Vehicle window glass and vehicle

Abstract

The invention provides vehicle window glass and a vehicle. Wherein the vehicle window glass comprises laminated glass and an information acquisition area; the anti-reflection film is arranged on the fourth surface of the laminated glass, the anti-reflection film at least completely covers the information acquisition area in the thickness direction of the laminated glass, the anti-reflection film comprises a plurality of laminated structures, and each laminated structure comprises a high-refractive-index layer and a low-refractive-index layer which are sequentially laminated from the fourth surface of the inner glass plate to the direction away from the outer glass plate; the transmittance of the area covered by the antireflection film in the window glass subjected to heat treatment to light rays which are incident at the incidence angle of 62-68 degrees and have the wavelength range of 900-1000 nm is improved by at least 1% compared with that before heat treatment. According to the anti-reflection film, the requirement of the vehicle window glass for the transmittance of light with the wavelength of 900-1000 nm is met, and the anti-reflection film can adapt to the production process of a front windshield.

Description

Technical Field

[0001] The present application relates to the technical field of glass products, in particular to vehicle window glass and vehicles. Background Art

[0002] Typically, sensors are installed near the top of the windshield in the car, such as visible light cameras, millimeter wave radars, lidars, ultrasonic radars, etc. These sensors capture the driving environment outside the car and process it into image data to assist in autonomous driving. Currently, the mainstream choices for sensors include lidars and infrared cameras, especially lidars and infrared cameras that can emit and receive wavelengths of 905nm. Therefore, the transmittance of car window glass to light with a wavelength of 905nm is crucial. However, current car window glass, especially car window glass at the installation angle, will hinder the transmission of infrared light to a certain extent, so that the transmittance of infrared light cannot meet the needs of autonomous driving for high-precision detection.

[0003] Patent CN101678651A discloses a tinted laminated vehicle window glass, which has a transmittance of at least 30% for light in the wavelength range of 400nm-2100nm and a transmittance of at least 32% for light in the wavelength range of 750nm-1300nm. However, the transmittance of the laminated glass still does not meet the use requirements of 905nm wavelength laser radar or infrared camera. Patent CN101037099A discloses a device and method for installing an infrared camera with an outward viewing angle in a vehicle, by arranging an infrared transmission insert in a through hole of the windshield, and allowing the light emitted / received by the infrared camera to pass through the infrared transmission insert to reduce the loss of light. However, this solution destroys the integrity of the windshield and reduces the safety performance of the vehicle. In addition, this solution also has the problem of complex production process.

[0004] In comparison, an anti-reflection film is set on the surface of the automobile glass close to the interior of the car. Through professional film system structure design, the automobile glass can have a corresponding anti-reflection effect for light of a specific wavelength at a specific loading angle. In the preparation process of the automobile windshield, the glass needs to be heat-treated (including bending, pressing or tempering molding, etc.), and the heat treatment process is often carried out after the glass surface coating process. The temperature of bending or pressing is usually between 550℃ and 650℃. However, at the heat treatment temperature, the anti-reflection film will have uncertain risks such as softening deformation, thickness change, and film material change, which will affect the anti-reflection effect of the anti-reflection film or even make the anti-reflection effect invalid. Therefore, in response to this problem, the present invention has conducted targeted research on the film system structure of the anti-reflection film and the transformation of the physicochemical properties of the film layer at high temperature, and designed a special anti-reflection film to adapt to the front windshield production process. Summary of the invention

[0005] The purpose of the present application is to provide a vehicle window glass and a vehicle, wherein after heat treatment, the transmittance effect of the anti-reflection film on light within the wavelength range of 900nm-1000nm can be improved, which not only meets the transmittance requirements of the vehicle window glass for light with a wavelength of 900nm-1000nm, but also enables the anti-reflection film to adapt to the production process of the front windshield, especially after the vehicle window glass is subjected to heat treatment processes such as bending and pressing, the transmittance of the information collection area of ​​the vehicle window glass for light within the wavelength range of 900nm-1000nm is maintained at a high transmittance.

[0006] In a first aspect, the present application provides a vehicle window glass, comprising a laminated glass and an information collection area, wherein the laminated glass comprises an outer glass plate, an intermediate layer and an inner glass plate, wherein the intermediate layer is sandwiched between the outer glass plate and the inner glass plate, wherein the outer glass plate comprises a first surface and a second surface disposed opposite to the first surface, wherein the second surface faces the intermediate layer, and wherein the inner glass plate comprises a third surface and a fourth surface disposed opposite to the third surface, wherein the third surface faces the intermediate layer;

[0007] An anti-reflection film is provided on the fourth surface of the inner glass plate. Along the thickness direction of the laminated glass, the anti-reflection film at least completely covers the information collection area of ​​the vehicle window glass. The anti-reflection film includes a plurality of laminated structures. Along the thickness direction of the vehicle window glass, the plurality of laminated structures are sequentially laminated. From the fourth surface of the inner glass plate to the direction away from the outer glass plate, each of the laminated structures includes a high refractive index layer and a low refractive index layer laminated in sequence.

[0008] After the heat treatment, the transmittance of the area covered by the antireflection film in the vehicle window glass to light with a wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is increased by at least 1% compared with that before the heat treatment.

[0009] It is understandable that by providing an anti-reflection film in the information collection area of ​​the vehicle window glass, the transmittance of the information collection area of ​​the vehicle window glass to light within a wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° can be improved. The anti-reflection film is laminated on the surface of the laminated glass without destroying the structural integrity of the laminated glass, thereby ensuring the safety performance of the vehicle.

[0010] In a possible implementation manner, the plurality of laminated structures are divided into a first laminated structure and a second laminated structure, and along the thickness direction of the laminated glass, all the first laminated structures are closer to the inner glass plate than all the second laminated structures;

[0011] The high refractive index layer of the first stacked structure is a partially oxidized metal oxide before the heat treatment, and the high refractive index layer of the first stacked structure is a fully oxidized metal oxide after the heat treatment.

[0012] In a possible embodiment, the material of the high refractive index layer of the first stacked structure is a metal oxide M m O n , where M is a metal element, O is an oxygen element, and m is the m O n The number of atoms corresponding to the metal element in the molecule, n is the number of O atoms, the valence of the metal element is p, and before the heat treatment, the range of n is: n<p*m / 2.

[0013] In a possible implementation manner, before the heat treatment, the range of n is: n≤p*m*0.35.

[0014] In a possible implementation, the metal element is at least one of Nb, La, Ta, Ti, Mo, Hf, and Zr.

[0015] In a possible implementation manner, the number of the first stacked structures is 1-3.

[0016] In a possible implementation manner, after the heat treatment, the thickness of each high refractive index layer of the first stacked structure increases by at least 10% compared with that before the heat treatment.

[0017] In a possible implementation manner, the material of the high refractive index layer of the second stacked structure is Si, NbO x 、SiN x 、ZrO x 、TiO x 、TiN x 、MoO x 、TaO x , HfO x At least one of .

[0018] In a possible implementation manner, the material of the low refractive index layer of the first stacked structure is SiO x MgF x 、AlO x , WO x , YF x , BaF x At least one of the following, the material of the low refractive index layer of the second stacked structure is SiO x MgF x 、AlO x , WO x , YF x , BaF x At least one of .

[0019] In a possible implementation manner, the refractive index of the high refractive index layer is 2.1-3.5, and the refractive index of the low refractive index layer is 1.4-1.9.

[0020] In a possible implementation manner, a 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.

[0021] In a possible implementation manner, the number of the stacked structures is 4-10.

[0022] In a possible implementation manner, the total thickness of the antireflection film is 300 nm-1500 nm.

[0023] In a possible implementation manner, before the heat treatment, the transmittance of the information collection area of ​​the vehicle window glass to light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is ≥76%.

[0024] In one possible embodiment, the transmittance of the information collection area provided with the anti-reflection film for light in the wavelength range of 900nm-1000nm with an incident angle of 62°-68° is increased by at least 4% compared to the transmittance of the information collection area not provided with the anti-reflection film for light in the wavelength range of 900nm-1000nm with an incident angle of 62°-68°.

[0025] In a possible implementation manner, at least one of the outer glass plate and the inner glass plate has a transmittance of at least 91% in a wavelength range of 900-1000 nm.

[0026] In a possible implementation manner, the temperature range of the heat treatment is 550°C-650°C.

[0027] In a possible implementation, after the heat treatment, measured from one side of the first surface, the a value of the visible light reflection color of the information collection area is less than or equal to -2, and the b value is less than 0, where a is the red-green chromaticity value and b is the yellow-blue chromaticity value.

[0028] In a possible implementation manner, the vehicle window glass further includes a heat insulation film, and the heat insulation film is arranged on the second surface of the outer glass plate and / or the third surface of the inner glass plate to avoid the information collection area of ​​the vehicle window glass.

[0029] A second aspect of the present application provides a vehicle, comprising a vehicle body and the vehicle window glass as described above, wherein the vehicle window glass is connected to the vehicle body.

[0030] The beneficial effect of the present application is that by providing an anti-reflection film in the information collection area of ​​the vehicle window glass, the transmittance of the information collection area of ​​the vehicle window glass to light within a wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° can be improved. By heat treatment, the light transmittance of the information collection area of ​​the vehicle window glass can be further improved, which is conducive to the laser radar or infrared camera with a wavelength of 905nm to obtain high-precision detection results.

[0031] In addition, after the anti-reflection film is subjected to a high-temperature heat treatment of 550°C-650°C, the light transmittance of the information collection area of ​​the window glass can be improved, that is, the anti-reflection film has good thermal stability. Since the processing technology of the window glass is usually carried out after the coating process on the surface of the laminated glass, the anti-reflection film can adapt to the processing technology of the window glass (processing temperature range is 550°C-650°C), such as bending, pressing or tempering treatment. In this way, after the window glass is subjected to heat treatment, the optical performance of the information collection area of ​​the window glass will not only not degrade, but will be improved, which is conducive to improving the transmittance of the information collection area of ​​the window glass to the light in the wavelength range of 900nm-1000nm. In particular, when the window glass is a windshield, after the window glass is subjected to processes such as bending and pressing, the transmittance of the information collection area of ​​the window glass to the light in the wavelength range of 900nm-1000nm remains high.

[0032] In addition, the anti-reflection film is stacked on the fourth side of the laminated glass and can cover the information collection area of ​​the window glass without destroying the structural integrity of the laminated glass, thereby ensuring the safety performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0034] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the vehicle window glass along the thickness direction;

[0035] Figure 3 for Figure 2 The schematic diagram of the plane structure of the vehicle window glass perpendicular to the thickness direction shown includes two implementation modes (a) and (b);

[0036] Figure 4 for Figure 2 The schematic diagram of the structure of the anti-reflection film of the vehicle window glass shown;

[0037] Figure 5 Schematic diagram of the structure of the antireflection film in Example 1 of the present application;

[0038] Figure 6Schematic diagram of the structure of the antireflection film in Example 2 of the present application;

[0039] Figure 7 for Figure 2 The cross-sectional structure diagram of the vehicle window glass shown contains a heat insulation film and a shielding layer.

[0040] Description of reference numerals:

[0041] 1000-vehicle, 100-window glass, 200-vehicle body, 10-laminated glass, 20-anti-reflection film, 11-outer glass plate, 12-middle layer, 13-inner glass plate, 111-first surface, 112-second surface, 131-third surface, 132-fourth surface, S1-information collection area, S11-side, S2-non-information collection area, S21-viewing area, S22-shielding area, S221-outer edge, S222-inner edge, 20a-first laminated structure, 20b-second laminated structure, 40-thermal insulation film, 50-shielding layer. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0043] The present application provides a vehicle window glass 100, which can improve the transmittance of the vehicle window glass 100 to 905nm wavelength light. The vehicle window glass 100 of the present application is applied to a vehicle 1000, which can ensure the safety performance of the vehicle 1000.

[0044] See also Figure 1 The vehicle 1000 includes a vehicle body 200 and a vehicle window glass 100, and the vehicle window glass 100 is connected to the vehicle body 200. The vehicle window glass 100 may be, but is not limited to, a front windshield, a side window glass, a rear windshield, and a sunroof glass of the vehicle 1000. In the embodiment of the present application, the vehicle window glass 100 is only used as a front windshield for illustration.

[0045] See also Figure 2, the vehicle window glass 100 includes a laminated glass 10 and an information collection area S1. The information collection area S1 is used to provide a signal transmission area for a sensor (not shown) to collect signals. When the vehicle window glass 100 is installed on a vehicle 1000, the sensor is arranged inside the vehicle 1000, and the signals emitted and / or received by the sensor will pass through the information collection area S1 of the vehicle window glass 100. The laminated glass 10 includes an outer glass plate 11, an intermediate layer 12 and an inner glass plate 13, and the intermediate layer 12 is stacked between the outer glass plate 11 and the inner glass plate 13. The outer glass plate 11 includes a first surface 111 and a second surface 112 arranged opposite to each other, and the first surface 111 faces the outside of the vehicle 1000 and belongs to the outer surface of the vehicle window glass 100. The second surface 112 faces the intermediate layer 12. The inner glass plate 13 includes a third surface 131 and a fourth surface 132 which are arranged opposite to each other, the third surface 131 faces the intermediate layer 12, and the fourth surface 132 faces the interior of the vehicle 1000, and belongs to the inner surface of the vehicle window glass 100. The intermediate layer 12 connects the second surface 112 and the third surface 131. In the present application, the anti-reflection film 20 is arranged on the fourth surface 132 of the inner glass plate 13, and the anti-reflection film 20 at least completely covers the information collection area S1 of the vehicle window glass 100.

[0046] It should be noted that the laminated glass 10 can be in the shape of a flat plate, or in the shape of a curved surface or an arc surface. The shape of the laminated glass 10 is not limited to the shape described above, and it can be any shape that meets the use requirements of the vehicle window glass 100. The present application does not impose strict restrictions on the shape of the laminated glass 10.

[0047] At least one of the outer glass plate 11 and the inner glass plate 13 has a transmittance of at least 91% in the wavelength range of 900-1000nm, and ultra-clear float glass can be selected. In one embodiment, the outer glass plate 11 and the inner glass plate 13 are both ultra-clear float glass, and the use of ultra-clear float glass is conducive to improving the transmittance of the window glass 100 to the 905nm wavelength light emitted and received by the sensor. The thickness of the outer glass plate 11 is w1, and the thickness of the inner glass plate 13 is w2, wherein w1 is greater than or equal to w2. In one possible implementation, w1 is greater than or equal to 2 times of w2. In another possible implementation, w1 is greater than or equal to 2.5 times of w2.

[0048] For example, the thickness w1 of the outer glass plate 11 is 3.2 mm, and the thickness w2 of the inner glass plate 13 is 1.1 mm. Since the outer glass plate 11 needs to have high durability and impact resistance to external obstacles, the outer glass plate 11 is preferably thick glass; and in order to reduce the absorption of light by the inner glass plate 13, the thickness of the inner glass plate 13 is relatively small. In order to meet the requirements of glass strength, the inner glass plate 13 can be tempered to improve the strength, so that it can reduce the absorption of light as much as possible on the basis of sufficient strength, and at the same time meet the requirements of lightweight as much as possible, and reduce the total thickness of the inner glass plate 13 and the outer glass plate 11.

[0049] In the present application, the middle layer 12 is a thermoplastic polymer layer, which is used to bond the outer glass plate 11 and the inner glass plate 13 to form a sandwich structure. The material of the middle layer 12 includes but is not limited to polyvinyl butyral (PVB), polyolefinelastomer (POE), ethylene-vinyl acetate copolymer (EVA), polyurethane (PU), etc., preferably PVB. The use of PVB can effectively suppress the propagation of noise, so that the laminated glass 10 has a sound insulation effect.

[0050] In the present application, the transmittance of the laminated glass 10 to light within a wavelength range of 800nm-1600nm incident at an incident angle of 65° is 68%.

[0051] Please also read Figure 3 (a) and (b), in the present application, the vehicle window glass 100 also includes an information collection area S1 and a non-information collection area S2, the information collection area S1 and the non-information collection area S2 do not overlap, and the non-information collection area S2 surrounds the information collection area S1. The non-information collection area S2 includes a viewing area S21 and a shielding area S22. The viewing area S21 is a transparent area used for light transmission indoors and outdoors, that is, the main viewing area of ​​the car window. The shielding area S22 is used to prevent visible light from passing through the laminated glass 10. In other embodiments, the viewing area S21 may also be partially used for a head-up display (HUD), that is, as a HUD viewing area to display information such as driving speed, dynamic navigation, and business district information, and the shielding area S22 may also be used only for aesthetics. This application does not strictly limit the use of the non-information collection area S2.

[0052] In the embodiment of the present application, the information collection area S1, the viewing area S21 and the shielding area S22 do not overlap. In a possible implementation, Figure 3(a), the information collection area S1 is located in the visual field area S21, the visual field area S21 is located outside the information collection area S1, the visual field area S21 is surrounded by the information collection area S1, the visual field area S21 completely surrounds the information collection area S1, and the shape of the visual field area S21 matches the shape of the laminated glass 10. The shielding area S22 is in the shape of a ring frame, and the shielding area S22 surrounds the peripheral side of the visual field area S21; the outer side S221 of the shielding area S22 is the outer edge of the laminated glass 10, and the inner side S222 of the shielding area S22 is connected to the peripheral side of the visual field area S21. The side S11 of the information collection area S1 and the inner side S222 of the shielding area S22 are arranged at intervals.

[0053] In another possible implementation, Figure 3 (b), the information collection area S1 can be set at the edge of the shielding area S22 close to the middle of the vehicle window glass 100, and the information collection area S1 can extend from the edge of the shielding area S22 close to the roof side to the middle of the vehicle window glass 100.

[0054] The information collection area S1 may also be a triangle, rectangle, trapezoid, pentagon, hexagon, etc. The shielding area S22 may also be other shapes. The viewing area S21 and the information collection area S1 may also be in other positional relationships, and the viewing area S21 may also be in other shapes. This application does not impose strict restrictions on the location and shape of the information collection area S1 and the viewing area S21.

[0055] Please refer to Figure 2 and Figure 3 , the anti-reflection film 20 is arranged on the fourth surface 132 of the inner glass plate 13. Specifically, the anti-reflection film 20 is arranged on the laminated glass 10 at a position corresponding to the information collection area S1. Along the thickness direction of the laminated glass 10, the orthographic projection of the anti-reflection film 20 on the laminated glass 10 at least completely covers the information collection area S1; that is, the orthographic projection of the anti-reflection film 20 on the laminated glass 10 at least completely overlaps with the information collection area S1 (the width and length of the anti-reflection film 20 are at least equal to the width and length of the information collection area S1, or the width and length of the anti-reflection film 20 are greater than the width and length of the information collection area S1, length to length, width to width). By arranging the anti-reflection film 20 on the fourth surface 132 of the inner glass plate 13, the reflection of the vehicle window glass 100 to the light in the wavelength range of 900nm-1000nm can be reduced, and the light transmittance of the information collection area S1 of the vehicle window glass 100 can be improved.

[0056] In the present application, the transmittance of the information collection area S1 provided with the anti-reflection film 20 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is increased by at least 4% compared with the transmittance of the information collection area S1 without the anti-reflection film 20 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68°. In other words, by providing the anti-reflection film 20, the transmittance of the information collection area S1 of the vehicle window glass 100 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is increased by at least 4%. Preferably, the transmittance of the information collection area S1 of the vehicle window glass 100 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is increased by at least 6%. More preferably, the transmittance of the information collection area S1 of the vehicle window glass 100 to light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° increases by at least 8%.

[0057] In the present application, the transmittance of the information collection area S1 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is greater than or equal to 76%. In one possible implementation, the transmittance of the information collection area S1 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is 78%. In another possible implementation, the transmittance of the information collection area S1 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is 80%. In another possible implementation, the transmittance of the information collection area S1 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is 85%. In another possible implementation, the transmittance of the information collection area S1 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is 88%. In another possible implementation, the transmittance of the information collection area S1 to light within a wavelength range of 900 nm-1000 nm incident at an incident angle of 62°-68° is 90%.

[0058] In the present application, the antireflection film 20 includes a plurality of laminated structures. From the fourth surface 132 of the inner glass plate 13 to the direction away from the outer glass plate 11, the laminated structure includes a high refractive index layer and a low refractive index layer laminated in sequence. For example, the high refractive index layer closest to the fourth surface 132 of the inner glass plate 13 and the low refractive index layer closest to the fourth surface 132 of the inner glass plate 13 constitute a first laminated structure, and the high refractive index layer second closest to the fourth surface 132 of the inner glass plate 13 and the low refractive index layer second closest to the fourth surface 132 of the inner glass plate 13 constitute a second laminated structure. As the number of laminated structures increases, the number of film layers of the antireflection film 20 also increases accordingly and is always an even number. Starting from the fourth surface 132 of the inner glass plate 13, along the thickness direction of the anti-reflection film 20, the odd-numbered layers are high refractive index layers, and the even-numbered layers are low refractive index layers; the layers in contact with the fourth surface 132 of the inner glass plate 13 are high refractive index layers, and the layers farthest from the fourth surface 132 of the inner glass plate 13 are low refractive index layers. By stacking multiple laminated structures, light forms multi-layer reflections at the contact interfaces of multiple high refractive index layers and low refractive index layers, and according to the half-wave destructive principle, the function of anti-reflection or anti-reflection is finally achieved on the glass surface.

[0059] In the present application, the refractive index of the high refractive index layer is 2.1-3.5, and the refractive index of the low refractive index layer is 1.4-1.9. 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.

[0060] In the present application, the antireflection film 20 can be directly deposited on the fourth surface 132 of the inner glass plate 13 by magnetron sputtering, and a continuous vertical coating machine, a cylindrical vertical coating machine or a horizontal coating machine can be used. Preferably, a continuous vertical coating machine is used.

[0061] In this embodiment, the number of the stacked structures is 4 to 10. Specifically, the number of the stacked structures can be 4, 5, 6, 7, 8, 9 or 10. Correspondingly, the number of film layers of the antireflection film 20 can be 8, 10, 12, 14, 16, 18 or 20.

[0062] The total thickness of the anti-reflection film 20 is 300nm-1500nm, which is a physical thickness. As an extension, the description of thickness in the whole text is physical thickness. In one possible embodiment, the total thickness of the anti-reflection film 20 is 600nm-1200nm. In another possible embodiment, the total thickness of the anti-reflection film 20 is 800nm-1000nm. It can be understood that when the thickness of the anti-reflection film 20 is less than 300nm, the thickness of the anti-reflection film 20 is too thin. On the one hand, the anti-reflection effect of the anti-reflection film 20 is limited; on the other hand, it is difficult to adjust the color of the anti-reflection film 20. When the thickness of the anti-reflection film 20 is greater than 1500nm, the thickness of the anti-reflection film 20 is too thick, and the anti-reflection film 20 may be easily detached from the laminated glass 10 due to film stress; in addition, the haze of the anti-reflection film 20 is large, the transmittance is reduced, and the transmittance of light is also affected.

[0063] See also Figure 4 The multiple stacked structures are divided into a first stacked structure 20a and a second stacked structure 20b. The material of the high refractive index layer of the first stacked structure 20a is metal oxide. The material of the high refractive index layer of the second stacked structure 20b can be oxide, nitride or oxynitride.

[0064] It should be noted that Figure 4 The numbers of the first stacked structure 20 a and the second stacked structure 20 b are only for illustration and do not limit the specific structure of the antireflection film 20 .

[0065] The refractive index of the high refractive index layer of the first stacked structure 20a is 2.1-3.5. The material of the high refractive index layer of the first stacked structure 20a can be selected from at least one of the oxides of metals such as Nb, La, Ta, Ti, Mo, Hf, and Zr; that is, the material of the high refractive index layer of the first stacked structure 20a is M m O n , where M is a metal element such as Nb, La, Ta, Ti, Mo, Hf, Zr, etc., O is an oxygen element, and m is each M m O n The number of atoms corresponding to the metal element in the molecule, n is the number of O atoms. The valence of the metal element is p, and the valence of the oxygen element is 2.

[0066] In the present application, the high refractive index layer of the first stacked structure 20a is a partially oxidized metal oxide before heat treatment. That is, n < p*m / 2. More specifically, n ≤ p*m*0.35, that is, n ≤ 70%*p*m* / 2, that is, the oxidation degree of the material of the high refractive index layer of the first stacked structure is less than or equal to 70%. In a possible embodiment, the material of the high refractive index layer of the first stacked structure 20a is Nb m O nWherein, m=2, n≤3.5. In another possible implementation, the material of the high refractive index layer of the first stacked structure 20a is Ti m O n . Wherein, m=1, n≤1.4.

[0067] The refractive index of the low refractive index layer of the first stacked structure 20a is 1.4-1.9, and the material of the low refractive index layer can be selected from at least one of nitrides, oxides, and oxynitrides such as Si, Al, and SiAl. Exemplarily, the material of the low refractive index layer of the first stacked structure 20a is SiO x MgF x 、AlO x , WO x , YF x , BaF x At least one of .

[0068] The refractive index of the high refractive index layer of the second stacked structure 20b is 2.1-3.5. The material of the high refractive index layer of the second stacked structure 20b can be selected from at least one of the oxides, nitrides, and oxynitrides of metals such as Nb, La, Ta, Ti, Mo, Hf, and Zr and their alloys. When the material of the high refractive index layer of the second stacked structure 20b is an oxide, the material of the high refractive index layer of the second stacked structure 20b can be in a partially oxidized state or in a fully oxidized state. Exemplarily, the material of the high refractive index layer of the second stacked structure 20b is NbO x 、SiN x 、ZrO x 、TiO x 、TiN x 、MoO x 、TaO x , HfO x The high refractive index layer of the second stacked structure 20b may also be Si.

[0069] The refractive index of the low refractive index layer of the second stacked structure 20b is 1.4-1.9, and the material of the low refractive index layer can be selected from at least one of nitrides, oxides, and oxynitrides such as Si, Al, and SiAl. x MgF x 、AlO x , WO x , YF x , BaF x At least one of .

[0070] The sum of the number of the first laminated structures 20a and the second laminated structures 20b is equal to the number of all the laminated structures of the antireflection film 20. The number of the first laminated structures 20a is 1-3. Along the thickness direction of the window glass 100, all the first laminated structures 20a are closer to the inner glass plate 13 than all the second laminated structures 20b. In a possible embodiment, the number of the first laminated structure 20a is 1. The first laminated structure 20a is closest to the inner glass plate 13. All the second laminated structures 20b are located on the side of the first laminated structure 20a facing away from the inner glass plate 13. For example, Figure 4 , the number of the first laminated structures 20a is 1. The number of the second laminated structures 20b is 4. In another possible implementation manner, the number of the first laminated structures 20a is 2. One of the first laminated structures 20a is closest to the inner glass plate 13, and another first laminated structure 20a is the second closest to the inner glass plate 13. All the second laminated structures 20b are located on the side of the two first laminated structures 20a that is away from the inner glass plate 13. In another possible implementation manner, the number of the first laminated structures 20a is 3. One of the first laminated structures 20a is closest to the inner glass plate 13, another first laminated structure 20a is the second closest to the inner glass plate 13, and another first laminated structure 20a is the third closest to the inner glass plate 13. All the second laminated structures 20b are located on the side of the three first laminated structures 20a that is away from the inner glass plate 13.

[0071] In the present application, the window glass 100 is heat treated. The temperature range of the heat treatment process is: 550°C-650°C. After the heat treatment, the material of the high refractive index layer of the first stacked structure 20a of the antireflection film 20 is changed from a partially oxidized state to a fully oxidized state. In the present application, the high refractive index layer of the first stacked structure 20a is a metal oxide in a fully oxidized state after the heat treatment. When the metal element is in a fully oxidized state, n=p*m / 2. For example, the oxide formed after the Nb element is fully oxidized is Nb m O n , m = 2, n = 5; or the oxide formed after the Ti element is completely oxidized is Ti m O n , m=1, n=2.

[0072] In the present application, after the window glass 100 is heat-treated, the thickness of the high refractive index layer of the first laminated structure 20a of the antireflection film 20 increases by at least 10%. Preferably, after the window glass 100 is heat-treated, the thickness of the high refractive index layer of the first laminated structure 20a of the antireflection film 20 increases by at least 15%. After the heat treatment, the area covered by the antireflection film 20 in the window glass 100 has a transmittance of at least 1% to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° compared with that before the heat treatment, that is, after the window glass 100 is heat-treated, the transmittance of the information collection area S1 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° increases by at least 1%. Preferably, the transmittance of the information collection area S1 to the light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° increases by at least 1.5%. More preferably, the transmittance of the information collection area S1 to light within a wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is increased by at least 2%.

[0073] After the window glass 100 is heat treated, the a value of the visible light reflection color of the information collection area S1 measured from one side of the first surface 111 of the laminated glass 10 is less than or equal to -2, and the b value is less than 0, where a is the red-green chromaticity value and b is the yellow-blue chromaticity value.

[0074] It is understandable that by providing the anti-reflection film 20 in the information collection area S1 of the vehicle window glass 100, the transmittance of the information collection area S1 of the vehicle window glass 100 to the light within the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° can be improved. By heat treating the vehicle window glass 100, the transmittance of the information collection area S1 of the vehicle window glass 100 to the light within the wavelength range of 900nm-1000nm can be further improved, which is conducive to the laser radar or infrared camera with a wavelength of 905nm to obtain high-precision detection results.

[0075] In addition, after the anti-reflection film 20 is subjected to a high temperature heat treatment of 550°C-650°C, the infrared light transmittance of the information collection area S1 of the vehicle window glass 100 can be improved, that is, the anti-reflection film 20 has good thermal stability. Since the processing technology of the vehicle window glass 100 is usually carried out after the coating process on the surface of the laminated glass 10, the anti-reflection film 20 can adapt to the processing technology of the vehicle window glass 100 (processing temperature range is 550°C-650°C), such as bending, pressing or tempering treatment. In this way, after the vehicle window glass 100 is processed, the optical performance of the information collection area S1 of the vehicle window glass 100 will not only not degrade, but will be improved, which is conducive to improving the transmittance of the information collection area S1 of the vehicle window glass 100 to infrared light. In particular, when the vehicle window glass 100 is a windshield, after the vehicle window glass 100 is subjected to heat treatment processes such as bending and pressing, the transmittance of the information collection area S1 of the vehicle window glass 100 to infrared light remains at a high transmittance.

[0076] The anti-reflection film 20 provided in the embodiment of the present application is laminated on the surface of the laminated glass 10 without destroying the structural integrity of the laminated glass 10 , and thus, the safety performance of the vehicle 1000 can be ensured.

[0077] The following is a specific description of a vehicle window glass 100 including an anti-reflection film 20 with different structures.

[0078] Embodiment 1:

[0079] The outer glass plate 11 is a transparent glass with a thickness of 2.1 mm and a refractive index of 1.5, and the inner glass plate 13 is a transparent glass with a thickness of 2.1 mm and a refractive index of 1.50. The middle layer is a PVB with a thickness of 0.76 mm. The anti-reflection film 20 is laminated on the fourth surface 132 of the inner glass plate 13.

[0080] Please refer to Figure 5 As shown in Table 1, the antireflection film 20 includes 7 stacked structures. The number of film layers of the antireflection film 20 is 14. Among them, the number of the first stacked structure 20a is three. The material of the high refractive index layer of the first stacked structure 20a is M m O n , where M is Nb element, m=2, n=3.4, that is, the material of the high refractive index layer of the first stacked structure 20a is partially oxidized. m O nThe refractive index of the first stacked structure 20a is 2.25. The material of the low refractive index layer of the first stacked structure 20a is SiO2. The refractive index of SiO2 is 1.5. The material of the high refractive index layer of the second stacked structure 20b is Nb2O5, that is, the material of the high refractive index layer of the second stacked structure 20b is completely oxidized. The refractive index of Nb2O5 is 2.3. The material of the low refractive index layer of the second stacked structure 20b is SiO2. The refractive index of SiO2 is 1.47.

[0081] Specifically, starting from the fourth surface 132 of the inner glass plate 13, along the thickness direction of the anti-reflection film 20, the stacking order of the multiple stacking structures is 1, 2, 3, 4, 5, 6, and 7. The first stacking structure includes a high refractive index layer H1 and a low refractive index layer L1; the second stacking structure includes a high refractive index layer H2 and a low refractive index layer L2; the third stacking structure includes a high refractive index layer H3 and a low refractive index layer L3. The first stacking structure, the second stacking structure, and the third stacking structure are all first stacking structures 20a. The fourth stacking structure includes a high refractive index layer H4 and a low refractive index layer L4; the fifth stacking structure includes a high refractive index layer H5 and a low refractive index layer L5; the sixth stacking structure includes a high refractive index layer H6 and a low refractive index layer L6; the seventh stacking structure includes a high refractive index layer H7 and a low refractive index layer L7. The fourth stacking structure, the fifth stacking structure, the sixth stacking structure, and the seventh stacking structure are all second stacking structures 20b.

[0082] The laminated glass 10 coated with the anti-reflection film 20 is heat-treated to obtain the bent window glass 100. Specifically, the heat-treatment condition is 630° C. The film layer structural parameters of the anti-reflection film 20 after the heat treatment are also recorded in Table 1.

[0083] The optical properties of the information collection area S1 of the vehicle window glass 100 before and after heat treatment were measured using a spectrophotometer (company: PERKINELMER, model: LAMBDA950). The color value of the information collection area S1 of the vehicle window glass 100 was tested using a colorimeter (company: HUNTERLAB, model: ULTRASCAN PRO).

[0084] Table 1 Structural parameters of the antireflection film 20 in Example 1

[0085]

[0086]

[0087] It can be seen from Table 1 that before the window glass 100 is heat-treated, the material of the high refractive index layer of all the first stacked structures 20a of the anti-reflection film 20 is in a partially oxidized state. The high refractive index layer of the second stacked structure 20b of the anti-reflection film 20 is in a completely oxidized state. According to the test results, the transmittance of the information collection area S1 of the window glass 100 to the light within the wavelength range of 905nm incident at an incident angle of 65° is 78.5%. From the side of the first surface 111 of the window glass 100, the a value of the visible light reflection color of the information collection area S1 is -3.5, and the b value is -1.2, where a is the red-green chromaticity value, and b is the yellow-blue chromaticity value.

[0088] After the window glass 100 is heat-treated, the material of the high refractive index layer of the first laminated structure 20a of the anti-reflection film 20 is in a completely oxidized state. From the fourth surface 132 of the inner glass plate 13, along the thickness direction of the anti-reflection film 20, the thickness of the high refractive index layer of the first first laminated structure 20a increases by 20%; the thickness of the high refractive index layer of the second first laminated structure 20a increases by 15.6%; the thickness of the high refractive index layer of the third first laminated structure 20a increases by 28%. The high refractive index layer of the second laminated structure 20b of the anti-reflection film 20 is in a completely oxidized state, and the thickness of the high refractive index layer of the second laminated structure 20b of the anti-reflection film 20 remains unchanged. The transmittance of the information collection area S1 of the window glass 100 to light within a wavelength range of 905nm incident at an incident angle of 65° is 80.1%. From the side of the first surface 111 of the vehicle window glass 100, the a value of the visible light reflection color of the information collection area S1 is -3.3, and the b value is -1.8, where L is the brightness value, a is the red-green chromaticity value, and b is the yellow-blue chromaticity value. It can be seen that after the vehicle window glass 100 is heat-treated, the transmittance of the information collection area S1 to the light within the wavelength range of 905nm incident at an incident angle of 65° increases by 1.6% compared with before the heat treatment.

[0089] Embodiment 2:

[0090] The outer glass plate 11 is a transparent glass with a thickness of 3.2 mm and a refractive index of 1.6, and the inner glass plate 13 is a transparent glass with a thickness of 1.1 mm and a refractive index of 1.52. The middle layer is a PVB with a thickness of 0.76 mm. The anti-reflection film 20 is laminated on the fourth surface 132 of the inner glass plate 13.

[0091] Please refer to Figure 6 As shown in Table 2, the antireflection film 20 includes 4 stacked structures. The number of film layers of the antireflection film 20 is 8. Among them, the number of the first stacked structure 20a is three. The material of the high refractive index layer of the first stacked structure 20a is M m O n , where M is Nb element, m=2, n=3.3, that is, the material of the high refractive index layer of the first stacked structure 20a is partially oxidized.m O n The refractive index of the first stacked structure 20a is 2.18. The material of the low refractive index layer of the first stacked structure 20a is SiO2. The refractive index of SiO2 is 1.5. The material of the high refractive index layer of the second stacked structure 20b is Nb2O5, that is, the material of the high refractive index layer of the second stacked structure 20b is completely oxidized. The refractive index of Nb2O5 is 2.3. The material of the low refractive index layer of the second stacked structure 20b is SiO2. The refractive index of SiO2 is 1.47.

[0092] Specifically, starting from the fourth surface 132 of the inner glass plate 13, along the thickness direction of the anti-reflection film 20, the stacking order of the multiple stacking structures is 1, 2, 3, and 4. The first stacking structure includes a high refractive index layer H1 and a low refractive index layer L1; the second stacking structure includes a high refractive index layer H2 and a low refractive index layer L2; the third stacking structure includes a high refractive index layer H3 and a low refractive index layer L3. The first stacking structure, the second stacking structure, and the third stacking structure are all first stacking structures 20a. The fourth stacking structure includes a high refractive index layer H4 and a low refractive index layer L4. The fourth stacking structure is a second stacking structure 20b.

[0093] The window glass 100 is heat-treated to obtain the heat-treated window glass 100. Specifically, the heat-treatment equipment is the same as that described in Example 1. The heat-treatment condition is 640° C. The film layer structural parameters of the antireflection film 20 after the heat treatment are also recorded in Table 2.

[0094] The optical properties of the information collection area S1 of the vehicle window glass 100 before and after heat treatment were measured using a spectrophotometer (company: PERKINELMER, model: LAMBDA950). The color value of the information collection area S1 of the vehicle window glass 100 was tested using a colorimeter (company: HUNTERLAB, model: ULTRASCAN PRO).

[0095] Table 2 Structural parameters of the antireflection film 20 in Example 2

[0096]

[0097] It can be seen from Table 2 that before the window glass 100 is heat-treated, the material of the high refractive index layer of all the first stacked structures 20a of the anti-reflection film 20 is in a partially oxidized state. The material of the high refractive index layer of the second stacked structure 20b of the anti-reflection film 20 is in a completely oxidized state. According to the test results, the transmittance of the information collection area S1 of the window glass 100 to the light within the wavelength range of 905nm incident at an incident angle of 65° is 77.5%. From the side of the first surface 111 of the window glass 100, the a value of the visible light reflection color of the information collection area S1 is -4.9, and the b value is -2.3, where a is the red-green chromaticity value, and b is the yellow-blue chromaticity value.

[0098] After the window glass 100 is heat-treated, the material of the high refractive index layer of the first laminated structure 20a of the anti-reflection film 20 is in a completely oxidized state. From the fourth surface 132 of the inner glass plate 13, along the thickness direction of the anti-reflection film 20, the thickness of the high refractive index layer of the first first laminated structure 20a increases by 17.1%; the thickness of the high refractive index layer of the second first laminated structure 20a increases by 13.1%; the thickness of the high refractive index layer of the third first laminated structure 20a increases by 18.2%. The high refractive index layer of the second laminated structure 20b of the anti-reflection film 20 is in a completely oxidized state, and the thickness of the high refractive index layer of the second laminated structure 20b of the anti-reflection film 20 remains unchanged. The transmittance of the information collection area S1 of the window glass 100 to light within a wavelength range of 905nm incident at an incident angle of 65° is 79.2%. From the side of the first surface 111 of the vehicle window glass 100, the a value of the visible light reflection color of the information collection area S1 is -5.2, and the b value is -2.6, where a is the red-green chromaticity value, and b is the yellow-blue chromaticity value. It can be seen that after the vehicle window glass 100 is heat-treated, the transmittance of the information collection area S1 to the light within the wavelength range of 905nm incident at an incident angle of 65° increases by 1.7% compared with before the heat treatment.

[0099] See also Figure 7The vehicle window glass 100 of this embodiment further includes a heat-insulating film 40, which is arranged on the third surface 131 of the inner glass plate 13 and / or the second surface 112 of the outer glass plate 11 to avoid the information collection area S1 of the vehicle window glass 100, that is, a heat-insulating film 40 is sandwiched between the outer glass plate 11 and the inner glass plate 13. Specifically, the heat-insulating film 40 is arranged at a position corresponding to the field of view S21 on the laminated glass 10. Along the thickness direction of the laminated glass 10, the orthographic projection of the heat-insulating film 40 on the laminated glass 10 completely overlaps with the field of view S21 (the width and length of the heat-insulating film 40 are equal to the width and length of the field of view S21). The heat-insulating film 40 can reflect light to achieve a heat-insulating and sun-proof effect in the field of view S21. The heat-insulating film 40 avoids the information collection area S1 on the laminated glass 10. In other embodiments, along the thickness direction of the laminated glass 10, the orthographic projection of the thermal insulation film 40 on the laminated glass 10 may also partially overlap with the viewing area S21 (the width and length of the thermal insulation film 40 are smaller than the width and length of the viewing area S21).

[0100] In this embodiment, the thermal insulation film 40 is a functional metal layer, and the functional metal layer includes a metal layer and two dielectric layers, and the metal layer is located between the two dielectric layers. The material of the metal layer is Ag, and the material of the dielectric layer is ZnSnOx. In some other embodiments, the functional metal layer may also include multiple metal layers, each of which is located between two adjacent dielectric layers. In this application, "multiple" refers to two or more. On the one hand, the dielectric layer has the function of protecting the metal layer to prevent the metal layer from being oxidized, and on the other hand, it can also adjust the optical properties, mechanical properties and reflection color of the thermal insulation film 40. The material of the metal layer can be a metal or metal alloy selected from at least one element of Ag, Au, Cu, Al, and Pt, and the material of the dielectric layer can be selected from at least one of nitrides, oxides, and oxynitrides of metals and their alloys such as Zn, Sn, Ti, Si, Al, Ni, Cr, Nb, Mg, Zr, Ga, Y, In, Sb, V, Ta, etc.

[0101] In order to ensure that the viewing area S21 has a high transmittance, it is sufficient to set a thermal insulation film 40 on either the second surface 112 of the outer glass plate 11 or the third surface 131 of the inner glass plate 13. In other embodiments, the thermal insulation film 40 may also be a transparent conductive oxide coating or a light absorbing layer, and the present application does not impose strict restrictions on the material of the thermal insulation film 40.

[0102] The laminated glass 10 is also provided with a shielding layer 50, which is laminated on the periphery of the second surface 112 of the outer glass plate 11 or the fourth surface 132 of the inner glass plate 13. Specifically, the shielding layer 50 is provided at a position on the laminated glass 10 corresponding to the shielding area S22. Along the thickness direction of the laminated glass 10, the orthographic projection of the shielding layer 50 on the laminated glass 10 completely overlaps with the shielding area S22 (the width and length dimensions of the shielding layer 50 are equal to the width and length dimensions of the shielding area S22). The shielding layer 50 avoids the information collection area S1 on the laminated glass 10. The material of the shielding layer 50 is usually ink, which is used to shield and protect the parts inside the vehicle 1000. The shielding layer 50 can play a role in preventing ultraviolet rays, preventing the internal parts of the vehicle 1000 from being damaged by aging caused by direct sunlight, so as to increase the service life of the internal parts of the vehicle 1000. At the same time, the shielding layer 50 can also shield the internal parts of the vehicle 1000 to ensure the overall beauty of external observation. In other embodiments, along the thickness direction of the laminated glass 10, the orthographic projection of the shielding layer 50 on the laminated glass 10 can also partially overlap with the shielding area S22 (the width and length of the shielding layer 50 are both smaller than the width and length of the shielding area S22).

[0103] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A vehicle window glass, characterized in that: The laminated glass comprises an outer glass plate, an intermediate layer and an inner glass plate, wherein the intermediate layer is sandwiched between the outer glass plate and the inner glass plate, the outer glass plate comprises a first surface and a second surface disposed opposite to the first surface, the second surface faces the intermediate layer, the inner glass plate comprises a third surface and a fourth surface disposed opposite to the third surface, the third surface faces the intermediate layer; An anti-reflection film is provided on the fourth surface of the inner glass plate. Along the thickness direction of the laminated glass, the anti-reflection film at least completely covers the information collection area. The anti-reflection film includes a plurality of laminated structures. Along the thickness direction of the window glass, the plurality of laminated structures are sequentially laminated. From the fourth surface of the inner glass plate to the direction away from the outer glass plate, each of the laminated structures includes a high refractive index layer and a low refractive index layer laminated sequentially. After the heat treatment, the transmittance of the area covered by the antireflection film in the vehicle window glass to light with a wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is increased by at least 1% compared with that before the heat treatment.

2. The vehicle window glass according to claim 1, characterized in that: The plurality of laminated structures are divided into a first laminated structure and a second laminated structure, and along the thickness direction of the laminated glass, all the first laminated structures are closer to the inner glass plate than all the second laminated structures; The high refractive index layer of the first stacked structure is a partially oxidized metal oxide before the heat treatment, and the high refractive index layer of the first stacked structure is a fully oxidized metal oxide after the heat treatment.

3. The vehicle window glass according to claim 2, characterized in that: The material of the high refractive index layer of the first stacked structure is metal oxide M m O n , where M is a metal element, O is an oxygen element, and m is the m O n The number of atoms corresponding to the metal element in the molecule, n is the number of O atoms, the valence of the metal element is p, and before the heat treatment, the range of n is: n<p*m / 2.

4. The vehicle window glass according to claim 3, characterized in that: Before the heat treatment, the range of n is: n≤p*m*0.

35.

5. The vehicle window glass according to claim 3, characterized in that: The metal element is at least one of Nb, La, Ta, Ti, Mo, Hf, and Zr.

6. The vehicle window glass according to claim 2, characterized in that: The number of the first stacked structures is 1-3.

7. The vehicle window glass according to claim 2, characterized in that: After the heat treatment, the thickness of the high refractive index layer of each of the first stacked structures increases by at least 10% compared with that before the heat treatment.

8. The vehicle window glass according to claim 2, characterized in that: The material of the high refractive index layer of the second stacked structure is Si, NbO x 、SiN x 、ZrO x 、TiO x 、TiN x 、MoO x 、TaO x , HfO x At least one of .

9. The vehicle window glass according to claim 2, characterized in that: The material of the low refractive index layer of the first stacked structure is SiO x MgF x 、AlO x , WO x , YF x , BaF x At least one of the following, the material of the low refractive index layer of the second stacked structure is SiO x MgF x 、AlO x , WO x , YF x , BaF x At least one of .

10. The vehicle window glass according to claim 1, characterized in that: The refractive index of the high refractive index layer is 2.1-3.5, and the refractive index of the low refractive index layer is 1.4-1.

9.

11. The vehicle window glass according to claim 10, 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.

12. The vehicle window glass according to claim 1, characterized in that: The number of the stacked structures is 4-10.

13. The vehicle window glass according to claim 1, characterized in that: The total thickness of the antireflection film is 300nm-1500nm.

14. The vehicle window glass according to claim 1, characterized in that: Before the heat treatment, the transmittance of the information collection area to light in the wavelength range of 900nm-1000nm incident at an incident angle of 62°-68° is ≥76%.

15. The vehicle window glass according to claim 1, characterized in that: Before the heat treatment, the transmittance of the information collection area provided with the anti-reflection film to the light in the wavelength range of 900nm-1000nm with an incident angle of 62°-68° is increased by at least 4% compared with the transmittance of the information collection area not provided with the anti-reflection film to the light in the wavelength range of 900nm-1000nm with an incident angle of 62°-68°.

16. The vehicle window glass according to claim 1, characterized in that: At least one of the outer glass sheet and the inner glass sheet has a transmittance of at least 91% in the wavelength range of 900 nm to 1000 nm.

17. The vehicle window glass according to claim 1, characterized in that: The temperature range of the heat treatment is 550°C-650°C.

18. The vehicle window glass according to claim 1, characterized in that: After the heat treatment, measured from one side of the first surface, the a value of the visible light reflection color of the information collection area is less than or equal to -2, and the b value is less than 0, where a is the red-green chromaticity value and b is the yellow-blue chromaticity value.

19. A vehicle, characterized in that: The invention comprises a vehicle body and the vehicle window glass according to any one of claims 1 to 18, wherein the vehicle window glass is connected to the vehicle body.

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