Adaptive high beam module and vehicle lamp

Abstract

This application provides an adaptive high beam module and vehicle headlight, relating to the field of automotive lighting technology. The adaptive high beam module includes: a light source assembly comprising a plurality of light-emitting units spaced apart along a first direction; a reflector disposed on the light-emitting side of the light source assembly, the reflector including a plurality of reflective surfaces, each light-emitting unit corresponding to a reflective surface, the reflective surfaces configured to collimate the emitted light from the light-emitting units into parallel light along the first direction, and the reflective surfaces further configured to modulate the emitted light from the light-emitting units into light with a preset divergence angle along a second direction; and a lens disposed on one side of the reflector along a third direction and located on the reflected light path of the reflector, the lens configured to receive the reflected light from the reflective surfaces and project it into an illumination sub-region, the plurality of illumination sub-regions being spliced ​​together along the first direction to form an ADB light pattern, the first direction, the second direction, and the third direction being perpendicular to each other. The adaptive high beam module of this application has the advantages of high luminous efficiency, small size, and low weight.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, and in particular to an adaptive high beam module and automotive lighting. Background Technology

[0002] With the development of intelligent vehicle technology, vehicle lighting is becoming increasingly intelligent, and adaptive high beam systems (ADB) that can adapt to different scenarios are gradually becoming standard equipment in intelligent vehicles.

[0003] In related technologies, ADB modules consist of a light source, a condenser, a lens group, and other structures. The lens group causes the entire ADB module to have a large size and weight, and high light loss due to multiple refractions. Utility Model Content

[0004] This application proposes an adaptive high beam module and vehicle headlight, aiming to improve the problems of large size and weight and high light loss of the adaptive high beam module.

[0005] The specific technical solution is as follows: In a first aspect, embodiments of this application propose an adaptive high beam module, comprising: a light source assembly including a plurality of light-emitting units spaced apart along a first direction; a reflector disposed on the light-emitting side of the light source assembly, the reflector including a plurality of reflective surfaces, each of the light-emitting units corresponding to one of the reflective surfaces, the reflective surfaces being configured to collimate the emitted light of the light-emitting units into parallel light along the first direction, the reflective surfaces being further configured to modulate the emitted light of the light-emitting units into light with a preset divergence angle along a second direction; and a lens disposed on one side of the reflector along a third direction and located on the reflected light path of the reflector, the lens being configured to receive the reflected light from the reflective surfaces and project it into an illumination sub-region, the plurality of illumination sub-regions being spliced ​​together along the first direction to form an ADB light pattern, the first direction, the second direction, and the third direction being perpendicular to each other.

[0006] The adaptive high-beam module of this application embodiment forms an adaptive high-beam pattern in the far field through the combined action of a reflector and a lens. This configuration has several advantages. First, compared to lens-based designs in related technologies, the reflective design helps reduce light loss caused by Fresnel reflection at the interface, improving luminous efficiency and thus increasing illuminance while reducing energy consumption. Second, the reflector can also fold the optical path; compared to lenses, reflectors are lighter and smaller, further reducing the size and weight of the adaptive high-beam module, meeting the requirements for lightweight design. Therefore, the adaptive high-beam module of this application embodiment has the advantages of high luminous efficiency, small size, and low weight.

[0007] Furthermore, in this application, the reflector performs multiple functions, which can reduce the number of optical components and simplify the process. The reflector can be mass-produced using injection molding, resulting in lower costs. This also helps to reduce the production cost of the adaptive high-beam module.

[0008] In some embodiments, the intersection line between the reflective surface and the first virtual plane is a parabola, the intersection line between the reflective surface and the second virtual plane is a free curve, the first virtual plane is perpendicular to the second direction, and the second virtual plane is perpendicular to the first direction.

[0009] In this embodiment, the reflecting surface of the mirror is a free-form surface formed by fitting parabolas and free curves, thereby achieving an optical modulation effect where the reflecting surface collimates light in the horizontal direction and flexibly modulates it in the vertical direction. On the one hand, the reflecting surface can form a continuous smooth surface without obvious seams, which helps to further reduce the scattering loss of light during reflection, thus further improving luminous efficiency. On the other hand, free curves provide a high degree of design freedom, allowing for precise control of the divergence angle and light intensity distribution in the second direction, and optimization of the shape and uniformity of the light spot, thereby improving the quality of each illumination sub-region. Furthermore, compared to using free curve fitting for the reflecting surface in both directions, this method also helps to reduce the processing and manufacturing costs of the reflecting surface, thereby reducing the production cost of the adaptive high beam module.

[0010] In some embodiments, the light-emitting center of the light-emitting unit coincides with the focal point of the reflective surface along the first direction.

[0011] In this embodiment, when the light-emitting center of the light-emitting unit coincides with the focal point in the first direction, the reflective surface can maximize the collimation of the light from the light-emitting unit into parallel light along the first direction, thereby improving the boundary clarity and uniformity of the ADB light pattern. Furthermore, when the focal point in the first direction is precisely aligned with the light-emitting center, the horizontal position of the illumination sub-area corresponding to each light-emitting unit is more fixed, allowing for more precise blocking of the sub-area containing oncoming or forward vehicles, thus also improving the safety performance of adaptive high beams.

[0012] In some embodiments, the lens includes an incident surface and an exit surface, both of which are convex surfaces.

[0013] In other words, the lens is a biconvex lens, and its optical power is determined by the curvature of both the incident and exit surfaces. The biconvex design distributes the total optical power across two surfaces, significantly reducing the radius of curvature of any single surface. This helps reduce spherical aberration and coma, thereby improving the uniformity of light intensity and shape accuracy in the illumination sub-region. Furthermore, by dispersing curvature, the biconvex design can reduce the central thickness of the lens while achieving the same optical power, further reducing the size of the adaptive high-beam module.

[0014] In some embodiments, the focal point of the lens is located on one edge of the reflective surface near the light-emitting unit.

[0015] The object-side focal plane of the lens is defined by its focal point. Light rays emitted from any point on the object-side focal plane will form parallel light after passing through the lens. Therefore, in this embodiment, after the light emitted from the light-emitting unit is reflected by the reflective surface, in the horizontal direction (first direction), the reflective surface configures the reflected light into parallel light; while in the vertical direction (second direction), the reflective surface first configures the reflected light into light with a preset divergence angle. Furthermore, light with the preset divergence angle can be considered equivalent to light emitted from the object-side focal plane, which will also form parallel light after exiting the lens. This achieves light shaping in the vertical direction as well, allowing the light emitted from the lens to form sharp-edged ADB light spots, such as rectangular stripe light spots, in the far field. This not only improves the quality and accuracy of the light spot but also helps reduce stray light loss, improve light efficiency, and reduce aberrations.

[0016] In some embodiments, both the light-incident surface and the light-exiting surface are cylindrical, wherein: the directrix of the light-incident surface extends along the first direction, and the directrix of the light-exiting surface extends along the second direction; or, the directrix of the light-incident surface extends along the second direction, and the directrix of the light-exiting surface extends along the first direction.

[0017] In this embodiment, by setting the incident and exit surfaces as two cylindrical surfaces with different directions of optic extension, on the one hand, the lens can independently control the light in the first and second directions, achieving separation of refractive power directions. This is beneficial for further improving the lens's modulation effect on the light, significantly enhancing the precision of light pattern control, improving luminous efficiency and light pattern stability, and ensuring the effect of multiple illumination sub-regions being stitched together into an ADB light pattern. On the other hand, the optical parameters of the cylindrical surfaces are simpler, and the processing technology is more mature, which also helps to reduce mold development costs and improve processing yield.

[0018] In some embodiments, the curvature of the light-incident surface and the curvature of the light-exit surface are different.

[0019] This configuration allows the lens to deflect light differently in the first and second directions, giving it different magnification in the first and second directions. This results in better projection of the ADB light pattern, which in turn improves the uniformity of the illumination sub-region, optimizes the shape, and improves defects such as light pattern overlap and dark areas. At the same time, it can also ensure the horizontal splicing accuracy of adjacent illumination sub-regions.

[0020] In some embodiments, the light-emitting unit has a first end near the lens, the first end being deflected toward the side near the reflector; the light-emitting surface of the light-emitting unit is arranged at an angle to the optical axis of the lens.

[0021] This configuration optimizes the angle at which light from the light-emitting unit strikes the reflective surface, mitigating the loss of some light due to the incident angle exceeding the effective receiving range of the reflective surface, thus improving reflection efficiency. Furthermore, the reflected light must enter the lens, and the lens's light energy utilization is closely related to the incident angle. By deflecting the light-emitting unit, the efficiency of reflected light reaching the lens is improved, reducing Fresnel reflection losses. This contributes to improved luminous efficiency and reduced energy consumption. On the other hand, the deflection of the light-emitting unit further shortens its dimensions in the third direction, enabling a more compact design.

[0022] In some embodiments, the reflector includes a substrate and a reflective layer disposed on the surface of the substrate, the reflective layer being used to form the reflective surface, and the substrate being a polycarbonate substrate or a metal substrate.

[0023] Using polycarbonate as the substrate for the reflector offers several advantages. First, polycarbonate is heat-resistant, preventing thermal risks. Second, its low density significantly reduces the reflector's weight. Furthermore, injection molding allows for rapid fabrication of curved surfaces, improving manufacturing convenience and reducing costs. Using metal substrates such as aluminum alloys or magnesium alloys offers advantages. First, metals themselves have a certain reflectivity, which can be further enhanced by a reflective coating, thus improving light efficiency and reducing scattering. Second, metals have high thermal conductivity and a low coefficient of thermal expansion, ensuring the curvature stability of the reflective surface and maintaining long-term optical pattern accuracy.

[0024] Secondly, embodiments of this application propose a vehicle headlight, including the adaptive high beam module described in the first aspect.

[0025] This design offers several advantages. First, compared to lens-based designs in related technologies, the reflective design reduces light loss due to Fresnel reflection at the interface, improving luminous efficiency and thus increasing illuminance while reducing energy consumption. Second, the reflector allows for folding of the optical path; compared to lenses, reflectors are lighter and smaller, further reducing the size and weight of the adaptive high-beam module and meeting lightweight requirements. Therefore, the adaptive high-beam module of this application embodiment possesses the advantages of high luminous efficiency, small size, and low weight. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an adaptive high beam module provided in an embodiment of this application; Figure 2 This is a schematic diagram of the adaptive high beam module provided in an embodiment of this application from one viewpoint. Figure 3 A schematic diagram of the adaptive high beam module provided in an embodiment of this application from another perspective; Figure 4 A simulation diagram illustrating the effect of a single light spot (illumination sub-region) of the adaptive high beam module provided in this embodiment of the application; Figure 5 A simulation diagram illustrating the ADB beam pattern of the adaptive high beam module provided in this application embodiment.

[0027] The annotations in the attached figures are explained as follows: 10. Adaptive high beam module; 100. Light source assembly; 110. Light-emitting unit; 111. First end; 200. Mirror; 210. Reflecting surface; 300, Lens; 310, Entrance surface; 320, Exit surface. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In the description of 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 fixed 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] like Figures 1 to 5 As shown, Figure 1 This is a schematic diagram of the structure of an adaptive high beam module provided in an embodiment of this application. Figure 2 This is a schematic diagram of the adaptive high beam module provided in an embodiment of this application from one viewpoint. Figure 3 This is a schematic diagram of the adaptive high beam module provided in an embodiment of this application from another perspective. Figure 4 This is a simulation diagram of a single light spot (illumination sub-region) of the adaptive high beam module provided in the embodiments of this application. Figure 5 A simulation diagram illustrating the ADB beam pattern of the adaptive high beam module provided in this application embodiment.

[0033] In a first aspect, embodiments of this application propose an adaptive high beam module 10. The adaptive high beam module 10 includes a light source assembly 100, a reflector 200, and a lens 300. The light source assembly 100 includes a plurality of light-emitting units 110 arranged at intervals along a first direction X. The reflector 200 is disposed on the light-emitting side of the light source assembly 100 and includes a plurality of reflective surfaces 210. Each light-emitting unit 110 corresponds to a reflective surface 210, and the reflective surface 210 is configured to reflect the emitted light of the light-emitting unit 110. The light is collimated along the first direction X to form parallel light. The reflective surface 210 is also configured to modulate the emitted light from the light-emitting unit 110 into light with a preset divergence angle along the second direction Z. The lens 300 is disposed on one side of the reflector 200 along the third direction Y and is located on the reflected light path of the reflector 200. The lens 300 is configured to receive the reflected light from the reflective surface 210 and project it into an illumination sub-area. Multiple illumination sub-areas are spliced ​​together along the first direction X to form an ADB light pattern. The first direction X, the second direction Z, and the third direction Y are perpendicular to each other.

[0034] In this application, the adaptive high beam module 10 includes a light source assembly 100, a reflector 200, and a lens 300. The adaptive high beam module 10 is also known as the ADB (Advanced Driving Beam) module, which can achieve zone-controlled adaptive high beam lighting to avoid glare to vehicles or pedestrians ahead, while maximizing illumination of other areas.

[0035] The light source assembly 100 includes multiple light-emitting units 110, which emit light. Each light-emitting unit 110 can be an LED (Light Emitting Diode) chip or other light-emitting device that can be independently controlled to light up or dim; this application does not limit this. The adaptive high beam module 10 can receive signals from the vehicle's ADB control system and precisely and quickly independently control the on / off state and brightness of each light-emitting unit 110 (or multiple light-emitting units 110 in each group), thereby realizing the "adaptive" zone control ADB function. The light-emitting units 110 are arranged along a first direction X, which can be the left-right direction of the vehicle. The number of light-emitting units 110 determines the fineness of the zones that the adaptive high beam module 10 can independently control; the more units, the finer the zones and the more precise the control. Optionally, the second direction Z can be the vehicle's height direction, and the third direction Y can be the vehicle's front-rear direction.

[0036] The reflector 200 can initially adjust the light emitted from the light source assembly 100. The reflector 200 consists of multiple independent reflective surfaces 210, each precisely corresponding to a light-emitting unit 110. Along the first direction X, the reflective surface 210 acts as a collimator. After reflecting the light emitted from the light-emitting unit 110, the reflective surface 210 transforms it into parallel (or nearly parallel) light along the first direction X. This allows for the formation of a clear light spot boundary in the first direction X. Along the second direction Z, the reflective surface 210 controls the light emission. After reflecting the light emitted from the light-emitting unit 110, the reflective surface 210 transforms it into a beam with a preset divergence angle along the second direction Z. This determines the coverage and uniformity of the light spot in the second direction Z.

[0037] Lens 300 can perform a second adjustment on the reflected light from mirror 200, fine-tuning the light pattern. Its main functions include projection and protection. The light pattern of each illumination sub-area is determined by the corresponding reflecting surface 210 and the refractive power of lens 300 itself. (Refer to...) Figure 4 and Figure 5 Multiple lighting sub-regions are stitched together in the horizontal direction (first direction X) to form a complete, glare-free, and dynamically adaptable high beam pattern that changes according to road conditions. Lens 300 can compensate for minor deviations in reflected light, ensuring smooth transitions at the edges of the lighting sub-regions and improving dark areas or overlapping bright spots.

[0038] The adaptive high beam module 10 of this application embodiment forms an adaptive high beam pattern in the far field through the combined action of the reflector 200 and the lens 300. This configuration has several advantages. First, compared to lens group designs in related technologies, the reflective design helps reduce light loss caused by Fresnel reflection at the interface, improving luminous efficiency and thus increasing illuminance while reducing energy consumption. Second, the reflector 200 can also fold the optical path; compared to lenses, the reflector 200 is lighter and smaller, further reducing the size and weight of the adaptive high beam module 10, achieving lightweight design. Therefore, the adaptive high beam module 10 of this application embodiment has the advantages of high luminous efficiency, small size, and low weight.

[0039] Furthermore, in this application, the reflector 200 performs multiple functions, reducing the number of optical components and simplifying the manufacturing process. The reflector 200 can be mass-produced using injection molding, resulting in lower costs. This also helps reduce the production cost of the adaptive high-beam module 10.

[0040] like Figures 1 to 3 As shown, in some embodiments, the intersection line L1 of the reflecting surface 210 and the first virtual plane is a parabola, the intersection line L2 of the reflecting surface 210 and the second virtual plane is a free curve, the first virtual plane is perpendicular to the second direction Z, and the second virtual plane is perpendicular to the first direction X.

[0041] This embodiment proposes one type of surface shape for the reflecting surface 210. Specifically, the first virtual plane can be considered as a horizontal plane composed of a first direction X and a third direction Y. The intersection line L1 between the reflecting surface 210 and the horizontal plane is the cross-sectional line of the reflecting surface 210 with the horizontal plane as its cross-section, and this cross-sectional line is parabolic in shape. In this way, the reflecting surface 210 can achieve collimation of light in the first direction X.

[0042] The second virtual plane can be considered as a vertical plane composed of the second direction Z and the third direction Y. The intersection line L2 of the reflecting surface 210 and the vertical plane is the cross-sectional line of the reflecting surface 210 with the vertical plane as its cross-section, and this cross-sectional line is a free curve shape. In this way, the reflecting surface 210 can achieve the converging effect of light in the second direction Z (divergence angle control), and the parameters of the free curve can be adjusted according to actual needs, thereby flexibly setting the distribution of light in the vertical direction.

[0043] In this embodiment, the reflecting surface 210 of the reflector 200 is a free-form surface formed by fitting parabolas and free curves, thereby achieving an optical modulation effect where the reflecting surface 210 collimates light in the horizontal direction and flexibly modulates it in the vertical direction. On the one hand, the reflecting surface 210 can form a continuous smooth surface without obvious seams, which helps to further reduce the scattering loss of light during reflection, and thus further improves the light efficiency. On the other hand, free curves provide a high degree of design freedom, allowing for precise control of the divergence angle and light intensity distribution in the second direction Z, and optimization of the shape and uniformity of the light spot, thereby improving the quality of each illumination sub-region. Furthermore, compared to using free curve fitting in both directions for the reflecting surface 210, this method also helps to reduce the processing and manufacturing costs of the reflecting surface 210, and thus reduces the production cost of the adaptive high beam module 10.

[0044] Optionally, the free curve can be a NURBS curve, a Bézier curve, a polynomial curve, etc., and this application does not impose any restrictions on it.

[0045] Alternatively, without considering cost, as mentioned above, the reflecting surface 210 can also be a free-form surface formed by fitting free curves in both directions, and this application does not limit this.

[0046] In some embodiments, the light-emitting center of the light-emitting unit 110 coincides with the focal point of the reflective surface 210 along the first direction X.

[0047] It is understandable that the optical characteristics of a parabolic surface are such that light rays emitted from the focal point, after being reflected by the parabolic surface, will be emitted parallel to the axis of the parabola. In this embodiment, when the light emission center of the light-emitting unit 110 coincides with the focal point in the first direction X, the reflective surface 210 can maximize the collimation of the light rays from the light-emitting unit 110 into parallel light along the first direction X, thereby improving the boundary clarity and uniformity of the ADB light pattern. In addition, when the focal point in the first direction X is precisely aligned with the light emission center, the position of the illumination sub-area corresponding to each light-emitting unit 110 is more fixed in the horizontal direction, which can more accurately close the sub-area where oncoming vehicles or vehicles in front are located, thereby also improving the safety performance of adaptive high beams.

[0048] like Figures 1 to 3 As shown, in some embodiments, the lens 300 includes an incident light surface 310 and an exit light surface 320, both of which are convex surfaces.

[0049] In other words, lens 300 is a biconvex lens, and its optical power is determined by the curvature of both the incident surface 310 and the exit surface 320. The biconvex design distributes the total optical power across two surfaces, significantly reducing the radius of curvature of a single surface. This helps reduce spherical aberration and coma, thereby improving the uniformity of light intensity and shape accuracy of the illumination sub-region. Furthermore, by dispersing curvature, the biconvex design can reduce the center thickness of lens 300 while achieving the same optical power, further reducing the size of the adaptive high-beam module 10.

[0050] like Figure 1 and Figure 2 As shown and referenced Figure 3 In some embodiments, the focal point F of the lens 300 is located on one side edge of the reflective surface 210 near the light-emitting unit 110.

[0051] Using the focal point F of lens 300 as the object-side focal plane S, light rays emitted from any point on the object-side focal plane S will form parallel light after passing through lens 300. Therefore, in this embodiment, after the light emitted from the light-emitting unit 110 is reflected by the reflecting surface 210, in the horizontal direction (first direction X), the reflecting surface 210 configures the reflected light as parallel light; while in the vertical direction (second direction Z), the reflecting surface 210 first configures the reflected light as light with a preset divergence angle. Furthermore, the light with the preset divergence angle can be considered equivalent to light emitted from the object-side focal plane S, which will also form parallel light after exiting through lens 300. Thus, light shaping is also achieved in the vertical direction Z, thereby enabling the light emitted from lens 300 to form sharp-edged ADB light spots, such as rectangular stripe light spots, in the far field. This not only improves the quality and accuracy of the light spot but also helps reduce stray light loss, improve light efficiency, and reduce aberrations.

[0052] like Figure 1 As shown, in some embodiments, the light-incident surface 310 and the light-exiting surface 320 are both cylindrical surfaces, wherein the guide line P1 of the light-incident surface 310 extends along the first direction X, and the guide line P2 of the light-exiting surface 320 extends along the second direction Z; or, the guide line P1 of the light-incident surface 310 extends along the second direction Z, and the guide line P2 of the light-exiting surface 320 extends along the first direction X.

[0053] A cylindrical surface has light-reflecting capability only in the direction perpendicular to the directrix, and no light-reflecting capability along the directrix direction. In this embodiment, by setting the incident surface 310 and the exit surface 320 as two cylindrical surfaces with different directrix extension directions, on the one hand, the lens 300 can independently control the light in the first direction X and the second direction Z, achieving separation of refractive power directions. This is beneficial to further improve the modulation effect of the lens 300 on the light, significantly improve the light pattern control accuracy, enhance the light efficiency and light pattern stability, and ensure the effect of splicing multiple illumination sub-regions into an ADB light pattern. On the other hand, the optical parameters of the cylindrical surface are simpler, and the processing technology is more mature, which also helps to reduce mold development costs and improve processing yield.

[0054] In some embodiments, the curvature of the incident surface 310 and the curvature of the emitting surface 320 are not the same. For example, as Figure 1 As shown, taking the example of the incident light surface 310's collimator P1 extending along the second direction Z and the exiting light surface 320's collimator P2 extending along the first direction X, the curvature of the incident light surface 310 is greater than the curvature of the exiting light surface 320. In this case, the refractive power of the incident light surface 310 in the first direction X is greater than the refractive power of the exiting light surface 320 in the second direction Z, thus achieving differentiated light modulation.

[0055] This configuration allows the lens 300 to deflect light differently in the first direction X and the second direction Z, giving it different magnification in the first direction X and the second direction Z. This results in better projection of the ADB light pattern spot, which helps to improve the uniformity of the illumination sub-region, optimize the shape, and improve defects such as light pattern overlap and dark areas. At the same time, it can also ensure the splicing accuracy of adjacent illumination sub-regions in the horizontal direction.

[0056] like Figure 3 As shown, in some embodiments, the light-emitting unit 110 has a first end 111 near the lens 300, the first end 111 is deflected toward the side near the reflector 200, and the light-emitting surface of the light-emitting unit 110 is set at an angle to the optical axis of the lens 300.

[0057] This configuration optimizes the angle at which light from the light-emitting unit 110 is incident on the reflective surface 210, mitigating the problem of light loss due to the incident angle exceeding the effective receiving range of the reflective surface 210, thus improving reflection efficiency. Furthermore, the light reflected from the reflective surface 210 needs to enter the lens 300, and the light energy utilization rate of the lens 300 is closely related to the incident angle. By deflecting the light-emitting unit 110, the efficiency of reflected light entering the lens 300 can be improved, reducing Fresnel reflection losses. This improves luminous efficiency and reduces energy consumption. On the other hand, the deflection of the light-emitting unit 110 further shortens its size in the third direction (Y), enabling a more compact design and further reducing its overall volume.

[0058] In some embodiments, the reflector 200 includes a substrate (not shown) and a reflective layer (not shown) disposed on the surface of the substrate, the reflective layer being used to form a reflective surface 210, and the substrate being a polycarbonate substrate or a metal substrate.

[0059] Using polycarbonate as the substrate for the reflector 200 offers several advantages. First, polycarbonate is heat-resistant, preventing thermal risks. Second, its low density significantly reduces the weight of the reflector 200. Furthermore, the curved surface can be quickly manufactured using injection molding, improving manufacturing convenience and reducing costs. Using metal substrates such as aluminum alloys or magnesium alloys as the substrate for the reflector 200 offers several advantages. First, metals themselves have a certain reflectivity, which can be further enhanced after a reflective layer is applied, thus improving light efficiency and reducing scattering. Second, metal materials have high thermal conductivity and a low coefficient of thermal expansion, ensuring the curvature stability of the reflective surface 210 and maintaining long-term optical pattern accuracy. The reflective layer can be, for example, a silver-plated film or an aluminum-plated film.

[0060] Understandably, the reflector 200 can also be made directly from a metal with high reflectivity, such as silver or aluminum. In this case, the reflective surface is formed by high-precision polishing and grinding, without the need for an additional reflective coating.

[0061] Secondly, embodiments of this application provide a vehicle headlight, including the adaptive high beam module 10 described in the first aspect.

[0062] This design offers several advantages. First, compared to lens group designs in related technologies, the reflective design reduces light loss due to Fresnel reflection at the interface, improving luminous efficiency and thus increasing illuminance while reducing energy consumption. Second, the reflector 200 can fold the optical path, making it lighter and smaller than a lens, further reducing the size and weight of the adaptive high beam module 10 and meeting weight reduction requirements. Therefore, the adaptive high beam module 10 of this embodiment possesses the advantages of high luminous efficiency, small size, and low weight.

[0063] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An adaptive high beam module, characterized in that, include: The light source assembly includes a plurality of light-emitting units spaced apart along a first direction; A reflector, disposed on the light-emitting side of the light source assembly, includes multiple reflective surfaces, each light-emitting unit corresponding to one of the reflective surfaces. The reflective surfaces are configured to collimate the emitted light from the light-emitting unit into parallel light along a first direction, and are further configured to modulate the emitted light from the light-emitting unit into light with a preset divergence angle along a second direction. A lens is disposed on one side of the reflector along a third direction and located in the reflected light path of the reflector. The lens is configured to receive the reflected light from the reflective surface and project it into an illumination sub-region. Multiple illumination sub-regions are spliced ​​together along the first direction to form an ADB light pattern. The first direction, the second direction, and the third direction are perpendicular to each other.

2. The adaptive high beam module according to claim 1, characterized in that The intersection line between the reflective surface and the first virtual plane is a parabola, and the intersection line between the reflective surface and the second virtual plane is a free curve. The first virtual plane is perpendicular to the second direction, and the second virtual plane is perpendicular to the first direction.

3. The adaptive high beam module of claim 2, wherein, The light-emitting center of the light-emitting unit coincides with the focal point of the reflective surface along the first direction.

4. The adaptive high beam module of claim 1, wherein, The lens includes an incident light surface and an exit light surface, both of which are convex surfaces.

5. The adaptive high beam module of claim 4, wherein, The focal point of the lens is located on the side edge of the reflective surface near the light-emitting unit.

6. The adaptive high beam module of claim 4, wherein, Both the incident surface and the emitting surface are cylindrical, wherein: The directrix of the light-incident surface extends along the first direction, and the directrix of the light-exiting surface extends along the second direction. Alternatively, the line of the incident light surface extends along the second direction, and the line of the emitting light surface extends along the first direction.

7. The adaptive high beam module of claim 4, wherein, The curvature of the incident light surface and the curvature of the emitting light surface are different.

8. The adaptive high beam module of claim 1, wherein, The light-emitting unit has a first end near the lens, and the first end is deflected toward the side near the reflector; The light-emitting surface of the light-emitting unit is set at an angle to the optical axis of the lens.

9. The adaptive high beam module of claim 1, wherein, The reflector includes a substrate and a reflective layer disposed on the surface of the substrate, the reflective layer being used to form the reflective surface, and the substrate being a polycarbonate substrate or a metal substrate.

10. A vehicle lamp characterized by Includes the adaptive high beam module as described in any one of claims 1 to 9.

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