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1. WO2022001493 - THREE-DIMENSIONAL IMAGING SYSTEM, AND METHOD

Publication Number WO/2022/001493
Publication Date 06.01.2022
International Application No. PCT/CN2021/095666
International Filing Date 25.05.2021
IPC
G01B 11/24 2006.1
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
24for measuring contours or curvatures
G02F 1/03 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
03based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
G02F 1/11 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
11based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
G02F 1/13 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
Applicants
  • 睿镞科技(北京)有限责任公司 RAYZ TECHNOLOGIES CO. LTD. [CN]/[CN]
Inventors
  • 杜德涛 DU, Detao
  • 陈如新 CHEN, Ruxin
Agents
  • 北京英赛嘉华知识产权代理有限责任公司 INSIGHT INTELLECTUAL PROPERTY LIMITED
Priority Data
202010630512.103.07.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) THREE-DIMENSIONAL IMAGING SYSTEM, AND METHOD
(FR) SYSTÈME D'IMAGERIE TRIDIMENSIONNELLE ET PROCÉDÉ
(ZH) 三维成像系统及方法
Abstract
(EN) Disclosed is a three-dimensional imaging system. The system comprises: an optical emitter that emits an optical pulse to a target scene; an optical modulator that modulates the optical state of at least part of the optical pulse emitted from the optical emitter and/or of at least part of an optical pulse returned from the target scene; an optical element array that receives a modulated return part, wherein at least within a first preset time range before the emission of the optical pulse and/or within a second preset time range after the emission of the optical pulse, the optical element array has the function of transmitting at least three beams of light, the optical states of which are different from each other; a photoelectric detector that comprises an imaging lens, and receives an optical signal passing through the optical element array and converts the received optical signal into an electrical signal; and a controller, wherein the controller applies a control to the optical modulator by means of a circuit, the optical modulator modulates the optical state of the optical pulse into a function of time on the basis of the control, and the controller calculates a distance and/or a relative light intensity on the basis of the electrical signal and the applied control.
(FR) Est divulgué un système d'imagerie tridimensionnelle. Le système comprend : un émetteur optique qui émet une impulsion optique vers une scène cible ; un modulateur optique qui module l'état optique d'au moins une partie de l'impulsion optique émise par l'émetteur optique et/ou d'au moins une partie d'une impulsion optique renvoyée par la scène cible ; un réseau d'éléments optiques qui reçoit une partie de retour modulée, le réseau d'éléments optiques possédant, au moins dans une première plage temporelle prédéfinie avant l'émission de l'impulsion optique et/ou dans une seconde plage temporelle prédéfinie après l'émission de l'impulsion optique, la fonction d'émettre au moins trois faisceaux de lumière, dont les états optiques sont différents les uns des autres ; un détecteur photoélectrique qui comprend une lentille d'imagerie, et reçoit un signal optique traversant le réseau d'éléments optiques et convertit le signal optique reçu en un signal électrique ; et un dispositif de commande, le dispositif de commande appliquant une commande au modulateur optique au moyen d'un circuit, le modulateur optique modulant l'état optique de l'impulsion optique en fonction temporelle en fonction de la commande, et le dispositif de commande calculant une distance et/ou une intensité de lumière relative en fonction du signal électrique et de la commande appliquée.
(ZH) 本申请公开了一种三维成像系统,包括:光学发射器,向目标场景发射光脉冲;光学调制器,对至少一部分从光学发射器发射的光脉冲和/或从目标场景返回的光脉冲的光学状态进行调制;光学元件阵列,接收经调制的返回部分,其中,至少在光脉冲发射前的第一预设时间范围内和/或光脉冲发射后的第二预设时间范围内,光学元件阵列具有传输至少三个彼此不同光学状态的光的功能;光电探测器,包括成像透镜,接收通过光学元件阵列的光信号,并将所接收到的光信号转换为电信号;以及控制器,控制器通过电路向光学调制器施加控制,光学调制器基于控制将光脉冲的光学状态调制为时间的函数,并且控制器基于电信号和所施加的控制计算距离和/或相对光强。
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