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1. WO2020117785 - VERTICAL CAVITY SURFACE EMITTING LASER-BASED PROJECTOR

Publication Number WO/2020/117785
Publication Date 11.06.2020
International Application No. PCT/US2019/064211
International Filing Date 03.12.2019
IPC
G01S 7/497 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
497Means for monitoring or calibrating
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 7/491 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
491Details of non-pulse systems
H01S 5/42 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02-H01S5/30128
42Arrays of surface emitting lasers
CPC
G01S 17/08
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
G01S 7/4814
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
4814of transmitters alone
G02B 27/0037
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
0025for optical correction, e.g. distorsion, aberration
0037with diffracting elements
Applicants
  • MAGIK EYE INC. [US]/[US]
Inventors
  • KIMURA, Akiteru
Agents
  • REA, Diana
Priority Data
62/777,08308.12.2018US
62/780,23015.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VERTICAL CAVITY SURFACE EMITTING LASER-BASED PROJECTOR
(FR) PROJECTEUR BASÉ SUR UN LASER À CAVITÉ VERTICALE À ÉMISSION PAR LA SURFACE
Abstract
(EN)
In one example, a distance sensor includes a projection system,. A light receiving system, and a processor. The projection system includes a plurality of laser light sources arranged in an array to emit a plurality of beams of light that forms a grid-shaped projection pattern when the plurality of beams of light is incident on a surface and a compensation optic to minimize a magnification-induced curvilinear distortion of the grid-shaped projection pattern before the plurality of beams of light is incident on the surface. The light receiving system captures an image of the grid-shaped projection pattern on the surface. The processor calculates a distance from the distance sensor to the surface, based on an appearance of the grid-shaped projection pattern in the image.
(FR)
Un exemple de la présente invention concerne un capteur de distance comprenant un système de projection, un système de réception de lumière et un processeur. Le système de projection comprend une pluralité de sources de lumière laser disposées en un réseau pour émettre une pluralité de faisceaux de lumière qui forment un motif de projection en forme de grille lorsque la pluralité de faisceaux de lumière est incidente sur une surface et une optique de compensation pour minimiser une distorsion curviligne induite par le grossissement du motif de projection en forme de grille avant que la pluralité de faisceaux de lumière ne soit incidente sur la surface. Le système de réception de lumière capture une image du motif de projection en forme de grille sur la surface. Le processeur calcule une distance entre le capteur de distance et la surface, sur la base d'un aspect du motif de projection en forme de grille dans l'image.
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