Vehicle window assembly and vehicle

Abstract

The application provides a vehicle window glass assembly and a vehicle. The vehicle window glass assembly comprises a vehicle window glass, a bracket and a laser radar module; the vehicle window glass comprises an outer glass layer, an adhesive layer and an inner glass layer which are sequentially stacked, the bracket is arranged on a side of the inner glass layer away from the adhesive layer; the laser radar module comprises a transmitting module and a receiving module, the transmitting module is arranged on the bracket, and the receiving module is arranged between the outer glass layer and the inner glass layer. The application splits the transmitting module and the receiving module of the laser radar module, installs the transmitting module on the bracket and installs the receiving module on the vehicle window glass, so that the space occupied by the laser radar module is reduced, the problems of large overall volume and large weight of the traditional laser radar module are solved, the near-infrared high-transmittance window of the traditional laser radar module can be omitted, and the volume miniaturization, heat dissipation facilitation, further improvement of transmittance and cost saving are achieved.

Description

Technical Field

[0001] This application belongs to the field of automotive glass technology, specifically relating to a window glass assembly and vehicle equipped with lidar. Background Technology

[0002] The commonly used solution for integrated LiDAR systems is to directly integrate the entire LiDAR module onto the inner surface of the windshield. The detection signal emitted by the LiDAR module passes through a near-infrared high-transmittance window and penetrates the windshield for detection. A typical LiDAR module includes a transmitting module, a receiving module, a scanning module, and a control module, all integrated within the module's housing. However, this design results in a large and heavy LiDAR module, leading to drawbacks such as obstructed field of view, difficulty in integrating with other sensors, higher noise levels, and even safety hazards. Furthermore, considering product sealing and safety, the near-infrared high-transmittance window of the LiDAR module itself cannot be omitted, which attenuates the transmission and reception of the detection signal to some extent. Summary of the Invention

[0003] In view of this, the first aspect of this application provides a vehicle window glass assembly, which includes a vehicle window glass, a bracket, and a lidar module;

[0004] The vehicle window glass includes an outer glass layer, an adhesive layer, and an inner glass layer stacked in sequence, and the bracket is installed on the side of the inner glass layer away from the adhesive layer;

[0005] The lidar module includes a transmitting module and a receiving module. The transmitting module is used to transmit a detection signal to the object being measured, and the receiving module is used to receive the detection signal reflected back by the object being measured.

[0006] The transmitting module is mounted on the bracket, and the receiving module is mounted between the outer glass layer and the inner glass layer.

[0007] The receiving module includes a light-transmitting part and a receiving part, with the receiving part arranged around the outer periphery of the light-transmitting part. The detection signal emitted by the transmitting module passes through the light-transmitting part and the window glass to reach the object under test. The detection signal reflected back by the object under test passes through the outer glass layer and is received by the receiving part.

[0008] The ratio of the area s1 of the light-transmitting part to the area s2 of the receiving part, s1 / s2, ranges from 1 / 2 to 1 / 4.

[0009] The lidar module further includes a scanning module, which is used to control the transmission direction of the detection signal to achieve detection within the field of view of the lidar module. The scanning module is mounted on the bracket and is separately set from the transmitting module.

[0010] The scanning module includes a first reflection group and a second reflection group. The detection signal emitted by the transmitting module is reflected sequentially by the first reflection group and the second reflection group, and then passes through the light-transmitting part and the window glass to reach the object under test. The detection signal reflected back by the object under test passes through the outer glass layer and is received by the receiving part.

[0011] In this configuration, at least one of the first reflective group and the second reflective group is capable of movement.

[0012] The first reflective group includes a first reflector, and the second reflective group includes a second reflector. The detection signal emitted by the transmitting module is reflected sequentially by the first reflector and the second reflector, then passes through the light-transmitting part and the window glass to reach the object under test. The detection signal reflected back by the object under test passes through the outer glass layer and is received by the receiving part.

[0013] The second reflector rotates under the control of the control module.

[0014] The receiving module includes a first receiving module and a second receiving module. The first receiving module includes the light-transmitting part and the receiving part, and the first receiving module is installed between the outer glass layer and the inner glass layer. The transmitting module and the second receiving module are integrated into one unit, and the second receiving module is installed on the bracket.

[0015] The first reflector and the second reflector are capable of movement under the control of the control module.

[0016] Along the arrangement direction from the outer glass layer to the inner glass layer, the adhesive layer includes a first sub-layer, a second sub-layer, and a third sub-layer stacked sequentially. The second sub-layer is provided with mounting holes that penetrate the second sub-layer and extend toward the surface of the first sub-layer and toward the surface of the third sub-layer. The receiving module is disposed in the mounting holes.

[0017] The outer glass layer has a first surface and a second surface opposite to each other, and the inner glass layer has a third surface and a fourth surface opposite to each other. The first surface is the outer surface of the vehicle window glass, and the fourth surface is the inner surface of the vehicle window glass.

[0018] The vehicle window glass has a signal transmission zone for the detection signal to pass through, the signal transmission zone having a transmittance of at least 85% for the incident detection signal.

[0019] The vehicle window glass also includes a heat insulation layer, which makes the total solar transmittance of the vehicle window glass less than or equal to 55%, and the heat insulation layer avoids the signal transmission area; the heat insulation layer is disposed on the second surface, or on the third surface, or in the adhesive layer.

[0020] The vehicle window glass further includes an anti-reflective layer, which is disposed on the inner surface and at least covers the signal transmission area. The transmittance of the signal transmission area with the anti-reflective layer to the incident detection signal is at least 3% higher than that of the signal transmission area without the anti-reflective layer to the incident detection signal.

[0021] The inner glass layer has a through hole located within the signal transmission area, allowing the detection signal to pass through the through hole.

[0022] The vehicle window glass also includes a visible light cut-off layer that covers the signal transmission area; the visible light transmittance of the signal transmission area having the visible light cut-off layer is less than or equal to 1%, and has a transmittance of at least 85% for the incident detection signal;

[0023] The visible light blocking layer is disposed on the second surface, or on the third surface, or on the fourth surface, or in the adhesive layer.

[0024] A second aspect of this application provides a vehicle, comprising:

[0025] Body; and

[0026] As provided in the first aspect of this application, the window glass assembly is disposed on the vehicle body.

[0027] The vehicle window glass assembly and vehicle provided in this application, by separating the transmitting and receiving modules of the LiDAR module, with the transmitting module mounted on a bracket and the receiving module mounted on the window glass, reduce the space occupied by the LiDAR module, solving the problems of large overall size and weight of traditional LiDAR modules. Furthermore, it eliminates the need for the near-infrared high-transmittance window of traditional LiDAR modules, achieving miniaturization, improved heat dissipation, better transmittance, and cost savings. Simultaneously, it also reduces the difficulty of integrating the LiDAR module with other sensors. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0029] Figure 1 This is a schematic diagram of the structure of the lidar module in the first embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the structure of the lidar module in the second embodiment of this application.

[0031] Figure 3 This is a schematic diagram of the window glass assembly in the first embodiment of this application.

[0032] Figure 4 This is a schematic diagram of the window glass assembly in the second embodiment of this application.

[0033] Figure 5 This is a schematic diagram of the window glass assembly in the third embodiment of this application.

[0034] Figure 6 This is a schematic diagram of the window glass assembly in the fourth embodiment of this application.

[0035] Figure 7 This is a schematic diagram of the window glass assembly in the fifth embodiment of this application.

[0036] Figure 8 This is a schematic diagram of the window glass assembly in the sixth embodiment of this application.

[0037] Figure 9 This is a schematic diagram of the window glass assembly in the seventh embodiment of this application.

[0038] Figure 10 This is a schematic diagram of the window glass assembly in the eighth embodiment of this application.

[0039] Figure 11 This is a schematic diagram of the window glass assembly in the ninth embodiment of this application.

[0040] Figure 12 This is a schematic diagram of the window glass assembly in the tenth embodiment of this application.

[0041] Figure 13 This is a schematic diagram of the window glass assembly in the eleventh embodiment of this application.

[0042] Figure 14 This is a schematic diagram of the window glass assembly in the twelfth embodiment of this application.

[0043] Labeling: Window glass assembly 1, bracket 111, window glass 112, outer glass layer 1121, adhesive layer 1122, first sub-layer 1122a, second sub-layer 1122b, third sub-layer 1122c, inner glass layer 1123, anti-reflective layer 1124, through hole 1125, visible light cutoff layer 1126, lidar module 12, transmitting module 121, receiving module 122, first receiving module 122a, second receiving module 122b, light-transmitting part 1221, receiving part 1222, control module 123, scanning module 124, first reflector 1241, second reflector 1242, object under test 13. Detailed Implementation

[0044] The following are preferred embodiments of this application. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

[0045] Unless otherwise stated or in case of conflict, the terms or phrases used in this application shall have the following meanings:

[0046] In this application, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0047] In this application, "one or more" refers to any one, any two, or any two or more of the listed items. "Several" refers to any two or more.

[0048] In this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0050] Please refer to this as well. Figures 1-3 , Figure 7 ,and Figure 11 This application provides a vehicle window glass assembly 1, which includes a window glass 112, a bracket 111, and a lidar module 12. The window glass 112 includes an outer glass layer 1121, an adhesive layer 1122, and an inner glass layer 1123 stacked sequentially, and the bracket 111 is installed on the side of the inner glass layer 1123 opposite to the adhesive layer 1122.

[0051] The lidar module 12 includes a transmitting module 121 and a receiving module 122. The transmitting module 121 is used to transmit a detection signal to the object under test 13, and the receiving module 122 is used to receive the detection signal reflected back by the object under test 13. The transmitting module 121 is mounted on the bracket 111, and the receiving module 122 is mounted between the outer glass layer 1121 and the inner glass layer 1123.

[0052] The window glass 112 is mounted on the vehicle body and can be used as a windshield, rear windshield, side window, A-pillar trim glass, B-pillar trim glass, C-pillar trim glass, or D-pillar trim glass, etc. The outer surface of the window glass 112 faces outwards, and the inner surface faces inwards. A bracket 111 is mounted on the inner surface of the window glass 112. A transmitting module 121 is mounted on the bracket 111, and a receiving module 122 is mounted between the outer glass layer 1121 and the inner glass layer 1123, thereby enabling the lidar module 12 to be built into the vehicle's interior. The detection signal emitted by the transmitting module 121 directly... The detection signal received by the receiving module 122 from the object under test 13 passes through the outer glass layer 1121 or only through the outer glass layer 1121 and the adhesive layer 1122. The window glass 112 can replace the near-infrared high-transmittance window of the traditional lidar module itself. It can resist the interference and damage to the lidar module caused by harsh external environments such as strong winds, salt spray, ultraviolet aging, and cold and hot environments. It can also further avoid the attenuation of the detection signal caused by the near-infrared high-transmittance window of the lidar module itself, thereby further improving the transmittance of the detection signal and achieving a transmittance of at least 85% for the incident detection signal.

[0053] The wavelengths of the detection signals emitted by the transmitting module 121 and received by the receiving module 122 can both be within the range of 850nm to 1650nm. For example, the lidar module 12 can use lidar with detection signal wavelengths of 850nm, 905nm, 1064nm, or 1550nm. Lidar can accurately perceive the three-dimensional information of the external environment, detect and identify the specific outlines, distances, speeds, accelerations, and other information of obstacles such as pedestrians and other vehicles, and perform positioning and odometer functions. As the autonomous driving level of vehicles improves to L2.5 or higher, and even reaches L3, L4, and L5, the lidar module 12 can use multiple lidars in combination, such as simultaneously using a 905nm lidar and a 1550nm lidar, or simultaneously using an 850nm lidar and a 1064nm lidar.

[0054] When used as a windshield or rear windshield of a vehicle, the mounting angle of the window glass 112 is typically 18° to 60°, such as 20°, 25°, 30°, 35°, 40°, etc. In this case, the detection signal passes through the window glass 112 at an incident angle of 30° to 72°. Preferably, the window glass 112 has a transmittance of at least 85% for detection signals incident at 30° to 72°.

[0055] When used as a side window, A-pillar trim glass, B-pillar trim glass, C-pillar trim glass, or D-pillar trim glass of a vehicle, the mounting angle of the window glass 112 is typically 60° to 90°, such as 60°, 65°, 70°, 75°, 80°, or 85°. In this case, the detection signal passes through the window glass 112 at an incident angle of 0° to 30°. Preferably, the window glass 112 has a transmittance of at least 85% for detection signals incident at 0° to 30°. The mounting angle of the window glass 112 is the angle between the window glass 112 and the horizontal plane when it is mounted on the vehicle, indicating the degree of tilt of the windshield 200.

[0056] To more easily improve the transmittance of the window glass 112 to the incident detection signal, the detection signal preferably comprises at least 50% P-polarized light and at most 50% S-polarized light. For example, the detection signal may comprise 50% P-polarized light and 50% S-polarized light, or 60% P-polarized light and 40% S-polarized light, or 70% P-polarized light and 30% S-polarized light, or 80% P-polarized light and 20% S-polarized light, or 90% P-polarized light and 10% S-polarized light, or 100% P-polarized light (i.e., the detection signal is essentially pure P-polarized light). It is understood that the higher the proportion of P-polarized light in the detection signal, the easier it is to improve the transmittance of the window glass 112 to the detection signal.

[0057] The vehicle window glass 112 includes an outer glass layer 1121, an adhesive layer 1122, and an inner glass layer 1123 stacked sequentially. The outer glass layer 1121 has a first surface and a second surface opposite to each other, and the inner glass layer 1123 has a third surface and a fourth surface opposite to each other. The first surface is the outer surface of the vehicle window glass 112, and the fourth surface is the inner surface of the vehicle window glass 112. The adhesive layer 1122 is used to connect the outer glass layer 1121 and the inner glass layer 1123, so that the vehicle window glass 112 as a whole presents a laminated glass structure, thereby improving the safety of the vehicle window glass 112 and making it meet the safety standards and regulatory requirements for vehicle window glass.

[0058] The window glass 112 has a signal transmission area for the detection signal to pass through, the signal transmission area having a transmittance of at least 85% for the incident detection signal.

[0059] To ensure that the signal transmission area has at least 85% transmittance of the incident detection signal, the outer glass layer 1121 and / or the inner glass layer 1123 are preferably ultra-transparent glass (ultra-clear glass). In some embodiments, both the outer glass layer 1121 and the inner glass layer 1123 are ultra-transparent glass. In other embodiments, the outer glass layer 1121 is ultra-transparent glass, and the inner glass layer 1123 is transparent or tinted glass, with a through-hole in the signal transmission area, allowing the detection signal to pass only through the outer glass layer 1121. The total iron content (calculated as Fe2O3) in the ultra-transparent glass is very low, less than or equal to 0.015% or 0.01% by weight, or even essentially free of iron oxide (Fe2O3), and the visible light transmittance of the ultra-transparent glass is greater than 90%. The total iron content (calculated as Fe2O3) in transparent glass is low, specifically less than or equal to 0.1%, 0.09%, 0.08%, 0.07%, or 0.05% by weight, and the visible light transmittance of the transparent glass is greater than 80%. The total iron content in tinted glass is higher, specifically greater than or equal to 0.5%, 0.6%, 0.7%, or 0.8% by weight, and preferably less than or equal to 1%, and the visible light transmittance of the tinted glass is greater than 70%.

[0060] The adhesive layer 1122 can be made of materials such as polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), thermoplastic polyurethane elastomer (TPU), or ionomer film (SGP). For example, the adhesive layer 1122 can be a single-layer or multi-layer structure; multi-layer structures can include, for example, double-layer, triple-layer, quadruple-layer, and five-layer structures. The adhesive layer 1122 can also have other functions, such as providing at least one colored area as a shaded area to reduce sunlight interference with the human eye, adding an infrared absorber to provide sun protection or heat insulation, adding an ultraviolet absorber to provide ultraviolet protection, or having at least one layer of the multi-layer structure with a higher plasticizer content to provide sound insulation, or having a wedge angle of 0.1 mrad to 0.7 mrad to eliminate image ghosting in the head-up display.

[0061] This application enables the separation of the lidar module 12, thereby achieving separate installation, miniaturization, improved heat dissipation, and enhanced transmittance. The lidar module 12 also includes a control module 123, which controls the transmitting module 121 to transmit detection signals and the receiving module 122 to receive the detection signals reflected back from the object under test 13. The control module 123 also analyzes and processes the received detection signals. The control module 123 is electrically connected to both the transmitting module 121 and the receiving module 122. The control module 123, the transmitting module 121, and the receiving module 122 are separately installed. The transmitting module 121 is mounted on the bracket 111, and the receiving module 122 is installed between the outer glass layer 1121 and the inner glass layer 1123. In this application, "separate installation" means not located in the same position.

[0062] The lidar module 12 can be a semi-solid-state lidar module or a pure solid-state lidar module. For example, Figure 1 As shown, the solid-state lidar module includes a transmitting module 121, a receiving module 122, and a control module 123, but does not include a scanning module 124. For example, the solid-state lidar module may employ FLASH or optical phased array (OPA) technologies. Figure 2 As shown, the semi-solid-state lidar module includes a transmitting module 121, a receiving module 122, a control module 123, and a scanning module 124. For example, the semi-solid-state lidar module adopts a microelectromechanical system (MEMS) lens module, a galvanometer type, a rotating mirror type, a galvanometer + rotating mirror type, etc.

[0063] The transmitting module 121 is used to transmit detection signals. Since the signal transmission area of ​​the vehicle window glass 112 replaces the near-infrared high-transmittance window of the traditional lidar module, the detection signal does not need to pass through the near-infrared high-transmittance window but directly passes through the signal transmission area, further improving the transmittance of the detection signal. Optionally, the transmitting module 121 can be an EEL (Edge Emitter), VCSEL (Vertical Cavity Surface Emitter), or fiber optic detector, etc. Optionally, the transmitting module 121 can be a single detector or multiple detectors, and the number of detectors can be ≥3, ≥5, or ≥8, etc. Multiple detectors are composed of multiple single detectors arranged together. Multiple detectors can obtain a larger field of view (FOV) than a single detector. The transmitting module 121 is detachably mounted on the bracket 111 or fixedly integrated on the bracket 111.

[0064] The receiving module 122 is used to receive the detection signal reflected back by the object under test 13. Optionally, the receiving module 122 can be an APD (Avalanche Photodiode), SPAD / SPPC (Single Photon Avalanche Diode), SiPM / MPPC (Silicon Photomultiplier Tube), etc. The receiving module 122 can be fixedly integrated into the window glass 112, for example, the receiving module 122 can be disposed in the adhesive layer 1122. Further, the receiving module 122 can be embedded in or sandwiched within the adhesive layer 1122. For another example, the receiving module 122 can be disposed between the outer glass layer 1121 and the adhesive layer 1122. For yet another example, the receiving module 122 can be disposed between the adhesive layer 1122 and the inner glass layer 1123.

[0065] The control module 123 can be, but is not limited to, a processor. The processor includes one or more general-purpose processors, which can be any type of device capable of processing electronic instructions, including a central processing unit (CPU), microprocessor, microcontroller, main processor, controller, and ASIC, etc. The processor is used to execute various types of digital storage instructions, such as software or firmware programs stored in memory, enabling the computing device to provide a wide range of services. The control module 123 is disposed in the vehicle body panel and is electrically connected to the transmitting module 121, scanning module 124, and receiving module 122 via wired connections. Optionally, the control module 123 is mounted on the vehicle body, or fixedly integrated into the bracket 111, or integrated into the window glass 112.

[0066] Please refer to Figure 2 In another embodiment, the lidar module 12 further includes a scanning module 124. The scanning module 124 is used to control the transmission direction of the detection signal to achieve detection within the field of view of the lidar module 12. The scanning module 124 is mounted on the bracket 111 and is separately disposed from the transmitting module 121. The horizontal field of view of the lidar module 12 is between 90° and 160°, for example, 90°, 100°, 120°, 140°, 160°, etc. The vertical field of view of the lidar module 12 is between 10° and 40°, for example, 10°, 20°, 25°, 30°, 40°, etc.

[0067] The scanning module 124 is used to control the transmission direction of the detection signal to achieve detection within the field of view of the lidar module 12; in other words, the scanning module 124 is used to reflect or transmit the detection signal. The scanning module 124 is electrically connected to the control module 123. The control module 123 is also used to control the scanning module 124 to achieve detection within the field of view of the lidar module 12. Optionally, the scanning module 124 may be composed of one or more mirrors, partial mirrors, galvanometers, rotating mirrors, MEMS modules, or double wedge prisms. The partial mirror includes a reflecting part and a transmitting part 1221; the reflecting part is used to reflect the detection signal, and the transmitting part 1221 is used to allow the detection signal to pass through. The entire surface of the mirror is used to reflect the detection signal. The scanning module 124 can be fixedly integrated onto the bracket 111. Optionally, the scanning module 124 is separately disposed from the control module 123.

[0068] The scanning module 124 can control the transmission direction of the detection signal. For example, the reflector and partial reflector remain stationary, only changing the optical path of the detection signal emitted by the transmitting module 121. Alternatively, both the galvanometer and the rotating mirror can move. Because the galvanometer and the rotating mirror move, the incident angle of the detection signal on their reflecting surfaces changes, and the reflection angle also changes accordingly. Since the galvanometer and the rotating mirror move according to a preset pattern, the light reflected by them is diffused over a wider area, thereby expanding the field of view of the light emitted by the transmitting module 121. By setting the movement mode and direction of the galvanometer and the rotating mirror, the galvanometer can obtain a field of view in the same direction that is larger than the field of view of the light emitted by the transmitting module 121, and the rotating mirror can obtain a field of view perpendicular to the field of view of the light emitted by the transmitting module 121. Therefore, the field of view of the detection signal can be expanded by the galvanometer and the rotating mirror, achieving detection within the field of view range of the lidar module 12. A rotating mirror can be a regular polyhedral rotating mirror or an irregular polyhedral rotating mirror. MEMS is a type of lens that integrates a galvanometer and a rotating mirror, combining the functions of both.

[0069] exist Figure 1 In this implementation, the transmitting module 121 transmits a detection signal, which passes through the signal transmission area of ​​the vehicle window glass 112 and reaches the object under test 13. The object under test 13 reflects part of the detection signal to form an echo signal, which passes through the outer glass layer 1121 of the signal transmission area and is received by the receiving module 122. The control module 123 obtains the received detection signal from the receiving module 122 and analyzes and processes the detection signal to detect the shape, size, distance from the vehicle, etc. of the object under test 13.

[0070] exist Figure 2In this implementation, the transmitting module 121 transmits a detection signal, which is reflected or transmitted by the scanning module 124 and its field of view is expanded. After passing through the signal transmission area of ​​the vehicle window glass 112, the signal reaches the object under test 13. The object under test 13 reflects part of the detection signal to form an echo signal. The reflected detection signal passes through the outer glass layer 1121 of the signal transmission area and is then transmitted or reflected by the scanning module 124, and is finally received by the receiving module 122. The control module 123 obtains the received detection signal from the receiving module 122 and analyzes and processes the detection signal, thereby detecting the shape, size, distance of the object under test 13 from the vehicle, etc.

[0071] This application reduces the space occupied by the lidar module 12 by disassembling it and separating the transmitting module 121, receiving module 122, control module 123, and / or scanning module 124. The transmitting module 121 is mounted on the bracket 111, and the receiving module 122 is mounted on the vehicle window glass 112. This solves the problems of large overall size and weight of traditional lidar modules 12. Furthermore, the near-infrared high-transmittance window of traditional lidar modules 12 can be omitted, thereby achieving miniaturization, convenient heat dissipation, better transmittance, and cost savings. At the same time, it also reduces the difficulty of integrating the lidar module 12 with other sensors.

[0072] In one embodiment, the outer glass layer 1121 has opposing first and second surfaces, and the inner glass layer 1123 has opposing third and fourth surfaces, wherein the first surface is the outer surface of the window glass 112, and the fourth surface is the inner surface of the window glass 112.

[0073] The vehicle window glass 112 has a signal transmission area for the detection signal to pass through, the signal transmission area having a transmittance of at least 85% for the incident detection signal, preferably at least 90%, and more preferably at least 95%. For example, the detection signal is incident on the signal transmission area of ​​the vehicle window glass 112 at a 65° incident angle, and the signal transmission area has a transmittance of 88% for the detection signal incident at a 65° incident angle. As another example, the detection signal is incident on the signal transmission area of ​​the vehicle window glass 112 at a 0° incident angle, and the signal transmission area has a transmittance of 92% for the detection signal incident at a 0° incident angle.

[0074] In one embodiment, the window glass 112 further includes a heat insulation layer, the heat insulation layer making the total solar transmittance of the window glass 112 less than or equal to 55%, the heat insulation layer avoiding the signal transmission area; the heat insulation layer is disposed on the second surface, or on the third surface, or in the adhesive layer 1122.

[0075] Optionally, the heat insulation layer ensures that the total solar transmittance of the window glass 112 is ≤55%, ≤50%, ≤45%, or ≤40%. The lower the total solar transmittance, the better the solar energy blocking effect of the window glass 112. This embodiment ensures that the heat insulation layer can block solar energy and improve the thermal comfort of the vehicle by avoiding the signal transmission area, i.e., the heat insulation layer is not installed in the signal transmission area. This also avoids the signal transmission area from attenuating the transmittance of the detection signal.

[0076] Please refer to this as well. Figure 3 , Figure 5 , Figure 7 , Figure 9 , Figure 11 and Figure 13 In one embodiment, the window glass 112 further includes an anti-reflective layer 1124, which is disposed on the inner surface and at least covers the signal transmission area. The transmittance of the signal transmission area with the anti-reflective layer 1124 to the incident detection signal is at least 3%, preferably at least 5%, more preferably at least 8%, higher than that of the signal transmission area without the anti-reflective layer 1124 to the incident detection signal. For example, when a detection signal is incident on the signal transmission area of ​​the vehicle window glass 112 at an incident angle of 65°, if the signal transmission area is not provided with an anti-reflection layer 1124, the transmittance of the signal transmission area without the anti-reflection layer 1124 to the detection signal incident at an incident angle of 65° is 87%; when the signal transmission area is provided with an anti-reflection layer 1124, the transmittance of the signal transmission area with the anti-reflection layer 1124 to the detection signal incident at an incident angle of 65° is 92%. By adding an anti-reflection layer 1124, the transmittance of the signal transmission area to the incident detection signal is improved, thereby enhancing the accuracy and stability of the detection.

[0077] Optionally, the antireflection layer 1124 is disposed on the optical path of the lidar module 12. The antireflection layer 1124 can be located on the second surface, the third surface, or the fourth surface. The antireflection layer 1124 can be implemented by magnetron sputtering, sol-gel process, or bonding process.

[0078] Please refer to this as well. Figure 4 , Figure 6 , Figure 8 , Figure 10 , Figure 12 and Figure 14 In another embodiment, the inner glass layer 1123 has a through hole 1125 located within the signal transmission area, through which the detection signal can pass.

[0079] The through-hole 1125 is used to prevent the inner glass layer 1123 from attenuating the detection signal. The through-hole 1125 is disposed in the optical path of the lidar module 12. Since the inner glass layer 1123 has the through-hole 1125, the detection signal does not need to penetrate the inner glass layer 1123, reducing the reflection and absorption of the detection signal by the inner glass layer 1123, thereby increasing the transmittance of the detection signal in the signal transmission area. Furthermore, the adhesive layer 1122 also has a through-hole. The area of ​​the through-hole of the adhesive layer 1122 is greater than or equal to the area of ​​the through-hole 1125 of the inner glass layer 1123. The axis of the through-hole of the adhesive layer 1122 coincides with the axis of the through-hole 1125 of the inner glass layer 1123. The through-hole of the adhesive layer 1122 can further prevent the attenuation of the detection signal by the adhesive layer 1122, so that the detection signal does not need to penetrate the inner glass layer 1123 and the adhesive layer 1122 but only passes through the outer glass layer 1121, which is more conducive to increasing the transmittance of the detection signal in the signal transmission area.

[0080] To improve the accuracy of receiver module 122, please refer to the following: Figures 5-6 , Figures 9-10 ,and Figures 13-14 In one embodiment, the vehicle window glass 112 further includes a visible light cutoff layer 1126, which covers the signal transmission area; the visible light transmittance of the signal transmission area having the visible light cutoff layer is less than or equal to 1%, and has a transmittance of at least 85% for incident detection signals.

[0081] The visible light cutoff layer 1126 is disposed on the second surface, or on the third surface, or on the fourth surface, or in the adhesive layer 1122.

[0082] The visible light blocking layer 1126 is used to allow the detection signal to pass through with high transmittance while blocking visible light from passing through. This achieves high transmittance of the detection signal while shielding the bracket and the lidar module 12, thereby improving the overall appearance consistency of the vehicle window glass 112. The visible light blocking layer can be achieved through magnetron sputtering, sol-gel processes, or adhesive bonding processes.

[0083] The visible light transmittance of the visible light cutoff layer 1126 is ≤1%. Optionally, the visible light transmittance of the visible light cutoff layer 1126 is ≤0.8%, or ≤0.6%, or ≤0.5%, or ≤0.4%, or any two of these values.

[0084] The visible light cutoff layer 1126 has a transmittance of ≥85% for the incident detection signal. Optionally, the visible light cutoff layer 1126 has a transmittance of ≥88%, ≥90%, or ≥95% for the incident detection signal.

[0085] Optionally, the haze of the visible light cutoff layer 1126 is ≤5%. More preferably, the haze of the visible light cutoff layer 1126 is ≤4%, ≤3%, ≤2%, or ≤1%.

[0086] Please refer to this as well. Figures 3-14 In one embodiment, the receiving module 122 includes a light-transmitting part 1221 and a receiving part 1222, the receiving part 1222 being arranged around the outer periphery of the light-transmitting part 1221; the detection signal emitted by the transmitting module 121 passes through the light-transmitting part 1221 and the window glass 112 to reach the object under test 13, and the detection signal reflected back by the object under test 13 passes through the outer glass layer 1121 and is received by the receiving part 1222.

[0087] The light-transmitting portion 1221 is used to transmit the detection signal from the transmitting module 121. The light-transmitting portion 1221 can transmit the detection signal. The receiving portion 1222 has a receiving surface facing the outer glass layer 1121, and is used to receive the detection signal reflected back by the object under test 13.

[0088] In one embodiment, the ratio s1 / s2 of the area s1 of the light-transmitting portion 1221 to the area s2 of the receiving portion 1222 is in the range of 1 / 2 to 1 / 4. Further optionally, the ratio s1 / s2 of the area s1 of the light-transmitting portion 1221 to the area s2 of the receiving portion 1222 is 1 / 2, or 1 / 2.5, or 1 / 3, or 1 / 3.5, or 1 / 4, or a range consisting of any two of these values.

[0089] By limiting the ratio s1 / s2 of the area s1 of the light-transmitting part 1221 to the area s2 of the receiving part 1222 to a range of 1 / 2 to 1 / 4, the receiving module 122 can cooperate with the transmitting module 121. On the one hand, this facilitates the light-transmitting part 1221 to concentrate the reflection of the detection signal emitted from the transmitting module 121 to the object under test 13. On the other hand, it facilitates the receiving part 1222 to receive more detection signals. If the ratio s1 / s2 of the area s1 of the light-transmitting part 1221 to the area s2 of the receiving part 1222 is less than or greater than 1 / 2 to 1 / 4, the optical path of the detection signal from the transmitting module 121 to the object under test 13, or the optical path reflected back from the object under test 13 to the receiving module 122, will be affected, resulting in optical path obstruction and interruption, and also increasing the manufacturing cost of the lidar module 12.

[0090] The arrangement of the transmitting module 121, receiving module 122, and scanning module 124 will be specifically described below with reference to several embodiments. The scanning module 124 includes a first reflection group and a second reflection group. The detection signal emitted by the transmitting module 121 is reflected sequentially by the first reflection group and the second reflection group, and then passes through the light-transmitting part 1221 and the window glass 112 to reach the object under test. The detection signal reflected back by the object under test passes through the outer glass layer 1121 and is received by the receiving part 1222.

[0091] In one embodiment, at least one of the first reflective group and the second reflective group is capable of movement.

[0092] Optionally, both the first and second reflection groups can be composed of one or more reflective elements. The reflective elements can be mirrors, partial mirrors, galvanometers, rotating mirrors, or MEMS modules. It should be noted that the control module 123 is used to control the movement of at least one of the first and second reflection groups. This can be either the first reflection group moving while the second reflection group remains stationary, the first reflection group remaining stationary while the second reflection group moves, or both the first and second reflection groups moving. Both the first and second reflection groups can include one or more reflective elements. In either the first or second reflection group, the control module 123 can control all reflective elements to move, or control all reflective elements to remain stationary, or control some reflective elements to move while others remain stationary. It should be noted that the movement can be rotation, oscillation, or linear reciprocating motion. For example, the movement could be a reflective element rotating along its own central axis or an reflective element oscillating along its own axis of symmetry.

[0093] As at least one of the first and second reflection groups moves, the incident angle of the detection signal on the reflecting surface of the moving reflection group changes, and the reflection angle also changes accordingly. Since at least one of the first and second reflection groups moves according to a preset rule, the light reflected by the moving reflection group is diffused to a larger range, thereby expanding the field of view of the light emitted by the transmitting module 121.

[0094] In one embodiment, the first reflector group includes a first reflector 1241, and the second reflector group includes a second reflector 1242. The detection signal emitted by the transmitting module 121 is reflected sequentially by the first reflector 1241 and the second reflector 1242, then passes through the light-transmitting part 1221 and the window glass 112 to reach the object under test. The detection signal reflected back from the object under test passes through the outer glass layer 1121 and is received by the receiving part 1222.

[0095] Please refer to this as well. Figures 3-6In one embodiment, the second reflector 1242 rotates under the control of the control module 123. For example, the rotation direction of the second reflector 1242 is as follows: Figure 3 Shown in the D direction.

[0096] The first reflector 1241 can be a single-sided reflector. The first reflector 1241 can be fixedly integrated onto the bracket 111. The first reflector 1241 remains stationary. The second reflector 1242 can be a rotating mirror, rotating under the control of the control module 123. Optionally, the second reflector 1242 can be a regular polyhedral rotating mirror or an irregular polyhedral rotating mirror. Optionally, the second reflector 1242 has multiple first reflecting surfaces, the number of which can be 2, 3, 4, 5, 6, or more than 6. The second reflector 1242 can be fixedly integrated onto the bracket 111.

[0097] The detection signal emitted by the transmitting module 121 is reflected by the first reflector 1241 and then sent to the second reflector 1242. After being reflected by the second reflector 1242, it passes through the light-transmitting part 1221 and the window glass 112 and is sent to the object under test 13. The detection signal reflected back by the object under test 13 passes through the outer glass layer 1121 and is sent to the receiving part 1222, where it is received by the receiving module 122.

[0098] Please refer to this as well. Figures 7-10 In another embodiment, the second reflector 1242 oscillates along the axis of symmetry of the second reflector 1242 under the control of the control module 123.

[0099] The first reflector 1241 can specifically be a single-sided reflector. The first reflector 1241 can be fixedly integrated onto the bracket 111. The first reflector 1241 remains stationary. The first reflector 1241 is used to reflect the detection signal from the self-emitting module 121 to the second reflector 1242. The second reflector 1242 can specifically be a galvanometer or a MEMS module. The galvanometer is a single-sided mirror. The second reflector 1242 oscillates under the control of the control module 123. The second reflector 1242 can be fixedly integrated onto the bracket 111. The second reflector 1242 is used to propagate the detection signal horizontally and vertically, expanding the horizontal and vertical field of view of the detection signal. Optionally, the major axis diameter of the MEMS module can be ≥5mm, ≥8mm, or ≥10mm.

[0100] Optionally, the axis of symmetry includes a first axis and a second axis perpendicular to the first axis. The second reflector 1242 swings along the first axis and the second axis under the control of the control module 123 to expand the horizontal and vertical field of view of the detection signal.

[0101] Please refer to this as well. Figures 11-14 In another embodiment, the receiving module 122 includes a first receiving module 122a and a second receiving module 122b. The first receiving module 122a includes the light-transmitting part 1221 and the receiving part 1222, and the first receiving module 122a is installed between the outer glass layer 1121 and the inner glass layer 1123. The transmitting module 121 and the second receiving module 122b are integrated into one unit, and the second receiving module 122b is disposed on the bracket 111.

[0102] The first receiving module 122a is installed between the outer glass layer 1121 and the inner glass layer 1123. The transmitting module 121 and the second receiving module 122b are integrated into one unit to form a transmitting and receiving module. Both the transmitting module 121 and the second receiving module 122b are mounted on the bracket 111. The first reflector 1241 can specifically be a galvanometer or a MEMS module. The galvanometer is a one-sided mirror. The first reflector 1241 swings under the control of the control module 123. The first reflector 1241 can be fixedly integrated on the bracket 111.

[0103] In one embodiment, the first reflector 1241 and the second reflector 1242 are capable of movement under the control of the control module 123.

[0104] Optionally, the first reflector 1241 oscillates along its axis of symmetry under the control of the control module 123, and the second reflector 1242 rotates under the control of the control module 123. The first reflector 1241 and the second reflector 1242 cooperate to expand the horizontal and vertical field of view of the detection signal. The rotation direction of the second reflector 1242 is as follows... Figure 11 Shown in the D direction.

[0105] Optionally, the axis of symmetry includes a first axis and a second axis perpendicular to the first axis. The first reflector 1241 swings along the first axis and the second axis under the control of the control module 123 to expand the horizontal and vertical field of view of the detection signal.

[0106] The second reflector 1242 can be a rotating mirror, rotating under the control of the control module 123. Optionally, the second reflector 1242 can be a regular polyhedral rotating mirror or an irregular polyhedral rotating mirror. Optionally, the second reflector 1242 has multiple first reflecting surfaces, the number of which can be 2, 3, 4, 5, 6, or more than 6. The second reflector 1242 can be fixedly integrated onto the bracket 111.

[0107] Please refer to this as well. Figures 3-14 In one embodiment, the second reflector 1242 and the transmitting module 121 are disposed on the same side of the first reflector 1241, and the receiving module 122 is disposed on the side of the first reflector 1241 opposite to the transmitting module 121 and the second reflector 1242.

[0108] Optionally, the second reflector 1242 has a reflective surface, and the light-transmitting portion 1221 covers the reflective surface in the orthographic projection of the second reflector 1242. The reflective surface is located within the orthographic projection of the light-transmitting portion 1221 of the second reflector 1242 to ensure that all detection signals reflected by the second reflector 1242 can reach the light-transmitting portion 1221.

[0109] Please refer to this as well. Figures 3-14 In one embodiment, along the arrangement direction from the outer glass layer 1121 to the inner glass layer 1123, the adhesive layer 1122 includes a first sublayer 1122a, a second sublayer 1122b, and a third sublayer 1122c stacked sequentially. The second sublayer 1122b is provided with a mounting hole penetrating the second sublayer 1122b facing the surface of the first sublayer 1122a and the surface of the second sublayer 1122b facing the surface of the third sublayer 1122c. The receiving module 122 is disposed in the mounting hole.

[0110] During manufacturing, the adhesive layer 1122 can be divided into a first sublayer 1122a, a second sublayer 1122b, and a third sublayer 1122c, with the second sublayer 1122b having mounting holes. The receiving module 122 is first placed within the mounting holes of the second sublayer 1122b. Then, the first sublayer 1122a is placed on one side of the second sublayer 1122b, and the third sublayer 1122c is placed on the other side, thereby reducing manufacturing difficulty and improving assembly efficiency.

[0111] Furthermore, this arrangement allows the receiving module 122 to be completely placed within the adhesive layer 1122, without being exposed to the outer glass layer 1121 and the inner glass layer 1123, and also provides protection for the receiving module 122.

[0112] This application also provides a vehicle, including a body and the window glass assembly provided above, wherein the window glass is disposed on the body.

[0113] The vehicle provided in this embodiment may be, but is not limited to, a sedan, truck, pickup truck, commercial vehicle, bus, and SUV; this application makes no limitation thereto. The bracket 111 is installed on the inner surface of the window glass 112, and at least one of the transmitting module 121 and the receiving module 122 is installed on the bracket 111, thereby enabling the lidar module 12 to be built into the vehicle's interior. The window glass 112 can replace the near-infrared high-transmittance window of the lidar module itself in the prior art. It can resist interference and damage to the lidar module from harsh external environments such as strong winds, salt spray, ultraviolet aging, and cold and hot environments. Furthermore, it can avoid the attenuation of the detection signal caused by the near-infrared high-transmittance window of the lidar module itself, thereby further improving the transmittance of the detection signal and achieving a transmittance of at least 85% for the incident detection signal. This allows the vehicle's autonomous driving level to be upgraded to L2.5 or higher, or even L3, L4, or L5.

[0114] The foregoing has provided a detailed description of the embodiments of this application, elucidating and explaining the principles and implementation methods of this application. These descriptions are merely for the purpose of aiding understanding the method and core ideas of this application. However, the content of this specification should not be construed as a limitation of this application. Those skilled in the art can make various modifications and variations to this application without departing from its spirit and scope. These modifications and variations fall within the scope of the claims of this application and their equivalents.

Claims

1. A vehicle window glass assembly, characterized in that, The window glass assembly includes window glass, bracket, and lidar module; The vehicle window glass includes an outer glass layer, an adhesive layer, and an inner glass layer stacked in sequence, and the bracket is installed on the side of the inner glass layer away from the adhesive layer; The lidar module includes a transmitting module and a receiving module. The transmitting module is used to transmit a detection signal to the object being measured, and the receiving module is used to receive the detection signal reflected back by the object being measured. The transmitting module is mounted on the bracket, and the receiving module is mounted between the outer glass layer and the inner glass layer; The receiving module includes a first receiving module and a second receiving module. The first receiving module includes a light-transmitting part and a receiving part, and the first receiving module is installed between the outer glass layer and the inner glass layer. The transmitting module and the second receiving module are integrated into one unit, and the second receiving module is installed on the bracket. The outer glass layer has a first surface and a second surface opposite to each other, and the inner glass layer has a third surface and a fourth surface opposite to each other. The first surface is the outer surface of the window glass, and the fourth surface is the inner surface of the window glass. The vehicle window glass has a signal transmission zone for the detection signal to pass through; The vehicle window glass also includes an anti-reflective layer, which is disposed on the inner surface and at least covers the signal transmission area. The transmittance of the signal transmission area with the anti-reflective layer to the incident detection signal is at least 3% higher than that of the signal transmission area without the anti-reflective layer to the incident detection signal. The vehicle window glass also includes a visible light cut-off layer that covers the signal transmission area; the visible light transmittance of the signal transmission area having the visible light cut-off layer is less than or equal to 1%, and has at least 85% transmittance for incident detection signals; The visible light blocking layer is disposed on the second surface, or on the third surface, or on the fourth surface, or in the adhesive layer.

2. The vehicle window glass assembly as described in claim 1, characterized in that, The receiving module includes the light-transmitting part and the receiving part, with the receiving part arranged around the outer periphery of the light-transmitting part; the detection signal emitted by the transmitting module passes through the light-transmitting part and the window glass to reach the object under test, and the detection signal reflected back by the object under test passes through the outer glass layer and is received by the receiving part.

3. The vehicle window glass assembly as described in claim 2, characterized in that, The ratio of the area s1 of the light-transmitting part to the area s2 of the receiving part, s1 / s2, ranges from 1 / 2 to 1 / 4.

4. The vehicle window glass assembly as described in claim 2, characterized in that, The lidar module also includes a scanning module, which is used to control the transmission direction of the detection signal to achieve detection within the field of view of the lidar module. The scanning module is mounted on the bracket and is separately set from the transmitting module.

5. The vehicle window glass assembly as described in claim 4, characterized in that, The scanning module includes a first reflection group and a second reflection group. The detection signal emitted by the transmitting module is reflected sequentially by the first reflection group and the second reflection group, and then passes through the light-transmitting part and the window glass to reach the object under test. The detection signal reflected back by the object under test passes through the outer glass layer and is received by the receiving part.

6. The vehicle window glass assembly as described in claim 5, characterized in that, At least one of the first reflective group and the second reflective group is capable of movement.

7. The vehicle window glass assembly as described in claim 5, characterized in that, The first reflection group includes a first reflector, and the second reflection group includes a second reflector. The detection signal emitted by the transmitting module is reflected sequentially by the first reflector and the second reflector, and then passes through the light-transmitting part and the window glass to reach the object under test. The detection signal reflected back by the object under test passes through the outer glass layer and is received by the receiving part.

8. The vehicle window glass assembly as described in claim 7, characterized in that, The second reflector rotates under the control of the control module.

9. The vehicle window glass assembly as described in claim 7, characterized in that, The first reflector and the second reflector can move under the control of the control module.

10. The vehicle window glass assembly as claimed in claim 1, characterized in that, Along the arrangement direction from the outer glass layer to the inner glass layer, the adhesive layer includes a first sub-layer, a second sub-layer, and a third sub-layer stacked sequentially. The second sub-layer is provided with mounting holes that penetrate the second sub-layer and extend toward the surface of the first sub-layer and toward the surface of the third sub-layer. The receiving module is disposed in the mounting holes.

11. The vehicle window glass assembly as described in claim 1, characterized in that, The signal transmission area has a transmittance of at least 85% for the incident detection signal.

12. The vehicle window glass assembly as described in claim 11, characterized in that, The vehicle window glass also includes a heat insulation layer, which makes the total solar transmittance of the vehicle window glass less than or equal to 55%, and the heat insulation layer avoids the signal transmission area; the heat insulation layer is disposed on the second surface, or on the third surface, or in the adhesive layer.

13. The vehicle window glass assembly as described in claim 11, characterized in that, The inner glass layer has a through hole located within the signal transmission area, allowing the detection signal to pass through the through hole.

14. A vehicle, characterized in that, include: Body; as well as The vehicle window glass assembly according to any one of claims 1-13, wherein the vehicle window glass is disposed on the vehicle body.

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