Vehicle window assembly and vehicle

Abstract

The application relates to a vehicle window assembly and a vehicle. The vehicle window assembly comprises a vehicle window glass and a laser radar. The vehicle window glass is provided with an information collection area; the laser radar is arranged on the side of the vehicle window glass facing the vehicle interior, the laser radar faces the vehicle window glass and is located in position correspondence with the information collection area, and the laser radar comprises a shell, the shell comprises a front panel, and the front panel is parallel to the vehicle window glass. The vehicle window assembly of the application is characterized in that the front panel is parallel to the vehicle window glass, so that the distance between the shell and the vehicle window glass can be designed to be very small, the information collection area of the vehicle window glass is reduced in size, the area of the anti-reflection film is correspondingly reduced, the coating cost is reduced, more space is saved for other functional integrated devices, such as infrared cameras, millimeter wave LiDAR and other auxiliary driving functional devices, and the assembly difficulty is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle window assembly and a vehicle. BACKGROUND

[0002] Laser radar, also known as LiDAR, is a sensor based on non-contact laser ranging technology, which consists of a transmitting system, a receiving system and an information processing system. Laser radar is a key perception hardware for L3 and above automatic driving vehicles. The detection distance of laser radar can reach 500 meters, the measurement accuracy is high, and it is not limited by light environment, which can significantly improve the reliability of the automatic driving system.

[0003] In the related art, the application of laser radar is generally external and installed on the roof of the vehicle. However, the external laser radar scheme has the disadvantages of large volume and weight, being easily affected by rain, snow and other bad weather, stone impact, large wind resistance, and difficulty in defrosting and defogging. Based on the above shortcomings, some people have proposed to place the laser radar inside the vehicle, i.e. inside the front windshield. However, this scheme also has many technical difficulties, such as weakening of the front windshield structure to the signal transmission of the laser radar, implementation of the anti-reflection function under the incidence of a specific wavelength at a large angle, development of an industrialization scheme, and installation of the laser radar inside the vehicle, which is difficult to meet the actual requirements of signal transmission and reception, and has a high cost. SUMMARY

[0004] Therefore, it is necessary to overcome the defects of the prior art and provide a vehicle window assembly and a vehicle, which can meet the actual requirements of signal transmission and reception and reduce the cost.

[0005] The present application provides a vehicle window assembly, which comprises:

[0006] a vehicle window glass, the vehicle window glass being provided with an information collection area; and

[0007] a laser radar, the laser radar being arranged on a side of the vehicle window glass facing the inside of the vehicle, the laser radar being directed towards the vehicle window glass and corresponding to the position of the information collection area, the laser radar comprising a shell, the shell comprising a front panel, the front panel being parallel to the vehicle window glass.

[0008] In one embodiment, the distance X between the front panel of the laser radar and the vehicle window glass is 1mm-5mm.

[0009] In one embodiment, the laser radar further comprises a transmitting and receiving device arranged inside the shell, the distance between the center position of the transmitting and receiving device and the center position of the front panel is 30mm-75mm, and the distance between the center position of the transmitting and receiving device and the vehicle window glass is 31mm-80mm.

[0010] In one of the embodiments, the horizontal FOV of the laser radar is set as [-a, a], and the vertical FOV is set as [-b, b]; wherein a is 45° to 75°, and b is 8° to 15°.

[0011] In one of the embodiments, the detection signals emitted and received by the laser radar pass through the vehicle window glass, and the area of the projection region of the detection signals of the laser radar on the surface of the vehicle window glass is set as S, which satisfies the following calculation formula:

[0012] Area S = [(40 + X) * tan a * 2] * [(40 + X) * tan b * 2] ÷ cos (90 - q), wherein * is a multiplication sign, q is the installation angle of the vehicle window glass, X is the distance between the front panel of the laser radar and the vehicle window glass.

[0013] In one of the embodiments, the area S is set as 3500mm 2 to 10000mm 2 .

[0014] In one of the embodiments, the information collection area of the vehicle window glass is provided with an anti-reflection film, the anti-reflection film is in the shape of a trapezoid, the length of the top edge of the anti-reflection film is 2cm to 10cm, the length of the bottom edge of the anti-reflection film is 7cm to 26cm, and the distance between the top edge and the bottom edge of the anti-reflection film is 4cm to 11cm.

[0015] In one of the embodiments, the width of the shell of the laser radar is set as W, the depth of the shell is set as D, and the height of the shell is set as H; wherein W is 100mm to 200mm, D is 60mm to 150mm, and H is 15mm to 50mm.

[0016] In one of the embodiments, W is 120mm to 150mm, D is 80mm to 120mm, and H is 25mm to 40mm.

[0017] In one of the embodiments, the side of the shell of the laser radar facing the vehicle window glass is provided with an opening, and is sealingly attached to the vehicle window glass, and the part of the vehicle window glass for sealingly attaching the opening of the laser radar is the front panel.

[0018] In one of the embodiments, the laser radar is a semi-solid laser radar.

[0019] The application also provides a vehicle comprising the vehicle window assembly as described above.

[0020] The vehicle window assembly described above, because the front panel is parallel to the vehicle window glass, the distance X between the shell and the vehicle window glass can be designed to be very small, for example, the distance X is designed to be 1mm-5mm, so that the information acquisition area of the vehicle window glass is reduced, and the area of the anti-reflection film is correspondingly reduced, thereby the coating cost can be reduced, and more space is saved for other functional integrated devices, such as infrared cameras, millimeter wave LiDAR, and other auxiliary driving function devices, thereby greatly reducing the assembly difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structural schematic diagram of a vehicle window assembly according to an embodiment of the present application.

[0022] Figure 2 A structural schematic diagram of a vehicle window assembly according to another embodiment of the present application.

[0023] Figure 3 A structural schematic diagram of a vehicle window assembly according to an embodiment of the related art.

[0024] 10, vehicle window glass; 11, anti-reflection film; 20, laser radar; 21, shell; 211, front panel; 212, bottom panel; 22, transmitter-receiver. DETAILED DESCRIPTION

[0025] In order to make the above objectives, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0026] As described in the background, when the laser radar is built-in in the vehicle, there are many technical difficulties: such as the weakening of the front windshield structure to the signal transmission of the laser radar, the implementation and industrialization of the anti-reflection function under the incidence of a specific wavelength at a large angle, and the installation when the laser radar is built-in, which is difficult to meet the actual requirements of signal transmission and reception, and the cost is high. The inventor found that the reason for these problems is that the signal transmission rate of the laser radar is lost after the laser radar is built-in, so an anti-reflection (AR) film needs to be set in the projection area of the laser radar signal on the front windshield to improve the signal transmission rate, but if the area of the AR film set in the front windshield area is too large, it will invade the main viewing area or the camera area, thereby causing installation difficulties and greatly increasing the coating cost.

[0027] Based on the above reasons, the present application provides a vehicle window assembly and a vehicle, which can meet the actual requirements of signal transmission and reception, and can reduce the cost.

[0028] Referring to Figure 1 , Figure 1 A structural schematic diagram of a vehicle window assembly according to an embodiment of the present application is shown. The vehicle window assembly according to an embodiment of the present application includes a vehicle window glass 10 and a laser radar 20. The vehicle window glass 10 is provided with an information collection area. The laser radar 20 is arranged on a side of the vehicle window glass 10 facing the inside of the vehicle, and the laser radar 20 faces the vehicle window glass 10 and corresponds to the position of the information collection area. The housing 21 includes a front panel 211 parallel to the vehicle window glass 10.

[0029] It should be noted that "parallel" is not strictly parallel in the mathematical sense, but can be parallel to the naked eye, allowing a deviation of 10° or less.

[0030] In this way, since the front panel 211 is parallel to the vehicle window glass 10, the distance between the housing 21 and the vehicle window glass 10 can be designed to be very small, so that the information collection area of the vehicle window glass 10 is reduced, and the area of the anti-reflection film 11 is correspondingly reduced, thereby reducing the coating cost, saving more space for other functional integrated devices such as infrared cameras, millimeter wave LiDAR, and other auxiliary driving functional devices, thereby greatly reducing the assembly difficulty.

[0031] In one embodiment, the information collection area of the vehicle window glass 10 is provided with an anti-reflection film 11.

[0032] It should be noted that the anti-reflection film 11 mainly functions to reduce or eliminate the reflected light of the optical surface of the vehicle window glass 10, thereby increasing the light transmission of these elements and reducing or eliminating the stray light of the system, for example, including a plurality of high refractive index layers and a plurality of low refractive index layers arranged in layers.

[0033] In some embodiments, the anti-reflection film 11 is designed and coated according to the corresponding requirements of the detection signal of the laser radar 20, and the high refractive index layers and the low refractive index layers are arranged in layers in turn and alternately, that is, one layer of low refractive index layer is arranged in layers between every two adjacent high refractive index layers, and one layer of high refractive index layer is arranged in layers between every two adjacent low refractive index layers. The signal source of the laser radar 20 is any one single point wavelength between 800 nm and 1600 nm, and the commonly used wavelength is generally set to 905 nm, 1550 nm or any other value according to different laser radars 20.

[0034] The detection signal of the laser radar 20 will be lost to a certain extent when passing through the vehicle window glass 10 located in front of the laser radar 20. As a comparative example, the ranging capability (10% reflective target) of the laser radar 20 is 150m to 250m in the case that there is no vehicle window glass 10 in front of the laser radar 20. In the case that there is the vehicle window glass 10 in front of the laser radar 20, the ranging capability (10% reflective target) of the laser radar 20 can still reach 150m or more due to the antireflection film 11 provided on the vehicle window glass 10.

[0035] In one embodiment, the vehicle window glass 10 comprises a first light-transmitting plate, an adhesive layer and a second light-transmitting plate which are sequentially stacked and connected. The first light-transmitting plate has a first surface and a second surface which are oppositely arranged, and the second light-transmitting plate has a third surface and a fourth surface which are oppositely arranged. The first surface faces outward, and the fourth surface faces inward; the second surface and the third surface are oppositely arranged. The antireflection film 11 is arranged on the first surface, the second surface, the third surface or the fourth surface. Preferably, the antireflection film 11 is arranged on the fourth surface.

[0036] Optionally, the adhesive layer is provided as a coating layer or a film layer, and specifically, it can be a transparent film with sound insulation or heat insulation or both sound insulation and heat insulation, for example, with a thickness of 0.38mm to 0.76mm, for the purpose of bonding and fixing the first light-transmitting plate and the second light-transmitting plate. The material of the adhesive layer can be selected from polyvinyl butyral (PVB), polycarbonate (PC), sound insulation PVB, light shielding PVB, heat control PVB, ethylene-vinyl acetate (EVA), thermoplastic polyurethane (TPU), ionomer, thermoplastic material, polybutylene terephthalate (PBT), polyethylene-vinyl acetate (PET), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl fluoride (PVF), polyacrylate (PA), polymethyl methacrylate (PMMA), polyurethane (PUR) and combinations thereof.

[0037] In one embodiment, please refer to Figure 1 In one embodiment, the distance X between the front panel 211 and the vehicle window glass 10 is 1mm to 5mm. Specifically, X is, for example, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5m, 4mm, 4.5mm, 5mm or any value less than 1mm or greater than 5mm according to actual needs. Preferably, the distance X between the front panel 211 and the vehicle window glass 10 is 1mm to 3mm.

[0038] In an embodiment, the laser radar 20 further comprises a sensor 22 arranged inside the housing 21. The center of the sensor 22 is 30-75 mm away from the center of the front panel 211. The center of the sensor 22 is 31-80 mm away from the windshield 10.

[0039] Referring to Figure 1 In an embodiment, the housing 21 further comprises a bottom panel 212. The front panel 211 is connected to the bottom panel 212 at an angle. The bottom panel 212 is parallel to the horizontal plane, i.e., it is usually installed horizontally. The angle between the front panel 211 and the bottom panel 212 is r, and the angle r is the same as the installation angle θ of the windshield 10. Compared with the related art in which the front panel 211 and the bottom panel 212 are perpendicular (for example, as shown in Figure 3 The laser radar 20 in the embodiment can greatly reduce the distance between the front panel 211 and the windshield 10 when installed.

[0040] In an embodiment, the sensor 22 of the laser radar 20 comprises but is not limited to a center of the housing of the laser radar 20.

[0041] In an embodiment, the horizontal FOV of the laser radar 20 is set to [-α, α], and the vertical FOV is set to [-β, β]. Wherein, α is 45-75°, and is specifically, for example, 45°, 50°, 55°, 60°, 65°, 70°, 75°, etc. In addition, β is 8-15°, and is specifically, for example, 8°, 10°, 12°, 13°, 15°.

[0042] Referring to Figure 1 In an embodiment, the area S of the projection area of the detection signal of the laser radar 20 on the surface of the windshield 10 satisfies the following calculation formula:

[0043] The area S = [(40+X)*tanα*2]*[(40+X)*tanβ*2] ÷ cos(90-θ), wherein, * is a multiplication sign, θ is the installation angle of the windshield 10, i.e., the angle between the windshield 10 and the horizontal plane, and X is the distance between the front panel 211 of the laser radar 20 and the windshield 10.

[0044] In some embodiments, the windshield 10 is, for example, a front windshield, and θ is, for example, set to 18-35° or adjusted and set to other values according to actual needs.

[0045] The area S of the projection area of the detection signal of the laser radar 20 on the surface of the windshield 10 in the above windshield assembly is 3500-10000 mm 2 2 ​The area S is small enough, so that there is enough space to set the anti-reflection film 11 on the vehicle window glass 10 to meet the actual requirements of signal transmission and reception, and the area of the anti-reflection film 11 set on the vehicle window glass 10 is small, so that the anti-reflection film 11 can avoid occupying the main viewing area or the camera area, and the installation is easier, and the film coating cost is reduced.

[0046] In some embodiments, the area S includes but is not limited to 3500mm 2 , 4000mm 2 , 4500mm 2 , 5000mm 2 , 5500mm 2 , 5800mm 2 , 6000mm 2 , 6500mm 2 , 7000mm 2 , 7500mm 2 , 8000mm 2 , 8500mm 2 , 9000mm 2 , 9500mm 2 , 10000mm 2 , etc. The actual requirements can be flexibly adjusted and set.

[0047] In one embodiment, under the premise of the same FOV angle, the laser radar 20 of the embodiment has a relatively smaller projection area S on the vehicle window glass 10. After simulation calculation, when the horizontal distance X is set to 1mm and the installation angle θ is 30°, the projection area S is 5000mm 2 left and right, which is one third of the projection area of the laser radar 20 (for example, as shown in Figure 3 ) on the vehicle window glass 10 in the related art, that is, the information acquisition area is greatly reduced.

[0048] In some embodiments, the shape of the anti-reflection film 11 includes but is not limited to a trapezoidal shape, a rectangular shape, a circular shape, an elliptical shape, etc. The actual requirements can be flexibly adjusted and set.

[0049] In one embodiment, the anti-reflection film 11 is in a trapezoidal shape, the length of the top edge of the anti-reflection film 11 is 2cm to 10cm, the length of the bottom edge of the anti-reflection film 11 is 7cm to 26cm, and the distance between the top edge and the bottom edge of the anti-reflection film 11 is 4cm to 11cm. In this way, the size of the anti-reflection film 11 is reasonably designed. On the one hand, the design size of the anti-reflection film 11 is large enough to completely cover the information acquisition area to meet the actual requirements of signal transmission and reception. On the other hand, the design size of the anti-reflection film 11 is not too large to increase the film coating cost.

[0050] In some embodiments, the top edge length of the anti-reflection film 11 is, for example, 2 cm, 5 cm, 7 cm, 10 cm. In addition, the bottom edge length of the anti-reflection film 11 is greater than the top edge length of the anti-reflection film 11, for example, 7 cm, 10 cm, 15 cm, 20 cm, 26 cm. In addition, the distance between the top edge and the bottom edge of the anti-reflection film 11, that is, the height of the trapezoid, is, for example, 4 cm, 6 cm, 8 cm, 10 cm, 11 cm.

[0051] Please refer to Figure 1 In an embodiment, the width of the housing 21 of the lidar 20 is W, the depth of the housing 21 is D, and the height of the housing 21 is H. W is 100 mm to 200 mm, for example, 100 mm, 130 mm, 140 mm, 160 mm, 170 mm, 200 mm, or any value other than 100 mm to 200 mm. D is 60 mm to 150 mm, for example, 60 mm, 80 mm, 100 mm, 120 mm, 140 mm, 150 mm, or any value other than 60 mm to 150 mm. H is 15 mm to 50 mm, for example, 15 mm, 20 mm, 35 mm, 40 mm, 45 mm, 50 mm, or any value other than 15 mm to 50 mm.

[0052] In a specific embodiment, W is 120 mm to 150 mm, D is 80 mm to 120 mm, and H is 25 mm to 40 mm. It can be seen that when designing the housing 21 of the lidar 20, the depth D is relatively small, and the width W can be relatively large. In this way, the extension length of the lidar 20 in the depth direction is reduced, thereby reducing the occupation of the space in the driver's cabin. The extension of the size W in the width direction can compensate for the shortening in the depth direction in terms of volume to meet the space requirements of the internal components of the lidar 20.

[0053] In some embodiments, the lidar 20 is designed as a vehicle-grade lidar, and the product has high level and performance.

[0054] In some embodiments, the lidar 20 has various forms, such as a semi-solid-state lidar, a pure solid-state lidar, and a mechanical lidar.

[0055] Among them, the mechanical laser radar is the earliest type of laser radar applied to autonomous driving. Its characteristic is that the laser generator is vertically arranged and can rotate 360°, and the surrounding environment is scanned comprehensively through rotation. The mechanical laser radar can perform 3D scanning through physical rotation, and the surrounding environment is comprehensively covered to form a point cloud. The point cloud is a spatial point data set obtained by laser radar scanning, and each point includes three-dimensional coordinate information (X, Y, Z) and laser reflection intensity information, etc., so as to create a 3D map. However, the high-frequency rotation and complex mechanical structure cause the average failure time to be only 1000-3000 hours, which is difficult to meet the requirement of 13000 hours of the minimum of vehicle-level equipment. In addition, the mechanical laser radar needs to be arranged at the highest point of the vehicle body to avoid obstruction, which greatly affects the vehicle modeling, and the protruding radar is also more prone to damage. The arrangement of laser radar and other equipment on the roof and the reinforcement structure also easily affect the vehicle center of gravity. In addition, the complex structure of the mechanical laser radar makes the cost higher.

[0056] Please refer to Figure 1 In one embodiment, the laser radar 20 is a semi-solid laser radar. Thus, the semi-solid laser radar is a compromise between the pure solid laser radar and the mechanical laser radar. Compared with the mechanical laser radar, the semi-solid laser radar also only scans a certain angle range in front, and compared with the pure solid laser radar, the semi-solid laser radar also has some smaller moving parts. In addition, the semi-solid laser radar is easier to control in terms of cost, volume, etc., and is more suitable for application in unmanned vehicles under the current technical and industrial background.

[0057] In one embodiment, the semi-solid laser radar, also known as hybrid table laser radar or quasi-state laser radar, has various solutions, including but not limited to MEMS galvanometer, rotating mirror, corner, and various implementations of laser radar 20 products.

[0058] In some embodiments, the resolution of the laser radar 20 is 0.1°* 0.1° to 0.2°* 0.2°.

[0059] In some embodiments, the weight of the laser radar 20 is set to 350g to 600g, preferably 350g to 450g.

[0060] In some embodiments, the working power of the laser radar 20 is 10W to 12W.

[0061] Embodiments and comparative examples: the vehicle window assembly as shown in Figure 1 and the laser radar 20 as shown in Figure 3The vehicle window assembly in the related art is analyzed by comparison, wherein, the laser radar 20 in a semi-solid state is taken as an example, the product specification is 130mm (width W) * 80mm (depth D) * 35mm (height H), and the transmitter-receiver 22 is located at the center position of the shell 21. The field of view angle of the laser radar 20 is as follows, the horizontal direction field of view angle a: ±60°, and the vertical direction field of view angle b: ±12°. The projection area S is equal to [(40+x) * tan60° * 2] * [(40+x) * tan12° * 2] ÷ cos(90°- θ), and the following table is obtained:

[0062] Table 1

[0063]

[0064] Table 2

[0065]

[0066] Through the analysis of the above table, it can be obviously seen that the projection area S of the detection signal of the laser radar 20 in the embodiment on the surface of the vehicle window glass 10 is 3500mm 2 to 10000mm 2 , and the area S is small enough; when θ is the same, the greater the distance X is, the greater the projection area S is.

[0067] The projection area S of the detection signal of the laser radar 20 in the comparative example on the surface of the vehicle window glass 10 is greater than 10000mm 2 .

[0068] Please refer to Figure 2 , Figure 2 , which shows a structural schematic diagram of a vehicle window assembly in another embodiment of the application. In one embodiment, the shell 21 of the laser radar 20 is provided with an opening on the side facing the vehicle window glass 10 and is sealingly attached to the vehicle window glass 10, and the part of the vehicle window glass 10 for sealingly attaching the opening of the laser radar 20 is the front panel 211. In this way, the transmitter-receiver device of the laser radar 20 can be arranged at a relatively closer position to the vehicle window glass 10, so that the projection area S is smaller and easier to adjust the size; in addition, the shell 21 in the embodiment has higher waterproof, dustproof, soundproof, heat dissipation and other properties, which can better protect the core device of the laser radar 20 from the influence of the environment and dust in the vehicle, thereby increasing the service life of the laser radar 20. In addition, the absorption and reflection of the detection signal of the laser radar 20 can be reduced, thereby being more conducive to the increase of the detection distance of the laser radar 20, and further reducing the cost of the laser radar 20 product and playing a certain role in weight reduction.

[0069] In one embodiment, a vehicle comprises the vehicle window assembly in any of the above embodiments.

[0070] The vehicle described above, since the front panel 211 is parallel to the vehicle window glass 10, the distance X between the housing 21 and the vehicle window glass 10 can be designed very small, for example, the distance X is designed to be 1mm-5mm, so that the information acquisition area of the vehicle window glass 10 is reduced, and the area of the anti-reflection film 11 is correspondingly reduced, thereby reducing the coating cost, saving more space for other functional integrated devices, such as infrared cameras, millimeter wave LiDAR, and other auxiliary driving functional devices, thereby greatly reducing the assembly difficulty.

[0071] In the present application, unless specifically defined and limited otherwise, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0072] In the present application, unless specifically defined and limited otherwise, if there are terms such as "first feature on" or "second feature" and the like, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0073] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0074] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A vehicle window assembly, characterized in that, The window assembly includes: The vehicle window glass, wherein the vehicle window glass is equipped with an information collection area; and A lidar unit is provided, positioned on the side of the vehicle window facing inwards, with the lidar oriented towards the window and corresponding to the information acquisition area. The lidar unit includes a housing with a front panel parallel to the window. An anti-reflective coating completely covers the information acquisition area of ​​the window. The lidar unit also includes a transmitter and receiver located inside the housing, with the center of the transmitter and receiver positioned 31mm-80mm from the window. The horizontal field of view (FOV) of the lidar is set to [-α, α], and the vertical field of view (FOV) is set to [-β, β]; where α is from 45° to 75° and β is from 8° to 15°; the detection signals emitted and received by the lidar pass through the vehicle window glass, and the area of ​​the projection region formed by the detection signals of the lidar on the surface of the vehicle window glass is set to S, and the area S satisfies the following calculation formula: Area S = [(40+X)*tanα*2]*[(40+X)*tanβ*2]÷cos(90-θ), where * is a multiplication sign, θ is the mounting angle of the car window glass, and X is the distance between the front panel of the laser radar and the car window glass, which is 1mm-5mm.

2. The window assembly according to claim 1, characterized in that, The distance between the center of the transmitter / receiver and the center of the front panel is 30mm to 75mm.

3. The window assembly according to claim 1, characterized in that, The area S is set to 3500 mm². 2 Up to 10000mm 2 .

4. The window assembly according to claim 1, characterized in that, The antireflective membrane is trapezoidal in shape, with the top edge of the antireflective membrane having a length of 2cm to 10cm, the bottom edge of the antireflective membrane having a length of 7cm to 26cm, and the distance between the top edge and the bottom edge of the antireflective membrane having a length of 4cm to 11cm.

5. The window assembly according to claim 1, characterized in that, The width of the housing of the laser radar is set as W, the depth of the housing is set as D, and the height of the housing is set as H; wherein, W is 100mm to 200mm, D is 60mm to 150mm, and H is 15mm to 50mm.

6. The window assembly according to claim 5, characterized in that, W is 120mm to 150mm, D is 80mm to 120mm, and H is 25mm to 40mm.

7. The window assembly according to claim 1, characterized in that, The housing of the lidar has an opening on the side facing the vehicle window glass and is sealed and fitted to the vehicle window glass. The part of the vehicle window glass used to seal and fit the opening of the lidar is the front panel.

8. The window assembly according to any one of claims 1-7, characterized in that, The lidar is a semi-solid-state lidar.

9. A vehicle, characterized in that, The vehicle includes a window assembly as described in any one of claims 1 to 8.

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