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 information collection area, wherein an anti-reflection film is disposed on a fourth surface of the laminated glass, in the thickness direction of the laminated glass, the anti-reflection film at least completely covers the information collection area, the anti-reflection film comprises a plurality of laminated structures, and from the fourth surface of an inner glass plate in a direction away from an outer glass plate, each laminated structure comprises a high-refractive-index layer and a low-refractive-index layer, which are stacked in sequence; and after heat treatment, for light within a wavelength range of 900-1000 nm that is incident at an incident angle within 62°-68°, the transmittance of the area in the vehicle window glass that is covered by the anti-reflection film is increased by at least 1% compared with that before the heat treatment. The present application not only meets the transmittance requirements of vehicle window glass for light having wavelengths within 900-1000 nm, but also makes anti-reflection films adapt to the production process of windshields.

Description

Vehicle window glass and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202411272492.X filed on September 11, 2024, and entitled "Vehicle window glass and vehicle", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of glass products, in particular to vehicle window glass and vehicle. BACKGROUND

[0003] Generally, sensors such as visible light cameras, millimeter wave radars, laser radars, ultrasonic radars, etc. are mounted near the top of the front windshield glass in the car, which shoot and process the driving environment outside the car into image data to assist in realizing automatic driving. At present, the mainstream choices of sensors include laser radars and infrared cameras, especially those capable of emitting and receiving laser with a wavelength of 905nm. Therefore, the transmittance of the vehicle window glass to light with a wavelength of 905nm is crucial. However, the current vehicle window glass, especially the vehicle window glass at the installation angle, will hinder the transmission of infrared light to some extent, so that the transmittance of infrared light cannot meet the demand of high-precision detection for automatic driving.

[0004] Patent CN101678651A discloses a colored laminated vehicle window glass, which has a transmittance of at least 30% to light with a wavelength in the range of 400nm-2100nm, and a transmittance of at least 32% to light with a wavelength in the range of 750nm-1300nm. However, the transmittance of this laminated glass still cannot meet the use requirements of 905nm wavelength laser radars or infrared cameras. Patent CN101037099A discloses a device and method for installing an infrared camera with an outward viewing angle inside the vehicle, which sets an infrared transmission insert in the through hole of the windshield glass, and makes the light emitted / received by the infrared camera pass through the infrared transmission insert to reduce the loss of light. However, this scheme damages the integrity of the windshield glass, which will reduce the safety performance of the vehicle. In addition, this scheme also has the problem of complex production process.

[0005] In comparison, the antireflection film is arranged on the surface of the automotive glass close to the interior of the vehicle, and through professional film system structure design, the automotive glass can have corresponding antireflection effect on light of specific wavelength at specific installation angle. In the preparation process of the automotive front windshield, the glass needs to be heat treated (including baking, pressing or tempering forming, etc.), and the heat treatment process is usually carried out after the glass surface film coating process. The temperature of baking or pressing is usually between 550-650 DEG C. However, at the heat treatment temperature, the antireflection film will have uncertain risks such as softening deformation, thickness change, film layer material change, thereby affecting the antireflection effect of the antireflection film or even making the antireflection effect invalid. Therefore, in view of this problem, the film system structure of the antireflection film and the transformation of the film layer material properties at high temperature are studied, and a special antireflection film is designed to adapt to the production process of the front windshield. SUMMARY

[0006] The purpose of the present application is to provide a kind of vehicle and vehicle window glass, after heat treatment, the transmission effect of antireflection film on light in the wavelength range of 900nm-1000nm can be improved, not only meet the transmittance requirement of vehicle window glass on light with wavelength of 900nm-1000nm, but also make the antireflection film can adapt to the production process of front windshield, especially after heat treatment process such as baking, pressing, etc. on vehicle window glass, the transmittance of information collection area of vehicle window glass on light in the wavelength range of 900nm-1000nm remains high transmittance.

[0007] The first aspect of the present application provides a kind of vehicle window glass, including laminated glass and information collection area, the laminated glass includes outer glass plate, intermediate layer and inner glass plate, the intermediate layer is arranged between the outer glass plate and the inner glass plate, the outer glass plate includes first surface and the second surface away from the first surface, the second surface is towards the intermediate layer, the inner glass plate includes third surface and the fourth surface away from the third surface, the third surface is towards the intermediate layer;

[0008] Antireflection film is provided on the fourth surface of the inner glass plate, along the thickness direction of the laminated glass, the antireflection film at least completely covers the information collection area of the vehicle window glass, the antireflection film includes a plurality of stacked structures, along the thickness direction of the vehicle window glass, a plurality of stacked structures are sequentially stacked, from the fourth surface of the inner glass plate to the direction away from the outer glass plate, each stacked structure includes high refractive index layer and low refractive index layer which are sequentially stacked;

[0009] After heat treatment, the transmittance of the area covered by the antireflection film in the vehicle window glass on light in the wavelength range of 900nm-1000nm with 62-68 incident angle is improved by at least 1% compared with before heat treatment.

[0010] It can be understood that by arranging the 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 in the wavelength range of 900nm-1000nm at an incident angle of 62°-68° can be improved. The anti-reflection film is arranged on the surface of the laminated glass without damaging the structural integrity of the laminated glass, and thus the safety performance of the vehicle can be ensured.

[0011] In a possible implementation, the plurality of the stack structures are divided into first stack structures and second stack structures, and all the first stack structures are closer to the inner glass sheet than all the second stack structures along the thickness direction of the laminated glass.

[0012] The high-refractive-index layer of the first stack structure is a metal oxide in a partially oxidized state before the heat treatment, and the high-refractive-index layer of the first stack structure is a metal oxide in a fully oxidized state after the heat treatment.

[0013] In a possible implementation, the material of the high-refractive-index layer of the first stack structure is a metal oxide M m O n , where M is a metal element, O is an oxygen element, m is the number of atoms corresponding to the metal element in each M m O n , n is the number of O atoms, and the valence of the metal element is p. Before the heat treatment, the range of n is n

[0014] In a possible implementation, before the heat treatment, the range of n is n

[0015] In a possible implementation, the metal element is at least one of Nb, La, Ta, Ti, Mo, Hf, and Zr.

[0016] In a possible implementation, the number of the first stack structures is 1-3.

[0017] In a possible implementation, after the heat treatment, the thickness of the high-refractive-index layer of each first stack structure is increased by at least 10% compared with that before the heat treatment.

[0018] In a possible implementation, the material of the high-refractive-index layer of the second stack structure is Si, NbO x , SiN x , ZrO x , TiO x , TiN x , MoO x , TaO x , HfO xat least one of SiO2, MgF2, AlO, WO, YF, BaF.

[0019] In a possible implementation, the material of the low-refractive-index layer of the first stack structure is at least one of SiO2, MgF2, AlO, WO, YF, BaF. x , MgF x , AlO x , WO x , YF x , BaF x The material of the low-refractive-index layer of the second stack structure is at least one of SiO2, MgF2, AlO, WO, YF, BaF. x , MgF x , AlO x , WO x , YF x , BaF x .

[0020] In a possible implementation, 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.

[0021] In a possible implementation, the difference between the refractive index of the high-refractive-index layer and the refractive index of the low-refractive-index layer is greater than 0.3.

[0022] In a possible implementation, the number of the stack structures is 4-10.

[0023] In a possible implementation, the total thickness of the anti-reflection film is 300nm-1500nm.

[0024] In a possible implementation, 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 at an incident angle of 62°-68° is ≥76%.

[0025] In a possible implementation, the transmittance of the information collection area provided with the anti-reflection film to light in the wavelength range of 900nm-1000nm at 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 light in the wavelength range of 900nm-1000nm at an incident angle of 62°-68°.

[0026] In a possible implementation, at least one of the outer glass plate and the inner glass plate has a transmittance of at least 91% in the wavelength range of 900-1000nm.

[0027] In a possible implementation, the temperature range of the heat treatment is 550℃-650℃.

[0028] In a possible implementation, after the heat treatment, the visible light reflection color of the information acquisition area has an a value less than or equal to -2 and a b value less than 0, where a is a red-green color hue value and b is a yellow-blue color hue value, as measured from the side of the first surface.

[0029] In a possible implementation, the vehicle window glass further comprises a heat insulation film arranged on the second surface of the outer glass sheet and / or the third surface of the inner glass sheet, away from the information acquisition area of the vehicle window glass.

[0030] The second aspect of the present application provides a vehicle comprising a vehicle body and a vehicle window glass as described above, which is connected to the vehicle body.

[0031] The present application has the beneficial effect that by arranging the anti-reflection film on the information acquisition area of the vehicle window glass, the transmittance of the information acquisition area of the vehicle window glass to light in the wavelength range of 900 nm-1000 nm at an incident angle of 62°-68° can be improved. By heat treatment, the light transmittance of the information acquisition area of the vehicle window glass can be further improved, which is beneficial to the high-precision detection result of the laser radar or infrared camera at a wavelength of 905 nm.

[0032] In addition, the anti-reflection film can improve the light transmittance of the information acquisition area of the vehicle window glass after high-temperature heat treatment at 550°C-650°C, that is, the anti-reflection film has good thermal stability. Since the processing process of the vehicle window glass is usually performed after the film coating process on the surface of the laminated glass, the anti-reflection film can adapt to the processing process (processing temperature range of 550°C-650°C) of the vehicle window glass, such as baking, pressing or tempering treatment, etc. In this way, after the heat processing of the vehicle window glass, the optical performance of the information acquisition area of the vehicle window glass not only does not degrade, but rather improves, which is beneficial to improving the transmittance of the information acquisition area of the vehicle window glass to light in the wavelength range of 900 nm-1000 nm. Especially when the vehicle window glass is a front windshield, after the vehicle window glass is processed by baking, pressing or other processes, the transmittance of the information acquisition area of the vehicle window glass to light in the wavelength range of 900 nm-1000 nm remains high.

[0033] In addition, the anti-reflection film is laminated on the fourth surface of the laminated glass and can cover the information acquisition area of the vehicle window glass, without damaging the structural integrity of the laminated glass, thus ensuring the safety performance of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0034] FIG. 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0035] FIG. 2 is a schematic diagram of the cross-sectional structure of the vehicle window glass of the vehicle shown in FIG. 1 along the thickness direction;

[0036] Fig. 3 is a schematic view of the vehicle window glass shown in Fig. 2 in a plane perpendicular to the thickness direction, including two embodiments (a) and (b);

[0037] Fig. 4 is a schematic view of the antireflection film of the vehicle window glass shown in Fig. 2;

[0038] Fig. 5 is a schematic view of the antireflection film in Embodiment 1 of the present application;

[0039] Fig. 6 is a schematic view of the antireflection film in Embodiment 2 of the present application;

[0040] Fig. 7 is a schematic view of the cross-sectional structure of the vehicle window glass shown in Fig. 2 including a heat-insulating film and a shielding layer.

[0041] Reference Signs: 1000-vehicle, 100-vehicle window glass, 200-vehicle body, 10-laminated glass, 20-antireflection film, 11-outer glass sheet, 12-intermediate layer, 13-inner glass sheet, 111-first surface, 112-second surface, 131-third surface, 132-fourth surface, S1-information collection area, S11-side edge, S2-non-information collection area, S21-viewing area, S22-shielding area, S221-outer side edge, S222-inner side edge, 20a-first stacked structure, 20b-second stacked structure, 40-heat-insulating film, 50-shielding layer. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to 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 of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] The present application provides a vehicle window glass 100 capable of improving the transmittance of the vehicle window glass 100 to light of a wavelength of 905 nm. Application of the vehicle window glass 100 of the present application to a vehicle 1000 can ensure the safety performance of the vehicle 1000.

[0044] Referring to Fig. 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 can be, but is not limited to, a front windshield, a side window glass, a rear windshield, a sunroof glass, and the like of the vehicle 1000. The embodiments of the present application only take the vehicle window glass 100 as a front windshield for illustration.

[0045] Referring to FIG. 2, the vehicle window glass 100 comprises a laminated glass 10 and a signal collection area S1. The signal 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 transmitted and / or received by the sensor will all transmit through the signal collection area S1 of the vehicle window glass 100. The laminated glass 10 comprises an outer glass sheet 11, an interlayer 12 and an inner glass sheet 13, and the interlayer 12 is laminated between the outer glass sheet 11 and the inner glass sheet 13. The outer glass sheet 11 comprises a first surface 111 and a second surface 112 arranged oppositely, 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 interlayer 12. The inner glass sheet 13 comprises a third surface 131 and a fourth surface 132 arranged oppositely, the third surface 131 faces the interlayer 12, and the fourth surface 132 faces the inside of the vehicle 1000 and belongs to the inner surface of the vehicle window glass 100. The interlayer 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 sheet 13, and the anti-reflection film 20 at least completely covers the signal 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 the laminated glass 10 can also be 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 shape of the laminated glass 10 is not strictly limited in the present application.

[0047] At least one of the outer glass sheet 11 and the inner glass sheet 13 has a transmittance of at least 91% in the wavelength range of 900-1000 nm, and an ultra-white float glass can be selected. In one embodiment, both the outer glass sheet 11 and the inner glass sheet 13 are ultra-white float glasses, and the use of ultra-white float glass is beneficial to improve the transmittance of the vehicle window glass 100 to the 905 nm wavelength light emitted and received by the sensor. The thickness of the outer glass sheet 11 is w1, and the thickness of the inner glass sheet 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 w2. In another possible implementation, w1 is greater than or equal to 2.5 times 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 higher durability and impact resistance against 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, and the inner glass plate 13 can be tempered to increase the strength so as to reduce the absorption of light and meet the light weight requirement on the basis of sufficient strength, thereby reducing the total thickness of the inner glass plate 13 and the outer glass plate 11.

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

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

[0051] Referring to FIG. 3(a) and (b), in the present application, the vehicle window glass 100 further 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 are not overlapped, and the non-information collection area S2 surrounds the information collection area S1. The non-information collection area S2 includes a field of view area S21 and a shielding area S22, the field of view area S21 is a transparent area for indoor and outdoor light transmission, i.e., a main viewing area of the vehicle window. The shielding area S22 is used to prevent visible light from transmitting through the laminated glass 10. In other embodiments, the field of view area S21 can also be partially used for head-up display (HUD), i.e., as a HUD field of view area to display information such as driving speed, dynamic navigation, commercial district information, etc., and the shielding area S22 can also be used only for aesthetics. The present application does not strictly limit the use of the non-information collection area S2.

[0052] In the embodiments of the present application, the information collection area S1, the field of view area S21 and the shielding area S22 do not overlap. In one possible implementation, as shown in Fig. 3(a), the information collection area S1 is located in the field of view area S21, the field of view area S21 is located outside the information collection area S1, the field of view area S21 is arranged around the periphery of the information collection area S1, the field of view area S21 completely surrounds the information collection area S1, and the shape of the field of view area S21 matches the shape of the laminated glass 10. The shielding area S22 is in the shape of an annular frame, and the shielding area S22 surrounds the periphery of the field of view 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 periphery of the field of view area S21. The side S11 of the information collection area S1 is arranged at a distance from the inner side S222 of the shielding area S22.

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

[0054] The information collection area S1 can also be triangular, rectangular, trapezoidal, pentagonal, hexagonal, etc. The shielding area S22 can also be in other shapes. The field of view area S21 and the information collection area S1 can also have other positional relationships, and the field of view area S21 can also be in other shapes. The present application does not strictly limit the arrangement position and shape of the information collection area S1 and the field of view area S21.

[0055] Please refer to Figs. 2 and 3, the anti-reflection film 20 is arranged on the fourth surface 132 of the inner glass sheet 13. Specifically, the anti-reflection film 20 is arranged on the laminated glass 10 at a position corresponding to the information collection area S1. In 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 the information collection area S1 (the width and length dimensions of the anti-reflection film 20 are at least equal to the width and length dimensions of the information collection area S1, or the width and length dimensions of the anti-reflection film 20 can be greater than the width and length dimensions of the information collection area S1, length for length, width for width). By arranging the anti-reflection film 20 on the fourth surface 132 of the inner glass sheet 13, the reflection of light in the wavelength range of 900-1000 nm by the vehicle window glass 100 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 light rays in the wavelength range of 900-1000 nm incident at an incident angle of 62°-68° is increased by at least 4% compared to the transmittance of the information collection area S1 not provided with the anti-reflection film 20 to light rays in the wavelength range of 900-1000 nm incident at an incident angle of 62°-68°. That is, by providing the anti-reflection film 20, the transmittance of the information collection area S1 of the vehicle window glass 100 to light rays in the wavelength range of 900-1000 nm 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 light rays in the wavelength range of 900-1000 nm 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 rays in the wavelength range of 900-1000 nm incident at an incident angle of 62°-68° is increased by at least 8%.

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

[0058] In the present application, the antireflection film 20 comprises a plurality of stack structures. From the fourth surface 132 of the inner glass sheet 13 to the direction away from the outer glass sheet 11, the stack structure comprises a high refractive index layer and a low refractive index layer which are sequentially stacked. For example, the high refractive index layer closest to the fourth surface 132 of the inner glass sheet 13 and the low refractive index layer closest to the fourth surface 132 of the inner glass sheet 13 constitute a first stack structure, and the high refractive index layer second closest to the fourth surface 132 of the inner glass sheet 13 and the low refractive index layer second closest to the fourth surface 132 of the inner glass sheet 13 constitute a second stack structure. As the number of stack structures increases, the number of film layers of the antireflection film 20 also increases and is always even. From the fourth surface 132 of the inner glass sheet 13 to the thickness direction of the antireflection film 20, the odd layers are high refractive index layers, and the even layers are low refractive index layers; the high refractive index layer in contact with the fourth surface 132 of the inner glass sheet 13 and the low refractive index layer farthest from the fourth surface 132 of the inner glass sheet 13. By stacking a plurality of stack structures, the light forms a plurality of reflections at the contact interfaces of the plurality of high refractive index layers and low refractive index layers, and according to the half-wave cancellation principle, the function of reducing reflection or increasing transmission on the glass surface is finally realized.

[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. Among them, 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 sheet 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 the present embodiment, the number of stack structures is 4-10. Specifically, the number of stack 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 antireflection film 20 is 300 nm to 1500 nm. The thickness is a physical thickness, and the description of thickness in the entire text is a physical thickness. In one possible embodiment, the total thickness of the antireflection film 20 is 600 nm to 1200 nm. In another possible embodiment, the total thickness of the antireflection film 20 is 800 nm to 1000 nm. It can be understood that when the thickness of the antireflection film 20 is less than 300 nm, the thickness of the antireflection film 20 is too thin, and on the one hand, the antireflection effect of the antireflection film 20 is limited; on the other hand, it is difficult to adjust the color of the antireflection film 20. When the thickness of the antireflection film 20 is greater than 1500 nm, the thickness of the antireflection film 20 is too thick, and the antireflection film 20 is likely to be easily peeled off from the laminated glass 10 due to film stress; in addition, the haze of the antireflection film 20 is large, and the transmittance is reduced, which also affects the transmittance of light.

[0063] Referring to FIG. 4, the plurality of 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 a metal oxide. The material of the high refractive index layer of the second stacked structure 20b can be an oxide, a nitride, or an oxynitride, etc.

[0064] It should be noted that the number of the first stacked structure 20a and the second stacked structure 20b in FIG. 4 is only illustrative, and does 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 to 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 wherein M is a metal element such as Nb, La, Ta, Ti, Mo, Hf, and Zr, O is an oxygen element, m is the number of atoms corresponding to the metal element in each M m O n molecule, and 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 metal oxide in a partially oxidized state 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 degree of oxidation of the material of the high refractive index layer of the first stacked structure is less than or equal to 70%. In one possible embodiment, the material of the high refractive index layer of the first stacked structure 20a is selected from Nb m O nwherein m = 2, n ≤ 3.5. In another possible implementation, the material of the high refractive index layer of the first stack structure 20a is selected from Ti m O n wherein m = 1, n ≤ 1.4.

[0067] The low refractive index layer of the first stack structure 20a has a refractive index of 1.4-1.9. The material of the low refractive index layer can be selected from at least one of nitride, oxide, oxynitride of Si, Al, SiAl, etc. For example, the material of the low refractive index layer of the first stack structure 20a is at least one of SiO x , MgF x , AlO x , WO x , YF x , BaF x .

[0068] The high refractive index layer of the second stack structure 20b has a refractive index of 2.1-3.5. The material of the high refractive index layer of the second stack structure 20b can be selected from at least one of oxide, nitride, oxynitride of Nb, La, Ta, Ti, Mo, Hf, Zr, and alloys thereof. When the material of the high refractive index layer of the second stack structure 20b is oxide, the material of the high refractive index layer of the second stack structure 20b can be in a partially oxidized state or in a fully oxidized state. For example, the material of the high refractive index layer of the second stack structure 20b is at least one of NbO x , SiN x , ZrO x , TiO x , TiN x , MoO x , TaO x , HfO x . The high refractive index layer of the second stack structure 20b can also be Si.

[0069] The low refractive index layer of the second stack structure 20b has a refractive index of 1.4-1.9. The material of the low refractive index layer can be selected from at least one of nitride, oxide, oxynitride of Si, Al, SiAl, etc. For example, the low refractive index layer of the second stack structure 20b is at least one of SiO x , MgF x , AlO x , WO x , YF x , BaF x .

[0070] The sum of the number of the first stack structure 20a and the second stack structure 20b is equal to the number of all stack structures of the anti-reflection film 20. The number of the first stack structure 20a is 1-3. All the first stack structures 20a are closer to the inner glass sheet 13 than all the second stack structures 20b in the thickness direction of the vehicle window glass 100. In one possible embodiment, the number of the first stack structure 20a is 1. The first stack structure 20a is closest to the inner glass sheet 13. All the second stack structures 20b are located on the side of the first stack structure 20a away from the inner glass sheet 13. For example, as shown in FIG. 4, the number of the first stack structure 20a is 1. The number of the second stack structure 20b is 4. In another possible embodiment, the number of the first stack structure 20a is 2. One of the first stack structures 20a is closest to the inner glass sheet 13, and the other first stack structure 20a is second closest to the inner glass sheet 13. All the second stack structures 20b are located on the side of the two first stack structures 20a away from the inner glass sheet 13. In yet another possible embodiment, the number of the first stack structure 20a is 3. One of the first stack structures 20a is closest to the inner glass sheet 13, another first stack structure 20a is second closest to the inner glass sheet 13, and the other first stack structure 20a is third closest to the inner glass sheet 13. All the second stack structures 20b are located on the side of the three first stack structures 20a away from the inner glass sheet 13.

[0071] In the present application, the vehicle window glass 100 is subjected to heat treatment. The temperature range of the heat treatment process is 550-650°C. After the heat treatment, the material of the high refractive index layer of the first stack structure 20a of the anti-reflection 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 stack 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 fully oxidized is Ti m O n , m = 1, n = 2.

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

[0073] After the heat treatment of the vehicle window glass 100, the a value of the visible light reflection color of the information acquisition area S1 measured from the 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, wherein a is the red-green color hue value and b is the yellow-blue color hue value.

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

[0075] In addition, the antireflection film 20 can improve the transmittance of infrared light of the information acquisition area S1 of the vehicle window glass 100 after high-temperature heat treatment at 550-650°C, that is, the antireflection film 20 has good thermal stability. Since the processing technology of the vehicle window glass 100 is usually performed after the film coating process on the surface of the laminated glass 10, the antireflection film 20 can adapt to the processing technology (processing temperature range of 550-650°C) of the vehicle window glass 100, such as baking, pressing or tempering treatment, etc. In this way, after the processing treatment of the vehicle window glass 100, the optical performance of the information acquisition area S1 of the vehicle window glass 100 is not only not degraded, but is improved, which is beneficial to improve the transmittance of infrared light of the information acquisition area S1 of the vehicle window glass 100. Especially when the vehicle window glass 100 is the front windshield, after the heat treatment process such as baking and pressing of the vehicle window glass 100, the transmittance of infrared light of the information acquisition area S1 of the vehicle window glass 100 remains high.

[0076] The antireflection film 20 provided by the embodiments of the present application is laminated on the surface of the laminated glass 10, without damaging the structural integrity of the laminated glass 10, so as to ensure the safety performance of the vehicle 1000.

[0077] The following specific embodiments of the antireflection film 20 with different structures are described in detail.

[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 intermediate layer is a PVB with a thickness of 0.76 mm. The antireflection film 20 is laminated on the fourth surface 132 of the inner glass plate 13.

[0080] Please refer to FIG. 5 and Table 1, the antireflection film 20 includes 7 stacked structures. The number of 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 Nb2O5, that is, the material of the high refractive index layer of the first stacked structure 20a is completely oxidized. The refractive index of Nb2O5 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. m O n Among them, 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 n The refractive index of Nb2O5 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, from the fourth surface 132 of the inner glass sheet 13, along the thickness direction of the antireflection film 20, the stacking orders of the plurality of stacked structures are 1, 2, 3, 4, 5, 6, 7, respectively. The first stacked structure includes the high refractive index layer H1 and the low refractive index layer L1; the second stacked structure includes the high refractive index layer H2 and the low refractive index layer L2; the third stacked structure includes the high refractive index layer H3 and the low refractive index layer L3. The first stacked structure, the second stacked structure, and the third stacked structure are all the first stacked structure 20a. The fourth stacked structure includes the high refractive index layer H4 and the low refractive index layer L4; the fifth stacked structure includes the high refractive index layer H5 and the low refractive index layer L5; the sixth stacked structure includes the high refractive index layer H6 and the low refractive index layer L6; the seventh stacked structure includes the high refractive index layer H7 and the low refractive index layer L7. The fourth stacked structure, the fifth stacked structure, the sixth stacked structure, and the seventh stacked structure are all the second stacked structure 20b.

[0082] The laminated glass 10 provided with the antireflection film 20 is subjected to heat treatment to obtain the curved vehicle window glass 100. Specifically, the heat treatment is performed at 630°C. The film layer structure parameters of the antireflection film 20 after the heat treatment are also recorded in Table 1.

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

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

[0085] As can be seen from Table 1, before the heat treatment, the material of the high refractive index layer of all the first stacked structures 20a of the antireflection film 20 is in a partially oxidized state. The high refractive index layer of the second stacked structure 20b of the antireflection film 20 is in a completely oxidized state. According to the test results, the transmittance of the information acquisition area S1 of the vehicle window glass 100 to the light in the wavelength range of 905 nm at an incident angle of 65° is 78.5%. 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 acquisition area S1 is -3.5, and the b value is -1.2, wherein a is the red-green color value, and b is the yellow-blue color value.

[0086] After the heat treatment of the vehicle window glass 100, the high refractive index layer of the first stack structure 20a of the anti-reflection film 20 is in a fully oxidized state. The thickness of the high refractive index layer of the first stack structure 20a increases by 20% from the fourth surface 132 of the inner glass sheet 13 along the thickness direction of the anti-reflection film 20; the thickness of the high refractive index layer of the second stack structure 20a increases by 15.6%; and the thickness of the high refractive index layer of the third stack structure 20a increases by 28%. The high refractive index layer of the second stack structure 20b of the anti-reflection film 20 is in a fully oxidized state, and the thickness of the high refractive index layer of the second stack structure 20b of the anti-reflection film 20 remains unchanged. The transmittance of the information acquisition area S1 of the vehicle window glass 100 to light in the 905 nm wavelength range at an incident angle of 65° is 80.1%. The a value of the visible light reflection color of the information acquisition area S1 from the first surface 111 side of the vehicle window glass 100 is -3.3, and the b value is -1.8, where L is the brightness value, a is the red-green color hue value, and b is the yellow-blue color hue value. It can be seen that, after the heat treatment of the vehicle window glass 100, the transmittance of the information acquisition area S1 to light in the 905 nm wavelength range at an incident angle of 65° increases by 1.6% compared to before the heat treatment.

[0087] Example 2:

[0088] The outer glass sheet 11 is a transparent glass with a thickness of 3.2 mm and a refractive index of 1.6, and the inner glass sheet 13 is a transparent glass with a thickness of 1.1 mm and a refractive index of 1.52. The interlayer is a PVB with a thickness of 0.76 mm. The anti-reflection film 20 is laminated to the fourth surface 132 of the inner glass sheet 13.

[0089] Please refer to FIG. 6 and Table 2, the anti-reflection film 20 includes four stack structures. The number of layers of the anti-reflection film 20 is 8. Among them, the number of the first stack structure 20a is three. The material of the high refractive index layer of the first stack structure 20a is Nb2O5, that is, the material of the high refractive index layer of the first stack structure 20a is in a fully oxidized state. The refractive index of Nb2O5 is 2.3. The material of the low refractive index layer of the first stack structure 20a is SiO2. The refractive index of SiO2 is 1.47. m O n Among them, M is the element Nb, m = 2, and n = 3.3, that is, the material of the high refractive index layer of the first stack structure 20a is in a partially oxidized state. The refractive index of Nb2O5 is 2.18. The material of the low refractive index layer of the first stack structure 20a is SiO2. The refractive index of SiO2 is 1.5. m O n The material of the high refractive index layer of the second stack structure 20b is Nb2O5, that is, the material of the high refractive index layer of the second stack structure 20b is in a fully oxidized state. The refractive index of Nb2O5 is 2.3. The material of the low refractive index layer of the second stack structure 20b is SiO2. The refractive index of SiO2 is 1.47.

[0090] Specifically, from the fourth surface 132 of the inner glass sheet 13, along the thickness direction of the anti-reflective film 20, the stacking orders of the plurality of stacked structures are 1, 2, 3, and 4, respectively. The first stacked structure includes the high refractive index layer H1 and the low refractive index layer L1; the second stacked structure includes the high refractive index layer H2 and the low refractive index layer L2; and the third stacked structure includes the high refractive index layer H3 and the low refractive index layer L3. The first stacked structure, the second stacked structure, and the third stacked structure are all the first stacked structures 20a. The fourth stacked structure includes the high refractive index layer H4 and the low refractive index layer L4. The fourth stacked structure is the second stacked structure 20b.

[0091] The vehicle window glass 100 is subjected to heat treatment to obtain a heat-treated vehicle window glass 100. Specifically, the heat treatment is performed by using the same equipment as described in Example 1. The heat treatment is performed at a temperature of 640°C. The film layer structure parameters of the anti-reflective film 20 after the heat treatment are also shown in Table 2.

[0092] The optical performance of the information acquisition region S1 of the vehicle window glass 100 before and after the heat treatment is measured by using a spectrophotometer (company: PERKINELMER, model: LAMBDA950). The color value of the information acquisition region S1 of the vehicle window glass 100 is measured by using a colorimeter (company: HUNTERLAB, model: ULTRASCAN PRO).

[0093] Table 2 Structure parameters of the anti-reflective film 20 in Example 2

[0094] As shown in Table 2, before the heat treatment, the material of the high refractive index layer of all the first stacked structures 20a of the anti-reflective 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-reflective film 20 is in a fully oxidized state. According to the test results, the transmittance of the information acquisition region S1 of the vehicle window glass 100 to the light in the wavelength range of 905 nm at an incident angle of 65° is 77.5%. 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 acquisition region S1 is -4.9, and the b value is -2.3, wherein a is the red-green color value, and b is the yellow-blue color value.

[0095] After the heat treatment, the high refractive index layer of the first stack structure 20a of the anti-reflective film 20 is in a fully oxidized state. The thickness of the high refractive index layer of the first stack structure 20a increases by 17.1% from the fourth surface 132 of the inner glass sheet 13 along the thickness direction of the anti-reflective film 20; the thickness of the high refractive index layer of the second stack structure 20a increases by 13.1%; and the thickness of the high refractive index layer of the third stack structure 20a increases by 18.2%. The high refractive index layer of the second stack structure 20b of the anti-reflective film 20 is in a fully oxidized state, and the thickness of the high refractive index layer of the second stack structure 20b of the anti-reflective film 20 remains unchanged. The transmittance of the information collection area S1 of the vehicle window glass 100 to light in the 905 nm wavelength range at an incident angle of 65° is 79.2%. The a value of the visible light reflection color of the information collection area S1 from the first surface 111 side of the vehicle window glass 100 is -5.2, and the b value is -2.6, where a is the red-green color hue value and b is the yellow-blue color hue value. It can be seen that, after the heat treatment, the transmittance of the information collection area S1 of the vehicle window glass 100 to light in the 905 nm wavelength range at an incident angle of 65° increases by 1.7% compared to before the heat treatment.

[0096] Referring to FIG. 7, the vehicle window glass 100 of the present embodiment further comprises a heat insulation film 40, which is arranged on the third surface 131 of the inner glass sheet 13 and / or the second surface 112 of the outer glass sheet 11, i.e., the heat insulation film 40 is arranged between the outer glass sheet 11 and the inner glass sheet 13, away from the information collection area S1 of the vehicle window glass 100. Specifically, the heat insulation film 40 is arranged on the laminated glass 10 at a position corresponding to the field of view area S21. Along the thickness direction of the laminated glass 10, the orthographic projection of the heat insulation film 40 on the laminated glass 10 completely overlaps the field of view area S21 (the width and length of the heat insulation film 40 are equal to the width and length of the field of view area S21). The heat insulation film 40 can reflect light, achieving the heat insulation and sun protection effect of the field of view area S21. The heat insulation 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 heat insulation film 40 on the laminated glass 10 can also partially overlap the field of view area S21 (the width and length of the heat insulation film 40 are smaller than the width and length of the field of view area S21).

[0097] In this embodiment, the heat insulation film 40 is a functional metal layer, which includes one 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 can also include multiple metal layers, and each metal layer is located between two adjacent dielectric layers. In this application, "multiple" means two or more. The dielectric layer has the functions of protecting the metal layer from oxidation and adjusting the optical performance, mechanical performance and reflection color of the heat insulation film 40. The material of the metal layer can be a metal or a metal alloy selected from at least one element of Ag, Au, Cu, Al, Pt, and the material of the dielectric layer can be at least one of nitride, oxide and oxynitride of a metal selected from Zn, Sn, Ti, Si, Al, Ni, Cr, Nb, Mg, Zr, Ga, Y, In, Sb, V, Ta and alloys thereof.

[0098] In order to ensure that the field of view S21 has high transmittance, the heat insulation film 40 only needs to be arranged on any one of the second surface 112 of the outer glass plate 11 or the third surface 131 of the inner glass plate 13. In some other embodiments, the heat insulation film 40 can also be a transparent conductive oxide coating or a light absorbing layer, and the application does not strictly limit the material of the heat insulation film 40.

[0099] The laminated glass 10 is also provided with a shielding layer 50, which is stacked around 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 arranged on the laminated glass 10 at a position corresponding to the shielding area S22. In the thickness direction of the laminated glass 10, the orthogonal projection of the shielding layer 50 on the laminated glass 10 completely overlaps the shielding area S22 (the width and length of the shielding layer 50 are equal to the width and length 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 of preventing ultraviolet rays, preventing the parts inside the vehicle 1000 from being damaged due to direct sunlight, thereby improving the service life of the parts inside the vehicle 1000. At the same time, the shielding layer 50 can also shield the parts inside the vehicle 1000 to ensure the overall aesthetic appearance of external observation. In some other embodiments, in the thickness direction of the laminated glass 10, the orthogonal projection of the shielding layer 50 on the laminated glass 10 can also partially overlap the shielding area S22 (the width and length of the shielding layer 50 are less than the width and length of the shielding area S22).

[0100] The above has carried out the detailed introduction to the embodiment of the application, the principle and implementation mode of the application have been described by applying specific examples in this paper, the above embodiment explanation is only for helping understanding the method of the application and its core idea; at the same time, for the general technical personnel in the art, according to the idea of the application, there will be changes in specific implementation mode and application range, and the above-mentioned, the content of the specification should not be understood as the limitation of the application.

Claims

1. A vehicle glazing, characterised in that, The vehicle window glass comprises a laminated glass and an information collection area, the laminated glass comprises an outer glass sheet, an intermediate layer and an inner glass sheet, the intermediate layer is sandwiched between the outer glass sheet and the inner glass sheet, the outer glass sheet comprises a first surface and a second surface arranged away from the first surface, the second surface faces the intermediate layer, the inner glass sheet comprises a third surface and a fourth surface arranged away from the third surface, the third surface faces the intermediate layer; A total of four to ten stack structures are arranged on the fourth surface of the inner glass sheet, and the stack structures are sequentially stacked in the thickness direction of the laminated glass, each of the stack structures comprises a high refractive index layer and a low refractive index layer which are sequentially stacked, and the high refractive index layer of each of the stack structures is arranged away from the outer glass sheet. The transmittance of the information collection area of the vehicle window glass covered by the antireflection film to light in the wavelength range of 900 nm to 1000 nm at an incident angle of 62° to 68° is increased by at least 1% after the heat treatment compared with that before the heat treatment.

2. The glazing according to claim 1, wherein, The stack structures are divided into first stack structures and second stack structures, and all the first stack structures are closer to the inner glass sheet than all the second stack structures in the thickness direction of the laminated glass. The high refractive index layer of the first stack structure is a metal oxide in a partially oxidized state before the heat treatment, and the high refractive index layer of the first stack structure is a metal oxide in a fully oxidized state after the heat treatment.

3. The glazing according to claim 2, wherein, The material of the high refractive index layer of the first laminated structure is metal oxide M m O n Wherein M is a metal element, O is an oxygen element, m is the number of atoms corresponding to the metal element in each M m O n 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 glazing according to claim 3, wherein, Before the heat treatment, the range of n is n≤p*m*0.

35.

5. The glazing of claim 3, wherein, The metal element is at least one of Nb, La, Ta, Ti, Mo, Hf and Zr.

6. The glazing of claim 2, wherein, The number of the first stack structures is one to three.

7. The glazing of claim 2, wherein, After the heat treatment, the thickness of the high refractive index layer of each of the first stack structures is increased by at least 10% compared with that before the heat treatment.

8. The glazing of claim 2, wherein, The material of the high refractive index layer of the second stack structure is at least one of Si, NbO x , SiN x , ZrO x , TiO x , TiN x , MoO x , TaO x , HfO x .

9. The glazing of claim 2, wherein, The material of the low refractive index layer of the first stack structure is at least one of SiO x , MgF x , AlO x , WO x , YF x , BaF x The material of the low refractive index layer of the second stack structure is at least one of SiO x , MgF x , AlO x , WO x , YF x , BaF x .

10. The vehicle glazing of claim 1, wherein, The refractive index of the high refractive index layer is 2.1 to 3.5, and the refractive index of the low refractive index layer is 1.4 to 1.

9.

11. The vehicle glazing of claim 10, wherein, The difference between the refractive index of the high refractive index layer and the refractive index of the low refractive index layer is greater than 0.

3.

12. The vehicle glazing of claim 1, wherein, The number of the stack structures is four to ten.

13. The glazing of claim 1, wherein, The total thickness of the antireflection film is 300 nm to 1500 nm.

14. The vehicle glazing of claim 1, wherein, Before the heat treatment, the transmittance of the information collection area to light in the wavelength range of 900 nm to 1000 nm at an incident angle of 62° to 68° is greater than or equal to 76%.

15. The window pane of claim 1, wherein, Before the heat treatment, the transmittance of the information collection area provided with the antireflection film to light in the wavelength range of 900 nm to 1000 nm at an incident angle of 62° to 68° is increased by at least 4% compared with that of the information collection area without the antireflection film.

16. The window pane of claim 1, wherein, 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 window pane of claim 1, wherein, The heat treatment is performed at a temperature in the range of 550°C to 650°C.

18. The glazing of claim 1 wherein, After the heat treatment, the visible light reflection color of the information acquisition region has an a value less than or equal to -2 and a b value less than 0, as measured from the side of the first surface, where a is a red-green color hue value and b is a yellow-blue color hue value.

19. The glazing of claim 1 wherein, The vehicle window glass further comprises a heat shield film arranged on the second surface of the outer glass sheet and / or the third surface of the inner glass sheet, away from the information acquisition region of the vehicle window glass.

20. A vehicle characterized by A vehicle comprising a vehicle body and a vehicle window glass according to any one of claims 1 to 19, the vehicle window glass being attached to the vehicle body.

Images