Laminated glass components and vehicles

Abstract

The present application provides a laminated glass assembly and a vehicle. The laminated glass assembly includes: laminated glass having a signal transmission area, the signal transmission area being used for the transmission of optical signals; a guide having a first surface bonded to the laminated glass, and a second surface disposed opposite to the first surface, the projection of the guide on the laminated glass covering the signal transmission area, and being used to change the transmission path of the optical signal, the refractive index of the guide continuously changing in a first direction, wherein the first direction is the thickness direction of the laminated glass; and a sensor installed inside the vehicle, the optical signal emitted by the sensor sequentially passes through the guide and the laminated glass, and / or the received optical signal sequentially passes through the laminated glass and the guide. The laminated glass assembly provided by the present application improves the transmittance of the optical signal through the guide with a gradually changing refractive index, thereby improving the detection effect of the laminated glass assembly.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a laminated glass assembly and a vehicle. Background Art

[0002] With the development of technology, more and more vehicles are equipped with Advanced Driving Assistance Systems (ADAS) for assisted driving, which are used to sense the surrounding environment and collect data during vehicle driving, and identify, detect and track static and dynamic objects, so as to predict possible dangers during vehicle driving and effectively increase the comfort and safety of vehicle driving. However, due to the obstruction of the vehicle's front windshield, the detection light waves in the ADAS will be reflected and absorbed when penetrating the tilted front windshield, resulting in a significant reduction in the transmittance of the detection light waves, resulting in poor detection effect of the ADAS. Summary of the invention

[0003] In a first aspect, an embodiment of the present application provides a laminated glass assembly, wherein the laminated glass assembly comprises:

[0004] Laminated glass, wherein the laminated glass has a signal transmission area, and the signal transmission area is used for transmitting optical signals;

[0005] a guide member, the guide member having a first surface attached to the laminated glass and a second surface disposed opposite to the first surface, the projection of the guide member on the laminated glass covering the signal transmission area, the guide member being used to change the transmission path of the optical signal, the refractive index of the guide member continuously changing in a first direction, wherein the first direction is a thickness direction of the laminated glass; and

[0006] A sensor is installed inside a vehicle, wherein a light signal emitted by the sensor passes through the guide member and the laminated glass in sequence, and / or a light signal received by the sensor passes through the laminated glass and the guide member in sequence.

[0007] Wherein, the material of the guide member includes at least one of glass, quartz, silicon nitride, sulfur-selenium compound, methyl methacrylate or trifluoroethyl methacrylate.

[0008] The guide member includes a plurality of guide portions connected in sequence in the first direction, and the refraction of the plurality of guide portions in the first direction first increases and then decreases.

[0009] The materials of the plurality of guide parts are the same or different, and the difference △n in refractive index between two adjacent guide parts satisfies: △n≤0.5.

[0010] Wherein, when the materials of the plurality of guide parts are the same, the guide member further comprises a first additive dispersed in the plurality of guide parts, the concentration of the first additive first increases and then decreases in the first direction, wherein the refractive index of the first additive is higher than the refractive index of the guide part;

[0011] Alternatively, the guide member further comprises a second additive dispersed in the plurality of guide portions, the concentration of the second additive first decreases and then increases in the first direction, wherein the refractive index of the second additive is lower than the refractive index of the guide portion.

[0012] Among the plurality of guide portions, the number of increasing refractive indices of two adjacent guide portions in the first direction is equal to the number of decreasing refractive indices.

[0013] Wherein, a difference between a refractive index of a guide portion among the plurality of guide portions that is bonded to the laminated glass and a refractive index of the laminated glass is less than or equal to 0.03.

[0014] Wherein, the guide member further includes a plurality of adhesive layers, and the plurality of adhesive layers are used for bonding the plurality of guide parts.

[0015] Among them, the transmittance of the bonding layer to the optical signal is greater than 90%, and the refractive index na of the bonding layer satisfies: 0.7nl≤na≤1.3nr, wherein nl is the refractive index of the guiding part with a lower refractive index among the two adjacent guiding parts bonded by the bonding layer, and nr is the refractive index of the guiding part with a higher refractive index among the two adjacent guiding parts bonded by the bonding layer.

[0016] The laminated glass has an upper side and a lower side when installed in a vehicle, and the thickness of the guide member increases continuously in a second direction, wherein the second direction is a direction from the upper side to the lower side.

[0017] The guide member includes a plurality of guide portions connected in sequence in the first direction.

[0018] At least some of the plurality of guide portions have a thickness that increases continuously in the second direction; or,

[0019] The thickness of some of the plurality of guide portions increases continuously in the second direction, and the thickness of other part of the plurality of guide portions does not change in the second direction; or,

[0020] The thickness of some of the plurality of guide portions in the second direction continuously increases, and the thickness of another portion of the plurality of guide portions in the second direction continuously decreases; or,

[0021] Some of the guide portions have thicknesses that continuously increase in the second direction, some of the guide portions have constant thicknesses in the second direction, and other of the guide portions have thicknesses that continuously decrease in the second direction.

[0022] The thickness of the guide member in the third direction first decreases and then increases, wherein the third direction is perpendicular to the second direction and perpendicular to the first direction.

[0023] Wherein, the laminated glass has an upper side and a lower side when installed on a vehicle, and on the side of the guide member facing away from the laminated glass, the field of view angle α of the light signal in the second direction satisfies: 0°≤α≤25°, and the field of view angle θ in the third direction satisfies: 0°≤θ≤90°, wherein the second direction is the direction from the upper side to the lower side, and the third direction is perpendicular to the second direction and perpendicular to the first direction.

[0024] The maximum angle αi between the light in the optical signal and the normal of the second surface in the second direction satisfies: αi≤45°, and the maximum angle θi between the light in the optical signal and the normal of the second surface in the third direction satisfies: θi≤45°.

[0025] The difference ΔT between the transmittance of the light signal incident on the second surface at the maximum angle αi or θi and the transmittance of the light signal incident on the second surface vertically satisfies: ΔT≤3%.

[0026] The viewing angle α′ of the light signal outside the vehicle in the second direction is at least 5° greater than the viewing angle α of the light signal on the side of the guide away from the laminated glass in the second direction.

[0027] The viewing angle θ' of the light signal outside the vehicle in the third direction is at least 5° greater than the viewing angle θ of the light signal on the side of the guide away from the laminated glass in the third direction.

[0028] Wherein, the laminated glass further has a non-signal transmission area, and the laminated glass comprises:

[0029] a first transparent substrate;

[0030] a second transparent substrate, the second transparent substrate being disposed relative to the first transparent substrate and away from the guide member; and

[0031] An intermediate bonding layer is disposed between the first transparent substrate and the second transparent substrate and is used to bond the first transparent substrate and the second transparent substrate. The intermediate bonding layer includes a first bonding layer at least disposed in the signal transmission area and a second bonding layer disposed in at least a portion of the non-signal transmission area.

[0032] Wherein, the transmittance of the first adhesive layer to the optical signal is greater than or equal to the transmittance of the second adhesive layer to the optical signal.

[0033] In a second aspect, an embodiment of the present application further provides a vehicle, the vehicle comprising:

[0034] The laminated glass assembly according to the first aspect; and

[0035] A vehicle body, wherein the vehicle body is used to carry the laminated glass assembly.

[0036] The embodiments of the present application provide a laminated glass assembly and a vehicle, wherein the laminated glass assembly includes laminated glass, a guide and a sensor, wherein the first surface of the guide adheres to the laminated glass in a signal transmission area, and the refractive index of the guide changes continuously in a first direction, thereby reducing the incident angle of the light signal at the laminated glass, thereby improving the transmittance of the light signal. Therefore, the laminated glass assembly of the embodiments of the present application improves the transmittance of the light signal through the guide with a gradually changing refractive index, thereby improving the detection effect of the laminated glass assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the structure of a vehicle provided in accordance with one embodiment of the present application.

[0039] Figure 2 This is a schematic structural diagram of a laminated glass assembly provided in one embodiment of the present application at a first viewing angle.

[0040] Figure 3 for Figure 2 A schematic three-dimensional structural diagram of a laminated glass assembly provided in an embodiment.

[0041] Figure 4 for Figure 2 A schematic diagram of the change in the refractive index of a guide member in a laminated glass assembly provided in an embodiment.

[0042] Figure 5 for Figure 3 A schematic structural diagram of a guide member in a laminated glass assembly provided in an embodiment.

[0043] Figure 6 for Figure 5 A schematic diagram of the change in refractive index of a plurality of guide portions in a first direction in a laminated glass assembly provided in an embodiment.

[0044] Figure 7 for Figure 5 A schematic structural diagram of a guide member in a laminated glass assembly provided in an embodiment including a first additive.

[0045] Figure 8 for Figure 5 A schematic structural diagram of a guide member in a laminated glass assembly provided in an embodiment including a second additive.

[0046] Fig. 9 for Figure 3 A schematic structural diagram of a guide member in a laminated glass assembly provided in an embodiment in another embodiment.

[0047] Fig.10 for Figure 2 A schematic structural diagram of a laminated glass assembly provided in an embodiment at a second viewing angle.

[0048] Fig.11 for Figure 3 A schematic structural diagram of a guide member in a laminated glass assembly provided in an embodiment in yet another embodiment.

[0049] Fig.12 for Fig.11 A schematic diagram of a change in the refractive index of a guide member in a laminated glass assembly in a first direction provided in an embodiment.

[0050] Fig.13 for Figure 2 A schematic diagram of the viewing angle of a light signal at a first viewing angle in a laminated glass assembly provided in an embodiment.

[0051] Fig.14 for Figure 2 A schematic diagram of the viewing angle of a light signal in a laminated glass assembly at a second viewing angle provided in an embodiment.

[0052] Fig.15 for Figure 2 A schematic structural diagram of laminated glass in a laminated glass assembly provided in an embodiment.

[0053] Fig.16 Schematic diagram of the laminated glass assembly provided in the present application in the first embodiment and the second embodiment.

[0054] Figure numbers: vehicle 1; laminated glass assembly 10; sensor 11; guide 12; second surface 123; first surface 124; guide portion 125; first additive 126; second additive 127; adhesive layer 128; laminated glass 13; signal transmission area 131; first transparent substrate 133; second transparent substrate 134; intermediate adhesive layer 135; first adhesive layer 1351; second adhesive layer 1352; upper side 136; lower side 137; vehicle body 20; optical signal L0; second direction D2; first direction D1; third direction D3. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0057] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] In the present invention, the refractive index is the refractive index of the transmitted light at a wavelength of 550 nm.

[0059] In the present invention, the transmittance of the optical signal is measured and calculated according to the standard ISO9050.

[0060] The present application embodiment provides a vehicle. Figure 1 The vehicle 1 includes a vehicle body 20 and a laminated glass assembly 10. The vehicle body 20 is used to carry the laminated glass assembly 10.

[0061] In this embodiment, the vehicle 1 can be but is not limited to a sedan, a multi-purpose vehicle (MPV), a sport / suburban utility vehicle (SUV), an off-road vehicle (ORV), a pickup truck, a van, a bus, a truck, etc.

[0062] The laminated glass assembly 10 can be, but is not limited to, installed on the front side of the vehicle body 20 for front detection of the vehicle 1, or installed on the rear side of the vehicle body 20 for rear detection of the vehicle 1, etc. The laminated glass assembly 10 is used to detect objects around the vehicle 1, identify obstacles or preset targets for the vehicle 1, etc., to assist the driving of the vehicle 1 and improve the safety and convenience of the driving of the vehicle 1. Among them, the laminated glass assembly 10 includes a sensor 11, and the sensor 11 is arranged inside the vehicle body 20. The optical signal emitted or / and received by the sensor 11 passes through the laminated glass 13. It should be noted that, Figure 1 Taking the laminated glass assembly 10 as an example, it is provided at the front side of the vehicle body 20. It can be understood that Figure 1 The installation position of the laminated glass assembly 10 in the embodiment of the present application is not limited.

[0063] The present application embodiment provides a laminated glass assembly 10. Figure 2 , Figure 3 and Figure 4 In this embodiment, the laminated glass assembly 10 includes a laminated glass 13, a guide 12 and a sensor 11. The laminated glass 13 has a signal transmission area 131. The signal transmission area 131 is used for the transmission of optical signals. The guide 12 has a first surface 124 that is attached to the laminated glass 13, and a second surface 123 that is arranged opposite to the first surface 124. The projection of the guide 12 on the laminated glass 13 covers the signal transmission area 131. The guide 12 is used to change the transmission path of the optical signal. The refractive index of the guide 12 changes continuously in the first direction D1. The first direction D1 is the thickness direction of the laminated glass 13. The sensor 11 is installed inside the vehicle 1, and the sensor 11 is arranged toward the guide 12, and the guide 12 is located between the laminated glass 13 and the sensor 11; specifically, the sensor 11 can be fixedly installed on the laminated glass 13 by a bracket or the like, or can be fixedly installed on the vehicle body 20 by a bracket or the like. The optical signal emitted by the sensor 11 passes through the guide member 12 and the laminated glass 13 in sequence, and / or the optical signal received by the sensor 11 passes through the laminated glass 13 and the guide member 12 in sequence.

[0064] The laminated glass assembly 10 provided in the present application is applied to a vehicle 1, and is used to detect surrounding environment information for the vehicle 1, so as to assist the vehicle 1 in driving. The laminated glass 13 can be used as a front windshield, a rear windshield, or a side window glass; not limited thereto, the laminated glass 13 can also be used as an A-pillar exterior panel glass, a B-pillar exterior panel glass, or a C-pillar exterior panel glass, etc.

[0065] In this embodiment, the sensor 11 is used to emit and / or receive a light signal L0, the wavelength of the light signal L0 is in the range of 380nm to 1650nm or 8μm to 12μm, and specific examples include visible light cameras (380nm to 780nm), near-infrared cameras (780nm to 1650nm), lidars (850nm, 905nm, 1550nm), thermal imagers (8μm to 12μm), etc., which are used for imaging, ranging and positioning.

[0066] The optical signal L0 may be emitted by the sensor 11, incident from the second surface 123, sequentially passing through the guide 12 and the signal transmission area 131 in the laminated glass 13, and emitted from the surface of the laminated glass 13 away from the guide 12. The optical signal L0 may also be incident from the outside of the vehicle to the surface of the laminated glass 13 away from the guide 12, sequentially passing through the signal transmission area 131 in the laminated glass 13 and the guide 12, and emitted from the second surface 123 to be received by the sensor 11. In order to ensure that the sensor 11 can work normally and improve the detection accuracy, it is preferred that the transmittance of the signal transmission area 131 in the laminated glass 13 to the optical signal L0 is greater than or equal to 80%, more preferably greater than or equal to 85%, or even greater than or equal to 90%; and the transmittance of the guide 12 to the optical signal L0 is greater than the transmittance of the signal transmission area 131 in the laminated glass 13 to the optical signal L0.

[0067] Next, the laminated glass assembly 10 will be schematically described with the optical signal L0 being emitted from the sensor 11 .

[0068] In this embodiment, the signal transmission area 131 is arranged corresponding to the guide 12, that is, the first surface 124 of the guide 12 is attached to the surface of the laminated glass 13 in the signal transmission area 131 close to the guide 12. The refractive index of the guide 12 changes continuously in the first direction D1, so that the guide 12 has good refractive power, so that the light signal L0 is refracted multiple times in the guide 12, so as to reduce the incident angle of the light signal L0 when it is incident on the laminated glass 13, thereby improving the transmittance of the light signal L0 in the laminated glass 13.

[0069] In summary, the embodiment of the present application provides a laminated glass assembly 10, the laminated glass assembly 10 includes a laminated glass 13, a guide 12 and a sensor 11, the first surface 124 of the guide 12 is attached to the laminated glass 13 in the signal transmission area 131, the refractive index of the guide 12 changes continuously in the first direction D1, and the incident angle of the light signal L0 at the laminated glass 13 is reduced, thereby improving the transmittance of the light signal L0. Therefore, the laminated glass assembly 10 provided in the embodiment of the present application improves the transmittance of the light signal L0 through the guide 12 with a gradually changing refractive index, thereby improving the detection effect of the laminated glass assembly 10.

[0070] Please refer to Figure 3 , Figure 5 and Figure 6 In this embodiment, the guide member 12 includes a plurality of guide portions 125 connected in sequence in the first direction D1, and the refraction of the plurality of guide portions 125 in the first direction D1 increases first and then decreases. It should be noted that, Figure 5 The number of the guide portions 125 is 5 for illustration, and the number of the guide portions 125 is not limited.

[0071] In this embodiment, the refraction of the multiple guide parts 125 in the first direction D1 first increases and then decreases. On the one hand, the guide member 12 has good refractive power to deflect the optical signal L0. On the other hand, the optical signal L0 is prevented from being reflected at the interface of the second surface 123 due to the large difference in refractive index between the air and the guide part 125 of the guide member 12 on the second surface 123, and the optical signal L0 is prevented from being reflected at the interface of the first surface 124 and the laminated glass 13 due to the large difference in refractive index between the guide part 125 of the guide member 12 on the first surface 124 and the laminated glass 13, thereby improving the transmittance of the optical signal L0 in the guide member 12 and the laminated glass 13.

[0072] Optionally, the refraction of the multiple guiding parts 125 in the first direction D1 first increases and then decreases, and the refractive index of the multiple guiding parts 125 in the first direction D1 changes symmetrically, which can optimize the light path deflection, so that the refraction of the optical signal L0 by the multiple guiding parts 125 is smoother, thereby improving the signal quality of the optical signal L0.

[0073] Please refer again Figure 3 , Figure 5 and Figure 6In this embodiment, the difference between the refractive index of the guide portion 125 bonded to the laminated glass 13 among the plurality of guide portions 125 and the refractive index of the laminated glass 13 is less than or equal to 0.03.

[0074] In this embodiment, in order to avoid interface reflection of the light signal L0 due to excessive change in the refractive index at the junction when the light signal L0 is incident on the laminated glass 13 via the guide member 12, the refractive index of the guide portion 125 bonded to the laminated glass 13 among the multiple guide portions 125 is set to a difference less than or equal to 0.03 with the refractive index of the laminated glass 13.

[0075] Please refer again Figure 3 , Figure 5 and Figure 6 In this embodiment, the materials of the plurality of guide portions 125 are the same or different, and the difference △n in the refractive index between two adjacent guide portions 125 satisfies: △n≤0.5.

[0076] In this embodiment, in the guide member 12, the difference △n in the refractive index of the two adjacent guide portions 125 satisfies: △n≤0.5, which can prevent the light signal L0 from being reflected at the interface at the junction of the two adjacent guide portions 125, thereby improving the transmittance of the light signal L0 and optimizing the optical path deflection of the light signal L0. Optionally, the difference △n in the refractive index of the two adjacent guide portions 125 satisfies: △n≤0.3, or △n≤0.1.

[0077] In addition, the number of increasing refractive indexes of two adjacent guide portions 125 in the first direction D1 among the multiple guide portions 125 is equal to the number of decreasing refractive indexes, that is, the number of guide portions 125 arranged from the lowest refractive index to the highest refractive index in the multiple guide portions 125 in the first direction D1 is equal to the number of guide portions 125 arranged from the highest refractive index to the lowest refractive index, so that the refractive index changes of the multiple guide portions 125 are approximately symmetrically arranged, thereby reducing the refractive index difference, and further optimizing the optical path deflection of the optical signal L0. Optionally, the number of guide portions 125 arranged from the lowest refractive index to the highest refractive index in the multiple guide portions 125 in the first direction D1 is equal to the number of guide portions 125 arranged from the highest refractive index to the lowest refractive index, and with the guide portion 125 with the highest refractive index as the center, the guide portions 125 of other refractive indices are symmetrically distributed, which can further optimize the optical path deflection of the optical signal L0.

[0078] In one embodiment, the guide parts 125 are made of different materials, and the guide member 12 can be made of materials with refractive indexes from low to high and then from high to low in the first direction D1. The material of the guide parts 125 can be, but is not limited to, inorganic materials (e.g., glass, quartz, silicon nitride, or sulfur-selenium compounds, etc.) or organic materials (e.g., methyl methacrylate or trifluoroethyl methacrylate, etc.).

[0079] In another embodiment, please refer to Figure 7 and Figure 8 , when the materials of the plurality of guide portions 125 are the same, the guide member 12 further includes a first additive 126 dispersed in the plurality of guide portions 125. The concentration of the first additive 126 in the first direction D1 first increases and then decreases. The refractive index of the first additive 126 is higher than the refractive index of the guide portion 125. Alternatively, the guide member 12 further includes a second additive 127 dispersed in the plurality of guide portions 125. The concentration of the second additive 127 in the first direction D1 first decreases and then increases. The refractive index of the second additive 127 is lower than the refractive index of the guide portion 125.

[0080] In this embodiment, additives may be provided in different guide portions 125 in the guide member 12 to change the refractive index of the plurality of guide portions 125, so that the refractive index of the plurality of guide portions 125 increases first and then decreases in the first direction D1. The material of the plurality of guide portions 125 may be, but is not limited to, inorganic matter (e.g., glass, quartz, silicon nitride, or sulfur-selenium compounds, etc.) or organic matter (e.g., methyl methacrylate or trifluoroethyl methacrylate, etc.), etc.

[0081] Specifically, the additives in the plurality of guides 125 can be realized by an ion exchange process, and the refractive index of the plurality of guides 125 can be adjusted by the polarization ability and concentration of the ions. In one embodiment, in the first direction D1, the first additive 126 whose concentration increases first and then decreases is added to the plurality of guides 125 in sequence, so that the refraction of the guide 12 in the first direction D1 increases first and then decreases. Wherein, the refractive index of the first additive 126 is higher than the refractive index of the plurality of guides 125, and the first additive 126 includes at least one of Cs+ or Pb2+. In another embodiment, in the first direction D1, the second additive 127 whose concentration decreases first and then increases is added to the plurality of guides 125 in sequence, so that the refraction of the guide 12 in the first direction D1 increases first and then decreases. Wherein, the refractive index of the second additive 127 is lower than the refractive index of the plurality of guides 125, and the second additive 127 includes at least one of alkali metals such as K+ and Na+. In other embodiments, a mixture of the first additive 126 and the second additive 127 may be added to the plurality of guide portions 125 , as long as the refraction of the guide member 12 in the first direction D1 can be increased first and then decreased.

[0082] Please refer again Figure 2 and Figure 3 In this embodiment, the laminated glass 13 has an upper side 136 and a lower side 137 when installed in the vehicle 1. The thickness of the guide member 12 increases continuously in the second direction D2. The second direction D2 is the direction from the upper side 136 to the lower side 137.

[0083] The thickness of the guide member 12 increases continuously in the second direction D2, so that the angle between the first surface 124 and the horizontal plane is smaller than the angle between the laminated glass 13 and the horizontal plane, so that the incident angle of the light signal L0 on the second surface 123 is smaller than that directly incident on the laminated glass 13, thereby improving the transmittance of the light signal L0.

[0084] In addition, since the thickness of the guide member 12 in the second direction D2 continuously increases, the refraction angle of the guide member 12 to the light signal L0 in the second direction D2 continuously increases, so that the refraction angle of the light signal L0 of the portion of the guide member 12 close to the upper side 136 is larger than that of the portion of the guide member 12 close to the lower side 137, thereby improving the field of view angle of the light signal L0 emitted from the signal transmission area 131 through the laminated glass 13, thereby expanding the actual detection field of view range of the sensor 11 in the second direction D2. The field of view angle of the light signal L0 in the second direction D2 corresponds to the vertical field of view (VFOV) of the sensor 11.

[0085] Please refer to Fig. 9 In this embodiment, the guide member 12 includes a plurality of guide portions 125 connected in sequence in the first direction D1, and at least some of the guide portions 125 have a thickness that continuously increases in the second direction D2. Alternatively, some of the guide portions 125 have a thickness that continuously increases in the second direction D2, and the thickness of the other guide portions 125 in the second direction D2 remains unchanged. Alternatively, some of the guide portions 125 have a thickness that continuously increases in the second direction D2, and the thickness of the other guide portions 125 in the second direction D2 continues to decrease. Alternatively, some of the guide portions 125 have a thickness that continuously increases in the second direction D2, and the thickness of the other guide portions 125 in the second direction D2 continues to decrease. It should be noted that Fig. 9 It is illustrated that the thickness of some of the plurality of guide portions 125 in the second direction D2 continuously increases, and the thickness of other parts of the plurality of guide portions 125 in the second direction D2 remains unchanged. It can be understood that Fig. 9 The multiple guide portions 125 in the embodiment of the present application do not limit the multiple guide portions 125 in the embodiment of the present application.

[0086] In this embodiment, the thickness of each of the plurality of guide portions 125 in the second direction D2 may be changed arbitrarily, as long as the thickness of the guide member 12 in the second direction D2 is continuously increased.

[0087] Please refer to Fig.10In this embodiment, the thickness of the guide member 12 in the third direction D3 decreases first and then increases. The third direction D3 is perpendicular to the second direction D2 and perpendicular to the first direction D1. It should be noted that: Fig.10 The second viewing angle is a viewing angle perpendicular to a plane formed by the first direction and the third direction.

[0088] In this embodiment, in the third direction D3, the thickness of the guide member 12 in the third direction D3 first decreases and then increases, so that after the light signal L0 is incident on the guide member 12, the light in the light signal L0 is deflected more on both sides of the guide member 12 than in the middle of the guide member 12, so that the field of view angle of the light signal L0 on the side of the laminated glass 13 away from the guide member 12 is greater than the field of view angle of the light signal L0 on the side of the guide member 12 away from the laminated glass 13, thereby expanding the actual detection field of view of the sensor 11 in the third direction D3. The third direction D3 is perpendicular to the second direction D2 and perpendicular to the first direction D1. The field of view angle of the light signal L0 in the third direction D3 corresponds to the horizontal field of view (HFOV) of the sensor 11.

[0089] Optionally, the thickness of the guide member 12 in the third direction D3 decreases first and then increases, and presents a symmetrical structure, which further optimizes the optical path deflection of the optical signal L0 in the guide member 12 .

[0090] Please refer to Figure 3 , Fig.11 and Fig.12 In this embodiment, the guide member 12 further includes a plurality of adhesive layers 128 , and the plurality of adhesive layers 128 are used to bond the plurality of guide portions 125 .

[0091] In this embodiment, the refractive index of the multiple guide parts 125 first increases and then decreases in the first direction D1. The multiple guide parts 125 are bonded together by the multiple bonding layers 128 to form the guide member 12, so that the refractive index change design of the guide member 12 is more flexible and diverse.

[0092] In addition, the transmittance of the bonding layer 128 to the optical signal L0 is greater than 90%, and the refractive index na of the bonding layer 128 satisfies: 0.7nl≤na≤1.3nr. Wherein, nl is the refractive index of the guide portion 125 with a lower refractive index among the two adjacent guide portions 125 bonded by the bonding layer 128, and nr is the refractive index of the guide portion 125 with a higher refractive index among the two adjacent guide portions 125 bonded by the bonding layer 128.

[0093] The transmittance of the adhesive layer 128 to the optical signal L0 is greater than 90%, which can prevent the adhesive layer 128 from hindering the transmission of the optical signal L0. The refractive index na of the adhesive layer 128 satisfies: 0.7nl≤na≤1.3nr, which can prevent the optical signal L0 from being reflected at the interface due to excessive refractive index change at the junction of the adhesive layer 128 and the guide portion 125, thereby improving the transmittance of the optical signal L0 in the guide 12.

[0094] Please refer to Fig.13 and Fig.14 In this embodiment, the laminated glass 13 has an upper side 136 and a lower side 137 when installed in the vehicle 1. On the side of the guide 12 away from the laminated glass 13, the field of view angle α of the light signal L0 in the second direction D2 satisfies: 0°≤α≤25°, and the field of view angle θ in the third direction D3 satisfies: 0°≤θ≤90°. The second direction D2 is the direction from the upper side 136 to the lower side 137. The third direction D3 is perpendicular to the second direction D2 and perpendicular to the first direction D1.

[0095] In this embodiment, on the side of the guide 12 away from the laminated glass 13, the field of view angle α of the light signal L0 in the second direction D2 satisfies: 0°≤α≤25°, optionally, 0°≤α≤15°. Due to the deflection of the guide 12, the field of view angle of the light signal L0 located outside the vehicle in the second direction D2 is greater than the field of view angle α of the light signal L0 in the second direction D2 on the side of the guide 12 away from the laminated glass 13, thereby expanding the actual detection field of view of the sensor 11 in the second direction D2. Preferably, the field of view angle of the light signal L0 located outside the vehicle in the second direction D2 is at least 5° greater than the field of view angle α of the light signal L0 in the second direction D2 on the side of the guide 12 away from the laminated glass 13, more preferably at least 10° greater.

[0096] In this embodiment, on the side of the guide member 12 away from the laminated glass 13, the field of view angle θ of the light signal L0 in the third direction D3 satisfies: 0°≤θ≤90°, optionally, 0°≤θ≤60°. Due to the deflection of the guide member 12, the field of view angle θ of the light signal L0 located outside the vehicle in the third direction D3 is greater than the field of view angle θ of the light signal L0 in the third direction D3 on the side of the guide member 12 away from the laminated glass 13, thereby expanding the actual detection field of view of the sensor 11 in the third direction D3. Preferably, the field of view angle of the light signal L0 located outside the vehicle in the third direction D3 is at least 5° greater than the field of view angle θ of the light signal L0 in the third direction D3 on the side of the guide member 12 away from the laminated glass 13, more preferably at least 10° greater, further preferably at least 20° greater, and even at least 30° greater.

[0097] Please refer again Fig.13 and Fig.14 In this embodiment, the maximum angle αi between the light in the optical signal L0 and the normal of the second surface 123 in the second direction D2 satisfies: αi≤45°. The maximum angle θi between the light in the optical signal L0 and the normal of the second surface 123 in the third direction D3 satisfies: θi≤45°.

[0098] In this embodiment, the maximum angle αi between the light in the optical signal L0 and the normal of the second surface 123 in the second direction D2 satisfies: αi≤45° (see Fig.13 ), to avoid too low transmittance of the optical signal L0 on the second surface 123, optionally, αi≤30°. The maximum angle θi between the light in the optical signal L0 and the second surface 123 in the third direction D3 satisfies: θi≤45° (please refer to Fig.14 ), to avoid too low transmittance of the optical signal L0 on the second surface 123, optionally, θi≤30°.

[0099] In addition, the difference ΔT between the transmittance of the light signal L0 incident on the second surface 123 at the maximum angle αi or θi and the transmittance of the light signal L0 incident on the second surface 123 vertically satisfies: ΔT≤3%, so as to ensure the transmittance of the light signal L0 in the guide 12 .

[0100] Please refer to Fig.15In this embodiment, the laminated glass 13 further has a non-signal transmission area 132. The laminated glass 13 includes a first transparent substrate 133, a second transparent substrate 134 and an intermediate bonding layer 135. The second transparent substrate 134 is arranged away from the guide member 12 relative to the first transparent substrate 133, that is, the first transparent substrate 133 is used as an inner glass plate arranged near the inside of the vehicle, and the second transparent substrate 134 is used as an outer glass plate arranged near the outside of the vehicle. The intermediate bonding layer 135 is arranged between the first transparent substrate 133 and the second transparent substrate 134, and is used to bond the first transparent substrate 133 and the second transparent substrate 134.

[0101] In this embodiment, the intermediate adhesive layer 135 includes a first adhesive layer 1351 disposed at least in the signal transmission area 131 and a second adhesive layer 1352 disposed at least in a portion of the non-signal transmission area 132. The first adhesive layer 1351 is disposed at least in the signal transmission area 131, and the second adhesive layer 1352 is located in the non-signal transmission area 132.

[0102] The material of the first adhesive layer 1351 can be the same as the material of the second adhesive layer 1352, and the transmittance of the first adhesive layer 1351 to the optical signal L0 is equal to the transmittance of the second adhesive layer 1352 to the optical signal L0. The first adhesive layer 1351 and the second adhesive layer 1352 are an integral structure, and the material of the intermediate adhesive layer 135 can be polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), thermoplastic polyurethane elastomer (TPU) or polyolefin elastomer (POE), etc.

[0103] Since the second adhesive layer 1352 will not interfere with the transmission of the optical signal L0 in the signal transmission area 131, in consideration of cost saving, the material of the first adhesive layer 1351 can be different from the material of the second adhesive layer 1352, the transmittance of the first adhesive layer 1351 to the optical signal L0 is greater than the transmittance of the second adhesive layer 1352 to the optical signal L0, and the first adhesive layer 1351 can be fused and spliced ​​with the second adhesive layer 1352 to form the intermediate adhesive layer 135. For example, for a laser radar with a wavelength of 1550nm, the material of the first adhesive layer 1351 is selected from ethylene-vinyl acetate copolymer (EVA), thermoplastic polyurethane elastomer (TPU) or polyolefin elastomer (POE), etc., and the material of the second adhesive layer 1352 is selected from polyvinyl butyral (PVB).

[0104] Please refer to Fig.15 and Fig.16Next, a specific embodiment of the laminated glass assembly 10 is described. The visual angle α of the optical signal L0 emitted by the sensor 11 in the second direction D2 is 14°, and the visual angle θ in the third direction D3 is 90°.

[0105] Embodiment 1:

[0106] Sensor 11: A laser radar is selected, and the wavelength of the light signal L0 emitted and received is 905nm;

[0107] Guide 12: the refractive index in the first direction D1 varies from 1.5-1.8-2.1-1.8-1.5;

[0108] Laminated glass 13: The first transparent substrate 133 and the second transparent substrate 134 are both 2.1 mm thick ultra-transparent glass (i.e., ultra-white glass), and the first adhesive layer 1351 and the second adhesive layer 1352 are both 0.76 mm thick PVB. The angle between the laminated glass 13 and the horizontal plane is 30°.

[0109] After testing, the visual angle α' of the optical signal L0 emitted through the signal transmission area 131 in the second direction D2 is 28°, α'-α=14°; the visual angle θ' in the third direction D3 is 130°, θ'-θ=40°. It can be concluded that the laminated glass assembly 10 provided in the present application can improve the actual detection visual angle of the optical signal L0, thereby expanding the detection range.

[0110] Measured and calculated according to ISO9050;

[0111] The transmittance of the optical signal L0 after passing through the lower area of ​​the guide member 12 and the signal transmission area 131 in the second direction D2 is 83%;

[0112] The transmittance of the optical signal L0 after passing through the central area of ​​the guide 12 and the signal transmission area 131 in sequence is 88.7%;

[0113] The transmittance of the optical signal L0 after passing through the side area of ​​the guide member 12 and the signal transmission area 131 in the third direction D3 is 81.4%;

[0114] It can be seen that the laminated glass assembly 10 provided in the present application can improve the transmittance of the optical signal L0 to be greater than 80%, which meets the detection requirements of the 905nm laser radar.

[0115] Embodiment 2:

[0116] Sensor 11: A laser radar is selected, and the wavelength of the light signal L0 emitted and received is 1550nm;

[0117] Guide 12: the refractive index in the first direction D1 varies from 1.5-1.8-2.1-1.8-1.5;

[0118] Laminated glass 13: The first transparent substrate 133 and the second transparent substrate 134 are both 2.1 mm thick ultra-transparent glass (i.e., ultra-white glass), the first adhesive layer 1351 is made of 0.76 mm thick EVA, and the second adhesive layer 1352 is made of 0.76 mm thick PVB. The angle between the laminated glass 13 and the horizontal plane is 30°.

[0119] After testing, the visual angle α' of the optical signal L0 emitted through the signal transmission area 131 in the second direction D2 is 28°, α'-α=14°; the visual angle θ' in the third direction D3 is 130°, θ'-θ=40°. It can be concluded that the laminated glass assembly 10 provided in the present application can improve the actual detection visual angle of the optical signal L0, thereby expanding the detection range.

[0120] Measured and calculated according to ISO9050;

[0121] The transmittance of the optical signal L0 after passing through the lower area of ​​the guide member 12 and the signal transmission area 131 in the second direction D2 is 82.7%;

[0122] The transmittance of the optical signal L0 after passing through the central area of ​​the guide 12 and the signal transmission area 131 in sequence is 88.2%;

[0123] The transmittance of the optical signal L0 after passing through the side area of ​​the guide member 12 and the signal transmission area 131 in the third direction D3 is 80.7%;

[0124] It can be seen that the laminated glass assembly 10 provided in the present application can improve the transmittance of the optical signal L0 to be greater than 80%, which meets the detection requirements of the 1550nm laser radar.

[0125] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. A laminated glass assembly, characterized in that: The laminated glass assembly comprises: Laminated glass, wherein the laminated glass has a signal transmission area, and the signal transmission area is used for transmitting optical signals; a guide member, the guide member having a first surface attached to the laminated glass and a second surface disposed opposite to the first surface, the projection of the guide member on the laminated glass covering the signal transmission area, the guide member being used to change the transmission path of the optical signal, the refractive index of the guide member continuously changing in a first direction, wherein the first direction is a thickness direction of the laminated glass; and A sensor, wherein the sensor is installed inside the vehicle, wherein a light signal emitted by the sensor passes through the guide member and the laminated glass in sequence, and / or a light signal received by the sensor passes through the laminated glass and the guide member in sequence; The laminated glass has an upper side and a lower side when installed in a vehicle, and the thickness of the guide member increases continuously in a second direction, wherein the second direction is a direction from the upper side to the lower side, wherein the guide member includes a plurality of guide portions connected in sequence in the first direction, and the refractive index of the plurality of guide portions in the first direction increases first and then decreases, and a difference △n in the refractive index of two adjacent guide portions satisfies: △n≤0.5; The material of the guide member includes at least one of glass, quartz, silicon nitride, sulfur-selenium compounds, methyl methacrylate or trifluoroethyl methacrylate.

2. The laminated glass assembly according to claim 1, characterized in that: The materials of the plurality of guide parts are the same or different.

3. The laminated glass assembly according to claim 2, characterized in that: When the materials of the plurality of guide parts are the same, the guide member further comprises a first additive dispersed in the plurality of guide parts, the concentration of the first additive first increases and then decreases in the first direction, wherein the refractive index of the first additive is higher than the refractive index of the guide part; Alternatively, the guide member further comprises a second additive dispersed in the plurality of guide portions, the concentration of the second additive first decreases and then increases in the first direction, wherein the refractive index of the second additive is lower than the refractive index of the guide portion.

4. The laminated glass assembly according to claim 2, wherein: The number of increasing refractive indexes of two adjacent guide portions in the first direction among the plurality of guide portions is equal to the number of decreasing refractive indexes.

5. The laminated glass assembly according to claim 1, wherein: A difference between a refractive index of a guide portion of the plurality of guide portions that is bonded to the laminated glass and a refractive index of the laminated glass is less than or equal to 0.

03.

6. The laminated glass assembly according to claim 1, wherein: The guide member further includes a plurality of adhesive layers, and the plurality of adhesive layers are used to bond the plurality of guide parts.

7. The laminated glass assembly according to claim 6, characterized in that: The transmittance of the adhesive layer to the optical signal is greater than 90%, and the refractive index na of the adhesive layer satisfies: 0.7nl≤na≤1.3nr, wherein nl is the refractive index of the guiding part with a lower refractive index among two adjacent guiding parts bonded by the adhesive layer, and nr is the refractive index of the guiding part with a higher refractive index among two adjacent guiding parts bonded by the adhesive layer.

8. The laminated glass assembly according to claim 1, wherein: At least some of the plurality of guide portions have a thickness that increases continuously in the second direction; or, The thickness of some of the plurality of guide portions increases continuously in the second direction, and the thickness of other part of the plurality of guide portions does not change in the second direction; or, The thickness of some of the plurality of guide portions in the second direction continuously increases, and the thickness of another portion of the plurality of guide portions in the second direction continuously decreases; or, Some of the guide portions have thicknesses that continuously increase in the second direction, some of the guide portions have constant thicknesses in the second direction, and other of the guide portions have thicknesses that continuously decrease in the second direction.

9. The laminated glass assembly according to claim 8, wherein: The thickness of the guide member in the third direction first decreases and then increases, wherein the third direction is perpendicular to the second direction and perpendicular to the first direction.

10. The laminated glass assembly according to claim 1, wherein: The laminated glass has an upper side and a lower side when installed in a vehicle, and on the side of the guide member facing away from the laminated glass, the field of view angle α of the light signal in the second direction satisfies: 0°≤α≤25°, and the field of view angle θ in the third direction satisfies: 0°≤θ≤90°, wherein the second direction is the direction from the upper side to the lower side, and the third direction is perpendicular to the second direction and perpendicular to the first direction.

11. The laminated glass assembly according to claim 10, wherein: The maximum angle αi between the light in the optical signal and the normal of the second surface in the second direction satisfies: αi≤45°, and the maximum angle θi between the light in the optical signal and the normal of the second surface in the third direction satisfies: θi≤45°.

12. The laminated glass assembly according to claim 11, wherein: A difference ΔT between a transmittance of the light signal incident on the second surface at a maximum angle αi or θi and a transmittance of the light signal incident on the second surface vertically satisfies: ΔT≤3%.

13. The laminated glass assembly according to claim 10, wherein: A viewing angle α′ of the light signal located outside the vehicle in the second direction is at least 5° greater than a viewing angle α of the light signal on a side of the guide member facing away from the laminated glass in the second direction.

14. The laminated glass assembly according to claim 10, wherein: A viewing angle θ′ of the light signal located outside the vehicle in the third direction is at least 5° greater than a viewing angle θ of the light signal located on a side of the guide member facing away from the laminated glass in the third direction.

15. The laminated glass assembly according to claim 1, wherein: The laminated glass also has a non-signal transmission area, and the laminated glass includes: a first transparent substrate; a second transparent substrate, the second transparent substrate being disposed relative to the first transparent substrate and away from the guide member; and An intermediate bonding layer is disposed between the first transparent substrate and the second transparent substrate and is used to bond the first transparent substrate and the second transparent substrate. The intermediate bonding layer includes a first bonding layer at least disposed in the signal transmission area and a second bonding layer disposed in at least a portion of the non-signal transmission area.

16. The laminated glass assembly according to claim 15, wherein: The transmittance of the first adhesive layer to the optical signal is greater than or equal to the transmittance of the second adhesive layer to the optical signal.

17. A vehicle, characterized in that: The vehicle comprises: The laminated glass assembly according to any one of claims 1 to 16; and A vehicle body, wherein the vehicle body is used to carry the laminated glass assembly.

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