公开(公告)号：US11664811B2

公开(公告)日：2023-05-30

申请号：US16996109

申请日：2020-08-18

申请人： Infineon Technologies AG

发明人： Philipp Stelzer ,  Norbert Druml ,  Christian Steger ,  Andreas Strasser

IPC分类号： G01C3/08 ,  H03L7/099 ,  H03L7/087 ,  G02B26/08 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/931

CPC分类号： H03L7/0992 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/931 ,  G02B26/0833 ,  H03L7/087

摘要： A system for driving a microelectromechanical system (MEMS) oscillating structure includes a phase error detector configured to generate a phase error signal based on measured event times and expected event times of the MEMS oscillating structure oscillating about a rotation axis; a disturbance event detector configured to detect a disturbance event based on the phase error signal and a disturbance threshold value; and a phase frequency detector (PFD) and correction circuit configured to, in response to the detected disturbance event, monitor for a plurality of measured crossing events of the MEMS oscillating structure oscillating about the rotation axis, generate a first compensation signal based on at least a first measured crossing event and a second measured crossing event to correct a frequency of the MEMS oscillating structure, and generate a second compensation signal based on a third measured crossing event to correct a phase of the MEMS oscillating structure.

公开(公告)号：US11650318B2

公开(公告)日：2023-05-16

申请号：US16840873

申请日：2020-04-06

申请人： GM Cruise Holdings LLC

发明人： Ayan Chakrabarty ,  Vladimir Ilchenko ,  Kamel Benboudjema ,  Richard Kalantar Ohanian ,  Patrick Nercessian

IPC分类号： G01C3/08 ,  G01S17/34 ,  G01S17/931 ,  G01S7/4911 ,  G01S7/4912 ,  G01S7/481 ,  G05D1/02

CPC分类号： G01S17/34 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/4911 ,  G01S7/4912 ,  G01S17/931 ,  G05D1/0231 ,  G05D2201/0213

摘要： A system comprises an optical heterodyne device, the optical heterodyne device configured to generate an overlap signal based upon: 1) a first optical signal output by a frequency-modulated continuous-wave (FMCW) laser, wherein the first optical signal comprises an optical frequency chirp that is based upon an input voltage signal received by the FMCW laser; and 2) a second optical signal output by a reference laser. The system also includes a photodetector that is optically coupled to the optical heterodyne device, the photodetector configured to output an electrical beat signal based upon the mixing of the optical signals, wherein the electrical beat signal is representative of the mixed down optical signal. The system further includes a frequency analyzer system that generates, based upon the electrical beat signal, data that is indicative of linearity of the optical frequency chirp in the first optical signal.

公开(公告)号：US11619725B1

公开(公告)日：2023-04-04

申请号：US17920071

申请日：2021-03-31

申请人： MERCEDES-BENZ GROUP AG

发明人： Martin Meinke ,  David Peter ,  Sebastian Buck

IPC分类号： G01C3/08 ,  G01S7/497 ,  G01S17/931 ,  G01S17/48

摘要： Blooming in a lidar measurement is recognized using a distance from a lidar reflection point determined in an active measurement and a passive measurement. A first distance value is determined in the active measurement, based on a signal duration of a laser pulse, and a second distance value is determined in the passive measurement, based on a triangulation of two-dimensional intensity measurements carried out from different measuring positions. Blooming is identified when the second distance value exceeds the first distance value by a pre-determined amount.

公开(公告)号：US20230092686A1

公开(公告)日：2023-03-23

申请号：US17572082

申请日：2022-01-10

申请人： Hydro Extrusion USA, LLC

发明人： Edward J. Vinarcik ,  Michael Zajac ,  Daniel Biorn

IPC分类号： G01B11/02 ,  G01S17/48 ,  G01C3/08

摘要： A system for measuring a length of a work piece including a leveling fixture disposed at a first end of the work piece and a range target disposed at a second end. The leveling fixture includes a precision stop abutting against the first end and range finders configured to be substantially aligned with the first end. The range target includes a target stop abutting against the second end and a vertical portion substantially aligned with the second end when the target stop abuts the second end. The range finders are each configured to take measurements between the range finders and the vertical portion of the range target so as to provide a measurement of the length of the work piece.

公开(公告)号：US11609338B2

公开(公告)日：2023-03-21

申请号：US16803505

申请日：2020-02-27

申请人： Jena-Optronik GmbH

发明人： Uwe Schmidt ,  Thorben Haarlammert

IPC分类号： G01C3/08 ,  G01S17/933 ,  G01S7/48 ,  G01S7/4863

摘要： A method for detecting incident laser radiation on a spacecraft, whereby incident radiation is detected separately in several discrete spectral ranges, the radiation recorded in the spectral ranges is converted into further processable electrical signals, and the signals are evaluated together. A device for detecting incident laser radiation on a spacecraft is configured to perform such a method.

公开(公告)号：US11604277B2

公开(公告)日：2023-03-14

申请号：US17334292

申请日：2021-05-28

申请人： VayaVision Sensing, Ltd.

发明人： Youval Nehmadi ,  Shmuel Ur ,  Ronny Cohen

IPC分类号： G01S17/89 ,  G01S7/481 ,  G01S17/931 ,  G01S17/02 ,  G01S17/08 ,  G01C21/36 ,  G01S17/86 ,  B60R11/04 ,  G01S7/497 ,  G01S19/03 ,  G06K7/10 ,  G06T17/05 ,  G06V10/141 ,  G06V10/75 ,  G06V20/56 ,  G06V20/58 ,  G06V20/64 ,  G06T7/20 ,  G01C3/08 ,  G01S17/42 ,  G05D1/00 ,  G06K9/62 ,  G06T15/00 ,  G01C21/26

摘要： An active sensor for performing active measurements of a scene is presented. The active sensor includes at least one transmitter configured to emit light pulses toward at least one target object in the scene, wherein the at least one target object is recognized in an image acquired by a passive sensor; at least one receiver configured to detect light pulses reflected from the at least one target object; a controller configured to control an energy level, a direction, and a timing of each light pulse emitted by the transmitter, wherein the controller is further configured to control at least the direction for detecting each of the reflected light pulses; and a distance measurement circuit configured to measure a distance to each of the at least one target object based on the emitted light pulses and the detected light pulses.

公开(公告)号：US11604064B2

公开(公告)日：2023-03-14

申请号：US16819296

申请日：2020-03-16

申请人： Sintai Optical (Shenzhen) Co., Ltd. ,  Asia Optical Co., Inc.

发明人： Fang-Li Ma ,  Yue-Ye Chen ,  Bin Liu ,  Jun-Wei Che ,  We-Jie Lou ,  Hua-Tang Liu

IPC分类号： G01C3/08 ,  G02B27/14 ,  G02B5/04

摘要： A lens assembly for display includes a display, a lens assembly, and a prism assembly. The display emits a first light beam. The prism assembly includes a first, second prisms, and an optical multilayer film, wherein the first prism includes a first, second, and third surfaces; the second prism includes a fourth, fifth, sixth, seventh, and eighth surfaces; and the optical multilayer film is disposed between the third and fifth surfaces. A second light beam enters the first prism through the first surface and exits by the second surface. The first light beam exits the lens assembly and enters the second prism through the eighth surface, and exits the first prism by the second surface. The lens assembly and the prism assembly satisfy: 0.80%≤E1/E0≤0.95%; wherein E0 is an energy of the first light beam emitted from the display and E1 is an energy of the first light beam passes through the lens assembly.

公开(公告)号：US11598933B2

公开(公告)日：2023-03-07

申请号：US16655520

申请日：2019-10-17

申请人： Samsung Electronics Co., Ltd.

发明人： Dongwoo Kim ,  Changhan Kim

IPC分类号： G02B13/00 ,  G02B5/20 ,  G01C3/08 ,  G02B9/34 ,  H04N5/225 ,  G02B9/60 ,  H04N5/235 ,  G06T7/586 ,  H04N5/232 ,  G06V20/10 ,  G06V40/10

摘要： A disclosed lens assembly may include at least four lenses sequentially arranged along an optical axis from a subject to an image sensor. Among the at least four lenses, a first lens disposed closest to the subject may have a visible light transmittance ranging from 0% to 5%, and, among subject-side surfaces and image-sensor-side surfaces of remaining lenses other than the first lens, at least four surfaces may include an inflection point. The lens assembly or an electronic device including the lens assembly may be variously implemented according to embodiments.

公开(公告)号：US11598850B2

公开(公告)日：2023-03-07

申请号：US16462980

申请日：2017-11-30

申请人： Sony Semiconductor Solutions Corporation

发明人： Daniel Van Nieuwenhove ,  Ward Van Der Tempel

IPC分类号： G01C3/08 ,  G01S7/481 ,  G01S7/486 ,  H01L25/16 ,  H01L27/15 ,  H01S5/042 ,  H01S5/42 ,  H01L27/146 ,  G01S17/894 ,  H01S5/00 ,  H01S5/0234 ,  H01S5/02345

摘要： An apparatus has an illumination layer having an array of a plurality of illuminators, and a circuit layer having one or more drivers for controlling the plurality of illuminators. The laser layer and the circuit layer overlap at least partially, and each driver of the one or more drivers controls at least one illuminator of the plurality of illuminators.

公开(公告)号：US11592561B2

公开(公告)日：2023-02-28

申请号：US16349180

申请日：2017-10-30

申请人： Robert Bosch GmbH

发明人： Thomas Fersch

IPC分类号： G01C3/08 ,  G01S17/32 ,  G01S7/48 ,  G01S7/4911 ,  G01S17/10 ,  G01S17/42

摘要： A LIDAR system is described for detecting surroundings, including a laser light source for emitting a laser light, a receiving device for receiving a laser light reflected by the surroundings, and a control device for activating the laser light source, the control device being configured to activate the laser light source for emitting a continuous light beam and to continually modulate the emitted light beam, so that the light beam includes a multitude of successive codes.