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1. WO2020117279 - NON-LINEAR SPRINGS TO UNIFY THE DYNAMIC MOTION OF INDIVIDUAL ELEMENTS IN A MICRO-MIRROR ARRAY

Publication Number WO/2020/117279
Publication Date 11.06.2020
International Application No. PCT/US2018/065041
International Filing Date 11.12.2018
IPC
G02B 26/10 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
G01S 17/93 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
88Lidar systems, specially adapted for specific applications
93for anti-collision purposes
G01S 7/481 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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
481Constructional features, e.g. arrangements of optical elements
CPC
G01S 17/93
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
88Lidar systems specially adapted for specific applications
93for anti-collision purposes
G01S 7/481
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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
481Constructional features, e.g. arrangements of optical elements
G02B 26/10
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
10Scanning systems
Applicants
  • BEIJING VOYAGER TECHNOLOGY CO, LTD. [CN]/[CN]
Inventors
  • ZHOU, Qin
  • WANG, Youmin
Agents
  • EUREK, Justin
Priority Data
16/213,99507.12.2018US
16/213,99707.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NON-LINEAR SPRINGS TO UNIFY THE DYNAMIC MOTION OF INDIVIDUAL ELEMENTS IN A MICRO-MIRROR ARRAY
(FR) RESSORTS NON LINÉAIRES POUR UNIFIER LE MOUVEMENT DYNAMIQUE D'ÉLÉMENTS INDIVIDUELS DANS UN RÉSEAU DE MICROMIROIRS
Abstract
(EN)
An array of micro mirrors is used to beam steer a laser for Light Detection and Ranging (LiDAR) applications. The micro mirrors in the array are driven in a nonlinear motion to synchronize motion. The system comprises a spring, a combdrive actuator with stator and rotor fingers, a shaft, a limiter to limit a range of mirror motion. A method of using the array comprises steps of providing drive signals, determining oscillation of mirrors out of sync, altering the drive signal to change phase difference. The method comprises steps of identifying a steady state of operation and starting to rotate the system at an initial phase to operate at the steady state. The method comprises steps of moving mirrors having first and second steady states of operations and configuring the mirrors to have starting parameters to operate at the first steady state.
(FR)
Un réseau de micromiroirs est utilisé pour diriger un faisceau laser pour des applications de détection de lumière et de télémétrie (LiDAR). Les micromiroirs dans le réseau sont entraînés dans un mouvement non linéaire pour synchroniser le mouvement. Le système comprend un ressort, un actionneur de rayons avec des doigts de stator et de rotor, un arbre, un limiteur pour limiter une plage de mouvement de miroir. Un procédé d'utilisation du réseau comprend les étapes consistant à fournir des signaux d'entraînement, à déterminer une oscillation de miroirs hors de la synchronisation, à modifier le signal d'entraînement pour changer la différence de phase. Le procédé comprend des étapes d'identification d'un état stable de fonctionnement et de démarrage pour faire tourner le système au niveau d'une phase initiale pour fonctionner à l'état stable. Le procédé comprend les étapes consistant à déplacer des miroirs ayant de premier et second états stables de fonctionnement et à configurer les miroirs pour avoir des paramètres de démarrage pour fonctionner au premier état stable.
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