Vehicle window glass and vehicle

Abstract

Provided in the present application are vehicle window glass and a vehicle. The vehicle window glass comprises laminated glass and an anti-reflection layer, wherein the vehicle window glass has a signal transmission area, and the projection of the anti-reflection layer in the signal transmission area at least completely covers the signal transmission area; when observed from the outside of a vehicle, a reflection color, on the vehicle window glass, of visible light incident at an angle of 60° has a Lab1 value, where a1≤0 and b1≤0; and when observed from the inside of the vehicle, a reflection color, on the vehicle window glass, of visible light incident at an angle of 60° has a Lab2 value, where a2≤0 and b2≤0. By means of the vehicle window glass and the vehicle which are provided in the present application, reflection colors of visible light on the vehicle window glass, when observed from the outside and inside of the vehicle, are both neutral colors, so that the problems caused by an anti-reflection layer, such as a camera capturing reddish images, captured images being blurred, and visual comfort being affected, are solved, thereby ensuring the photographic effect of a camera device, enabling a LiDAR and the camera to share a window, and facilitating a functional integrated layout design of the vehicle window glass.

Description

Car windows and vehicles

[0001] This disclosure claims priority to Chinese patent application No. 202411211914.2, filed with the Chinese Patent Office on August 30, 2024, entitled "Window Glass and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of glass technology, specifically relating to automotive window glass and vehicles. Background Technology

[0003] In vehicles, cameras are typically mounted on the inside of laminated glass using brackets. The camera's sensors penetrate the laminated glass to achieve perspective perception and recognition while driving. LiDAR (Light Detection and Ranging) sensors are usually placed on the outside of the vehicle. This arrangement makes LiDAR susceptible to weather conditions, such as rain, snow, and high temperatures, which can cause it to age and become damaged. If LiDAR is placed inside the vehicle, an anti-reflective layer is required. However, when the camera and LiDAR share a window, the color of the anti-reflective layer will affect the camera's image quality, causing issues such as reddish tint, unclear images, and reduced visual comfort. This reduces the camera's image quality and makes it impossible for them to share a window, hindering the functional integration and layout design of the black area within the laminated glass. Summary of the Invention

[0004] In view of this, the first aspect of this application provides a vehicle window glass, the vehicle window glass including laminated glass, the laminated glass including a first glass plate, an adhesive layer and a second glass plate, the adhesive layer being sandwiched between the first glass plate and the second glass plate, the first glass plate having a first and a second opposing side, the second side facing the adhesive layer, and the second glass plate having a third and a fourth opposing side, the third side facing the adhesive layer;

[0005] The window glass has a signal transmission area through which signals from the optical sensor assembly pass. An anti-reflective layer is provided on the fourth surface of the second glass plate. In the thickness direction of the laminated glass, the projection of the anti-reflective layer on the signal transmission area at least completely covers the signal transmission area.

[0006] Viewed from the outside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab1 value, a1≤0 and b1≤0; viewed from the inside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab2 value, a2≤0 and b2≤0.

[0007] The optical sensor assembly includes a camera and a lidar, and the optical signals of both the camera and the lidar can pass through the area covered by the anti-reflective layer in the vehicle window glass.

[0008] Specifically, when viewed from the outside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab1 value, where a1≤-1 and b1≤-1, or a1≤-2 and b1≤-2, or a1≤-3 and b1≤-3, or a1≤-4 and b1≤-4, or a1≤-5 and b1≤-5.

[0009] Specifically, when viewed from inside the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab2 value, where a2≤-0.5 and b2≤-1, or a2≤-1 and b2≤-1.5, or a2≤-1.5 and b2≤-2, or a2≤-2 and b2≤-2.5, or a2≤-2.5 and b2≤-3.

[0010] Specifically, when viewed from the outside of the vehicle, the color of the reflected visible light incident at a 0° angle of incidence has a Lab3 value, where a3≤0 and b3≤0.

[0011] Specifically, when viewed from the outside of the vehicle, the color of the reflected visible light incident at a 0° angle of incidence has a Lab3 value, where a3≤-1 and b3≤-1, or a3≤-2 and b3≤-2, or a3≤-3 and b3≤-3, or a3≤-4 and b3≤-4, or a3≤-5 and b3≤-5.

[0012] The vehicle window glass has a red light ratio R, which is the ratio of the transmittance of the vehicle window glass at wavelengths of 600nm-700nm to that at wavelengths of 440nm-700nm, and R≤0.85.

[0013] The antireflection layer has an antireflection rate of ≥4% for light in the wavelength range of 800nm-1600nm incident at an incident angle of 50°-70°.

[0014] The antireflective layer comprises multiple stacked structures, each of which includes a high refractive index layer and a low refractive index layer stacked sequentially. The high refractive index layer has a refractive index of 2-2.6, and the low refractive index layer has a refractive index of 1.4-2.0. In one stacked structure, the high refractive index layer is closer to the second glass plate than the low refractive index layer.

[0015] The difference between the refractive index of the adjacent high-refractive-index layer and the refractive index of the low-refractive-index layer is greater than 0.3.

[0016] The number of the stacked structures is 2 to 10.

[0017] The material of the high refractive index layer is selected from oxides or dopants of Nb, Ti, Ta, Zr, Hf, and Mo, or nitrides of Si;

[0018] And / or, the material of the low refractive index layer is selected from oxides or oxynitrides of Al, or oxides of Si, or fluorides of Mg, Ba, or Y, or oxynitrides of Si.

[0019] In one of the stacked structures, the thickness of the high refractive index layer is T1, the thickness of the low refractive index layer is T2, and T1 < T2.

[0020] The antireflective layer comprises four stacked structures in sequence along the arrangement direction from the first glass plate to the second glass plate: a first stacked structure, a second stacked structure, a third stacked structure, and a fourth stacked structure. The sum of the thicknesses of the low-refractive-index layers of the first stacked structure and the third stacked structure is T3, and the sum of the thicknesses of the low-refractive-index layers of the second stacked structure and the fourth stacked structure is T4, where T3 / T4 ≤ 0.5.

[0021] The physical thickness of the high refractive index layer is 30nm-200nm;

[0022] And / or, the physical thickness of the low refractive index layer is 80nm-500nm.

[0023] Wherein, the area covered by the anti-reflective layer in the vehicle window glass is defined as S, 10000mm². 2 ≤S≤90000mm 2 .

[0024] The laminated glass has a light-transmitting area and a shielding area, wherein the visible light transmittance of the light-transmitting area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 5%.

[0025] A shielding layer is provided on the shielding area. The shielding layer is located on the periphery of the second side of the first glass plate or the fourth side of the second glass plate, and the shielding layer is disposed away from the signal transmission area.

[0026] Wherein, the visible light transmittance of the first glass plate is greater than or equal to 80%; the visible light transmittance of the second glass plate is greater than or equal to 80%.

[0027] The second aspect of this application provides a vehicle, the vehicle including an optical sensor assembly, a vehicle body and a window glass provided in the first aspect of this application, the window glass being connected to the vehicle body, the optical sensor assembly being connected to the interior of the vehicle body, and the optical signal of the optical sensor assembly being transmitted through the area covered by the anti-reflective layer in the window glass.

[0028] The optical sensor assembly includes a camera and a lidar, and the optical signals of the camera and the lidar are transmitted through the area covered by the anti-reflective layer in the vehicle window glass.

[0029] The vehicle window glass and vehicle provided in this application achieve a neutral color for the reflected color of visible light incident at a 60° angle when viewed from the outside of the vehicle, by ensuring that the first surface of the window glass reflects visible light incident at a 60° angle when viewed from the inside of the vehicle, with a Lab1 value of a1≤0 and b1≤0, and by adjusting the structure of the anti-reflection layer, so that the reflected color of the window glass reflects visible light incident at a 60° angle when viewed from the inside of the vehicle, with a Lab2 value of a2≤0 and b2≤0. This solves the problems of reddish tint, unclear images, and reduced visual comfort caused by the anti-reflection layer, and ensures the shooting effect of the camera equipment.

[0030] Furthermore, both the camera and the LiDAR are located inside the anti-reflective layer, allowing the LiDAR and camera to share a window. This avoids the need for an external LiDAR and improves its lifespan. At the same time, it is more conducive to the functional integration layout design of the black block area of ​​the laminated glass, accelerating the mass production application of built-in LiDAR. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0032] Figure 1 is a cross-sectional schematic diagram of a vehicle window glass provided in one embodiment of this application.

[0033] Figure 2 is a schematic diagram of the structure of the antireflective layer with two stacked structures provided in one embodiment of this application.

[0034] Figure 3 is a schematic diagram of the structure of an antireflective layer with four stacked layers provided in one embodiment of this application.

[0035] Figure 4 is a structural schematic diagram of a vehicle provided in one embodiment of this application.

[0036] Labeling descriptions: Vehicle 1000, window glass 100, laminated glass 10, first glass panel 11, first surface 111, second surface 112, adhesive layer 12, second glass panel 13, third surface 131, fourth surface 132, anti-reflective layer 14, first laminated structure 141, first high refractive index layer 1411, first low refractive index layer 1412, second laminated structure 142, second high refractive index layer 1421, second low refractive index layer 1422, third laminated structure 143, third high refractive index layer 1431, third low refractive index layer 1432, fourth laminated structure 144, fourth high refractive index layer 1441, fourth low refractive index layer 1442, shielding layer 15, signal transmission area 20, optical sensor assembly 200, camera 210, lidar 220, vehicle body 300. Detailed Implementation

[0037] The following are preferred embodiments of this application. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

[0038] Unless otherwise stated or in case of conflict, the terms or phrases used in this application shall have the following meanings:

[0039] In this application, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0040] In this application, "one or more" refers to any one, any two, or any two or more of the listed items. "Several" refers to any two or more.

[0041] The value of x in the chemical formula: If it is clearly defined, the defined range shall prevail. If it is not clearly defined, it can be determined according to the stoichiometric, substoichiometric, or superstoichiometric deposition methods used in the magnetron sputtering process.

[0042] Please refer to Figure 1. This application provides a vehicle window glass 100 (not shown in the figure, but it is recommended to show it and make a label). The vehicle window glass 100 includes laminated glass 10. The laminated glass 10 includes a first glass plate 11, an adhesive layer 12, and a second glass plate 13. The adhesive layer 12 is sandwiched between the first glass plate 11 and the second glass plate 13. The first glass plate 11 has a first surface 111 and a second surface 112 facing each other, with the second surface 112 facing the adhesive layer 12. The second glass plate 13 has a third surface 131 and a fourth surface 132 facing each other, with the third surface 131 facing the adhesive layer 12.

[0043] The vehicle window glass 100 has a signal transmission area 20 through which the signal of the optical sensor assembly 200 passes. An anti-reflective layer 14 is provided on the fourth surface 132 of the second glass plate 13. In the thickness direction of the laminated glass 10, the projection of the anti-reflective layer 14 on the signal transmission area 20 at least completely covers the signal transmission area 20.

[0044] Viewed from the outside of the vehicle, the window glass 100 has a Lab1 value for the color of visible light incident at a 60° angle of incidence, where a1≤0 and b1≤0; viewed from the inside of the vehicle, the window glass 100 has a Lab2 value for the color of visible light incident at a 60° angle of incidence, where a2≤0 and b2≤0.

[0045] Please refer again to Figures 1 and 4. The optical sensor assembly 200 includes a camera 210 and a lidar 220. The optical signals of both the camera 210 and the lidar 220 can pass through the area covered by the anti-reflective layer 14 in the window glass 100, which can be understood as the camera 210 and the lidar 220 sharing a window. When the window glass 100 is installed on the vehicle 1000, the optical sensor assembly 200 is located inside the vehicle 1000. The camera 210 acquires environmental data by capturing light, and the lidar 220 acquires environmental data by emitting and receiving detection signals. The data is then processed and analyzed by the hardware and software system to identify and judge traffic and driving conditions, thereby providing information and driving assistance to the driver. Through the shared window scheme of the camera 210 and lidar 220 described in this invention, the external lidar 220 is avoided, and the service life of the lidar 220 is improved. At the same time, it is more conducive to the functional integration layout design of the laminated glass 10, accelerating the mass production application of the lidar 220.

[0046] Specifically, the first glass plate 11 serves as the outer glass plate of the laminated glass 10. The first glass plate 11 has a first surface 111 and a second surface 112. The first surface 111 faces away from the adhesive layer 12 and is in contact with the external environment of the vehicle, while the second surface 112 is close to the adhesive layer 12. The second glass plate 13 serves as the inner glass plate of the laminated glass 10. The second glass plate 13 has a third surface 131 and a fourth surface 132. The third surface 131 is close to the adhesive layer 12, while the fourth surface 132 faces away from the adhesive layer 12 and is in contact with the internal environment of the vehicle. The adhesive layer 12 connects the second surface 112 and the third surface 131. The visible light transmittance of the first glass plate 11 is greater than or equal to 80%, and the visible light transmittance of the second glass plate 13 is greater than or equal to 80%. The adhesive layer 12 can be a thermoplastic polymer film. The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), and ionic polymer (SGP). The visible light transmittance of the adhesive layer 12 is greater than or equal to 80%. For example, the visible light transmittance of the adhesive layer 12 can be, but is not limited to, 80%, 85%, 90%, or 95%. Exemplarily, the adhesive layer 12 can be a single-layer or multi-layer structure. Examples of multi-layer structures include double-layer, triple-layer, quadruple-layer, and five-layer structures. The adhesive layer 12 can also have other functions, such as providing at least one colored area as a shaded area to reduce sunlight interference with the human eye, adding an infrared absorber to provide sun protection or heat insulation, adding an ultraviolet absorber to provide ultraviolet protection, or having a higher plasticizer content in at least one layer of the multi-layer structure to provide sound insulation.

[0047] The anti-reflective layer 14 is used to improve the transmittance of light in a preset wavelength band, for example, the preset wavelength band can be 800nm-1600nm, etc. The transmittance of the window glass 100 coated with the anti-reflective layer 14 to light in the 800nm-1600nm wavelength range incident at an angle of incidence of 50°-70° is increased by ≥4%. Specifically, the lidar 220 is used to transmit and receive detection signals. The area of ​​the window glass 100 with the anti-reflective layer 14 has a transmittance of at least 4%, preferably at least 5%, more preferably at least 8%, higher than the area without the anti-reflective layer 14. It can also be understood that the anti-reflective layer 14 increases the transmittance of the window glass 100 by at least 4%, preferably at least 5%, more preferably at least 8%, etc. By setting the anti-reflective layer 14, the transmittance of the window glass 100 to the detection signal is improved, thereby improving the detection range and accuracy of the built-in lidar 220.

[0048] The area covered by the anti-reflective layer 14 in the vehicle window glass 100 is S, which is 10000 mm². 2 ≤S≤90000mm 2 For example, 10000mm2 15000mm 2 or 20000mm 2 or 25000mm 2 or 30000mm 2 or 35000mm 2 or 40000mm 2 or 45000mm 2 or 50000mm 2 or 55000mm 2 or 60000mm 2 or 65000mm 2 or 70000mm 2 or 75000mm 2 or 80000mm 2 Etc. Preferably, 12000mm 2 ≤S≤80000mm 2 More preferably, 14000mm 2 ≤S≤70000mm 2 More preferably, 16000mm 2 ≤S≤60000mm 2 More preferably, 20000mm 2 ≤S≤60000mm 2 This allows for a better solution to the problem of the lidar 220 and camera 210 sharing a window while maintaining performance compatibility. Optionally, the signal transmission area 20 can be trapezoidal, rectangular, square, elliptical, etc.

[0049] The laminated glass 10 of this application has a light-transmitting area and a shielding area. The visible light transmittance of the light-transmitting area is greater than or equal to 70%, which is beneficial for occupants of the vehicle to observe the external environment through the light-transmitting area. The visible light transmittance of the shielding area is less than or equal to 5%, which is beneficial for shielding, protecting, and improving the overall aesthetics. Preferably, the visible light transmittance of the top shielding area is less than or equal to 3%, more preferably less than or equal to 1%, further less than or equal to 0.5%, or even almost equal to 0, i.e., opaque. In other embodiments, the light-transmitting area can also be partially used for a head-up display (HUD), that is, as the HUD field of view area to display information such as driving speed, dynamic navigation, and business district information, while the shielding area can be used solely for aesthetic purposes.

[0050] The laminated glass 10 of this application has a shielding layer 15 on its shielding area. The shielding layer 15 is located at the periphery of the second surface 112 of the first glass plate 11 or the fourth surface 132 of the second glass plate 13. The shielding layer 15 avoids the signal transmission area 20 on the laminated glass 10. The material of the shielding layer 15 is usually ink, used to shield and protect the parts inside the vehicle 1000, preventing the parts inside the vehicle 1000 from aging and damage caused by direct sunlight, thereby improving the service life of the parts inside the vehicle 1000. At the same time, the shielding layer 15 can also shield the parts inside the vehicle 1000 to ensure the overall aesthetics when viewed from the outside.

[0051] Specifically, when viewed from the outside of the vehicle, the reflected color of the window glass 100 for visible light incident at a 60° angle has a Lab1 value. This can also be understood as the first surface 111 having a Lab1 value for the reflected color of visible light incident at a 60° angle, where a1 ≤ 0 and b1 ≤ 0. For example, a1 ≤ 0 and b1 ≤ -1, or a1 ≤ -1 and b1 ≤ 0, or a1 ≤ -1 and b1 ≤ -1, or a1 ≤ -1 and b1 ≤ -1. ≤-2, or a1≤-2 and b1≤-1, or a1≤-2 and b1≤-2, or a1≤-2 and b1≤-3, or a1≤-3 and b1≤-2, or a1≤-3 and b1≤-3, or a1≤-3 and b1≤-4, or a1≤-4 and b1≤-3, or a1≤-4 and b1≤-4, or a1≤-4 and b1≤-5, or a1≤-5 and b1≤-4, or a1≤-5 and b1≤-5, etc. Preferably, a1≤-1 and b1≤-1; more preferably, a1≤-2 and b1≤-2; further preferably, a1≤-3 and b1≤-3; even more preferably, a1≤-4 and b1≤-4, or a1≤-5 and b1≤-5. Camera 210 typically receives visible light incident at a 60° angle of incidence. Therefore, by limiting the Lab1 value of the reflected color of the first surface 111 to the visible light incident at a 60° angle of incidence, it is possible to ensure that the visible light reflected color of the window glass 100 when viewed from the outside of the vehicle is a neutral color, thus avoiding affecting the shooting effect of the camera 210 located inside the laminated glass 10. At the same time, it is possible to ensure the color consistency and aesthetics of the entire outer surface of the window glass 100 when viewed from the outside of the vehicle while it is installed in the vehicle.

[0052] Viewed from the outside of the vehicle, the reflected color of the window glass 100 when exposed to visible light at a 0° angle of incidence has a Lab3 value. This can also be understood as the first surface 111 reflecting the reflected color of visible light at a 0° angle of incidence having a Lab3 value, where a3 ≤ 0 and b3 ≤ 0. Specifically, examples could be a3 ≤ 0 and b3 ≤ -1, or a3 ≤ -1 and b3 ≤ 0, or a3 ≤ -1 and b3 ≤ -1, or a3 ≤ -1 and b3 ≤ -2. Or a3≤-2 and b3≤-1, or a3≤-2 and b3≤-2, or a3≤-2 and b3≤-3, or a3≤-3 and b3≤-2, or a3≤-3 and b3≤-3, or a3≤-3 and b3≤-4, or a3≤-4 and b3≤-3, or a3≤-4 and b3≤-4, or a3≤-4 and b3≤-5, or a3≤-5 and b3≤-4, or a3≤-5 and b3≤-5, etc. Preferably, a3≤-1 and b3≤-1; more preferably, a3≤-2 and b3≤-2; further preferably, a3≤-3 and b3≤-3; even more preferably, a3≤-4 and b3≤-4, or a3≤-5 and b3≤-5. By further defining the color of the reflected visible light incident at a 0° angle of incidence of the first surface 111 as having a Lab3 value, it is further possible to ensure that the color of the reflected visible light from the outside of the vehicle window glass 100 is a neutral color, thus avoiding affecting the shooting effect of the camera 210 placed inside the vehicle window glass 100.

[0053] Viewed from inside the vehicle, the window glass 100 reflects visible light incident at a 60° angle of incidence with a Lab2 value. This can also be understood as the antireflective layer 14 on the fourth surface 132 reflecting visible light incident at a 60° angle of incidence with a Lab2 value, where a2 ≤ 0 and b2 ≤ 0. Specific examples include a2 ≤ -0.5 and b2 ≤ -1, or a2 ≤ -1 and b2 ≤ -0.5, or a2 ≤ -1 and b2 ≤ -1.5, or a2 ≤ -1.5 and b2 ≤ -1, or a2 ≤ -1.5 and b2 ≤ -2, or a2 ≤ -2 and b2 ≤ -1.5, or a2 ≤ -2 and b2 ≤ -2.5, or a2 ≤ -2.5 and b2 ≤ -2, or a2 ≤ -2.5 and b2 ≤ -3, or a2 ≤ -3 and b2 ≤ -2.5, etc. Preferably, a3 ≤ -1 and b3 ≤ -1; more preferably, a2 ≤ -0.5 and b2 ≤ -1; further preferably, a2 ≤ -1 and b2 ≤ -1.5; even more preferably, a2 ≤ -1.5 and b2 ≤ -2, or a2 ≤ -2 and b2 ≤ -2.5, or a2 ≤ -2.5 and b2 ≤ -3. By limiting the anti-reflection layer 14 on the fourth surface 132 to have a Lab2 value for the reflected color of visible light incident at a 60° angle of incidence, the visible light reflected color of the window glass 100 observed from the inside of the vehicle is a neutral color. This solves the problems of reddish tint, unclear images, and reduced visual comfort caused by the anti-reflection layer 14, ensuring the shooting effect of the camera 210, realizing the sharing of a window between the lidar 220 and the camera 210, and is more conducive to the functional integration layout design of the laminated glass 10, accelerating the mass production application of the lidar 220.

[0054] The vehicle window glass 100 described in this application has a red light ratio R, which is the ratio of the transmittance of the vehicle window glass 100 at a wavelength of 600nm-700nm to that at a wavelength of 440nm-700nm, and R ≤ 0.85; specifically, examples include R ≤ 0.83, or R ≤ 0.80, or R ≤ 0.77, or R ≤ 0.75, or R ≤ 0.73, or R ≤ 0.70, or R ≤ 0.65, or R ≤ 0.60, or R ≤ 0.55, etc. Preferably, R ≤ 0.80; more preferably, R ≤ 0.77; even more preferably, R ≤ 0.75; and even more preferably, R ≤ 0.70. By limiting the red light ratio R of the window glass 100, it is further ensured that the visible light reflected from the window glass 100 when viewed from inside the vehicle is a neutral color, further avoiding the color of the anti-reflection layer 14 from affecting the shooting effect of the camera 210, and further guaranteeing the shooting effect of the camera 210.

[0055] The antireflective layer 14 of this application includes multiple stacked structures, each of which includes a high-refractive-index layer and a low-refractive-index layer stacked sequentially. In one stacked structure, the high-refractive-index layer is closer to the second glass plate 13 than the low-refractive-index layer. The number of stacked structures is 2 to 10, specifically, for example, 2, 3, 4, 5, 6, 7, 8, 9, or 10 stacked structures. Preferably, 3 to 9; more preferably, 4 to 8.

[0056] Specifically, the antireflective layer 14 can be composed of two, three, or four stacked structures. For example, as shown in Figure 2, the antireflective layer 14 includes two first stacked structures 141 and 142 stacked sequentially along the arrangement direction from the first glass plate 11 to the second glass plate 13. The first stacked structure 141 includes a first high refractive index layer 1411 and a first low refractive index layer 1412, and the second stacked structure 142 includes a second high refractive index layer 1421 and a second low refractive index layer 1422. The first high refractive index layer 1411, the first low refractive index layer 1412, the second high refractive index layer 1421, and the second low refractive index layer 1422 are sequentially stacked on the fourth surface 132.

[0057] For example, as shown in Figure 3, the antireflective layer 14 includes four stacked structures in sequence along the arrangement direction from the first glass plate 11 to the second glass plate 13: a first stacked structure 141, a second stacked structure 142, a third stacked structure 143, and a fourth stacked structure 144. The first stacked structure 141 includes a first high refractive index layer 1411 and a first low refractive index layer 1412; the second stacked structure 142 includes a second high refractive index layer 1421 and a second low refractive index layer 1422; and the third stacked structure 143 includes a third high refractive index layer 1421 and a second low refractive index layer 1422. The high refractive index layer 1431 and the third low refractive index layer 1432, the fourth stacked structure 144 includes a fourth high refractive index layer 1441 and a fourth low refractive index layer 1442; wherein, the first high refractive index layer 1411, the first low refractive index layer 1412, the second high refractive index layer 1421, the second low refractive index layer 1422, the third high refractive index layer 1431, the third low refractive index layer 1432, the fourth high refractive index layer 1441, and the fourth low refractive index layer 1442 are sequentially stacked on the fourth surface 132.

[0058] The refractive index of the high-refractive-index layer is 2-2.6, specifically examples include 2, 2.1, 2.2, 2.3, 2.4, 2.5, or 2.6. The refractive index of the low-refractive-index layer is 1.4-2.0, specifically examples include 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, or 2. The difference between the refractive indices of adjacent high-refractive-index and low-refractive-index layers is greater than 0.3, specifically examples include a difference greater than 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, or 1.2.

[0059] The material for the high refractive index layer is selected from oxides or dopants of Nb, Ti, Ta, Zr, Hf, and Mo, or nitrides of Si, specifically NbOx, ZrOx, TiOx, SiNx, etc. The material for the low refractive index layer is selected from oxides or oxynitrides of Al, or oxides of Si, or fluorides of Mg, Ba, and Y, or oxynitrides of Si, specifically Al2O3, SiO2, MgF2, etc.

[0060] In a multilayer structure, the thickness of the high-refractive-index layer is T1, and the thickness of the low-refractive-index layer is T2, where T1 < T2. Specifically, examples include T1*1.2 < T2, or T1*1.5 < T2, or T1*1.7 < T2, or T1*2 < T2, or T1*2.2 < T2, or T1*2.5 < T2, or T1*2.7 < T2, or T1*3 < T2, etc. Preferably, T1*2 < T2, and more preferably, T1*2.5 < T2. By adjusting the film structure of the antireflection layer 14 and limiting the thickness of the high-refractive-index layer and the low-refractive-index layer, the visible light reflection color of the antireflection layer 14 is made neutral. This ensures the detection and ranging functions of the lidar while preventing the color of the antireflection layer 14 from affecting the shooting effect of the camera 210. It solves problems such as reddish tint, unclear images, and reduced visual comfort caused by the antireflection layer 14, thus guaranteeing the shooting effect of the camera 210.

[0061] The antireflective layer 14 comprises four stacked layers—a first stacked layer, a second stacked layer, a third stacked layer, and a fourth stacked layer—arranged sequentially along the direction from the first glass plate 11 to the second glass plate 13. The sum of the thicknesses of the low-refractive-index layers of the first and third stacked layers is T3, and the sum of the thicknesses of the low-refractive-index layers of the second and fourth stacked layers is T4. T3 / T4 ≤ 0.5, specifically, T3 / T4 ≤ 0.4, or T3 / T4 ≤ 0.3, or T3 / T4 ≤ 0.2, or T3 / T4 ≤ 0.1, etc. Preferably, T3 / T4 ≤ 0.4, and more preferably, T3 / T4 ≤ 0.3.

[0062] The physical thickness of the high-refractive-index layer is 30nm-200nm, specifically, examples include 30nm, 40nm, 50nm, 60nm, 70nm, 80nm, 90nm, 100nm, 120nm, 150nm, 180nm, or 200nm, etc. Preferably, it is 50nm-150nm, more preferably, it is 80nm-120nm. The physical thickness of the low-refractive-index layer is 80nm-500nm, specifically, examples include 80nm, 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, 400nm, 450nm, or 500nm, etc. Preferably, it is 100nm-400nm, more preferably, it is 200nm-300nm.

[0063] In summary, the vehicle window glass 100 with anti-reflection layer 14 provided in this application, through the design and adjustment of the film structure, simultaneously achieves the following: when viewed from the outside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab1 value, a1≤0 and b1≤0; when viewed from the inside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab2 value, a2≤0 and b2≤0; and when viewed from the outside of the vehicle, the color of the reflected visible light incident at a 0° angle of incidence has a Lab3 value, a3≤0 and b3≤0. This ensures that the visible light reflected color of the vehicle window glass 100 is neutral, preventing the color of the anti-reflection layer 14 from affecting the shooting effect of the camera 210. It solves the problems caused by the anti-reflection layer 14 leading to reddish images, unclear images, and reduced visual comfort, thus guaranteeing the shooting effect of the camera 210.

[0064] As shown in Figure 4, this application also provides a vehicle 1000, which includes an optical sensor assembly 200, a vehicle body 300, and a window glass 100 as provided in this application above. The window glass 100 is connected to the vehicle body 300, and the optical sensor assembly 200 is connected to the interior of the vehicle body 300. The optical signal of the optical sensor assembly 200 passes through the area covered by the anti-reflective layer 14 in the window glass 100.

[0065] When the window glass 100 is installed on the vehicle 1000, it is preferably used as the windshield of the vehicle 1000. However, it is not limited to this; the window glass 100 can also be used as the rear windshield or a side window.

[0066] The optical sensor assembly 200 includes a camera 210 and a lidar 220, and the optical signals of the camera 210 and the lidar 220 are transmitted through the area covered by the anti-reflective layer 14 in the window glass 100.

[0067] To make the purpose and advantages of this application clearer, the effects of the vehicle window glass 100 of this application will be further explained in detail below with reference to specific embodiments.

[0068] In Comparative Examples 1-2 and Examples 1-2, the first glass plate 11 and the second glass plate 13 are both transparent glass plates with a physical thickness of 2.1 mm and a visible light transmittance of 90%. The adhesive layer 12 is a PVB film layer with a physical thickness of 0.76 mm. The wavelength of the lidar is 905 nm. The antireflective layer 14 of Comparative Example 1 and Example 1 has a two-layer stacked structure, and the antireflective layer 14 of Comparative Example 2 and Example 2 has a four-layer stacked structure. The specific film materials and physical thicknesses are as follows:

[0069] Comparative Example 1: Transparent glass plate / First high refractive index layer T H1 (NbOx 185nm) / First low refractive index layer T L1 (SiOx 185nm) / Second high refractive index layer T H2 (NbOx 260nm) / Second low refractive index layer T L2 (SiOx 391nm), the antireflection layer of Comparative Example 1 consists of two stacked structures, with the first high refractive index layer in direct contact with the surface of the transparent glass plate.

[0070] Comparative Example 2: Transparent glass plate / First high refractive index layer T H1 (NbOx 73nm) / First low refractive index layer T L1 (SiOx 173nm) / Second high refractive index layer T H2 (NbOx 161nm) / Second low refractive index layer T L2 (SiOx 125nm) / Third high refractive index layer T H3 (NbOx 159nm) / Third low refractive index layer T L3 (SiOx 150nm) / Fourth high refractive index layer T H4 (NbOx 170nm) / Second low-refractive-index layer T L4 (SiOx 282nm), the antireflection layer 14 of Comparative Example 2 is composed of four stacked structures, with the first high refractive index layer in direct contact with the surface of the transparent glass plate.

[0071] Example 1: Transparent glass plate / first high refractive index layer T H1 (NbOx 96nm) / First low-refractive-index layer T L1 (SiOx 166nm) / Second high refractive index layer T H2 (NbOx 138nm) / Second low refractive index layer T L2(SiOx 437nm), the antireflection layer 14 of Example 1 is composed of two stacked structures, with the first high refractive index layer in direct contact with the surface of the transparent glass plate.

[0072] Example 2: Transparent glass plate / first high refractive index layer T H1 (NbOx 41nm) / First low refractive index layer T L1 (SiOx 195nm) / Second high refractive index layer T H2 (NbOx 73nm) / Second low refractive index layer T L2 (SiOx 238nm) / Third high refractive index layer T H3 (NbOx 52nm) / Third low refractive index layer T L3 (SiOx 95nm) / Fourth high refractive index layer T H4 (NbOx 111nm) / Second low refractive index layer T L4 (SiOx 181nm), the antireflection layer 14 of Example 2 is composed of four stacked structures, with the first high refractive index layer in direct contact with the surface of the transparent glass plate.

[0073] The thickness ratio T3 / T4, anti-reflection rate, red light ratio R, Lab1 values ​​a1 and b1 of visible light incident at a 60° angle of incidence when viewed from the outside of the vehicle, Lab2 values ​​a2 and b2 of visible light incident at a 60° angle of incidence when viewed from the inside of the vehicle, and Lab3 values ​​a3 and b3 of visible light incident at a 0° angle of incidence when viewed from the outside of the vehicle were measured in the window glass 100 of the window glass 100 with the anti-reflection layer 14. The anti-reflection rate is the increase in the transmittance of the detection signal with a wavelength of 905 nm in the area of ​​the window glass 100 with the anti-reflection layer 14. The above measurement results are recorded in Table 1.

[0074] Table 1 Performance parameters of laminated glass in Comparative Examples 1-2 and Examples 1-2

[0075] As can be seen from Table 1:

[0076] Comparative Example 1 has defects such as a1 > 0, b1 > 0, and a2 > 0, which cause the camera to produce reddish images, unclear images, and affect visual comfort, thus reducing the shooting effect of Camera 210.

[0077] Comparative Example 2 has defects such as T3 / T4 greater than 0.5, red light ratio R greater than 0.85, a1 greater than 0, b2 greater than 0, a3 greater than 0, and b3 greater than 0, which cause the camera to produce reddish images, unclear images, affect visual comfort, and reduce the shooting effect of the camera equipment.

[0078] In Examples 1-2, the red light ratio R is less than 0.85, a1≤0 and b1≤0, a2≤0 and b2≤0, a3≤0 and b3≤0, and in Example 2, T3 / T4 is less than 0.5. This ensures that the visible light reflected from the window glass 100 when viewed from the outside and inside of the vehicle is a neutral color, avoiding the color of the anti-reflection layer 14 from affecting the shooting effect of the camera 210. This solves the problems of the anti-reflection layer 14 causing the camera to shoot red, resulting in unclear images and affecting visual comfort, thus ensuring the shooting effect of the camera 210.

[0079] The above provides a detailed description of the embodiments provided in this application. This document elucidates and explains the principles and implementation methods of this application. The above description is only intended to help understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A type of vehicle window glass, characterized in that, The vehicle window glass includes laminated glass, which includes a first glass plate, an adhesive layer, and a second glass plate. The adhesive layer is sandwiched between the first glass plate and the second glass plate. The first glass plate has a first side and a second side facing each other, with the second side facing the adhesive layer. The second glass plate has a third side and a fourth side facing each other, with the third side facing the adhesive layer. The window glass has a signal transmission area through which signals from the optical sensor assembly pass. An anti-reflective layer is provided on the fourth surface of the second glass plate. In the thickness direction of the laminated glass, the projection of the anti-reflective layer on the signal transmission area at least completely covers the signal transmission area. Viewed from the outside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab1 value, a1≤0 and b1≤0; viewed from the inside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab2 value, a2≤0 and b2≤0.

2. The vehicle window glass as described in claim 1, characterized in that, The optical sensor assembly includes a camera and a lidar, both of which have optical signals that can pass through the area covered by the anti-reflective layer in the vehicle window glass.

3. The vehicle window glass as described in claim 1, characterized in that, Viewed from the outside of the vehicle, the color of the reflected visible light incident at a 60° angle of incidence has a Lab1 value, a1≤-1 and b1≤-1, or a1≤-2 and b1≤-2, or a1≤-3 and b1≤-3, or a1≤-4 and b1≤-4, or a1≤-5 and b1≤-5.

4. The vehicle window glass as described in claim 1, characterized in that, Viewed from inside the vehicle, the window glass reflects visible light incident at a 60° angle of incidence with a Lab2 value of a2 ≤ -0.5 and b2 ≤ -1, or a2 ≤ -1 and b2 ≤ -1.5, or a2 ≤ -1.5 and b2 ≤ -2, or a2 ≤ -2 and b2 ≤ -2.5, or a2 ≤ -2.5 and b2 ≤ -3.

5. The vehicle window glass as described in claim 1, characterized in that, Viewed from the outside of the vehicle, the color of the reflected visible light incident at a 0° angle of incidence has a Lab3 value, where a3≤0 and b3≤0.

6. The vehicle window glass as described in claim 5, characterized in that, Viewed from the outside of the vehicle, the color of the reflected visible light incident at a 0° angle of incidence has a Lab3 value, a3≤-1 and b3≤-1, or a3≤-2 and b3≤-2, or a3≤-3 and b3≤-3, or a3≤-4 and b3≤-4, or a3≤-5 and b3≤-5.

7. The vehicle window glass as described in claim 1, characterized in that, The vehicle window glass has a red light ratio R, which is the ratio of the transmittance of the vehicle window glass at wavelengths of 600nm-700nm to that at wavelengths of 440nm-700nm, and R≤0.

85.

8. The vehicle window glass as described in claim 1, characterized in that, The anti-reflection layer has a transmittance of ≥4% for light in the wavelength range of 800nm-1600nm incident at an incident angle of 50°-70°.

9. The vehicle window glass as described in claim 1, characterized in that, The antireflective layer includes multiple stacked structures, each of which includes a high refractive index layer and a low refractive index layer stacked sequentially. The high refractive index layer has a refractive index of 2-2.6, and the low refractive index layer has a refractive index of 1.4-2.

0. In one of the stacked structures, the high refractive index layer is closer to the second glass plate than the low refractive index layer.

10. The vehicle window glass as described in claim 9, characterized in that, The difference between the refractive index of the adjacent high-refractive-index layer and the refractive index of the low-refractive-index layer is greater than 0.

3.

11. The vehicle window glass as described in claim 9, characterized in that, The number of the stacked structures is 2 to 10.

12. The vehicle window glass as described in claim 9, characterized in that, The material of the high refractive index layer is selected from oxides or dopants of Nb, Ti, Ta, Zr, Hf, and Mo, or nitrides of Si; And / or, the material of the low refractive index layer is selected from oxides or oxynitrides of Al, or oxides of Si, or fluorides of Mg, Ba, or Y, or oxynitrides of Si.

13. The vehicle window glass as described in claim 9, characterized in that, In one of the said stacked structures, the thickness of the high refractive index layer is T1, the thickness of the low refractive index layer is T2, and T1 < T2.

14. The vehicle window glass as described in claim 9, characterized in that, The antireflective layer comprises four stacked structures in sequence along the arrangement direction from the first glass plate to the second glass plate: a first stacked structure, a second stacked structure, a third stacked structure, and a fourth stacked structure. The sum of the thicknesses of the low-refractive-index layers of the first stacked structure and the third stacked structure is T3, and the sum of the thicknesses of the low-refractive-index layers of the second stacked structure and the fourth stacked structure is T4, where T3 / T4 ≤ 0.

5.

15. The vehicle window glass as described in claim 9, characterized in that, The physical thickness of the high refractive index layer is 30nm-200nm; And / or, the physical thickness of the low refractive index layer is 80nm-500nm.

16. The vehicle window glass as described in claim 1, characterized in that, The area covered by the anti-reflective layer in the vehicle window glass is denoted as S, which is 10000 mm². 2 ≤S≤90000mm 2 .

17. The vehicle window glass as described in claim 1, characterized in that, The laminated glass has a light-transmitting area and a shielding area, wherein the visible light transmittance of the light-transmitting area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 5%. A shielding layer is provided on the shielding area. The shielding layer is located on the periphery of the second side of the first glass plate or the fourth side of the second glass plate, and the shielding layer is disposed away from the signal transmission area.

18. The vehicle window glass as described in claim 1, characterized in that, The visible light transmittance of the first glass plate is greater than or equal to 80%; the visible light transmittance of the second glass plate is greater than or equal to 80%.

19. A vehicle, characterized in that, The vehicle includes an optical sensor assembly, a vehicle body, and a window glass as described in any one of claims 1-18, the window glass being connected to the vehicle body, the optical sensor assembly being connected to the interior of the vehicle body, and the optical signal of the optical sensor assembly passing through the area covered by the anti-reflective layer in the window glass.

20. The vehicle as claimed in claim 19, characterized in that, The optical sensor assembly includes a camera and a lidar, and the optical signals of the camera and the lidar are transmitted through the area covered by the anti-reflective layer in the window glass.

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