An apparatus is used in a LIDAR system. The apparatus comprises a transmitting path. The transmitting path comprises a laser, a polarizing beam splitter (PBS), and a beam-steering device. The laser emits a plurality of beams. The PBS splits the plurality of beams into a first plurality of beams each of which has a first polarization and a second plurality of beams each of which has a second polarization and to generate the second plurality of beams in a second field of view (FOV). The beam-steering device receives the first plurality of beams and steers the first plurality of beams in a first FOV.
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
G01S 7/499 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant des effets de polarisation
2.
APPARATUS FOR POLARIZATION CONTROL IN LIDAR SYSTEM
An apparatus is used in a LIDAR system. The apparatus comprises a laser, a first optical device, and a beam-steering device. The laser emits a plurality of beams including a first set of beams each of which has a first polarization and a second set of beams each of which has a second polarization. The first polarization is different from the second polarization. The first optical device receives the plurality of emitted beams and generates a plurality of beams each of which has a polarization that is identical for each of the generated beams. The beam-steering device receives the plurality of generated beams each having the polarization and steers each of the plurality of generated beams to a respective direction.
G01S 7/499 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant des effets de polarisation
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
A method of operating a computer to build a customized training dataset for training an artificial intelligence (AI) platform, comprising: a) obtaining (i) specifications of training data for training the AI platform and (ii) data indicative of a proposed usage of the training data; b) consulting a database of training datasets, each associated with use rights, to identify a candidate set of training datasets matching the specifications; and c) authorizing release of a subset of the training datasets in the candidate set of training datasets based on the data indicative of the proposed usage of the AI training data and the use rights associated with the training data sets in the candidate set of training datasets.
G06F 21/62 - Protection de l’accès à des données via une plate-forme, p.ex. par clés ou règles de contrôle de l’accès
G06V 20/58 - Reconnaissance d’objets en mouvement ou d’obstacles, p.ex. véhicules ou piétons; Reconnaissance des objets de la circulation, p.ex. signalisation routière, feux de signalisation ou routes
4.
BEAM STEERING SYSTEM WITH A CONFIGURABLE BEAM DEFLECTION ELEMENT
An apparatus for use in a light detection and ranging (LIDAR) system is provided. The apparatus comprises a transmitting stage configured to generate a light beam; a beam steering element configured to selectively provide a plurality of interaction modes each of which corresponds to a respective beam divergence of a deflected light beam. The beam steering element includes a deflector configured to receive the light beam and to produce the deflected light beam. The deflector includes a plurality of surfaces and is configured to be rotatable with respect to a pivot such that a respective one of the plurality of interaction modes is selectively enabled by positioning a selective surface of the plurality of surfaces to receive the light beam and to reflect the deflected light beam at a corresponding beam divergence. Because the deflector is rotatable to receive incident lights, various divergences the LIDAR system could be achieved.
An optical system is provided. The optical system a transmitting path configured to generate a light beam to illuminate objects in a field of view (FOV). The transmitting path including: a light source configured to generate the light beam which has a laser beam central wavelength (LBCWL); a bandpass filter configured to receive the light beam and filter out wavelength bands of the light beam that fall outside a bandpass filter central wavelength (BFCWL); a detector configured to detect a characteristic of the filtered light beam; a processor configured to determine that the LBCWL mismatches the BFCWL based on the detected characteristic, and configured to vary at least one operational parameter of the light source and the bandpass filter such that at least one of the LBCWL and the BFCWL is shifted to match with respect to each other..
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p.ex. fréquence ou amplitude
G01S 7/48 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe
H10N 10/10 - Dispositifs thermoélectriques comportant une jonction de matériaux différents, c. à d. dispositifs présentant l'effet Seebeck ou l'effet Peltier fonctionnant exclusivement par les effets Peltier ou Seebeck
6.
BEAM-STEERING DEVICES AND METHODS FOR LIDAR APPLICATIONS
An apparatus for use in a light detection and ranging (LIDAR) system is provided. The apparatus comprises: a transmitting path including: a light source configured to emit a light beam; a two-dimensional (2D) beam splitter configured to separate the light beam to a plurality of light beams, wherein each of the plurality of light beams has an identical optical power to the other one of the plurality of light beams; and a beam steering device configured to steer each of the plurality of light beams in a respective field of view (FOV). The 2D beam splitter includes at least two arrays of rhomboid beam splitters which are attached together.
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
G01S 7/499 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant des effets de polarisation
G01S 17/88 - Systèmes lidar, spécialement adaptés pour des applications spécifiques
7.
BEAM-STEERING DEVICE PARTICULARLY FOR LIDAR SYSTEMS
A beam-steering engine, comprising an optical element switchable between a first operational mode and a second operational mode, in the first operational mode of the optical element the beam-steering engine is configured to output an input light beam incident on the beam-steering engine along a first propagation direction and in the second operational mode of the optical element the beam-steering engine is configured to output the input light beam incident on the beam-steering engine along a second propagation direction. A transition of the optical element between the first and second operational modes is characterized by a transition time period that varies with a temperature of the optical element. The beam-steering engine further includes a device to control a temperature of the solid-state optical element to maintain the transition time period below a certain limit.
Methods and systems for wide-angle LiDAR are provided that utilize magnification optics that provide non-uniform resolution in different areas of a Field of View (FoV).
G02F 1/13 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
G06T 11/60 - Edition de figures et de texte; Combinaison de figures ou de texte
A LIDAR apparatus for scanning a scene is provided that includes a transmitter stage, a receiver stage, a beam-steering engine configured to steer the light beam received from the transmitter stage in different directions to scan at least a portion of the scene. The beam-steering engine is responsive to steering commands to produce corresponding deflections of the light beam.
B81B 5/00 - Dispositifs comportant des éléments mobiles les uns par rapport aux autres, p.ex. comportant des éléments coulissants ou rotatifs
G01S 17/08 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement
G01S 7/481 - Caractéristiques de structure, p.ex. agencements d'éléments optiques
G01S 7/487 - Extraction des signaux d'écho désirés
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
G02B 27/28 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour polariser
H01L 31/107 - Dispositifs sensibles au rayonnement infrarouge, visible ou ultraviolet caractérisés par une seule barrière de potentiel ou de surface la barrière de potentiel fonctionnant en régime d'avalanche, p.ex. photodiode à avalanche
10.
BEAM-STEERING DEVICE PARTICULARLY FOR LIDAR SYSTEMS
A LIDAR apparatus for scanning a scene, comprising a transmitter stage, a receiver stage, a beam-steering engine configured to steer the light beam received from the transmitter stage in different directions to scan at least a portion of the scene, the beam-steering engine being responsive to steering commands to produce corresponding deflections of the light beam and an operation monitor for monitoring a beam-steering function of the beam-steering engine.
There is provided a method for optically scanning a region according to a plurality of scanning directions, comprising: receiving an interleave sequence defining a scanning order for the plurality of scanning directions; sequentially propagating optical pulses according to the interleave sequence; detecting pulse echoes corresponding to a reflection of the propagated optical pulses on at least one object present within the region; and outputting the detected pulse echoes. There is further described a computer- implemented method for correcting a temporal slippage of an optical echo.
G01S 7/483 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe - Détails de systèmes à impulsions
G01S 7/487 - Extraction des signaux d'écho désirés
12.
INTRINSIC STATIC NOISE CHARACTERIZATION AND REMOVAL
A computer-implemented method and a system for at least partially removing intrinsic static noise from data obtained by an optical time-of-flight sensor using full-waveform analysis. The method includes receiving a plurality of calibration traces, the calibration traces being obtained in a controlled environment wherein no object is present in a field of view of the optical time-of-flight sensor; determining a noise template using the calibration traces by performing a statistical analysis on the calibration traces to determine a shape and an amplitude of the intrinsic static noise in the calibration traces; receiving a normal operation trace, the normal operation trace being obtained in an uncontrolled environment wherein a presence of the object in the field of view is unknown; subtracting the noise template from the normal operation trace, obtaining and outputting a denoised signal.
Computer-implemented methods and systems for at least partially removing extrinsic static noise from data obtained by an optical time-of-flight sensor using full-waveform analysis. The method comprises finding a mathematical representation of the electromagnetic crosstalk present in victim calibration traces and caused by aggressor photosensitive element using aggressor calibration traces and victim calibration traces, determining a predetermined threshold for the amplitude of the aggressor calibration trace at which the electromagnetic crosstalk is present in the victim calibration traces, predicting the extrinsic static noise generated by the aggressor signal on the synchronized victim operation trace using the mathematical representation to generate a predicted crosstalk signal, removing the predicted crosstalk signal from the synchronized victim operation trace to output a denoised signal. The system comprises an identification and parameter estimation unit, a peak detection unit and a crosstalk prediction unit. An optional saturated summit completion unit can be provided.
A method and system for the detection of an object in a detection zone for a scannerless optical rangefinder operating in pulsed Time-Of-Flight operation are described. The method comprises pulsating a light source to illuminate the detection zone using an emission beam; receiving a reflection from the detection zone, collecting the reflection using an optical detector and generating a reflection signal; discretizing the detection zone to create a predetermined detection pattern in the detection zone, the predetermined detection pattern being one of regular, uniform and random, the predetermined detection pattern including passive areas and discrete active detection areas within the detection zone; detecting an object in one of the discrete active detection areas by comparing a change in the reflection signal with a background signal.
G01S 17/02 - Systèmes utilisant la réflexion d'ondes électromagnétiques autres que les ondes radio
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
G01S 17/88 - Systèmes lidar, spécialement adaptés pour des applications spécifiques
15.
SYSTEM AND METHOD FOR MULTIPURPOSE TRAFFIC DETECTION AND CHARACTERIZATION
A method for tracking and characterizing a plurality of vehicles simultaneously in a traffic control environment, comprising: providing a 3D optical emitter; providing a 3D optical receiver with a wide and deep field of view; driving the 3D optical emitter into emitting short light pulses; receiving a reflection/backscatter of the emitted light, thereby acquiring an individual digital full-waveform LIDAR trace for each detection channel of the 3D optical receiver; using the individual digital full-waveform LIDAR trace and the emitted light waveform, detecting a presence of a plurality of vehicles, a position of at least part of each vehicle and a time at which the position is detected; assigning a unique identifier to each vehicle; repeating the steps of driving, receiving, acquiring and detecting, at a predetermined frequency; tracking and recording an updated position of each vehicle and an updated time at which the updated position is detected.
A method for detecting a vehicle comprising: providing a multi-channel scannerless full-waveform lidar system operating in pulsed Time-Of-Flight operation oriented towards a surface of the roadway to cover the detection zone; providing at least one initialization parameter; emitting pulses at an emission frequency; receiving reflections of the pulses from the detection zone; and acquiring and digitalizing a series of individual complete traces at each channel of system; identifying at least one detection in at least one of the traces; obtaining a height and an intensity for the detection; determining a nature of the detection to be one of an environmental particle detection, a candidate object detection and a roadway surface detection; if the nature of the detection is the candidate object detection, detecting a presence of a vehicle in the detection zone.
G08G 1/04 - Détection du mouvement du trafic pour le comptage ou la commande utilisant des détecteurs optiques ou ultrasonores
G08G 1/048 - Détection du mouvement du trafic pour le comptage ou la commande avec des dispositions pour compenser les conditions ambiantes ou d'autres paramètres, p.ex. la neige, un véhicule arrêté à un détecteur
G01S 17/02 - Systèmes utilisant la réflexion d'ondes électromagnétiques autres que les ondes radio
A multiple-field-of-view scannerless optical rangefinder operating in pulsed Time-Of-Flight operation for use in high ambient background light is described. The rangefinder comprises an optical emitter having a LED light source and driver electronics, emitting a train of light pulses having a broad field-of-illumination (FOI); a multi-channel optical receiver (MCOR) for detecting optical return signals, an overall field-of-view (FOV) encompassing each channel instantaneous FOV, the FOI encompassing the overall FOV, the multi-channel optical receiver having analog front-end electronics; an Analog-to-Digital Converter (ADC) for receiving and converting the waveforms into digital format; a control and processing unit (CPU) for generating a pulse trigger signal, sending a synchronization trigger signal to the MCOR for starting the detection of the optical return signals, and for processing the waveforms in digital format; a data interface; wherein a peak present in any of waveforms is a signature of an object detected within the instantaneous FOV.
A mobile storage having a mobile storage unit extending along a longitudinal axis, having a detection side; an opposing component extending substantially parallel to the longitudinal axis, having an aisle side facing the detection side of the mobile storage unit; the mobile storage unit being movable between a closed position wherein the detection side of the mobile storage unit and the aisle side of the opposing component are juxtaposed and an open position wherein the mobile storage unit and the opposing component are spaced-apart and a longitudinally extending aisle is defined therebetween; the mobile storage having at least one detection module having an optical pulse emitter and an optical detector both provided at an end of one of the detection side of the mobile storage unit and the aisle side of the opposing component, facing the aisle, the optical pulse emitter emitting a light pulse in a field-of-illumination, the optical detector detecting a reflection of the light pulse in a field-of-view, the field-of-illumination and the field-of- view being adapted to at least partly overlap and to cover at least a portion of a width of the aisle. An object detection method for a mobile storage comprising receiving a temporal reflection signal from an optical detector; storing the temporal reflection signal; retrieving a background temporal reflection signal; comparing the temporal reflection signal to the background temporal reflection signal to detect the presence of an object in the temporal reflection signal; indicating a status of the aisle to be presence of an object if the object is detected to be present.
A47B 96/00 - TABLES; BUREAUX; MOBILIER DE BUREAU; MEUBLES À TIROIRS; TIROIRS; PARTIES CONSTITUTIVES GÉNÉRALES DES MEUBLES - Parties constitutives des meubles à tiroirs, étagères ou rayons non couvertes par un seul des groupes ; Eléments généraux de meubles
A47B 53/00 - Meubles à tiroirs ou étagères à plusieurs sections placées l'une derrière l'autre; Ensembles de meubles à tiroirs ou étagères
B65G 1/10 - Dispositifs d'emmagasinage mécaniques avec supports relativement mobiles pour faciliter l'insertion ou l'enlèvement des objets
There is provided a system and a method for detecting the presence of an object in a detection zone using a traffic detection system. The traffic detection system includes an optical unit having an emitter module emitting pulses within a predetermined field of emission; a receiver module receiving a part of the pulses reflected by an object in the field of emission toward a field of view of the receiver module, the field of view including a plurality of adjacent detection channels, the receiver module acquiring and converting the received pulses into a corresponding plurality of a digital signal waveforms; an image sensing module providing an image that encompasses the field of emission of the emitter module and the field of view of the receiver module. The method comprises providing a status overlay image for the field of view including the image and a visual indication on the image of an outline of the plurality of adjacent detection channels; positioning the field of view of the receiver module to cover the detection zone using the status overlay image; obtaining the plurality of digital signal waveforms using the traffic detection system; detecting a signal echo in one of the digital signal waveforms at a position within the field of view, the signal echo being caused by the presence of the object in the field of view; determining a location in the field of view for the object using the position; storing the location for the object.
G08G 1/04 - Détection du mouvement du trafic pour le comptage ou la commande utilisant des détecteurs optiques ou ultrasonores
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
G01S 17/88 - Systèmes lidar, spécialement adaptés pour des applications spécifiques
A method and system for determining a level of a substance in a container, the method comprises emitting one pulse from a light source in a field of illumination toward a surface of said substance in said container. A backscatter signal of said pulse is detected by an optical detector. A lidar trace is created from said backscatter signal, said lidar trace including at least one reflection peak; A surface reflection is identified among said at least one reflection peak in said lidar trace, said surface reflection being a reflection of said pulse from said surface. The surface reflection is signal-fitted to provide a fitted surface trace. A level of said substance is determined in said container using said fitted surface trace.
G01S 17/88 - Systèmes lidar, spécialement adaptés pour des applications spécifiques
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
21.
PARKING MANAGEMENT SYSTEM AND METHOD USING LIGHTING SYSTEM
A system and a method for detecting availability of a parking space in a parking facility are provided. A first method has the steps of providing a lighting system having at least one visible-light source for illumination of at least part of the parking space. Providing an available space time-of-flight trace. Providing an availability threshold value. Illuminating the at least part of the parking space using the at least one visible-light source. Emitting a status visible-light signal from the visible-light source in the predetermined direction toward the predetermined target in the parking space. Capturing a status reflection trace at the visible-light source. Determining a time-of-flight difference value by comparing the status reflection trace to the available space time-of-flight trace. Comparing the time-of-flight difference value with the availability threshold value and determining a status of the parking space to be one of available and not available. Another method has the steps of providing a lighting system having at least one visible-light source for illumination of at least part of the parking space. Providing a camera. Providing an available space region value. Providing an availability threshold value. Illuminating the at least part of the parking space using the at least one visible-light source. Emitting visible light from the visible-light source in the predetermined direction to the predetermined target in the parking space. Capturing a reflection of the emitted visible light at the camera and determining a status region value. Determining a region difference value by comparing the status region value to the available space region value. Comparing the region difference value with the availability threshold value and determining a status of the parking space to be one of available and not available.
There is provided a system and a method for acquiring a detected light optical signal and generating an accumulated digital trace The method comprises providing a light source for illumination of a field of view, an optical detector, an analog-to-digital converter (ADC), emitting one pulse from the light source in the field of view, detecting a reflection signal of the pulse by the optical detector, acquiring j points for the detected reflection signal by the ADC, storing, in a buffer, the digital signal waveform of j points, introducing a phase shift of 2pi / P, repeating, P times, the steps of emitting, detecting, acquiring, storing and introducing, to store, in the buffer, an interleaved waveform of P x j points, accumulating M traces of interleaved P x j points for a total of N = M x P acquisition sets, N being a total number of pulses emitted, creating one combined trace of the reflected signal of j x P points by adding each point of the M traces Additionally, the combined trace can be compared to a detected reference reflection signal of the pulse to determine a distance traveled by the pulse
G01S 17/02 - Systèmes utilisant la réflexion d'ondes électromagnétiques autres que les ondes radio
G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
23.
LIGHTING SYSTEM WITH DRIVER ASSISTANCE CAPABILITIES
The present application adds detection capabilities to perceive the presence and/or measure the velocity of obstacles such as automobiles, trucks, pedestrian and other users, to vehicle lighting modules as headlamp, tail lamps, centre high mount stop lamp (CHMSL) and interior lighting to name a few, for driver assistance applications like adaptive cruise control, blind spot and pre-crash assist. For example, a Light Emitting Diode (LED) has the capability to be used as lighting source for illumination as a first function and also be pulsed or modulated as a source for the detection sub-system as a second function.
G01S 17/93 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour prévenir les collisions
B60R 21/0134 - Circuits électriques pour déclencher le fonctionnement des dispositions de sécurité en cas d'accident, ou d'accident imminent, de véhicule comportant des moyens pour détecter les collisions, les collisions imminentes ou un renversement réagissant à un contact imminent avec un obstacle
The present lighting system adds detection capabilities to perceive the presence and measure the velocity of objects such as automobiles, trucks, pedestrian and other users, to lighting modules for transportation applications like traffic signal, pedestrian control, rails signal, street light, message board and speed monitoring board. For example, a Light Emitting Diode (LED) has the capability to be used as lighting source for illumination as a first function and also be pulsed or modulated as a source for the detection sub-system as a second function.
brevets
