WO2018206517A1 - Senderoptik für ein lidar-system, optische anordnung für ein lidar-system, lidar-system und arbeitsvorrichtung - Google Patents
Senderoptik für ein lidar-system, optische anordnung für ein lidar-system, lidar-system und arbeitsvorrichtung Download PDFInfo
- Publication number
- WO2018206517A1 WO2018206517A1 PCT/EP2018/061752 EP2018061752W WO2018206517A1 WO 2018206517 A1 WO2018206517 A1 WO 2018206517A1 EP 2018061752 W EP2018061752 W EP 2018061752W WO 2018206517 A1 WO2018206517 A1 WO 2018206517A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optics
- light source
- line
- lidar system
- mirror
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
- G01S7/4812—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver transmitted and received beams following a coaxial path
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4817—Constructional features, e.g. arrangements of optical elements relating to scanning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4818—Constructional features, e.g. arrangements of optical elements using optical fibres
Definitions
- Transmitter optics for a LiDAR system optical arrangement for a LiDAR system, LiDAR system and working device
- the present invention relates to a transmitter optics for a LiDAR system for illuminating a field of view with light, an optical arrangement for a LiDAR system for optically detecting a field of view, a LiDAR system as such and a working device and in particular a vehicle.
- Sensor arrays used to detect the operating environment.
- light-based detection systems are also used, e.g. so-called LiDAR systems (English: LiDAR: light detection and ranging).
- the primary light is passed through the field of view after being generated by rotating or tilted optical elements to scan it in a scanning or scanning manner with primary light.
- the oscillating or rotating components in such systems have comparatively high inertial forces which must be overcome.
- optical elements used in the form of microlenses or the like must be made as accurately as possible, even when other optical components are moving, in order to obtain a high imaging quality. This requires a considerable apparatus and control engineering effort.
- the transmitter optics according to the invention for a LiDAR system with the features of claim 1 has the advantage that with a comparatively simple structure and reduced inertial forces in a scanning LiDAR system a particularly lossless and
- a transmitter optics for a LiDAR system for illuminating a field of view with light is specified, which is formed (i) with a line light source for generating and outputting primary light in line form and (ii) with a
- Line light source on the lens assembly such that the image of the
- Lens arrangement or a part thereof sweeps.
- lens arrangement There are various embodiments for the lens arrangement.
- the lens arrangement for outputting the received primary light in the field of view (a) a segmented lens arrangement, a lens array, a lens matrix, a microlens array, a rod lens array with a plurality of rod lenses with parallel rod axes, in particular with rod axes parallel aligned to a pivot axis of the pivoting mirror, (b) a diffractive optical element, in particular a DOE, and / or (c) have a hologram.
- transmitter optics (A) a laser, a laser
- Edge emitter laser a surface laser, a vertical cavity surface (VCSEL)
- a laser vertical external cavity surface emitting laser
- B have an arrangement with an illuminable or illuminated gap.
- a respective laser may also be designed as a gas laser or as a solid-state laser, which is expanded to a line using a corresponding beam-shaping optical system.
- Deflection mirror which can also be generally referred to as a deflection, conceivable.
- the present invention also relates to an optical arrangement for a LiDAR system as a whole, namely for the optical detection of a field of view, in particular for a working device and / or a vehicle, with a transmitter optics for illuminating a field of view with primary light, which is formed according to the present invention , and with a receiver optics for receiving secondary light from the field of view.
- a transmitter optics for illuminating a field of view with primary light which is formed according to the present invention
- a receiver optics for receiving secondary light from the field of view.
- the transmitter optics and the receiver optics are formed, for example, with at least partially or partially mutually coaxial beam paths, in particular in the region of the beam exit side and the beam entrance side of the LiDAR system.
- a beam splitter may be formed to accommodate the
- optical arrangements according to the invention for a LiDAR system are conceivable, which despite the partial or sectional coaxial design of the beam paths of transmitter optics on the beam exit side and receiver optics on the beam entrance side are designed without beam splitter, in which case an intended detector arrangement of the receiver optics in the immediate vicinity of the line light source and / or next to
- Line light source is arranged.
- the transmitter optics and the receiver optics are substantially or largely separate from each other and / or formed to each other biaxial beam paths, in particular on the
- Field of view and in particular for a working device and / or for a vehicle is formed and has an optical arrangement according to the invention.
- FIG. 1 shows the manner of a schematic block diagram
- FIG. 2 shows a first plan view in the manner of a schematic plan view
- Embodiment of the transmitter optics invention Embodiment of the transmitter optics invention.
- FIGS 3 and 4 show the manner of schematic plan views
- Figure 5 shows a kind of schematic plan view of a
- Figure 1 shows in the form of a schematic block diagram a
- the LiDAR system 1 according to FIG. 1 has an embodiment of the transmitter optics 60 according to the invention, which is provided by a light source unit 65 with a line light source 65-1, e.g. in the form of a laser, and primary light 57 - possibly after passing through a beam shaping optics 66 - in a field of view 50 for the investigation of an object 52 located there emits.
- a light source unit 65 with a line light source 65-1, e.g. in the form of a laser, and primary light 57 - possibly after passing through a beam shaping optics 66 - in a field of view 50 for the investigation of an object 52 located there emits.
- the LiDAR system 1 has a receiver optics 30, which receives secondary light 58 reflected by the object 52 in the field of view 50 via a lens 34 as a primary optic and, if appropriate, via a
- Secondary optics 35 - transmits to a detector array 20 for detection.
- control of the light source unit 65 with the line light source 65-1 and the detector arrangement 20 via control lines 42 and 41 by means of a control and evaluation unit 40th
- Core aspects of the present invention are concentrated in the area of the deflecting optics 62 and manifest themselves in the provision of a rotating mirror 63, which rotates about a rotation axis or pivot axis 64-1 by means of a rotation axis 63
- Pivoting movement 64 or rotational movement 64 is pivotable or rotatable, thereby illuminating the lens assembly 68 scanning with an image of the line light source 65-1 of the light source unit 65 imaging.
- the Lens assembly 68 having a plurality of individual lenses is configured to direct primary light 57 into field of view 50 having object 52 therein.
- part of the deflection optics 62 is also a projection optics 90, which is set up to emit the primary light 57 at different angles into the field of view 50 and, if appropriate, to receive secondary light 58 from the various angles of the field of view 50 in the manner of an objective.
- Figure 2 shows, in the manner of a schematic plan view, an embodiment of the transmitter optics 60 according to the invention as part of an optical arrangement 10 for a LiDAR system 1 and concentrates on core aspects of the present invention.
- rotating mirror 63 which is rotatable about a rotational movement 64 about a rotation axis 64-1, an image of the line light source 65-1 the
- the lens assembly 68 itself serves to direct the primary light 57 into the field of view 50, thereby monitoring the field of view 50 in the manner of an environment.
- the rotating mirror 63 is designed in the manner of a prism mirror with a base surface in the form of a uniform hexagon and square or rectangular mirror surfaces.
- Lens assembly 68 consists of a plurality of parallel to each other
- aligned rod lenses whose axis of symmetry is aligned parallel to the axis of rotation 64-1 of the rotating mirror 63.
- the individual lens segments are designed here by way of example biconcave.
- FIGS. 3 and 4 show, in the manner of schematic plan views, embodiments of the LiDAR system 1 according to the invention using FIG.
- Embodiments of the transmitter optics 60 according to the invention are partially coaxial with each other and are separated only in the region and by the action of the beam splitter 80.
- the transmitter optics 60 according to FIG. 3 correspond to the core according to FIG.
- Intermediate image optics 70 with partial optics 71, 72 and 73 - the latter optional - between the line light source 64-1 of the light source unit 65 and the beam splitter 80 and the line light source 65-1, the beam splitter 80 and the rotating mirror 63 or between the rotating mirror 63 and the intermediate image plane 69 of the
- Lens assembly 68 is formed.
- an objective optics 90 is also provided between the rotating mirror 63 and the lens arrangement 68, which serves for the projection of the primary light 57 into the field of view 50 and the rear projection of the secondary light 58 coming from the field of view 50.
- Receiver optics 30 is located on the receiver side, a detector assembly 20 having a plurality of sensor elements 22. Between the
- Detector assembly 20 and the beam splitter 80 is a secondary optics 35 of the receiver optics 30 is formed to image the secondary light 58 in a suitable manner to the detector array 20 and the sensor elements 22.
- the embodiment according to Figure 4 is the core with
- Coaxially guided beam paths 31 and 61 for the receiver optics 30 and for the transmitter optics 60 but here no beam splitter 80 is used. Rather, here the detector arrangement 20 is formed in the immediate vicinity of the line light source 65-1 of the lightwave arrangement 65.
- FIG. 5 shows, in the manner of a schematic plan view, an embodiment of the transmitter optics 60 according to the invention with two transmission paths 61.
- a pair of line light sources 65 - 1 are formed as part of the light source unit 65.
- the embodiments are biaxially conceivable, i. Transmit path and receive path are optically configured separately.
- the embodiments may also be coaxial, i. Transmit path and receive path are defined via a common look.
- a weakness of the macro scanners are (a) the existence of a
- the mirror can either be a micro or ⁇ mirror, which is operated resonantly or statically, or a miniaturized rotary mirror, such as a polygon mirror, with a constant
- FIG. 1 A possible construction is shown in FIG. 1
- the line laser 64-1 e.g. in the form of an edge emitter, is transmitted via an optic 71, e.g. with fast-axis collimation, a beam splitter 80 and an optic 72 as
- the optics 72 with the prism or polygon mirror 63 is arranged reversed in the order, so that by using the in Fig. 3 as dashed optionally indicated optics 73 first the deflection or deflection of the laser radiation 57 takes place and then the image the microlens array 68 in the intermediate plane 69.
- the optics 73 can be designed as a focusing optics with a constant f-theta ratio and / or with telecentricity. In a further alternative of the present invention, the optics 72 and 73 may be formed together.
- the microlens array 68 may consist of rod lenses that expand or magnify the laser beam in one direction.
- the individual can
- Rod lenses can be constructed from spherical or aspherical elements.
- the individual elements can be concave or convex.
- Both sides of the microlens array 68 can be provided with a curvature.
- the lens properties e.g. an expansion or a deflection of the laser light
- the microlens array 68 are generated by a DOE or diffractive optical element or by a hologram.
- the expanded beam 57 is projected via the projection optics 90 into the environment, namely the field of view 50.
- the light scattered back by objects 52 is directed onto the beam splitter 80 via the projection optics 90, the microlens array 68, the mirror 63 and the optics 72.
- a portion of the light is transmitted via the optic 35 to a line detector 20, e.g. an APD line, pictured.
- a line detector 20 e.g. an APD line, pictured.
- the horizontal resolution of the system is given by the spacings of the microlenses 68 and the imaging factor of the projection optics 90.
- the vertical resolution is given by the pixels on the line detector 20.
- All optics 70, 71, 72, 73, 35 are coated with a coating for high light transmission.
- FIG. 3 shows an embodiment with prism or polygon mirror 63 and beam splitter 80 for a coaxial system.
- FIGS. 4 and 5 Further possible variants are shown in FIGS. 4 and 5. With comparatively slowly moving mirrors and many shots per microlens, the point of impact shifts across the lens, which increases
- the weft pattern can be laid so that the microlens is always hit in the middle.
- FIG. 4 shows a transmitter optics 60 according to the invention with a beam path 61, 31 without a beam splitter 80 and with a detector 20 outside the transmission axis 61, as can be used, for example, in mirrors 63 which move very fast.
- the returning light as secondary light 58 can be directed in the direction of the detector arrangement 20 with the detector elements 22 via the meanwhile further moving mirror 63.
- Figure 5 shows another embodiment in which the mirror 63 is used so that it can serve two systems. As a result, a version with an expanded field of view (Field of View: FoV) is created.
- Field of View: FoV Field of View
- Reverse paths are not drawn, but could also be in a separate optical path, ie in a biaxial arrangement.
- edge emitter laser English: edge-emitting laser
- broad-area laser laser-beam
- VCSEL vertical cavity surface emitting laser
- a line array e.g., 50 emitters
- iii as a low-dimensional two-dimensional array (e.g., 50x2 emitter), thereby enabling simultaneous bombardment of two microlenses, and / or
- iii as a low-dimensional two-dimensional array (e.g., 50x2 emitter), this allows simultaneous bombardment of two microlenses.
- imaging feature eg to shape the beam in the vertical direction.
- detector - APD detector (English: avalange photodiode) i as a line array (eg 50 single detectors) and / or
- ii as a low-dimensional two-dimensional array (eg 50 x 2 detectors) - SPAD detector (single photon counting avalange diode) i as a line array (eg 50 single detectors),
- ii as a low-dimensional two-dimensional array (eg 50 x 2 detectors) and / or
- SiPM silicon photo multiplyer
- - Optics 2 i as a beam-forming optic for generating a laser line
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18723800.1A EP3622317A1 (de) | 2017-05-12 | 2018-05-08 | Senderoptik für ein lidar-system, optische anordnung für ein lidar-system, lidar-system und arbeitsvorrichtung |
KR1020197036312A KR20200004873A (ko) | 2017-05-12 | 2018-05-08 | 라이다 시스템용 송신 광학계, 라이다 시스템용 광학 어셈블리, 라이다 시스템, 그리고 작동 장치 |
CN201880031322.9A CN110622030A (zh) | 2017-05-12 | 2018-05-08 | 用于激光雷达系统的发送光学系统、用于激光雷达系统的光学装置、激光雷达系统和工作设备 |
JP2019562324A JP2020519891A (ja) | 2017-05-12 | 2018-05-08 | LiDARシステム用の送光器光学系、LiDARシステム用の光学配列、LiDARシステムおよび仕事をする装置 |
US16/612,488 US11500105B2 (en) | 2017-05-12 | 2018-05-08 | Transmitter optics for a LIDAR system, optical arrangement for a LIDAR system, LIDAR system and working device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017208052.3 | 2017-05-12 | ||
DE102017208052.3A DE102017208052A1 (de) | 2017-05-12 | 2017-05-12 | Senderoptik für ein LiDAR-System, optische Anordnung für ein LiDAR-System, LiDAR-System und Arbeitsvorrichtung |
Publications (1)
Publication Number | Publication Date |
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WO2018206517A1 true WO2018206517A1 (de) | 2018-11-15 |
Family
ID=62148361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2018/061752 WO2018206517A1 (de) | 2017-05-12 | 2018-05-08 | Senderoptik für ein lidar-system, optische anordnung für ein lidar-system, lidar-system und arbeitsvorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US11500105B2 (de) |
EP (1) | EP3622317A1 (de) |
JP (1) | JP2020519891A (de) |
KR (1) | KR20200004873A (de) |
CN (1) | CN110622030A (de) |
DE (1) | DE102017208052A1 (de) |
WO (1) | WO2018206517A1 (de) |
Cited By (4)
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CN111665514A (zh) * | 2019-03-05 | 2020-09-15 | 英飞凌科技股份有限公司 | 激光雷达传感器及用于激光雷达传感器的方法 |
CN114114317A (zh) * | 2020-08-28 | 2022-03-01 | 上海禾赛科技有限公司 | 激光雷达、数据处理方法及数据处理模块、介质 |
CN114667464A (zh) * | 2019-11-06 | 2022-06-24 | 观察者人工智能公司 | 用作变换光学器件的具有无源元件的平面光学器件 |
US12072422B2 (en) | 2020-10-30 | 2024-08-27 | Waymo Llc | Light detection and ranging (lidar) devices having vertical-cavity surface-emitting laser (VCSEL) emitters |
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JP7102797B2 (ja) * | 2018-03-12 | 2022-07-20 | 株式会社リコー | 光学装置、これを用いた距離計測装置、及び移動体 |
KR20200005083A (ko) * | 2018-07-05 | 2020-01-15 | 삼성전자주식회사 | 광센싱 시스템 및 이를 포함하는 전자 기기 |
DE102018118653B4 (de) * | 2018-08-01 | 2020-07-30 | Sick Ag | Optoelektronischer Sensor und Verfahren zum Erfassen eines Objekts |
DE102019200154A1 (de) | 2019-01-09 | 2020-07-09 | Robert Bosch Gmbh | Sendeeinheit für einen LIDAR-Sensor, LIDAR-Sensor mit einer Sendeeinheit und Verfahren zur Ansteuerung einer Sendeeinheit für einen LIDAR-Sensor |
DE102019101968A1 (de) * | 2019-01-28 | 2020-07-30 | Valeo Schalter Und Sensoren Gmbh | Sendeeinrichtung für eine optische Messvorrichtung zur Erfassung von Objekten, Lichtsignalumlenkeinrichtung, Messvorrichtung und Verfahren zum Betreiben einer Sendeeinrichtung |
CA3239810A1 (en) | 2019-03-08 | 2020-09-17 | Leddartech Inc. | Method, system and computer readable medium for evaluating influence of an action performed by an external entity |
DE102019120162A1 (de) * | 2019-07-25 | 2021-01-28 | Valeo Schalter Und Sensoren Gmbh | Sendeeinrichtung für eine optische Messvorrichtung zur Erfassung von Objekten, Lichtsignalumlenkeinrichtung, Messvorrichtung und Verfahren zum Betreiben einer Messvorrichtung |
DE102019219825A1 (de) * | 2019-12-17 | 2021-06-17 | Robert Bosch Gmbh | Sendeeinheit und LIDAR-Vorrichtung mit optischem Homogenisierer |
EP4119976A4 (de) * | 2020-03-31 | 2023-08-30 | Huawei Technologies Co., Ltd. | Lichtemittierende vorrichtung und elektronische vorrichtung |
US20240168133A1 (en) | 2021-03-19 | 2024-05-23 | Koito Manufacturing Co., Ltd | Sensor system |
CN116068579A (zh) * | 2021-10-29 | 2023-05-05 | 华为技术有限公司 | 一种激光雷达系统及电子设备 |
KR20240022227A (ko) * | 2022-08-11 | 2024-02-20 | 엘지이노텍 주식회사 | 광 출력 장치 및 이를 포함하는 정보 생성 장치 |
CN115144861B (zh) * | 2022-09-05 | 2022-11-04 | 天津帆探科技有限公司 | 一种混合固态激光雷达及扫描方法 |
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- 2018-05-08 US US16/612,488 patent/US11500105B2/en active Active
- 2018-05-08 CN CN201880031322.9A patent/CN110622030A/zh active Pending
- 2018-05-08 WO PCT/EP2018/061752 patent/WO2018206517A1/de active Application Filing
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CN114114317A (zh) * | 2020-08-28 | 2022-03-01 | 上海禾赛科技有限公司 | 激光雷达、数据处理方法及数据处理模块、介质 |
CN114114317B (zh) * | 2020-08-28 | 2023-11-17 | 上海禾赛科技有限公司 | 激光雷达、数据处理方法及数据处理模块、介质 |
US12072422B2 (en) | 2020-10-30 | 2024-08-27 | Waymo Llc | Light detection and ranging (lidar) devices having vertical-cavity surface-emitting laser (VCSEL) emitters |
Also Published As
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KR20200004873A (ko) | 2020-01-14 |
DE102017208052A1 (de) | 2018-11-15 |
JP2020519891A (ja) | 2020-07-02 |
EP3622317A1 (de) | 2020-03-18 |
CN110622030A (zh) | 2019-12-27 |
US11500105B2 (en) | 2022-11-15 |
US20210157008A1 (en) | 2021-05-27 |
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