Vehicle glass, vehicle glass assembly and vehicle

Abstract

The invention provides vehicle glass, a vehicle glass assembly and a vehicle, the vehicle glass comprises laminated glass, a first bonding layer and a first glass plate, the first glass plate is connected with the laminated glass through the first bonding layer or arranged in the laminated glass through the first bonding layer, and the first bonding layer is arranged between the first glass plate and the laminated glass. The first glass plate comprises a first signal transmission area and a first shielding area, and the first shielding area is arranged around the first signal transmission area. Therefore, the problems of local optical deformation and distortion of the glass are reduced, and the diopter performance of the vehicle glass in a sensor area is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of glass, and more particularly to a vehicle glass, a vehicle glass assembly, and a vehicle. Background Technology

[0002] Existing windshields often shield the sensor area by setting black ceramic printing on the first or second glass plate. However, during the hot bending process of the glass, the printed layer forms a thermal gradient due to the difference in thermal expansion coefficient and heat absorption characteristics, which leads to problems such as local optical deformation, distortion and refractive error in the sensor's field of view, affecting the sensing accuracy and making it difficult to meet the stringent requirements of the sensing system for dual image suppression. Summary of the Invention

[0003] The purpose of this application is to provide a vehicle glass, a vehicle glass assembly, and a vehicle to solve the technical problems in the background art described above.

[0004] To address the aforementioned problems, in a first aspect, this application provides a vehicle glass comprising laminated glass, a first adhesive layer, and a first glass plate. The first glass plate is connected to the laminated glass via the first adhesive layer or disposed within the laminated glass via the first adhesive layer. The first glass plate includes a first signal transmission area and a first shielding area, wherein the first shielding area is disposed around the first signal transmission area.

[0005] Therefore, by transferring the shielding function to an independent first glass plate (i.e., the first shielding area), the existing technology of setting black ceramic printing on the glass plate of laminated glass is replaced. This avoids the thermal gradient formed by the difference in thermal expansion coefficient and heat absorption characteristics of ceramic printing during hot bending, thereby reducing the problem of local optical deformation and distortion of the glass and significantly improving the refractive performance of vehicle glass in the sensor area.

[0006] In some possible embodiments of the first aspect, the laminated glass includes a light-transmitting area and a second shielding area, the second shielding area being disposed around the light-transmitting area and, along the thickness direction of the laminated glass, the first shielding area and the second shielding area at least partially overlap.

[0007] In some possible embodiments of the first aspect, the first glass panel includes a first shielding layer forming a first shielding area, and the laminated glass includes a second shielding layer forming a second shielding area, wherein the color difference between the first shielding layer and the second shielding layer is less than or equal to 2%.

[0008] In some possible embodiments of the first aspect, the first adhesive layer has a wedge-shaped angle.

[0009] In some possible embodiments of the first aspect, the laminated glass includes a second glass plate, a third glass plate, and a second adhesive layer located between the second glass plate and the third glass plate.

[0010] In some possible embodiments of the first aspect, when the first glass plate is disposed within the second adhesive layer through the first adhesive layer, the second adhesive layer is a multilayer structure, the second adhesive layer includes a first sublayer, a first glass layer and a second sublayer disposed sequentially, the first glass layer including the first glass plate and the first adhesive layer.

[0011] In some possible embodiments of the first aspect, the visible light transmittance of the first adhesive layer and the second adhesive layer is greater than or equal to 85%; And / or, the haze of the first adhesive layer and the second adhesive layer is less than or equal to 1%.

[0012] In some possible embodiments of the first aspect, the laminated glass includes a second signal transmission region disposed within the light transmission region, wherein the first signal transmission region and the second signal transmission region at least partially overlap.

[0013] In some possible embodiments of the first aspect, the thickness of the first glass plate ranges from 0.1 mm to 1.1 mm.

[0014] In some possible embodiments of the first aspect, the material of the first glass plate is glass or polycarbonate.

[0015] In some possible embodiments of the first aspect, the refractive power of the vehicle glass in the first signal transmission region is less than or equal to 100 mdpt.

[0016] In a second aspect, a vehicle glass assembly is provided, including a light sensor and the vehicle glass described in the first aspect, wherein the light sensor is disposed on the inner side of the vehicle glass, and its projection on the vehicle glass is located in a first signal transmission area, and the light sensor is used to receive light signals transmitted through the first signal transmission area.

[0017] In some possible embodiments of the second aspect, the light sensor includes a camera and / or radar.

[0018] Thirdly, a vehicle is provided, including a body and a vehicle glass assembly as described in the second aspect, the vehicle glass assembly being connected to the body.

[0019] Therefore, in terms of optical performance, the technical solution of this application avoids the thermal gradient problem caused by traditional ceramic printing by using an independent first glass plate to carry the shielding function. Combined with the overlapping design of the shielding area, low color difference control, high light transmittance and low haze adhesive layer and wedge angle optical correction, it significantly reduces glass optical deformation, reduces stray light and imaging interference, provides a stable optical signal channel for sensors (cameras, radar, etc.), and improves the accuracy of environmental perception. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of vehicle glass in some embodiments of this application; Figure 2 This is another structural schematic diagram of the vehicle glass in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of the first glass plate in some embodiments of this application; Figure 4 This is another structural schematic diagram of the first glass plate in some embodiments of this application; Figure 5 This is yet another structural schematic diagram of the first glass plate in some embodiments of this application; Figure 6 This is a schematic diagram of the structure of laminated glass in some embodiments of this application; Figure 7 for Figure 2 A magnified structural diagram at point A; Figure 8 This is another structural schematic diagram of the first glass plate in some embodiments of this application; Figure 9 This is another structural schematic diagram of the laminated glass in some embodiments of this application; Figure 10 This is a schematic diagram of the structure of the second adhesive layer in some embodiments of this application; Figure 11 This is a structural block diagram of a vehicle glass assembly in some embodiments of this application; Figure 12 This is a structural block diagram of a vehicle in some embodiments of this application. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0023] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] Please refer to the following: Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of vehicle glass in some embodiments of this application. Figure 2 This is another structural schematic diagram of the vehicle glass in some embodiments of this application. Figure 3 This is a schematic diagram of the structure of the first glass plate in some embodiments of this application. In some embodiments, the vehicle glass 100 includes laminated glass 110, a first adhesive layer 120, and a first glass plate 130. The first glass plate 130 is connected to the laminated glass 110 through the first adhesive layer 120 or disposed inside the laminated glass 110 through the first adhesive layer 120. The structure in which the first glass plate 130 is connected to the laminated glass 110 through the first adhesive layer 120 is as follows: Figure 1 As shown, the first glass plate 130 is disposed inside the laminated glass 110 through the first adhesive layer 120, as follows: Figure 2 As shown.

[0026] like Figure 3As shown, the first glass plate 130 includes a first signal transmission area 131 and a first shielding area 132, wherein the first shielding area 132 is disposed around the first signal transmission area 131, and the first signal transmission area 131 is disposed corresponding to the position of the sensor 200, so as to allow the sensor 200 to perform sensing work through the first signal transmission area 131.

[0027] The vehicle glass 100 employs a composite structure design of laminated glass 110, a first adhesive layer, and a first glass plate 130. Its core lies in achieving synergistic optimization of shielding and optical performance through the functional integration of the first glass plate 130. Specifically, the connection between the first glass plate 130 and the laminated glass 110 includes two methods: one is direct connection to the outside of the laminated glass 110 via the first adhesive layer 120 (structure as shown in...). Figure 1 (as shown); another method is to embed the first adhesive layer 120 inside the laminated glass 110 (structure as shown). Figure 2 As shown in the figure, both methods can achieve a stable bond between the first glass plate 130 and the laminated glass 110.

[0028] And such Figure 3 As shown, the first glass plate 130 itself includes a first signal transmission area 131 and a first shielding area 132, wherein the first shielding area 132 is arranged around the first signal transmission area 131, forming a layout of peripheral shielding and central light transmission. The first signal transmission area 131 is set at the installation position of the sensor 200 to ensure that the sensor 200 can stably receive external light signals through this area to realize sensing work; while the first shielding area 132 replaces the traditional shielding structure on the laminated glass for shielding.

[0029] Therefore, by transferring the shielding function to an independent first glass plate 130 (i.e., the first shielding area 132), the existing scheme of setting black ceramic printing on the glass plate of the laminated glass 110 is replaced. This avoids the thermal gradient formed by the difference in thermal expansion coefficient and heat absorption characteristics of ceramic printing during hot bending, thereby reducing the problem of local optical deformation and distortion of the glass and significantly improving the refractive performance of the vehicle glass 100 in the sensor area.

[0030] In some embodiments, the layout of the first shielding area 132 of the first glass plate 130 can be flexibly adjusted according to actual needs to adapt to the integration scenarios of different sensors 200.

[0031] Please continue reading. Figure 3The first signal transmission area 131 is located near the bottom edge of the first glass plate 130, parallel to the lower boundary of the first shielding area 132, and has a significant gap from the lower boundary of the first shielding area 132. This design is suitable for scenarios where the sensor 200 requires central field-of-view coverage. The centered signal transmission area matches the wide-angle requirements of the sensor's field of view, and the shielding area more completely blocks the non-field-of-view area at the bottom of the glass, preventing stray light from interfering with the sensor signal.

[0032] Please see Figure 4 , Figure 4 This is another structural schematic diagram of the first glass plate in some embodiments of this application, such as... Figure 4 As shown, the lower edge of the first signal transmission area 131 coincides with the edge of the first shielding area 132, which is suitable for scenarios where the sensor 200 needs to be installed close to the bottom of the glass. The signal transmission area is close to the bottom, which allows the sensor to receive light signals directly through the bottom of the glass, reducing the reflection path of light inside the glass. At the same time, the shielding area is concentrated at the top, which can hide the non-field of view area above the sensor.

[0033] Please see Figure 5 , Figure 5 This is yet another structural schematic diagram of the first glass plate in some embodiments of this application. Figure 5 In this design, the first shielding area 132 completely covers the non-transparent area of ​​the first glass plate 130, including two independent first signal transmission areas 131. This design is suitable for scenarios where the sensor 200 is distributed among multiple modules (such as multiple cameras or radars working together). By using independent light-transmitting areas to match the field of view requirements of different sensors, and utilizing the large area coverage of the first shielding area 132 to achieve a more complete shielding effect, the optical consistency problem caused by the dispersion of traditional shielding layers is solved.

[0034] Please refer to the following: Figures 6 to 7 , Figure 6 This is a schematic diagram of the structure of laminated glass in some embodiments of this application. Figure 7 for Figure 2An enlarged structural schematic diagram at point A. In some embodiments, the laminated glass 110 includes a light-transmitting area 111 and a second shielding area 112, the second shielding area 112 being disposed around the light-transmitting area 111 and along the thickness direction w of the laminated glass 110, the first shielding area 132 and the second shielding area 112 at least partially overlap. Preferably, the overlap between the first shielding area 132 and the second shielding area 112 is 1mm-15mm; more preferably, the overlap between the first shielding area 132 and the second shielding area 112 is 3mm-12mm; even more preferably, the overlap between the first shielding area 132 and the second shielding area 112 is 5mm-10mm. Specifically, the overlap between the first shielding area 132 and the second shielding area 112 can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm and 15mm, etc.

[0035] The second shielding area 112 includes a top shielding area 112a located above the light-transmitting area 111, wherein, as shown... Figure 7 As shown, the upper edge a of the first glass plate 130 is higher than the lower edge b of the top shielding area 112a, so that the first shielding area 132 and the second shielding area 112 at least partially overlap.

[0036] Among them, such as Figure 6 and Figure 7 As shown, the laminated glass 110 integrates functional zones: the light-transmitting zone 111 is the core field of view of the laminated glass 110, while the second shielding zone 112 is distributed around the light-transmitting zone 111. Based on this, the upper edge a of the first glass plate 130 and the top shielding zone 112a of the laminated glass 110 form a staggered overlap, that is, the upper edge a of the first glass plate 130 is higher than the lower edge b of the top shielding zone 112a, so that the first shielding zone 132 and the second shielding zone 112 at least partially overlap in space.

[0037] Thus, by partially overlapping the first shielding area 132 and the second shielding area 112, the upper edge shielding area of ​​the glass achieves a seamless connection between the second shielding area 112 of the laminated glass 110 and the first shielding area 132 of the first glass plate 130, eliminating problems such as edge gaps caused by multiple shielding layers in traditional glass, and making the glass appearance simpler and more uniform.

[0038] Furthermore, the overlapping area of ​​the top shielding area 112a and the first shielding area 132 can jointly form a double shielding for the non-field of view area of ​​the sensor 200, thereby blocking stray light from the laminated glass 110 side and excess light from the first glass plate 130 side, so that the sensor 200 can only receive effective light signals through the first signal transmission area 131, reducing ambient light interference and improving the sensing accuracy of the sensor 200.

[0039] The overlap dimension between the upper edge a of the first glass plate and the lower edge b of the top shielding area needs to be set according to the actual situation. For example, if the vehicle glass undergoes large deformation displacement during processing, the overlap dimension needs to be appropriately increased to avoid inefficient deformation displacement leading to misalignment of the shielding layer, thereby ensuring that the first shielding area 132 and the second shielding area 112 always achieve effective overlap under different vehicle models and different sensor configurations.

[0040] Please refer to the following: Figure 2 and Figure 8 , Figure 8 This is another structural schematic diagram of the first glass plate in some embodiments of this application. In some embodiments, such as Figure 8 As shown, the first glass plate 130 includes a first shielding layer 133, which forms a first shielding area 132, such as... Figure 2 As shown, the laminated glass 110 includes a second shielding layer 113, which forms a second shielding area 112, wherein the color difference between the first shielding layer 133 and the second shielding layer 113 is less than or equal to 2%.

[0041] In particular, the multiple layers of shielding in conventional glass often exhibit significant color differences due to variations in materials, resulting in delamination boundaries on the glass surface and affecting the overall appearance of the vehicle. For example... Figure 2 and Figure 8 As shown, the first shielding area 132 of the first glass panel 130 is formed by the first shielding layer 133, and the second shielding area 112 of the laminated glass 110 is formed by the second shielding layer 113, and the color difference between the two is set to be less than or equal to 2%. Thus, through material selection and other means, it is ensured that the two shielding areas present a unified visual appearance.

[0042] Thus, by controlling the color difference to be less than or equal to 2%, the first masking layer 133 and the second masking layer 113 are visually almost integrated, and the layer boundary is difficult to detect even in strong light or backlight conditions, especially for vehicles with high requirements for appearance refinement.

[0043] In some embodiments, the first adhesive layer 120 has a wedge angle. This wedge angle can optically correct the light transmitted through the laminated glass 110.

[0044] The wedge angle is designed based on optical principles and is tailored to the characteristics of light passing through the laminated glass 110. When light passes through the laminated glass 110, it enters the first adhesive layer 120. Because the first adhesive layer 120 has a wedge angle, the propagation path of the light will change specifically according to factors such as the angle of the wedge angle and the optical refractive index of the adhesive layer, thereby achieving an optical correction effect on the light.

[0045] Therefore, by using the wedge-shaped angle of the first adhesive layer 120 for optical correction, the phase and propagation direction of the light passing through the laminated glass 110 can be effectively adjusted. The corrected light can be more accurately incident on the sensor's photosensitive element, greatly reducing problems such as image blurring and signal misjudgment caused by light propagation deviation, and improving the accuracy and stability of the sensor 200's sensing operation. Moreover, this method of integrating the wedge-shaped angle on the first adhesive layer 120 to achieve optical correction does not require the addition of additional complex optical correction components. It cleverly utilizes the original structural layer of the glass to expand its functions, simplifies the glass structure design, and can also specifically solve the optical distortion problem that may occur after the light passes through the glass. In addition to having basic functions such as shielding and light transmission, it helps to improve the optical adaptation performance of vehicle glass.

[0046] In some embodiments, the wedge angle of the first adhesive layer 120 can also optically correct the light transmitted through the single-layer glass. When light passes through the single-layer glass and enters the first adhesive layer 120, its propagation path will change specifically according to factors such as the wedge angle and the optical refractive index of the adhesive layer, thereby achieving the optical correction effect on the light.

[0047] In some embodiments, the first glass plate 130 also has a wedge angle for optical correction of light transmitted through the laminated glass 110. When light passes through the laminated glass 110 and enters the first glass plate 130 with the wedge angle, its propagation path is adjusted according to factors such as the wedge angle and its own optical refractive index, thereby achieving targeted optical correction of the light.

[0048] In some embodiments, the first adhesive layer 120 and the first glass plate 130 may be simultaneously provided with wedge angles. The wedge angle and tilt direction of the first adhesive layer 120 and the first glass plate 130 can be matched according to the propagation characteristics of light after passing through the laminated glass 110. The light first undergoes preliminary calibration through the wedge angle of the first adhesive layer 120, and then undergoes secondary correction through the wedge angle of the first glass plate 130, which can more comprehensively compensate for problems such as phase shift and direction deviation that may occur during the propagation of light.

[0049] Please refer to the following: Figure 2 and see Figure 9 , Figure 9This is another structural schematic diagram of laminated glass in some embodiments of this application. In some embodiments, such as Figure 9 As shown, the laminated glass 110 includes a second glass plate 114, a third glass plate 115, and a second adhesive layer 116 located between the second glass plate 114 and the third glass plate 115. The second adhesive layer 116 has a wedge-shaped angle, wherein, as... Figure 2 As shown, when the first glass plate 130 is disposed inside the laminated glass 110, the first glass plate 130 is disposed within the second adhesive layer 116 of the laminated glass 110 through the first adhesive layer 120.

[0050] Among them, such as Figure 2 and Figure 9 As shown, the laminated glass 110 specifically includes a second glass plate 114, a third glass plate 115, and a second adhesive layer 116 sandwiched between the two, wherein the second adhesive layer 116 has a wedge-shaped angle; when the first glass plate 130 is embedded in the laminated glass 110, it is integrated into the second adhesive layer 116 through the first adhesive layer 120, forming a nested structure in which the second adhesive layer 116 wraps the first adhesive layer 120 and the first glass plate 130 (that is, the second adhesive layer 116 is the outer layer, and the composite layer composed of the first adhesive layer 120 and the first glass plate 130 is the inner layer).

[0051] Thus, the wedge angle of the second adhesive layer 116 and the wedge angle of the first adhesive layer 120 form a dual optical adjustment, which can specifically compensate for the complex distortion of light propagation in the multilayer structure. Compared with the traditional correction method of a single adhesive layer, the synergistic effect of the dual wedge angles can more accurately control the light propagation path, reduce the distortion rate of the light signal passing through the first signal transmission area 131, and meet the sensor 200's requirement for low-distortion light signals.

[0052] Furthermore, the first glass plate 130 is disposed within the second adhesive layer 116 through the first adhesive layer 120, which avoids the increase in thickness caused by additional superimposed structures on the outside of the laminated glass 110. At the same time, the adhesive layer is used to fix the first glass plate 130 and the laminated glass 110 into a stable integral structure, reducing interlayer displacement caused by vibration during vehicle operation and reducing the risk of optical performance degradation.

[0053] In the design of integrating the first glass plate 130 into the laminated glass 110, a scheme is adopted to directly fabricate a wedge-shaped film on the first adhesive layer 120. Compared with the traditional method of drilling holes in the second adhesive layer 116 to integrate the wedge-shaped angle, the manufacturing efficiency is significantly improved. The former can directly composite the first adhesive layer 120 with the wedge-shaped angle with the first glass plate 130 and then integrate it into the laminated glass 110 by prefabricating the first adhesive layer 120 with the wedge-shaped angle, which saves the tedious process of drilling holes in the second adhesive layer 116 and reduces the problem of poor interlayer bonding caused by the error of the hole size. At the same time, the wedge-shaped film of the first adhesive layer 120 can be formed independently and then assembled with the laminated glass 110, which is more suitable for the modular production process and effectively improves the production efficiency.

[0054] In some embodiments, the wedge angle of the second adhesive layer 116 can also optically correct the light transmitted through the single-layer glass. When light passes through the single-layer glass and enters the second adhesive layer 116, its propagation path will change specifically according to factors such as the wedge angle and the optical refractive index of the adhesive layer, thereby achieving the optical correction effect on the light.

[0055] Please see Figure 10 , Figure 10 This is a schematic diagram of the structure of the second adhesive layer in some embodiments of this application. In some embodiments, when the first glass plate 130 is disposed within the second adhesive layer 116 through the first adhesive layer 120, the second adhesive layer 116 has a multi-layer structure. The second adhesive layer 116 includes a first sub-layer 116a, a first glass layer 116b, and a second sub-layer 116c arranged sequentially. The first glass layer 116b includes the first glass plate 130 and the first adhesive layer 120.

[0056] Among them, such as Figure 10 As shown, when the first glass plate 130 is embedded in the second adhesive layer 116 through the first adhesive layer 120, the second adhesive layer 116 adopts a multi-layer structure design with nested layers. From the outside to the inside, it consists of a first sub-layer 116a, a first glass layer 116b, and a second sub-layer 116c. The first glass layer 116b is composed of the first glass plate 130 and the first adhesive layer 120, forming a structure in which the first adhesive layer 120 wraps the first glass plate 130. Then, through the clamping of the first sub-layer 116a and the second sub-layer 116c, the functional unit is stably integrated inside the second adhesive layer 116.

[0057] Thus, the multi-layer structure, through the first sub-layer 116a and the second sub-layer 116c, encapsulates the first glass layer 116b, increasing the contact area between the first glass plate 130 and the second adhesive layer 116. This avoids problems such as edge warping that easily occur when glass is embedded in a traditional single-layer adhesive layer. This structure allows the second adhesive layer 116 to maintain the basic bonding function of the laminated glass 110, while also integrating shielding, signal transmission, and optical correction through the intermediate first glass layer 116b, further ensuring the stability of the light signal received by the sensor 200.

[0058] Please continue reading. Figure 1 and Figure 9 In some embodiments, such as Figure 9 The third glass panel 115 of the laminated glass 110 has a first surface P facing the interior of the vehicle. When the first glass panel 130 is connected to the laminated glass 110 via the first adhesive layer 120, as... Figure 1 As shown, the first glass plate 130 is connected to the first surface P through the first adhesive layer 120.

[0059] Among them, the third glass plate 115 of the laminated glass 110 serves as a substrate facing the interior of the vehicle, and a flat first surface P is formed on its inner side; when an external connection method is adopted, the first glass plate 130 is directly attached to the first surface P of the third glass plate 115 through the first adhesive layer 120, forming a superimposed structure of the laminated glass body and the external functional layer.

[0060] Therefore, the external connection design eliminates the need to modify the original interlayer structure of the laminated glass 110, allowing it to be directly adapted to the traditional production process of laminated glass 110. Only the first glass plate 130 needs to be added to the first surface P of the third glass plate 115. Furthermore, since the first glass plate 130 is externally connected through the first adhesive layer 120, when the first glass plate 130 is scratched or needs to be replaced, it can be disassembled and replaced separately without disassembling the overall structure of the laminated glass 110, thus reducing the later maintenance costs.

[0061] In some embodiments, the visible light transmittance of the first adhesive layer 120 and the second adhesive layer 116 is greater than or equal to 85%, and the haze of the first adhesive layer 120 and the second adhesive layer 116 is less than or equal to 1%.

[0062] Among them, a transmittance of visible light greater than or equal to 85% ensures that an external light signal of sufficient intensity can penetrate the adhesive layer and reach the first signal transmission area 131, avoiding a decrease in sensor sensitivity due to light intensity attenuation; while a haze of less than or equal to 1% means that there are no obvious bubbles, impurities or microstructural defects inside the adhesive layer, which can reduce the scattering and diffuse reflection of light during propagation and ensure that the light signal is incident on the sensor photosensitive element in a stable direction.

[0063] Therefore, high transmittance (≥85%) minimizes the loss of effective light signal by the adhesive layer, making it particularly suitable for light-sensitive sensors such as LiDAR and high dynamic range cameras, avoiding problems caused by light signal attenuation. Low haze (≤1%) eliminates optical interference introduced by the adhesive layer, ensuring a stable light propagation path, reducing imaging blurring and ranging errors caused by scattering, and improving the reliability of sensor data. Furthermore, the consistency of optical parameters between the first adhesive layer 120 and the second adhesive layer 116 avoids secondary reflections caused by differences in interlayer optical performance. For example, if the haze of a certain adhesive layer is too high, it will cause light to be repeatedly scattered between layers, forming stray light that interferes with the first signal transmission area 131, etc.

[0064] In some embodiments, the haze of the first adhesive layer 120 and the second adhesive layer 116 is less than or equal to 0.4%.

[0065] In some embodiments, the haze of the first adhesive layer 120 and the second adhesive layer 116 is further limited to less than or equal to 0.4%. This parameter imposes a higher requirement for optical purity compared to conventional adhesive layers. As a result, when light propagates in the layers, the optical path offset caused by interface scattering and particle reflection is controlled to a very small range, which can preserve the original propagation characteristics of the light signal to the maximum extent and further improve the reliability of sensor data.

[0066] Please continue reading. Figure 6 In some embodiments, the laminated glass 110 includes a second signal transmission region 117, which is disposed within the light transmission region 111, wherein the first signal transmission region 131 and the second signal transmission region 117 at least partially overlap.

[0067] The laminated glass 110 further divides its light-transmitting area 111 into a second signal transmission area 117, which is a specific area on the laminated glass that allows light signals to pass through efficiently. The first signal transmission area 131 of the first glass plate 130 (corresponding to the field of view position of the sensor 200) and the second signal transmission area 117 are designed to overlap spatially, that is, the two overlap at least partially in the vertical projection direction of the glass, forming a dual light transmission channel.

[0068] Therefore, the overlapping design of the second signal transmission area 117 and the first signal transmission area 131 can jointly shield stray light outside the sensor's field of view, allowing only the effective light signal in the target direction to pass through the dual light transmission channels, making the light signal received by the sensor 200 more stable.

[0069] In some embodiments, the thickness of the first glass plate 130 ranges from 0.1 mm to 1.1 mm. The lower limit of 0.1 mm ensures that the first glass plate 130 has basic structural strength and morphological stability, avoiding the problem of fragility caused by being too thin; while the upper limit of 1.1 mm controls the overall thickness increment of the first glass plate 130, avoiding the total thickness of the vehicle glass from exceeding the standard due to the first glass plate 130 being too thick.

[0070] Therefore, the thin design of 0.1mm to 1.1mm allows the first glass panel 130 to achieve both shielding and signal transmission functions without significantly increasing the overall weight of the vehicle glass 100, which is in line with the trend of vehicle lightweight design. At the same time, the thinner thickness makes it easier for the first glass panel 130 to be bonded to the laminated glass 110, reducing the problems of interlayer stress concentration or poor bonding caused by excessive thickness.

[0071] In some embodiments, the first glass plate 130 is made of glass or polycarbonate (PC). Glass offers excellent optical transmittance, high surface hardness, and good high-temperature resistance, ensuring long-term light transmission stability in the first signal transmission area 131. Polycarbonate (PC), on the other hand, boasts advantages such as lightweight, strong impact resistance, and ease of processing, making it suitable for weight-sensitive applications or scenarios requiring irregular structures. Both materials share the characteristic of stably supporting the first shielding layer 131 and exhibiting good compatibility with the first adhesive layer 120, ensuring interlayer bonding strength.

[0072] In some embodiments, the material of the first glass plate 130 may also include glass fiber reinforced composite materials (such as fiberglass), which have both light transmittance and high strength, and can be designed as an ultra-thin rigid structure to suit scenarios that require both strength and lightweight. The material of the first glass plate 130 can be set according to actual conditions and application scenarios, and is not specifically limited here.

[0073] In some embodiments, the refractive power of the vehicle glass 100 in the first signal transmission region 131 is less than or equal to 100 mdpt. Here, refractive power (mdpt) reflects the deviation in the glass's ability to refract light; the smaller the numerical fluctuation, the more stable the optical performance.

[0074] Therefore, compared to ordinary vehicle glass with or without a shielding layer, this refractive power range significantly reduces the deviation in light refraction, fundamentally improving the stability of optical performance. It effectively counteracts optical distortions caused by the multi-layered structure and hot bending process of laminated glass, ensuring that the propagation path deviation of light passing through the first signal transmission region 131 remains within a controllable range, providing a stable foundation for sensor optical signal transmission.

[0075] In some embodiments, the refractive power range of the vehicle glass 100 in the first signal transmission region 131 can be less than or equal to 80 mdpt, 75 mdpt, or 60 mdpt, forming a gradient optimization setting. Thus, smaller refractive power control can further reduce refraction deviation of light, meeting the optical purity requirements of higher precision sensors.

[0076] In some embodiments, the range of the double image of the vehicle glass 100 in the first signal transmission region 131 is less than or equal to 8 arcmin (′). The double image is a phenomenon of secondary reflection of light caused by the multi-layered structure of the glass; its value indicates the offset angle between the primary and secondary images in the imaging diagram. The smaller the value, the less imaging interference.

[0077] Therefore, this range can effectively suppress secondary reflection interference generated when light passes through the multi-layer structure such as laminated glass 110, first adhesive layer 120 and first glass plate 130, control the offset angle between the main image and the secondary image within a low range, reduce the impact of ghosting on imaging quality, and avoid problems such as blurred target boundaries and misjudgment of distance caused by ghosting.

[0078] In some embodiments, the range of the double image of the vehicle glass 100 in the first signal transmission region 131 is less than or equal to 5 arcmin (′). Thus, the smaller double image control further suppresses secondary reflection interference, the offset angle between the main image and the secondary image is controlled within a smaller range, the purity of the image is further improved, the risk of sensor misjudgment is further reduced, and the safety and reliability of intelligent driving are improved.

[0079] Please refer to Table 1. This application provides three sets of experimental data to verify the improved optical correction effect of the vehicle glass of this application on light transmitted through the vehicle glass. All three sets of experimental data were conducted under the condition that the vehicle glass was installed at an angle of 26°. The first and second sets of experimental data are control data. The first set of experimental data is for ordinary vehicle glass with a shielding layer, the second set is for ordinary vehicle glass without a shielding layer, and the third set is the experimental data for the vehicle glass 100 provided in this application with a first glass plate 130.

[0080] The measurement of refractive power can be performed using ISRA optical inspection equipment. Under the condition of a 26° installation angle on the vehicle glass, the projection module of ISRA optical inspection equipment emits multiple test beams to the signal transmission area of ​​the vehicle glass corresponding to the three sets of data. After the light passes through the glass, it is projected onto the inspection plate on the other side. The image acquisition module of the inspection equipment automatically acquires the deformation of the test beam on the inspection plate and automatically analyzes the degree of displacement of the test beam, and finally converts it into the corresponding refractive power value.

[0081] The measurement of the double image can be achieved in the following way: During the experiment, a laser signal is emitted into the signal transmission area of ​​the vehicle glass corresponding to the three sets of data. After the laser signal passes through the car window glass, the transmitted light signal is received by a collimating telescope. The collimating telescope can directly obtain the primary image and the secondary image formed by the light signal, and calculate the offset angle between the two based on the positional relationship between the primary image and the secondary image. This angle is the double image value.

[0082] Table 1. Comparison of experimental results on vehicle glass refractive power and double image.

[0083]

[0084] As shown in the first set of experimental data in Table 1, the minimum refractive power is greater than or equal to 120 mdpt, indicating that the minimum refractive power deviation of this glass is extremely large, and the light refraction distortion is severe, which will interfere with the imaging accuracy of the sensor. Moreover, the offset angle is 7′, indicating that the secondary reflection of light is obvious, which easily leads to "ghosting" in the image. In the second set of experimental data, the maximum refractive power is less than or equal to 98 mdpt, and its maximum refractive power deviation is slightly lower, but it is still much higher than the ideal value, indicating poor optical stability. Moreover, the offset angle is 7′, which also leads to obvious double images.

[0085] In the third set of experimental data, after adding the first glass plate 130 of this application to the ordinary vehicle glass with a shielding layer, the refractive power range was 120 mdpt ≤ D ≤ 145 mdpt. Compared with the ordinary vehicle glass with a shielding layer, the refractive power increased only slightly after adding the first glass plate (the maximum increase did not exceed 25 mdpt), which is far lower than the higher refractive power increase brought about by conventional glass plate additions. This indicates that the first glass plate design of this application can effectively suppress the interference of the added structure on light refraction, and the refractive power deviation is always controlled within a small range, resulting in a significant improvement in optical stability. At the same time, the double image shift angle was reduced to 4′, which is significantly reduced compared to 7′ in the first two groups, and the secondary reflection phenomenon was significantly weakened, effectively improving the imaging "ghosting" problem. It can be seen that by adding the first glass plate 130, this application optimizes the purity of the image and avoids the interference of light refraction distortion and ghosting on the sensor with almost no additional increase in refractive power deviation.

[0086] When the first glass plate 130 of this application is added to the vehicle glass with a normal shielding layer, the range of refractive power fluctuation is 0 mdpt to 25 mdpt, and the average value of the refractive power fluctuation is 3.625 mdpt. It should be noted that, under normal circumstances, adding an extra glass plate will significantly increase the refractive power, while this average value is the average value of the increase in refractive power after adding the first glass plate, and this increase is extremely small. Compared with the refractive power deviation of the first two sets of glass, the refractive power deviation of the solution of this application is significantly reduced, approaching ideal optical performance, with stable light refraction, and suitable for high-precision sensors; and the offset angle is 4′, indicating that the secondary reflection phenomenon is reduced and the imaging interference is reduced.

[0087] Therefore, based on the data of ordinary vehicle glass without a shielding layer in Group 2 of Table 1 (maximum refractive power ≤ 98 mdpt), it can be seen that if the first glass plate 130 of this application is added to the ordinary vehicle glass without a shielding layer, referring to the average increment of only 3.625 mdpt and the increment range of 0 mdpt to 25 mdpt in Group 3, the maximum refractive power after the addition will not exceed 98 mdpt + 25 mdpt = 123 mdpt, and the actual increment is more likely to be closer to 3.625 mdpt. That is, the refractive power after the addition is likely to be in the range of 98 mdpt to 101.625 mdpt, which is much lower than the minimum refractive power of ordinary vehicle glass with a shielding layer in Group 1 (≥ 120 mdpt). Therefore, it can be concluded that the refractive power of ordinary glass without a shielding layer will be less than that of ordinary glass with a shielding layer. This conclusion further confirms that by transferring the shielding function to an independent first glass plate 130, the existing scheme of setting black ceramic printing on the glass plate of the laminated glass 110 is replaced. This avoids the thermal gradient formed by the difference in thermal expansion coefficient and heat absorption characteristics of ceramic printing during hot bending, thereby reducing the problem of local optical deformation and distortion of the glass and significantly improving the refractive performance of the vehicle glass 100 in the sensor area.

[0088] Thus, through comparison, it can be verified that traditional ordinary glass and shielding solutions have poor optical performance (large diopter fluctuations and severe double images), which cannot meet the requirements of intelligent driving sensors; while the vehicle glass 100 of this application can significantly optimize optical indicators, improve the quality of sensor light signals, and support high-precision perception for intelligent driving.

[0089] Please see Figure 11 , Figure 11The following is a structural block diagram of a vehicle glass assembly in some embodiments of this application. In some embodiments, the vehicle glass assembly 300 includes a light sensor 310 and a vehicle glass 100 as described in any of the foregoing embodiments. The light sensor 310 is disposed inside the vehicle glass 100, and its projection on the vehicle glass 100 is located within the first signal transmission area. The light sensor 310 is used to receive light signals transmitted through the first signal transmission area.

[0090] The light sensor 310 is fixed to the inside of the vehicle glass 100 (i.e., the side facing the vehicle interior). Its spatial position is precisely calibrated so that the vertical projection of the light sensor 310 on the vehicle glass 100 falls completely within the first signal transmission area 131. This ensures that the photosensitive surface of the light sensor 310 only receives external light signals that pass through the first signal transmission area 131. Meanwhile, the first shielding area 132 effectively blocks the sensor's non-field of view, avoiding stray light interference. Furthermore, the light sensor 310 is directly installed inside the vehicle glass 100, eliminating the need for additional complex brackets extending outside the vehicle and avoiding the problems of traditional external sensors being susceptible to damage from wind, rain, and collisions.

[0091] In some embodiments, the light sensor 310 includes a camera and / or radar.

[0092] The optical sensor 310 can be specifically configured as one or a combination of a camera and a radar. The two devices work together to achieve environmental perception through the first signal transmission area 131 of the vehicle glass 100. The camera mainly captures image information in front of the vehicle by receiving visible light or infrared light signals, and relies on the high light transmittance and low distortion characteristics of the first signal transmission area 131 to ensure image clarity. The radar realizes distance measurement and obstacle detection by emitting and receiving reflected electromagnetic wave signals, and relies on the unobstructed signal characteristics of the first signal transmission area 131 to ensure that the electromagnetic wave penetration loss is controlled to a minimum.

[0093] In some embodiments, the optical sensor 310 may also include various other sensors such as infrared sensors, laser scanners, and ultraviolet sensors, which can be selected and combined according to the actual application scenario, without specific limitations.

[0094] Please see Figure 12 , Figure 12 The present invention provides a structural block diagram of a vehicle in some embodiments of the present application. In some embodiments, the vehicle 400 includes a body 410 and a vehicle glass assembly 300 as described in any of the foregoing embodiments, the vehicle glass assembly 300 being connected to the body 410.

[0095] Among them, the vehicle glass assembly 300 is connected to the window frame of the vehicle body 410 through sealing strips, fastening structures, etc. It not only serves as an important part of the vehicle body, fulfilling the traditional functions of wind and rain protection and light transmission for viewing, but also endows the vehicle 400 with environmental perception capabilities through the integrated light sensor 310 and the optimized structure of the vehicle glass 100, thereby improving the environmental judgment accuracy of the intelligent driving system.

[0096] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. Furthermore, for those skilled in the art, based on the ideas of this application, there will be changes in specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the protection scope of the technical solution.

Claims

1. A vehicle glazing characterised in that, The vehicle glass comprises a laminated glass, a first adhesive layer, and a first glass sheet connected to or arranged inside the laminated glass through the first adhesive layer, the first glass sheet comprising a first signal transmission area and a first shielding area, wherein the first shielding area is arranged around the first signal transmission area.

2. The vehicle glazing of claim 1, wherein, The laminated glass comprises a light transmission area and a second shielding area arranged around the light transmission area, and the first shielding area and the second shielding area at least partially overlap along the thickness direction of the laminated glass.

3. The vehicle glazing of claim 2, wherein, The first glass sheet comprises a first shielding layer forming the first shielding area, and the laminated glass comprises a second shielding layer forming the second shielding area, wherein the color difference between the first shielding layer and the second shielding layer is less than or equal to 2%.

4. The vehicle glazing of claim 1, wherein, The first adhesive layer has a wedge angle.

5. The vehicle glazing of claim 1, wherein, The laminated glass comprises a second glass sheet, a third glass sheet, and a second adhesive layer between the second glass sheet and the third glass sheet.

6. The vehicle glazing of claim 5, wherein, When the first glass sheet is arranged inside the second adhesive layer through the first adhesive layer, the second adhesive layer is a multi-layer structure, and the second adhesive layer comprises a first sub-layer, a first glass layer, and a second sub-layer arranged in sequence, and the first glass layer comprises the first glass sheet and the first adhesive layer.

7. The vehicle glazing of claim 5, wherein, The visible light transmittance of the first adhesive layer and the second adhesive layer is greater than or equal to 85%; And / or, the haze of the first adhesive layer and the second adhesive layer is less than or equal to 1%.

8. The vehicle glazing of claim 2, wherein, The laminated glass comprises a second signal transmission area arranged in the light transmission area, wherein the first signal transmission area and the second signal transmission area at least partially overlap.

9. The vehicle glazing of claim 1, wherein, The thickness of the first glass sheet ranges from 0.1 mm to 1.1 mm.

10. The vehicle glazing of claim 1, wherein, The material of the first glass sheet is glass or polycarbonate.

11. The vehicle glazing of claim 1, wherein, The refractive power of the vehicle glass at the first signal transmission area is less than or equal to 100 mdpt.

12. A vehicle glazing assembly characterised in that, The vehicle glass assembly comprises a light sensor and the vehicle glass according to claim 1, wherein the light sensor is arranged inside the vehicle glass, and the projection of the light sensor on the vehicle glass is located at the first signal transmission area, and the light sensor is used to receive a light signal transmitted through the first signal transmission area.

13. The vehicle glazing assembly of claim 12, wherein, The light sensor comprises a camera and / or a radar.

14. A vehicle characterized by comprising: The vehicle glass assembly according to claim 12 is connected to a vehicle body.

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