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1. WO2020092120 - MIRROR ASSEMBLY

Publication Number WO/2020/092120
Publication Date 07.05.2020
International Application No. PCT/US2019/057843
International Filing Date 24.10.2019
IPC
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
G01S 17/89 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
89for mapping or imaging
G01S 17/42 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
42Simultaneous measurement of distance and other coordinates
G02B 26/12 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
12using multifaceted mirrors
Applicants
  • WAYMO LLC [US]/[US]
Inventors
  • GASSEND, Blaise
  • DROZ, Pierre-Yves
  • INGRAM, Benjamin, T.
Agents
  • GIN, Aaron, V.
Priority Data
16/229,18221.12.2018US
62/755,39802.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MIRROR ASSEMBLY
(FR) ENSEMBLE MIROIR
Abstract
(EN)
The present disclosure relates to optical systems, specifically light detection and ranging (LIDAR) systems. An example optical system includes a laser light source operable to emit laser light along a first axis and a mirror element with a plurality of reflective surfaces. The mirror element is configured to rotate about a second axis. The plurality of reflective surfaces is disposed about the second axis. The mirror element and the laser light source are coupled to a base structure, which is configured to rotate about a third axis. While the rotational angle of the mirror element is within an angular range, the emitted laser light interacts with both a first reflective surface and a second reflective surface of the plurality of reflective surfaces and is reflected into the environment by the first and second reflective surfaces.
(FR)
La présente invention concerne des systèmes optiques, plus particulièrement des systèmes de détection et télémétrie par ondes lumineuses (lidar). Un système optique donné à titre d'exemple comprend une source de lumière laser permettant d'émettre une lumière laser le long d'un premier axe et un élément miroir possédant une pluralité de surfaces réfléchissantes. L'élément miroir est conçu pour tourner autour d'un deuxième axe. La pluralité de surfaces réfléchissantes est disposée autour du deuxième axe. L'élément miroir et la source de lumière laser sont couplés à une structure de base conçue pour tourner autour d'un troisième axe. Pendant que l'angle de rotation de l'élément miroir se trouve dans une plage angulaire, la lumière laser émise interagit à la fois avec une première surface réfléchissante et une deuxième surface réfléchissante de la pluralité de surfaces réfléchissantes et est réfléchie dans l'environnement par les première et deuxième surfaces réfléchissantes.
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