WO2024088686A1 - Abdeckung für einen lidarsensor - Google Patents
Abdeckung für einen lidarsensor Download PDFInfo
- Publication number
- WO2024088686A1 WO2024088686A1 PCT/EP2023/076755 EP2023076755W WO2024088686A1 WO 2024088686 A1 WO2024088686 A1 WO 2024088686A1 EP 2023076755 W EP2023076755 W EP 2023076755W WO 2024088686 A1 WO2024088686 A1 WO 2024088686A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cover
- layer
- refractive index
- lidar sensor
- carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- G01S7/4813—Housing arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
Definitions
- the invention relates to a protective cover for a lidar sensor.
- a vehicle may include at least one lidar sensor configured to capture sensor data relating to the environment of the sensor.
- the lidar sensor may be arranged, for example, at the front of the vehicle and is typically exposed to different environmental influences during operation of the vehicle, such as falling rocks, snow, rain, etc., which may impair the lidar sensor.
- This document addresses the technical task of providing reliable protection for a lidar sensor without significantly affecting the sensing properties of the lidar sensor.
- a (protective) cover (or a covering device) for a lidar sensor is described.
- the lidar sensor can be designed to emit a laser signal along a transmission direction.
- the lidar sensor can be set up to receive a reflection signal (based on a reflection of the laser signal) along a reception direction (opposite to the transmission direction).
- the laser signal and the reflection signal can have a frequency in the infrared frequency range.
- the cover described in this document has a relatively high transmittance (e.g. of 90% or more) in the frequency range of the lidar sensor.
- the back of the cover may face the lidar sensor during use, and the opposite front of the cover may face the area surrounding the lidar sensor (and away from the lidar sensor) during use.
- the transmit direction may be from the back to the front of the cover.
- the receive direction may be from the front to the back of the cover.
- the cover comprises a carrier layer (in particular a carrier layer) which has a carrier refractive index.
- the carrier layer can comprise a polycarbonate (PC) material, in particular consist of a polycarbonate material.
- PC polycarbonate
- the cover further comprises a first anti-reflection (AR) layer arranged between the carrier layer and the back of the cover, which has a first AR refractive index that lies between the refractive index of air and the carrier refractive index.
- AR anti-reflection
- the cover comprises a second AR layer arranged between the carrier layer and the front of the cover, which has a second AR refractive index that lies between the refractive index of air and the carrier refractive index.
- Such a multi-layer structure of the cover can provide a protective cover that has a particularly low impairment of the sensory properties of the lidar sensor.
- the first AR refractive index of the first AR layer can increase smoothly or gradually along the transmission direction from the rear side of the cover to the carrier layer.
- the second AR refractive index of the second AR layer can increase smoothly or gradually along the reception direction from the front side of the cover to the carrier layer.
- the cover in particular the carrier layer, can be designed in such a way that the lidar sensor (e.g. with a weight of 500g or more) can be attached to the back of the cover and supported by the cover. In this way, the lidar sensor can be particularly reliably protected by the cover.
- the cover can comprise a heating layer that is designed to heat the cover, in particular the surface on the front of the cover, e.g. to evaporate liquid on the surface of the cover. In this way, the quality of the sensor detection by the lidar sensor can be further increased.
- the heating layer can preferably be arranged between the second AR layer and the carrier layer in order to enable particularly efficient and reliable heating of the surface on the front of the cover.
- the heating layer can be arranged, in particular embedded, between a carrier film (made of PC material) and the carrier layer. This enables particularly efficient production of the cover with heating function. Furthermore, the heating layer can be reliably protected from environmental influences, so that a particularly robust cover is provided.
- the heating layer can comprise a grid of electrically conductive nanotubes.
- the grid can be energized so that the nanotubes heat up due to the flow of current. This can cause reliable and comprehensive evaporation of liquid on the surface of the front of the cover.
- the edge of the nanotube grid can surround the heated area of the cover.
- the heated area can be adapted to the azimuth angle and/or the elevation angle range of the detection area of the lidar sensor, so that the surface of the front of the cover can be heated in the entire detection area of the lidar sensor.
- the grid of nanotubes can be so coarse-meshed and/or the nanotubes can be so small that the nanotubes of the grid cover only 5% or less of the heatable area. This can ensure that the sensory detection of the lidar sensor is only insignificantly affected by the cover, in particular by the heating position of the cover.
- the cover can comprise a protective layer (e.g. a hard coating) which is arranged between the front side of the cover and the second AR layer and which is designed to protect the cover from mechanical and/or chemical environmental influences.
- a protective layer e.g. a hard coating
- the cover can comprise a comfort layer (in particular an easy-to-clean coating) on the surface on the front of the cover, which is intended to facilitate cleaning of the cover. This can enable efficient installation of the protective cover in a motor vehicle.
- a comfort layer in particular an easy-to-clean coating
- a (road) motor vehicle in particular a passenger car or a truck or a bus or a motorcycle
- the vehicle further comprises a lidar sensor arranged on the rear side of the cover.
- Figure 1 shows exemplary components of a vehicle
- Figure 2 shows an exemplary multi-layer protective cover for a lidar sensor.
- Fig. 1 shows an exemplary vehicle 100 that includes a lidar sensor 102 that is set up to capture sensor data relating to the surroundings of the vehicle 100.
- the lidar sensor 102 emits a laser signal that may be reflected by an object in the surroundings of the vehicle 100, so that a reflection signal is reflected back to the lidar sensor 102, which can be captured and evaluated by the lidar sensor 102.
- the evaluation of the data of the lidar sensor 102 can be effected by a control device 101 of the vehicle 100.
- the (evaluated) data of the lidar sensor 102 can be used to automatically guide the vehicle 100 longitudinally and/or transversely.
- the lidar sensor 102 can be arranged behind a cover 110 in the vehicle 100 in order to protect the lidar sensor 102 from environmental influences.
- the cover 110 should be designed in such a way that the sensor function of the lidar sensor 102 is not significantly impaired by the cover 110.
- the cover 110 should be within the entire detection range of the lidar sensor 102 (in particular in the entire Azimuth angle and/or elevation angle range) must be essentially transparent to the laser signal and to the reflection signal, ie to the wavelength of the lidar sensor (which is e.g. in the infrared range).
- Fig. 2 shows an exemplary cover 110 with multiple layers 201-207.
- the cover 110 comprises in particular a carrier layer 201, in particular a carrier layer, which is designed to form a support structure for the cover 110.
- the carrier layer 201 can be designed such that the lidar sensor (which can weigh up to 500g or up to 1kg, for example) can be attached to the carrier layer 201 and carried by the carrier layer 201.
- the carrier layer 201 can comprise a polycarbonate (PC) material, in particular consist of a PC material.
- PC polycarbonate
- the use of a PC material is advantageous because it can have a relatively high transparency with respect to the lidar wavelength. Furthermore, it can be possible to color the PC material (possibly in different colors, such as black), e.g. to adapt the cover 100 to the color of the vehicle 100.
- the front of a layer 201-207 is to be understood as the side that faces the surroundings of the lidar sensor 102 when the cover 110 is used.
- the back of a layer 201-207 is to be understood as the (opposite) side that faces the lidar sensor 102 when the cover 110 is used.
- the carrier layer 201 can have a specific refractive index, which is referred to in this document as the carrier refractive index.
- a (first) anti-reflection (AR) layer 202 in particular an AR layer, can be arranged on the back of the carrier layer 201.
- the first AR layer 202 can have an AR refractive index that lies between the refractive index of air and the carrier refractive index. If necessary, the first AR layer 202 can have an AR refractive index that changes along the thickness of the first AR layer 202.
- the AR refractive index can increase in particular from the back towards the front of the first AR layer 202.
- a second AR layer 205 may be arranged on the front side of the carrier layer 201, which has an AR refractive index that lies between the refractive index of air and the carrier refractive index.
- the AR refractive index may increase from the front side to the back side, if necessary.
- the cover 110 comprises a heating layer 203, wherein the heating layer 203 can be arranged, in particular embedded, between a further auxiliary carrier layer 204, in particular a film, and the carrier layer 201 for protection and/or fixing.
- the heating layer 203 can be designed to heat the entire surface of the cover 110 (which is relevant for the detection range of the lidar sensor 102), in particular to remove moisture from the front of the cover 110, in particular to evaporate it.
- the heating layer 203 can have a grid of electrically conductive nanotubes that can be energized for heating.
- the grid covers a surface area of the surface of the cover 110 to be heated, which is preferably less than 10% or less than 5%. This can be achieved by the Using a relatively coarse-meshed grid and/or relatively small nanotubes. In this way, the impairment of the sensor properties of the lidar sensor 102 by the heating layer 203 can be reduced to a minimum.
- the cover 110 can further comprise a protective layer 206 on the front side of the cover 110, in particular directly on the front side of the second AR layer 205, which is designed to protect the layers 205, 204, 203, 201, 202 of the cover 110 arranged on the back side of the protective layer 206 from mechanical and/or chemical environmental influences.
- a protective layer 206 on the front side of the cover 110, in particular directly on the front side of the second AR layer 205, which is designed to protect the layers 205, 204, 203, 201, 202 of the cover 110 arranged on the back side of the protective layer 206 from mechanical and/or chemical environmental influences.
- the cover 110 may further include a comfort layer 207 on the front side of the protective layer 206, which is configured, for example, to facilitate the removal of protection from the cover 110.
- a cover 110 for a lidar sensor 102 which only insignificantly restricts the function of the lidar sensor 102.
- the cover 110 can meet different requirements with regard to the lidar function, with regard to cleaning the cover 110, with regard to the heatability of the cover 110 and/or with regard to the fatigue strength of the cover 110.
- the cover 110 can have a polycarbonate carrier layer 201 with integrated heating 203 on a (PC) film 204 that is connected to the carrier layer 201 (e.g. that is injected).
- An anti-reflective coating 202, 205 can be arranged on this in order to increase the performance of the lidar sensor 102 covered by the cover 110.
- the cover 110 ie the cover
- an "easy-to-clean" coating 207 can be applied with regard to a cleaning requirement.
- the present invention is not limited to the embodiments shown. In particular, it should be noted that the description and the figures are intended only to illustrate the principle of the proposed devices and systems by way of example.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optics & Photonics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380073203.0A CN120051706A (zh) | 2022-10-27 | 2023-09-27 | 用于激光雷达传感器的覆盖件 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022128424.7A DE102022128424A1 (de) | 2022-10-27 | 2022-10-27 | Abdeckung für einen Lidarsensor |
| DE102022128424.7 | 2022-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024088686A1 true WO2024088686A1 (de) | 2024-05-02 |
Family
ID=88237826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/076755 Ceased WO2024088686A1 (de) | 2022-10-27 | 2023-09-27 | Abdeckung für einen lidarsensor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN120051706A (de) |
| DE (1) | DE102022128424A1 (de) |
| WO (1) | WO2024088686A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3097495A1 (fr) * | 2019-06-21 | 2020-12-25 | Compagnie Plastic Omnium | Dispositif de protection d’un Lidar de véhicule automobile |
| US20200408956A1 (en) * | 2019-06-26 | 2020-12-31 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
| EP3772133A1 (de) * | 2019-07-29 | 2021-02-03 | Compagnie Plastic Omnium SE | Schutzvorrichtung für lidar eines kraftfahrzeugs |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102744687B1 (ko) | 2017-12-21 | 2024-12-23 | 코베스트로 도이칠란트 아게 | 다층체 및 LiDAR 센서를 포함하는 장치 |
| WO2020216547A1 (de) | 2019-04-20 | 2020-10-29 | Saint-Gobain Glass France | Drehbare abdeckung für fahrzeugsensormodule |
| DE102020121024A1 (de) | 2020-08-10 | 2022-02-10 | Marelli Automotive Lighting Reutlingen (Germany) GmbH | Kraftfahrzeugbeleuchtungseinrichtung mit beheizbarer Abdeckscheibe |
| CN114942483A (zh) | 2022-04-12 | 2022-08-26 | 福耀玻璃工业集团股份有限公司 | 玻璃组件、车辆 |
-
2022
- 2022-10-27 DE DE102022128424.7A patent/DE102022128424A1/de active Pending
-
2023
- 2023-09-27 CN CN202380073203.0A patent/CN120051706A/zh active Pending
- 2023-09-27 WO PCT/EP2023/076755 patent/WO2024088686A1/de not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3097495A1 (fr) * | 2019-06-21 | 2020-12-25 | Compagnie Plastic Omnium | Dispositif de protection d’un Lidar de véhicule automobile |
| US20200408956A1 (en) * | 2019-06-26 | 2020-12-31 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
| EP3772133A1 (de) * | 2019-07-29 | 2021-02-03 | Compagnie Plastic Omnium SE | Schutzvorrichtung für lidar eines kraftfahrzeugs |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022128424A1 (de) | 2024-05-02 |
| CN120051706A (zh) | 2025-05-27 |
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