockwell Automation Technologies, Inc.   IPC: G01C3/08 Abstract: A time of flight sensor device is capable of extending its total sensing distance using multiple measuring sequences for each distance measuring operation. Such embodiments can execute two or more iterations of a measuring sequence, where the gating signal control sequence for each measuring sequence is offset in time relative to a previous sequence. This yields a greater number of sampling points within which a reflected pulse can be detected and measured, resulting in a total measurable time of flight range that is greater than a measuring operation that uses a fixed timing for the gating signals.
15
CN107709927B
在对象上通过借助于激光测量模块测定测量点的方位进行长度测量
Grant
Publication/Patent Number: CN107709927B Publication Date: 2021-05-18 Application Number: 201680039857.1 Filing Date: 2016-06-08 Inventor: S.阿斯曼   S.托多罗夫   Assignee: 罗伯特·博世有限公司   IPC: G01C15/00 Abstract: 本发明的出发点是如下系统,所述系统具有激光测量模块(12),所述激光测量模块被设置用于长度测量,而且所述系统具有至少一个显示模块(14),所述显示模块至少被设置为电子地呈现至少一个借助于激光测量模块(12)来测定方位的测量点(16、18、20)。提出:显示模块(14)独立于激光测量模块(12)或者能从激光测量模块(12)取下地来构造。
16
US11035659B2
Inertial dimensional metrology
Publication/Patent Number: US11035659B2 Publication Date: 2021-06-15 Application Number: 16/661,762 Filing Date: 2019-10-23 Inventor: Ihlenfeldt, Steven Eugene   Ingham, Edward A.   Assignee: Ihlenfeldt, Steven Eugene   Ingham, Edward A.   IPC: G01B5/008 Abstract: A method of performing dimensional metrology of an object (12) includes incorporating an Inertial Measurement Unit (IMU-18) with an elongate probe (20) in a portable metroprobe (10). A tip (22) of the probe (20) has an offset length (L) from an origin (26) of a coordinate system in the IMU (18) and position (X,Y,Z) thereof is correlated based on attitude (A,B,C) measurement of the IMU (18). The metroprobe (10) is transported in sequence to a complement of survey points (Pn) on the object (12) for measuring corresponding coordinates (X,Y,Z) thereof based on measured attitude (A,B,C) of the IMU (18).
17
US11029394B2
Lidar systems and methods
Publication/Patent Number: US11029394B2 Publication Date: 2021-06-08 Application Number: 16/386,823 Filing Date: 2019-04-17 Inventor: Li, Jiasheng   Wang, Hongguang   Xiang, Shaoqing   Assignee: HESAI TECHNOLOGY CO., LTD.   IPC: G01C3/08 Abstract: A Lidar system is provided. The Lidar system may comprise: a plurality of light sources configured to emit a plurality of light beams, the plurality of light sources are mounted to a first mounting apparatus comprising a cooling feature; a plurality of optical fiber elements, and each of the plurality of light sources is optically coupled to an input end of one or more optical fiber elements from the plurality of optical fiber elements; and a second mounting apparatus comprising at least one mounting unit coupled to an emitting end of the plurality of optical fiber elements, and the at least one mounting unit is configured to control an output direction of the plurality of light beams individually, and a distribution pattern of the plurality of light beams emitted from the emitting end of the plurality of optical fiber elements.
18
US11112242B2
Light receiver
Publication/Patent Number: US11112242B2 Publication Date: 2021-09-07 Application Number: 15/984,141 Filing Date: 2018-05-18 Inventor: Seitz, Peter   Ammer, Thomas   Hinderling, Jürg   Assignee: LEICA GEOSYSTEMS AG   IPC: G01C15/00 Abstract: A light receiver designed to determine a position or orientation relative to a reference light wherein the light receiver comprises an elongated rod-shaped light receptor with two ends, a light coupler, a light guide, and light detection means at both ends and a signal processor to process the electric signals of the detection means and to determine the relative position and/or orientation by a comparative evaluation of the electric signals. The light guide serves as a light propagation path of defined length for light coupled into the light guide by the light coupler and the signal processor determines the position and/or orientation based on light propagation speed of the reference light propagating in the light guide.
19
US11023706B2
Measurement system and measurement method
Publication/Patent Number: US11023706B2 Publication Date: 2021-06-01 Application Number: 16/413,619 Filing Date: 2019-05-16 Inventor: Nakatsuka, Hitoshi   Iida, Toyoo   Assignee: OMRON Corporation   IPC: G06K9/00 Abstract: A measurement system includes a first distance calculation unit that searches for a corresponding region, indicating a same array as an array of codes indicated by a predetermined number of reference patterns included in a unit region set in the projection pattern, from a set of the codes, and calculates a distance from an irradiation reference surface of the projection pattern to each portion of the object on the basis of a search result of the corresponding region, and a second distance calculation unit that attempts to estimate a distance for the defective portion for which the first distance calculation unit is not able to calculate the distance by reconstructing an incomplete code corresponding to the defective portion using peripheral information in the input image.
20
US11061120B2
Sensor calibration
Publication/Patent Number: US11061120B2 Publication Date: 2021-07-13 Application Number: 15/960,902 Filing Date: 2018-04-24 Inventor: Castorena, Martinez Juan Enrique   Puskorius, Gintaras Vincent   Pandey, Gaurav   Assignee: Ford Global Technologies, LLC   IPC: G01S7/497 Abstract: A system and methods are described for calibrating one sensor with respect to another. A method includes: determining a depth-motion vector using a first sensor; determining an optical-motion vector using a second sensor; and calibrating the first sensor with respect to the second sensor by minimizing a cost function that evaluates a distance between the depth-motion and optical-motion vectors.
Total 393 pages