公开(公告)号：US20220236419A1

公开(公告)日：2022-07-28

申请号：US17720837

申请日：2022-04-14

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Min Sun KEEL ,  Gal BITAN ,  Amit ELSENBERG

IPC分类号： G01S17/36 ,  H04N5/335 ,  G01C3/08 ,  G01S7/491 ,  G01S17/894

摘要： A time of flight (ToF) sensor includes: a first pixel including a first photogate to receive light reflected by an object and generate a first phase signal, and a second photogate to generate a second phase signal having a phase difference of 180 degrees with respect to the first phase signal; a second pixel including a third photogate to receive the reflected light and generate a third phase signal different from the first phase signal and a fourth photogate to generate a fourth phase signal having a phase difference of 180 degrees with respect to the third phase signal; a first signal output unit to output the first and second phase signals; and a second signal output unit to output the third and fourth phase signals, wherein the first, second, third and fourth photogates output the first to fourth phase signals during a frame period.

公开(公告)号：US20220128673A1

公开(公告)日：2022-04-28

申请号：US17624685

申请日：2019-07-09

申请人： Siemens Industry Software Netherlands B.V.

发明人： Michael Phillips

IPC分类号： G01S7/497 ,  G01S7/491 ,  G06F30/20

摘要： The disclosure relates to a method for simulating sensor data of a continuous wave (CW) Light Detection and Ranging (lidar) sensor. The method includes generating a ray set comprising at least one ray, based on a CW signal, where each ray in the ray set has an emission starting time and an emission duration. The method further includes propagating, for each ray in the ray set, the ray through a simulated scene including at least one object; computing, for each ray in the ray set, a signal contribution of the propagated ray at a detection location in the simulated scene; generating an output signal, based on mixing the CW signal with the computed signal contributions of the rays in the ray set; and at least one of storing and outputting the output signal.

公开(公告)号：US11226403B2

公开(公告)日：2022-01-18

申请号：US15957974

申请日：2018-04-20

申请人： GM Global Technology Operations LLC

发明人： Keyvan Sayyah ,  Raymond Sarkissian ,  Oleg Efimov ,  Pamela R. Patterson

IPC分类号： G01S7/481 ,  G01S7/4911 ,  G01S17/58 ,  G01S17/34 ,  G01S17/931 ,  G01S17/02 ,  G02B6/122 ,  G02B6/42 ,  H01L31/0232 ,  H01L31/16 ,  G01S17/00 ,  G01S17/32 ,  G01S7/491 ,  G01S17/42 ,  G01S17/86 ,  G01S7/499 ,  G02B6/27 ,  H01L23/544 ,  G01S7/4914 ,  G01S7/497 ,  B81B7/02 ,  G02B27/30 ,  H01S5/125 ,  G01S7/4913 ,  G02B6/00

摘要： A chip-scale coherent lidar system includes a master oscillator integrated on a chip to simultaneously provide a signal for transmission and a local oscillator (LO) signal. The system also includes a beam steering device to direct an output signal obtained from the signal for transmission out of the system, and a combiner on the chip to combine the LO signal and a return signal resulting from a reflection of the output signal by a target. One or more photodetectors obtain a result of interference between the LO signal and the return signal to determine information about the target.

公开(公告)号：US20210358148A1

公开(公告)日：2021-11-18

申请号：US17311225

申请日：2019-12-03

申请人： IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.

发明人： Bruno MIRBACH ,  Harald CLOS ,  Martin BOGUSLAWSKI ,  Thomas SOLIGNAC

IPC分类号： G06T7/521 ,  G06T7/80 ,  G01S7/491 ,  G01S17/894

摘要： A method for corrected depth measurement with a time-of-flight camera using amplitude-modulated continuous light. In order to enable an accurate and efficient depth measurement with a time-of-flight camera, the method includes, for each of a plurality of pixels of a sensor array of the camera: acquiring with the camera a raw depth value rm for the pixel; and automatically calculating a ground truth value rt according to: rt=g(rm−cm)+ct, to correct a systematic depth error of the raw depth value rm, wherein cm is a pixel-dependent first offset, g is a pixel-independent first function and ct is a pixel-independent second offset.

公开(公告)号：US20210124118A1

公开(公告)日：2021-04-29

申请号：US16814601

申请日：2020-03-10

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Keyvan Sayyah ,  Raymond Sarkissian ,  Biqin Huang ,  Pamela R. Patterson

IPC分类号： G02B6/122 ,  G02B6/12 ,  G01S17/88 ,  G01S7/491

摘要： A photonic edge coupler includes a slab waveguide and a ridge waveguide. The ridge waveguide includes a silicon wire waveguide, which includes a tapered portion. A first end of the slab waveguide is joined to the ridge waveguide at a junction, and a second end of the slab waveguide forms a first facet. The ridge waveguide defines a longitudinal axis that is associated with a direction of a light signal therein. The first facet is angled at less than 90 degrees relative to the longitudinal axis associated with the direction of the light signal therein. The first facet is disposed opposite to a laser facet associated with a laser waveguide. The longitudinal axis of the ridge waveguide defines a first center point, and the laser facet and the associated laser waveguide define a second center point. The second center point is laterally offset from the first center point.

公开(公告)号：US20210096253A1

公开(公告)日：2021-04-01

申请号：US17054242

申请日：2019-05-10

申请人： OURS TECHNOLOGY, INC.

发明人： Phillip SANDBORN ,  Sen LIN

IPC分类号： G01S17/58 ,  G01S7/491 ,  G01S17/95

摘要： A LIDAR system and method for determining a distance and a velocity of a target. The LIDAR system can include laser bank (62) is configured to generate a laser field from a first laser beam having a positive frequency sweep and a second laser beam having a negative frequency sweep, an optical combiner (65), an optical coupler (63), a photoreceiver (66), and a control circuit (69). The optical coupler direct a first portion of the laser field at the target such that the first portion is reflected by the target to the optical combiner. The optical combiner can optically combine the portions of the laser field. The output an 1-output (67) and a Q-output (68) according to the optically combined portions of the laser field. The control circuit can determine a nominal beat frequency, which corresponds to the distance of the target, and a frequency shift, which corresponds to the velocity of the target, accordingly.

公开(公告)号：US10955533B2

公开(公告)日：2021-03-23

申请号：US15983141

申请日：2018-05-18

申请人： Konrad GmbH

发明人： Michael Konrad

IPC分类号： G01S7/486 ,  G01S17/89 ,  G01S7/481 ,  G01S7/491 ,  G01S7/4865 ,  G01S7/497 ,  G01S7/4915

摘要： A simulation apparatus for a lidar light measurement system having a lidar light reception sensor (1), wherein a light transmitter (12) is present in the plane of the lidar light reception sensor (2).

公开(公告)号：US20210072389A1

公开(公告)日：2021-03-11

申请号：US16562402

申请日：2019-09-05

申请人： SiLC Technologies, Inc.

发明人： Majid Boloorian ,  Bradley Jonathan Luff ,  Mehdi Asghari

IPC分类号： G01S17/88 ,  G01S7/491 ,  G01S17/02

摘要： The system also includes components that combine contributions from different signals so as to generate composite signals that each carries the LIDAR data. Each composite signal is associated with a polarization state and is also a signal component selected from a quadrature component and an in-phase component. Each of the composite signals is associated with a different combination of polarization state and signal component. The system also includes electronics that combine the composite signals so as to generate an in-phase component of a complex LIDAR data signal and a quadrature component of the LIDAR data signal. The electronics extract the LIDAR data from the complex LIDAR data signal.

公开(公告)号：US20200326563A1

公开(公告)日：2020-10-15

申请号：US16383258

申请日：2019-04-12

申请人： Amazon Technologies, Inc.

发明人： Ryan J. SUESS ,  Joseph Andrew SUMMERS

IPC分类号： G02F1/01 ,  G02F1/03 ,  G01S7/491 ,  G01S7/499 ,  G01S7/481 ,  G01S17/10 ,  G01S17/89

摘要： A light detection and ranging (LIDAR) system with a large field-of-view (FOV) and low operating power includes an intensity modulator, a controller, and one or more camera sensors. The intensity modulator includes a modulating cell that is configured to receive an optical signal and change a polarization state of the optical signal, in response to an electrical signal received from the controller. The modulating cell includes a material that (i) has at least one of a first order electro-optic effect and a second order electro-optic effect and (ii) has an amount of birefringence that is less than or equal to a predefined amount of birefringence. The camera sensor(s) are configured to measure an intensity of the optical signal and determine range information of an object based on the measured intensity.

公开(公告)号：US10795021B2

公开(公告)日：2020-10-06

申请号：US14778918

申请日：2014-03-14

申请人： IEE International Electronics & Engineering S.A.

发明人： Laurent Lamesch ,  Bruno Mirbach

IPC分类号： G01B5/02 ,  G01B5/14 ,  G01B7/02 ,  G01B7/14 ,  G01B11/02 ,  G01B11/14 ,  G01B13/02 ,  G01B21/02 ,  G01C22/00 ,  G01S17/36 ,  G01S7/491 ,  G01S17/89 ,  G01S7/4915 ,  G01C15/00 ,  G01S17/894

摘要： A method for determining a distance comprises: providing at least two phase measurements made with modulated light of different modulation wavelengths, each phase measurement being indicative of the distance up to an integer multiple of a respective modulation wavelength; providing a set of possible wraparound count combinations; for each one of the possible wraparound count combinations, calculating a combination of unwrapped phase hypotheses corresponding to the at least two phase measurements; and selecting a most plausible combination of unwrapped phase hypotheses among the combinations of unwrapped phase hypotheses and calculating the distance based upon the selected most plausible combination of unwrapped phase hypotheses.