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1. WO2020205450 - SWITCHABLE COHERENT PIXEL ARRAY FOR FREQUENCY MODULATED CONTINUOUS WAVE LIGHT DETECTION AND RANGING

Publication Number WO/2020/205450
Publication Date 08.10.2020
International Application No. PCT/US2020/025042
International Filing Date 26.03.2020
IPC
G01S 13/34 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
08Systems for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
34using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
G01S 17/34 2020.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
08for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
34using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
G01S 17/06 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
G01S 13/58 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
50Systems of measurement based on relative movement of target
58Velocity or trajectory determination systems; Sense-of-movement determination systems
G01S 17/58 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
50Systems of measurement based on relative movement of target
58Velocity or trajectory determination systems; Sense-of-movement determination systems
G02B 6/35 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
35having switching means
Applicants
  • OURS TECHNOLOGY INC. [US]/[US]
Inventors
  • LIN, Sen
  • HOSSEINI, Amir
  • MICHAELS, Andrew, Steil
Agents
  • CATHEY, Charles, D.
  • BALASUBRAMANYAM, Poornima
  • AMSLE, Jason
  • AVANTSA, Akshay
  • AHN, Dohyun
Priority Data
62/826,52829.03.2019US
62/826,53629.03.2019US
62/845,14708.05.2019US
62/845,14908.05.2019US
62/849,80717.05.2019US
62/940,79026.11.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SWITCHABLE COHERENT PIXEL ARRAY FOR FREQUENCY MODULATED CONTINUOUS WAVE LIGHT DETECTION AND RANGING
(FR) RÉSEAU DE PIXELS COHÉRENTS COMMUTABLES POUR LA DÉTECTION ET LA TÉLÉMÉTRIE DE LUMIÈRE À ONDE ENTRETENUE MODULÉE EN FRÉQUENCE
Abstract
(EN)
A FMCW LiDAR transceiver includes an input port, optical antennas, an optical switch, splitters, and mixers. The optical switch switchably couples an input port to the optical antennas, thereby forming optical paths between the input port and the optical antennas. For each optical path from the input port to one of the optical antennas, a splitter is coupled along the optical path. The splitter splits a received portion of a laser signal into a local oscillator signal and a transmitted signal and outputs a return signal that is a portion of the reflected signal. The transmitted signal is emitted via the optical antenna and a reflection of the transmitted signal is received via the optical antenna as a reflected signal. For each splitter, a mixer receives the return signal and the local oscillator signal and mixes the return signal and the local oscillator signal to generate output signals.
(FR)
Un émetteur-récepteur LiDAR FMCW comprend un port d'entrée, des antennes optiques, un commutateur optique, des séparateurs et des mélangeurs. Le commutateur optique couple de manière commutable un port d'entrée aux antennes optiques, formant ainsi des chemins optiques entre le port d'entrée et les antennes optiques. Pour chaque trajet optique allant du port d'entrée à l'une des antennes optiques, un séparateur est couplé le long du chemin optique. Le séparateur divise une partie reçue d'un signal laser en un signal d'oscillateur local et un signal émis et produit un signal de retour qui est une partie du signal réfléchi. Le signal transmis est émis par l'antenne optique et une réflexion du signal transmis est reçue par l'intermédiaire de l'antenne optique comme un signal réfléchi. Pour chaque séparateur, un mélangeur reçoit le signal de retour et le signal de l'oscillateur local et mélange le signal de retour et le signal de l'oscillateur local pour générer des signaux de sortie.
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