Adaptive high beam module and vehicle lamp

Abstract

The application provides an adaptive high beam module and a vehicle lamp, and relates to the technical field of vehicle lamps. The adaptive high beam module comprises: a light source assembly comprising a plurality of light emitting units arranged at intervals along a first direction; a first lens arranged on the light emitting side of the light source assembly, the first lens comprising a plurality of first light entry surfaces and a plurality of first light exit surfaces, the light emitting units, the first light entry surfaces and the first light exit surfaces being arranged one by one in correspondence; a second lens arranged on the side of the first lens away from the light source assembly; the first light entry surfaces and the first light exit surfaces are all free-form surfaces, the light emitted by each light emitting unit is incident into the first lens through the first light entry surface and is emitted from the first light exit surface to the second lens, the second lens receives the emitted light of the first light exit surface and projects it into an illumination sub-area, and a plurality of illumination sub-areas are spliced along the first direction to form an ADB light pattern. In the application, the ADB light pattern projected by the adaptive high beam module has the advantages of a large vertical field of view, small distortion, excellent dispersion control and good light uniformity.

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, and a lens assembly. The lens assembly refracts the light from the light source multiple times to project an ADB beam pattern in the far field. However, the aforementioned ADB beam patterns suffer from problems such as a small field of view, poor uniformity, distortion, and severe edge dispersion, which affect the reliability and stability of the ADB module's operation. Utility Model Content

[0004] This application proposes an adaptive high beam module and vehicle headlight, aiming to improve the problems of small vertical field of view, poor uniformity, severe distortion, and edge dispersion of the adaptive high beam module in related technologies.

[0005] The specific technical solution is as follows: In a first aspect, embodiments of this application propose an adaptive high beam module. The adaptive high beam module includes: a light source assembly, comprising a plurality of light-emitting units arranged at intervals along a first direction; a first lens disposed on the light-emitting side of the light source assembly, the first lens comprising a plurality of first light-incident surfaces and a plurality of first light-emitting surfaces, wherein the light-emitting units, the first light-incident surfaces, and the first light-emitting surfaces are arranged in a one-to-one correspondence; and a second lens disposed on the side of the first lens away from the light source assembly; wherein the first light-incident surfaces and the first light-emitting surfaces are both freeform surfaces, and the light emitted by each light-emitting unit is incident into the first lens through the first light-incident surface and exits into the second lens through the first light-emitting surface, the second lens receiving the light emitted from the first light-emitting surface and projecting it into an illumination sub-region, and the plurality of illumination sub-regions being spliced ​​together along the first direction to form an ADB beam pattern.

[0006] The adaptive high-beam module of this application, through the cooperation of a first lens and a second lens, projects the light from multiple light-emitting units into an ADB (Advanced Dimming and Backlighting) beam pattern. The first lens includes multiple first incident surfaces and multiple first exiting surfaces, which are a set of mutually cooperating freeform surfaces. By adjusting the angles of the incident and exiting rays in the vertical and horizontal directions, the distance of the exiting rays from the sagittal plane of the second lens is adjusted, thereby regulating the field of view, dispersion, distortion, and uniformity of the ADB beam pattern. In other words, the ADB beam pattern projected by the adaptive high-beam module of this application has the advantages of a large vertical field of view, low distortion, excellent dispersion control, and good illumination uniformity.

[0007] In some embodiments of this application, along a second direction, the focal plane of the second lens is located between the first light-incident surface and the first light-outceasing surface, and the second direction is perpendicular to the first direction.

[0008] After the light from the light-emitting unit is initially shaped by the first incident surface (freeform surface), it converges towards the focal plane S. This reduces the maximum incident angle of the light entering the second lens, minimizing lateral chromatic aberration and distortions such as trapezoidal distortion caused by excessive incident angles or angular differences. Meanwhile, the first emitting surface performs a second freeform surface correction on the pre-converged light to compensate for residual chromatic aberration, achieving two-stage aberration suppression. This further improves the edge dispersion and distortion problems of the light pattern.

[0009] The precise positioning of the focal plane allows for accurate determination of the deviation distance between the light rays emitted from the first light-emitting surface and the focal plane. This enables targeted adjustment of the curvature of the freeform surface of the first light-emitting surface, ensuring that light rays with different deviation distances, after being modulated by the first light-emitting surface, enter the second lens at a more consistent angle. This guarantees uniform brightness distribution across the sub-regions projected by the second lens, reducing unevenness in brightness caused by angular deviations. Consequently, further improvements can be made to the uniformity of the light pattern.

[0010] Furthermore, once the focal plane is determined, the distance by which the emitted light from the first emitting surface deviates from the focal plane becomes a known and quantifiable optical parameter. Thus, the freeform surface of the first lens, such as the first emitting surface, can be designed with constraints based on this parameter. This also improves the ease of manufacturing, design efficiency, and design accuracy of the first lens.

[0011] In some embodiments of this application, the first lens includes a substrate and light-incident and light-exit portions disposed on opposite sides of the substrate along the second direction. The light-incident portions form the plurality of first light-incident surfaces, and the light-exit portions form the plurality of first light-exit surfaces. The focal plane of the second lens is located on the side surface of the substrate near the light-incident portion, or the focal plane of the second lens is located on the side surface of the substrate near the light-exit portion.

[0012] This setup offers several advantages. First, by fixing the substrate as a reference, the relative positions of the first incident light surface, the first exiting light surface, and the second lens are more stable. This reduces problems caused by misalignment, such as light beam deviation at the first incident light surface or angle deviation between the light beam emitted from the first exiting light surface and the incident light angle of the second lens. This ensures the stability of core optical system performance, including beam pattern accuracy, distortion, dispersion improvement, and uniformity. Second, the substrate provides a unified mounting plane and positioning reference, allowing the second lens to be positioned based on the substrate of the first lens. This simplifies error control in multi-component assembly, reduces accumulated errors, and integrates optical calibration with mechanical assembly, thereby improving the consistency, reliability, and accuracy of the adaptive high-beam module assembly. Third, the relative positional relationship between the second and first lenses can be adjusted directly using the substrate surface as a reference, without relying on optical surfaces. This makes the debugging process more intuitive and quantifiable, further shortening the debugging cycle and improving debugging accuracy and optical calibration efficiency.

[0013] In some embodiments of this application, the first lens includes a substrate and light-incident and light-exit portions disposed on opposite sides of the substrate along a second direction, the second direction being perpendicular to the first direction; the light-incident portion extends along the first direction, the light-incident portion includes a first surface on a side away from the substrate, the first surface being a smooth free-form surface, the first surface being formed by splicing together a plurality of first light-incident surfaces, the plurality of first light-incident surfaces having the same shape; the light-exit portion includes a plurality of sub-light-exit units, each of the sub-light-exit units forming a first light-exit surface on a surface on a side away from the substrate.

[0014] This configuration offers several advantages. First, during the design phase, only the shape of a single first light-incident surface needs to be optimized for mass production and application to all first light-incident surfaces, thus improving the design efficiency of the light-incident section. During manufacturing, the mold can utilize repetitive, standardized cavity machining, avoiding the need for separate molds for different shapes of first light-incident surfaces, thereby reducing mold complexity and cost and improving mass production yield. Simultaneously, the smooth surface of the first surface helps reduce light efficiency loss and improve energy consumption. Second, each sub-light-emitting unit of the light-emitting section forms an independent optical modulation module, which can perform secondary shaping and correction on the residual deviations of the light emitted by each unit after initial shaping by the first surface. By designing each sub-light-emitting unit individually, the final accuracy and beam pattern of a single beam can be guaranteed. Furthermore, the design and manufacturing costs of both the light-incident and light-emitting sections can be balanced, while also ensuring beam pattern efficiency and optical performance.

[0015] In some embodiments of this application, the first surface includes a first sub-surface and a second sub-surface arranged along a third direction. The second sub-surface is connected to the first sub-surface. Along the direction from near the light-emitting unit to away from the light-emitting unit, the second sub-surface extends obliquely and bends from the side near the first sub-surface to the side away from the first sub-surface. The first direction, the second direction, and the third direction are perpendicular to each other. Along the third direction, the light-emitting center of the light-emitting unit coincides with the optical axis of the second lens, and the optical axis of the second lens passes through the second sub-surface.

[0016] This setup has two advantages. First, the first sub-surface is positioned above the second sub-surface. Light rays incident from the first sub-surface are ultimately deflected downwards, while light rays incident from the second sub-surface are ultimately deflected upwards. Because the second sub-surface receives more light than the first, the angle of deflection at the upper boundary of the final projected illumination sub-area is larger in the vertical direction, while the angle at the lower boundary is smaller. This asymmetrical setup significantly elongates the upper half of the light pattern in the illumination sub-area, ensuring a larger illumination range in the height direction. The lower half of the light pattern is not elongated, resulting in a higher lower boundary position for the pixel light pattern. This helps prevent the high beam from affecting the visibility of distant road surfaces due to the high beam illuminating a position too close to the vehicle. Second, the second sub-surface, due to its optical axis passing through it and its tilted design, allows for targeted modulation of the light refraction angle. Through curvature optimization of the tilted surface, it ensures that the light converges precisely to the focal plane after refraction, reducing angular deviation in the core illumination area and thus helping to improve the upward distortion problem. Thirdly, the optical axis passes through the inclined second sub-face, and the inclined freeform surface can differentially control light of different wavelengths, which is also beneficial to further improve the dispersion problem. In addition, through the partitioned design of the first and second sub-faces, the curvature can be optimized for the large-angle light received by each, which is also beneficial to reduce the energy loss of large-angle light and improve the lighting efficiency.

[0017] In some embodiments of this application, the intersection line of the first surface and the first reference surface is a straight line, the intersection line of the first surface and the second reference surface is a free curve, the first reference surface is perpendicular to a third direction, the second reference surface is perpendicular to the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0018] This setup, firstly, ensures that after modulation by the first incident surface, each light-emitting unit exhibits high repeatability in light propagation angle and intensity distribution along the first direction, thereby improving the overall uniformity of the ADB light pattern along the first direction and reducing splicing color differences. Secondly, the first surface possesses the ability to flexibly control light within the vertical plane. By adjusting the refraction angle of the free curve through the steep curvature of specific regions, precise light control along the third direction can be achieved, optimizing the upper and lower field-of-view performance and improving upper and lower distortion and dispersion. Furthermore, the aforementioned fitting method avoids the high complexity of fully freeform surface design while ensuring that the performance of the core light control direction (the third direction) is not compromised, achieving a balance between standardization and personalization. This also helps to balance optical performance with manufacturing costs and precision.

[0019] In some embodiments of this application, the plurality of sub-light-emitting units include a central sub-unit and a first sub-unit and a second sub-unit disposed at both ends along the first direction; along the first direction, the distance between the central sub-unit and the first sub-unit is not the same as the distance between the central sub-unit and the second sub-unit, and the optical axis of the second lens passes through the central sub-unit; the distance between each of the first light-emitting surfaces from the central sub-unit to the first sub-unit and the substrate along the second direction gradually increases, and / or the distance between each of the first light-emitting surfaces from the central sub-unit to the second sub-unit and the substrate along the second direction gradually increases.

[0020] This configuration offers several advantages. First, the distance between the first light-emitting surface of the central sub-unit and the substrate is minimized. Its curved surface design allows for more precise control of the refraction angle of light near the optical axis, reducing spherical aberration or coma and resulting in a sharper central spot with more uniform brightness. Second, the progressively larger structural design allows for targeted adjustment of the refraction path of large-angle light, compensating for or even eliminating field curvature. This ensures a more consistent brightness distribution across all illumination sub-regions, improving the uniformity of the spliced ​​ADB beam pattern in the first direction and eliminating the problem of a bright center and dark edges. Furthermore, it helps ensure clear boundaries and regular contours for each illumination sub-region at the edges, enhancing anti-glare accuracy. Additionally, since the first lens has been designed to eliminate large-angle field curvature, the second lens does not need to perform complex field curvature correction, thus simplifying its structural design and reducing system costs.

[0021] In some embodiments of this application, the width of each of the first light-emitting surfaces from the central subunit to the first subunit gradually increases, and / or the width of each of the first light-emitting surfaces from the central subunit to the second subunit gradually increases.

[0022] This setup offers several advantages. First, by increasing the width of the first light-emitting surface of the edge sub-light-emitting unit, the light-emitting area can be increased, allowing more light to pass through this area and compensating for energy loss, thus improving the uniformity of brightness across the entire field of view. Second, when the distances between the central sub-unit and the first and second sub-units at the beginning and end are unequal, the characteristics of the edge light rays in different directions differ. In this case, the width gradient change can be designed as asymmetrical, thus matching the asymmetrical light pattern requirements and improving the coverage of the effective illumination area. Third, large-angle light rays are prone to beam widening due to large refraction angles, which may result in overlapping dark areas when adjacent illumination sub-regions are stitched together. By increasing the width of the first light-emitting surface with a gradient, the angle of the emitted light rays at the edge can be adjusted specifically, ensuring that the spot width of each illumination sub-region on the focal plane is consistent, resulting in clearer boundaries during stitching and improving the problem of dark areas during stitching.

[0023] In some embodiments of this application, the plurality of light-emitting units includes a first light-emitting unit opposite to the central subunit. The light from the first light-emitting unit is emitted sequentially from the first surface and the first light-emitting surface of the central subunit to form a refracted beam. The optical axis of the second lens coincides with the light-emitting center of the first light-emitting unit. Along the first direction, the refracted beam is deflected toward the direction closer to the optical axis, and the deflection angle is greater than or equal to -1.5° and less than or equal to 1.5°; The central subunit includes a first surface and a second surface arranged opposite each other along the third direction. The second surface is located above the first surface. Along the direction from the first surface to the second surface, the deflection angle of the refracted beam relative to the optical axis gradually decreases from 3° to 0° and gradually increases from 0° to 1°.

[0024] This setup serves two purposes. First, it ensures that the light in the central area has almost no significant lateral deviation, providing a stable reference for the stitching of adjacent lighting sub-areas. This improves the reliability and accuracy of ADB light pattern stitching, while significantly enhancing the continuity and uniformity of the ADB light pattern along the lateral direction. Second, it improves the convergence accuracy of light in the third direction, strengthens the energy concentration in the central area, and increases the central brightness. Furthermore, it optimizes near-field lighting coverage, avoids dark areas below, and balances high-altitude lighting with anti-glare.

[0025] Secondly, embodiments of this application propose a vehicle headlight, including the adaptive high beam module described in the first aspect.

[0026] The vehicle headlights of this embodiment use the adaptive high beam module described in the first aspect, thereby enabling the ADB light pattern projected by the vehicle headlights of this embodiment to have the advantages of a large vertical field of view, small distortion, excellent dispersion control, and good illumination uniformity. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the lighting effect of an adaptive high beam module in a related technology. Figure 2 This is a schematic diagram of the structure of the adaptive high beam module provided in the embodiments of this application; Figure 3 This is a structural schematic diagram of the adaptive high beam module provided in an embodiment of this application from another perspective. Figure 4 A side view of the adaptive high beam module provided in an embodiment of this application; Figure 5 This is a top view of the adaptive high beam module provided in the embodiments of this application; Figure 6 Another side view of the adaptive high beam module provided in the embodiments of this application; Figure 7 Another top view of the adaptive high beam module provided in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the first lens provided in an embodiment of this application; Figure 9 A schematic diagram of the structure of the first lens provided in an embodiment of this application from another perspective; Figure 10 A schematic diagram of light emission from the central subunit along the first direction, provided in an embodiment of this application; Figure 11 A schematic diagram of light emission from the central subunit along the second direction, provided in an embodiment of this application; Figure 12 This is a schematic diagram of the light pattern simulation of the adaptive high beam module provided in the embodiments of this application; Figure 13 This is a schematic diagram illustrating the lighting effect of the adaptive high beam module provided in an embodiment of this application.

[0028] The annotations in the attached figures are explained as follows: 10. Adaptive high beam module; 100, Light source assembly; 110, Light-emitting unit; 110a, First light-emitting unit; 200, First lens; 201, First light-incident surface; 202, First light-exiting surface; 210, Substrate; 220, Light-incident section; 221, First surface; 2211, First sub-surface; 2212, Second sub-surface; 230, Light-exiting section; 231, Sub-light-exiting unit; 2311, Central sub-unit; 2311a, First surface; 2311b, Second surface; 2312, First sub-unit; 2313, Second sub-unit; 300, second lens; 310, second incident surface; 320, second exit surface; S1, focal plane; L, optical axis. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] In related technologies, ADB modules consist of a light source, a condenser, and a lens assembly. The lens assembly refracts the light from the light source multiple times to project an ADB beam pattern in the far field. However, because the light path is collected by the condenser, the vertical field of view is relatively small. Multiple refractions in the light path lead to uneven energy distribution and low uniformity of the projected beam. Furthermore, when the light is deflected at large angles, astigmatism and field curvature correction are inadequate, resulting in severe beam pattern distortion and edge dispersion.

[0034] like Figure 1 As shown, Figure 1 This is a schematic diagram illustrating the ADB light pattern effect when an ADB module is illuminated, according to related technologies. Figure 1 It can be seen that the uniformity of the light spot in this ADB light pattern is poor, resulting in low uniformity of the spliced ​​light pattern. At the same time, some light spots are severely distorted, and the edges of the light spots are severely dispersed.

[0035] Based on the above problems, this application proposes an adaptive high beam module and vehicle headlight, aiming to improve the problems of small vertical field of view, poor uniformity, distortion and severe edge dispersion of the light pattern of the adaptive high beam module in the related technology.

[0036] like Figures 2 to 5 As shown, 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 first lens 200, and a second lens 300. The light source assembly 100 includes a plurality of light-emitting units 110 arranged at intervals along the first direction Y. A first lens 200 is disposed on the light-emitting side of the light source assembly 100. The first lens 200 includes a plurality of first light-incident surfaces 201 and a plurality of first light-emitting surfaces 202. The light-emitting units 110, the first light-incident surfaces 201, and the first light-emitting surfaces 202 are arranged in a one-to-one correspondence. A second lens 300 is disposed on the side of the first lens 200 away from the light source assembly 100. The first light-incident surfaces 201 and the first light-emitting surfaces 202 are both free-form surfaces. The light emitted by each light-emitting unit 110 is incident into the first lens 200 through the first light-incident surface 201 and exits into the second lens 300 through the first light-emitting surface 202. The second lens 300 receives the light emitted from the first light-emitting surface 202 and projects it into an illumination sub-region. The plurality of illumination sub-regions are spliced ​​along the first direction Y to form an ADB light pattern.

[0037] In this application, the adaptive high beam module 10 includes a light source assembly 100, a first lens 200, and a second lens 300. The adaptive high beam module 10 is an ADB module, which can realize zone-controlled adaptive high beam lighting to avoid glare to vehicles or pedestrians ahead, while maximizing illumination of other areas.

[0038] The light source assembly 100 includes multiple light-emitting units 110, which emit light. These units can be LED (Light Emitting Diode) chips or other light-emitting devices that can be independently controlled to light up or dim; this application does not limit the specific type of light emitted. The adaptive high beam module 10 can receive signals from the vehicle's ADB control system and can accurately 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 achieving the "adaptive" zone control ADB function. The light-emitting units 110 are arranged along a first direction Y, 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, a second direction X is defined as the vehicle's front-rear direction, and also as the thickness direction of the first lens 200 and the second lens 300; a third direction Z is defined as the vehicle's height direction, and also as the height direction of the first lens 200 and the second lens 300.

[0039] The first lens 200 can be made of materials such as polymethacrylimide (PMMI), polymethyl methacrylate (PMMA), and polycarbonate (PC), thereby reducing the manufacturing cost of the adaptive high beam module 10. The first lens 200 includes multiple first light-incident surfaces 201 and multiple first light-outceasing surfaces 202, with each light-emitting unit 110, first light-incident surface 201, and first light-outceasing surface 202 corresponding to a specific light-emitting unit. That is, each light-emitting unit 110 independently corresponds to one first light-incident surface 201 and one first light-outceasing surface 202, effectively equipping each light-emitting unit 110 with a dedicated optical channel for focusing, collimating, and shaping light, ensuring the independence of each illumination sub-region.

[0040] In each group, the first incident surface 201 and the first exit surface 202 are a pair of cooperating freeform surfaces. These freeform surfaces offer extremely high design freedom, allowing for independent and precise guidance of light rays from each channel. They enable non-linear, fine-tuning of the incident and refraction angles of the light rays, directing them towards a specific area of ​​the second lens 300, thus laying a precise angular foundation for subsequent projection by the second lens 300. Within a single channel, the freeform surface can pre-correct some distortion, dispersion, and uniformity for the corresponding field of view area, forming a light spot.

[0041] The second lens 300 is a projection lens. It can also be made of materials such as polymethyl methacrylate (PMMI), polymethyl methacrylate (PMMA), or polycarbonate (PC), further reducing the manufacturing cost of the adaptive high beam module 10. The second lens 300 can receive light rays emitted from all the first light-emitting surfaces 202 and project multiple pre-shaped and pre-corrected light spots into the far field, forming corresponding illumination sub-regions. These multiple illumination sub-regions are stitched together in the far field along the first direction Y (horizontal) to ultimately combine into a complete, zone-controllable ADB beam pattern.

[0042] The adaptive high beam module 10 of this application embodiment projects the light from multiple light-emitting units 110 into an ADB light pattern through the cooperation of a first lens 200 and a second lens 300. The first lens 200 includes multiple first light-incident surfaces 201 and multiple first light-outceasing surfaces 202. The first light-incident surfaces 201 and the first light-outceasing surfaces 202 are a set of mutually cooperating free-form surfaces. By adjusting the angles of the incident light and the outgoing light in the vertical direction (third direction Z) and the horizontal direction (first direction Y), the distance of the outgoing light from the sagittal surface of the second lens 300 is adjusted, thereby adjusting the field of view, dispersion, distortion, and uniformity between light spots of the ADB light pattern.

[0043] First, the adaptive high-beam module 10 of this application embodiment does not require a concentrator. Instead, it converges the incident light from the light-emitting unit 110 through each first light-incident surface 201, and then emits the light through each first light-emitting surface 202. By flexibly designing the curvature, rate of curvature change, and tilt angle of each first light-incident surface 201 and first light-emitting surface 202 in the third direction Z (vertical direction), directional refraction of light can be achieved. After being refracted by the second lens 300, these rays are projected to the far upper and lower edge regions, which helps to widen the overall field of view and thus increase the vertical field of view.

[0044] Secondly, at the edge of each illumination sub-region, by designing the curvature of the first light-incident surface 201 and the first light-outceasing surface 202, light can be incident on the second lens 300 at a small angle, reducing the deviation distance from the sagittal surface of the second lens 300, reducing the refraction difference of light of different wavelengths, and thus helping to alleviate the dispersion problem at the edge.

[0045] Furthermore, each of the first light-incident surfaces 201 and first light-outceasing surfaces 202 of the first lens 200 can perform distortion correction on the light within their respective channels. On one hand, distortion compensation can be set on each of the first light-incident surfaces 201 and 202 of the first lens 200. Simultaneously, through the local fine modulation effect of the freeform surface, the imaging ratio of each point within each illumination sub-region is ensured to be consistent, thereby improving the distortion problem in each illumination sub-region. On the other hand, due to the high degree of freedom of the freeform surface, the deviation distance between the light rays in channels located at different positions and the sagittal surface of the second lens 300 can be set within a preset range, making the magnification of the light rays in each illumination sub-region of the second lens 300 tend to be consistent, thereby improving the distortion problem after the various illumination sub-regions are stitched together.

[0046] Furthermore, the first incident surface 201 and the first exit surface 202 of the freeform surface can accurately redistribute the light emitted by the light source, making the brightness distribution of the light spot emitted from each first exit surface 202 more uniform. At the same time, when splicing the various light spots, the edge brightness of adjacent areas can be transitioned by optimizing the parameters of the freeform surface, improving the abrupt change in brightness at the splicing point, which is also conducive to improving the uniformity of the ADB light pattern.

[0047] Therefore, in each optical channel of the adaptive high-beam module 10 of this application embodiment, a pair of mutually cooperating freeform surfaces (the first incident surface 201 and the corresponding first exit surface 202) are used to adjust the distance of the emitted light rays from the sagittal plane of the second lens 300, thereby achieving adjustment of the ADB light pattern's field of view, dispersion, distortion, uniformity, etc. That is, the ADB light pattern projected by the adaptive high-beam module 10 of this application embodiment has the advantages of a large vertical field of view, small distortion, excellent dispersion control, and good illumination uniformity.

[0048] like Figure 4 and Figure 5 As shown, in some embodiments of this application, along the second direction X, the focal plane S1 of the second lens 300 is located between the first light-incident surface 201 and the first light-outceasing surface 202, and the second direction X is perpendicular to the first direction Y.

[0049] The focal plane S1 of the second lens 300 refers to the plane passing through the focal point of the second lens 300 and perpendicular to the second direction X. The focal plane S1 of the second lens is the reference for the image formed by the projection of light through it. With this setting, the distance of the light rays emitted from the first light-emitting surface 202 from the focal plane S1 can be accurately determined, thereby further optimizing the uniformity of the light pattern and issues such as dispersion.

[0050] Specifically, after the light from the light-emitting unit 110 is initially shaped by the first incident surface 201 (freeform surface), it converges towards the focal plane S1. This reduces the maximum incident angle of the light entering the second lens 300, thereby reducing lateral chromatic aberration and distortions such as trapezoidal distortion caused by excessive incident angles or angular differences. Meanwhile, the first emitting surface 202 performs a second freeform surface correction on the pre-converged light to compensate for residual chromatic aberration, achieving two-stage aberration suppression. Thus, further improvements can be made to the edge dispersion and distortion problems of the light pattern.

[0051] The focal plane S1 serves as a virtual image plane, and its positioning allows for precise determination of the deviation distance between the light rays emitted from the first light-emitting surface 202 and the focal plane S1. This enables the freeform surface of the first light-emitting surface 202 to be selectively adjusted for local curvature, ensuring that light rays with different deviation distances, after being modulated by the first light-emitting surface 202, enter the second lens 300 at a more consistent angle. This guarantees uniform brightness distribution across the sub-regions projected by the second lens 300, reducing uneven brightness caused by angular deviations. Consequently, the uniformity of the light pattern can be further improved.

[0052] Furthermore, once the focal plane S1 is determined, the distance by which the emitted light from the first light-emitting surface 202 deviates from the focal plane S1 becomes a known and quantifiable optical parameter. Thus, the freeform surface of the first lens 200, such as the first light-emitting surface 202, can be designed with constraints based on this parameter. This also helps to improve the ease of manufacturing, design efficiency, and design accuracy of the first lens 200.

[0053] like Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, in some embodiments of this application, the first lens 200 includes a substrate 210 and light-incident portions 220 and light-outcident portions 230 disposed on opposite sides of the substrate 210 along the second direction X. The light-incident portions 220 form a plurality of first light-incident surfaces 201, and the light-outcident portions 230 form a plurality of first light-outcident surfaces 202. The focal plane S1 of the second lens 300 is located on the side surface of the substrate 210 near the light-incident portions 220.

[0054] The substrate 210 is the main body of the first lens 200. The substrate 210 can be used to fix and connect with external components such as the housing of a vehicle lamp, thereby realizing the installation and fixation of the first lens 200. The orthogonal projection of the substrate 210 in the second direction X covers the orthogonal projection of the light-incident portion 220 and the light-exit portion 230 in the second direction X. In this way, the part of the edge of the substrate 210 that extends beyond the light-incident portion 220 and the light-exit portion 230 can be used to design structures such as mounting holes and mounting posts to facilitate the connection between the substrate 210 and the vehicle lamp housing.

[0055] The light-incident section 220 is used to form multiple first light-incident surfaces 201, and the light-emitting section 230 is used to form multiple first light-emitting surfaces 202. The light-incident section 220, the substrate 210, and the light-emitting section 230 can be manufactured using an integral molding process. Optionally, the materials of each component can be the same or not exactly the same, and the specific design can be flexibly adjusted according to factors such as heat dissipation, cost, light transmittance, and precision.

[0056] In this embodiment, the focal plane S1 of the second lens 300 is located on the side surface of the substrate 210 near the light-incident portion 220. That is, one side surface of the substrate 210 of the second lens 300 is also used as the focal plane S1 of the second lens 300. The substrate 210 serves as a mounting reference, and its connection relationship with external components (such as a vehicle lamp housing) directly determines the spatial positioning of the first lens 200. By placing the focal plane S1 on the side surface of the substrate 210 near the light-incident portion 220, it is equivalent to solidifying the focal plane S1 of the second lens 300, resulting in extremely high relative positional accuracy between the focal plane S1 and the first light-exiting surface 202 and the first light-incident surface 201.

[0057] This configuration has two advantages. First, by fixing the substrate as a reference, the relative positions of the first light-incident surface 201, the first light-exiting surface 202, and the second lens 300 are more stable. This reduces problems caused by misalignment, such as light receiving deviation at the first light-incident surface 201 and deviation in the incident angle between the light emitted from the first light-exiting surface 202 and the second lens 300. This ensures the stability of the core performance of the optical system (such as beam pattern accuracy, distortion, dispersion improvement, and uniformity). Second, the substrate 210 provides a unified mounting plane and positioning reference, allowing the second lens 300 to be positioned based on the substrate 210 of the first lens 200. This simplifies error control in multi-component assembly, reduces accumulated errors, and integrates optical calibration with mechanical assembly. Consequently, it improves the consistency, reliability, and accuracy of the adaptive high-beam module 10 assembly. Thirdly, the relative positional relationship between the second lens 300 and the first lens 200 can be adjusted directly using the surface of the substrate 210 as a reference, without relying on the optical surface. This makes the debugging process more intuitive and quantifiable, which in turn helps to shorten the debugging cycle and improve the debugging accuracy and the efficiency of optical calibration.

[0058] like Figures 2 to 5 As shown, in some other embodiments of this application, the focal plane S1 of the second lens 300 is located on the side surface of the substrate 210 near the light-emitting part 230.

[0059] The difference between this embodiment and the previous embodiment is that the focal plane S1 of the second lens 300 is set on the other side surface of the substrate 210. This arrangement has two advantages: First, it reduces problems such as light beam deviation at the first incident surface 201 and angle deviation between the light beam emitted from the first emitting surface 202 and the incident light beam at the second lens 300 caused by misalignment during installation, thereby ensuring the stability of the core performance of the optical system (such as beam pattern accuracy, distortion, dispersion improvement, and uniformity). Second, the substrate 210 provides a unified mounting plane and positioning reference, allowing the second lens 300 to be positioned based on the substrate 210 of the first lens 200. This simplifies error control in multi-component assembly, reduces accumulated errors, and integrates optical calibration with mechanical assembly, thereby improving the consistency, reliability, and accuracy of the adaptive high-beam module 10 assembly. Thirdly, the relative positional relationship between the second lens 300 and the first lens 200 can be adjusted directly using the surface of the substrate 210 as a reference, without relying on the optical surface. This makes the debugging process more intuitive and quantifiable, which in turn helps to shorten the debugging cycle and improve the debugging accuracy and the efficiency of optical calibration.

[0060] like Figure 2 , Figure 3 and Figure 8 As shown, in some embodiments of this application, the light-incident portion 220 extends along the first direction Y. The light-incident portion 220 includes a first surface 221 on the side opposite to the substrate 210. The first surface 221 is a smooth free-form surface. The first surface 221 is formed by splicing together a plurality of first light-incident surfaces 201. The plurality of first light-incident surfaces 201 have the same shape. The light-emitting portion 230 includes a plurality of sub-light-emitting units 231. Each sub-light-emitting unit 231 forms a first light-emitting surface 202 on the side surface opposite to the substrate 210.

[0061] This embodiment proposes one structural configuration for the light-incident section 220 and the light-emitting section 230. For the light-incident section 220, multiple first light-incident surfaces 201 are spliced ​​along the first direction Y to form the first surface 221 of the light-incident section 220, and the first surface 221 is a smooth free-form surface. That is, the multiple first light-incident surfaces 201 have the same shape, and the curvature parameters and dimensions of their free-form surfaces can be standardized. During the design phase, only the shape of a single first light-incident surface 201 needs to be optimized, which can then be applied to all first light-incident surfaces 201 in batches, thereby improving the design efficiency of the light-incident section 220. During the manufacturing phase, the mold can use repetitive standardized cavity processing, avoiding the need for separate molds for first light-incident surfaces 201 of different shapes, thus also helping to reduce mold complexity and cost, and improve mass production yield. Furthermore, the first surface 221 is a smooth surface without obvious splicing edges, meaning that the curvature of the transition area between adjacent first light-incident surfaces 201 changes continuously, which also helps to reduce light efficiency loss and improve energy consumption.

[0062] It should be noted that although multiple first light-incident surfaces 201 are spliced ​​together to form a first surface 221, the first light-incident surface 201, the first light-emitting surface 202, and the light-emitting unit 110 still have a one-to-one correspondence. There is no obvious edge dividing line between two adjacent first light-incident surfaces 201.

[0063] The light-emitting section 230 includes multiple sub-light-emitting units 231, each of which forms a first light-emitting surface 202 on its surface opposite to the substrate 210. That is, each sub-light-emitting unit 231 of the light-emitting section 230 forms an independent optical modulation module, capable of secondary shaping and correction of residual deviations after the initial shaping of the light from each light-emitting unit 110 by the first surface 221. By individually designing each sub-light-emitting unit 231, the final accuracy and spot effect of a single beam of light can be guaranteed.

[0064] Furthermore, the design of the light-incident section 220 as an integral structure and the light-exit section 230 as a separate modular structure can take into account the design and manufacturing costs of the light-incident section 220 and the light-exit section 230, while also helping to ensure light spot efficiency and optical performance.

[0065] like Figure 4 , Figure 8 As shown, in some embodiments of this application, the first surface 221 includes a first sub-surface 2211 and a second sub-surface 2212 arranged along a third direction Z. The second sub-surface 2212 is connected to the first sub-surface 2211. Along the direction from near the light-emitting unit 110 to away from the light-emitting unit 110, the second sub-surface 2212 extends obliquely and bends from the side near the first sub-surface 2211 to the side away from the first sub-surface 2211. Along the third direction Z, the light-emitting center of the light-emitting unit 110 coincides with the optical axis L of the second lens 300. The optical axis L of the second lens 300 passes through the second sub-surface 2212.

[0066] In this embodiment, the first surface 221 includes a first sub-surface 2211 and a second sub-surface 2212. Of the light emitted by the light-emitting unit 110, most of the central light rays and a portion of the edge light rays propagating along the optical axis L are received by the second sub-surface 2212, while the remaining small portion of the light rays is received by the first sub-surface 2211. That is, the emitted light rays from the light-emitting unit 110 are received by both sub-surfaces, and the second sub-surface 2212 receives more light rays than the first sub-surface 2211.

[0067] Furthermore, since the second sub-face 2212 extends at an angle and bends, the convergence angle of the second sub-face 2212 with respect to light rays in the third direction Z is greater than that of the first sub-face 2211 in the same direction. For example, along the third direction Z, the convergence angle of the second sub-face 2212 with respect to light rays ranges from 0° to 20°, while the first sub-face 2211 converges naturally.

[0068] With this configuration, firstly, the first sub-surface 2211 is located above the second sub-surface 2212. Light rays incident from the first sub-surface 2211 are ultimately deflected downwards, while light rays incident from the second sub-surface 2212 are ultimately deflected upwards. Since the second sub-surface 2212 receives more light than the first sub-surface 2211, the angle of deflection at the upper boundary of the ultimately projected illumination sub-area in the vertical direction is larger, while the angle of deflection at the lower boundary is smaller. This is an asymmetrical configuration, and the upper half of the light pattern of the illumination sub-area is significantly elongated, forming a larger illumination range of the pixel light pattern in the height direction. The lower half of the light pattern of the illumination sub-area is not elongated, so the lower boundary of the pixel light pattern is positioned higher, which helps to prevent the high beam from affecting the observation of the distant road surface due to the high beam illuminating a position too close to the front of the vehicle. In other words, by controlling the relative position of the light-emitting center of the light-emitting unit 110 with the first sub-surface 2211 and the second sub-surface 2212, the upper and lower boundaries of the projected illumination sub-area can be controlled.

[0069] Secondly, because the optical axis L passes through the second sub-surface 2212 and it is designed with an inclination, the refraction angle of light can be specifically modulated. By optimizing the curvature of the inclination surface, it is ensured that the light converges precisely to the focal plane S1 after refraction, reducing the angular deviation of the core illumination area, which helps to improve the distortion problem in the third direction Z. Thirdly, since the optical axis L passes through the inclination second sub-surface 2212, the inclination freeform surface can differentially control light of different wavelengths, which also helps to further improve the dispersion problem.

[0070] Furthermore, if a single curved surface is used, the insufficient curvature of the surface can easily lead to uncontrolled refraction angles of some light rays. By using a partitioned design for the first sub-surface 2211 and the second sub-surface 2212, the curvature can be optimized for the large-angle light rays received by each sub-surface, which also helps to reduce energy loss of large-angle light rays and improve lighting efficiency.

[0071] Optionally, the first sub-surface 2211 is a plane, and the second sub-surface 2212 is a freeform surface. The angle (inclination angle) between the connecting lines on both sides of the second sub-surface 2212 and the third direction Z can be 5°, 6°, 7°, 8°, etc., and can be flexibly designed according to the required convergence angle.

[0072] like Figure 8 As shown, in some embodiments of this application, the intersection line of the first surface 221 and the first reference surface is a straight line, the intersection line of the first surface 221 and the second reference surface is a free curve, the first reference surface is perpendicular to the third direction Z, the second reference surface is perpendicular to the first direction Y, and the first direction Y, the second direction X and the third direction Z are perpendicular to each other.

[0073] This embodiment proposes one specific surface structure for the first surface 221. The first reference surface is a horizontal plane, and the second reference surface is a vertical plane. The intersection line between the first surface 221 and the first reference surface is a straight line, that is, along the first direction Y, the first surface 221 has the characteristic of linear extension, which can ensure that when multiple first light-incident surfaces 201 with the same shape are spliced ​​along the first direction Y, there is no obvious bending or abrupt change.

[0074] The intersection of the first surface 221 and the second reference surface is a freeform curve. This indicates that in the third direction Z, the surface shape of the first surface 221 is a freeform surface, and a surface with arbitrary curvature can be designed according to the light distribution characteristics of the light-emitting unit 110 in the third direction Z to precisely control the light refraction path at different XZ positions. In other words, in this embodiment, the first surface 221 is a freeform surface formed by fitting a straight line and a freeform surface.

[0075] This setup, firstly, ensures that each light-emitting unit 110, after being modulated by the first incident surface 201, exhibits high repeatability in its light propagation angle and intensity distribution along the first direction Y. This improves the overall uniformity of the ADB light pattern along the first direction Y and reduces splicing color differences. Secondly, the first surface possesses the ability to flexibly control light within the XZ plane. By adjusting the refraction angle of the free curve through the steep curvature of specific regions, precise light control along the third direction Z can be achieved, optimizing the upper and lower field-of-view performance and improving upper and lower distortion and dispersion. Furthermore, the aforementioned fitting method avoids the high complexity of a fully freeform surface design while ensuring that the performance of the core light control direction (the third direction Z) is not compromised, achieving a balance between standardization and personalization. This also helps to balance optical performance with manufacturing costs and precision.

[0076] Optionally, the intersection of the first surface 221 and the second reference surface is a free curve, which can be a NURBS curve, a Bézier curve, a polynomial curve, etc., and this application does not impose any restrictions on it.

[0077] like Figure 2 , Figure 5 and Figure 9As shown, in some embodiments of this application, a plurality of sub-light-emitting units 231 include a central sub-unit 2311 and a first sub-unit 2312 and a second sub-unit 2313 disposed at both ends along the first direction Y. Along the first direction Y, the distance between the central sub-unit 2311 and the first sub-unit 2312 is different from the distance between the central sub-unit 2311 and the second sub-unit 2313. The optical axis L of the second lens 300 passes through the central sub-unit 2311. The distance between each first light-emitting surface 202 from the central sub-unit 2311 to the first sub-unit 2312 and the substrate 210 along the second direction X gradually increases, and / or the distance between each first light-emitting surface 202 from the central sub-unit 2311 to the second sub-unit 2313 and the substrate 210 along the second direction X gradually increases.

[0078] The light-emitting section 230 includes multiple sub-light-emitting units 231, each of which has a free-form first light-emitting surface 202. The optical axis L passes through the central sub-unit 2311, meaning that the central sub-unit 2311 defines the central light spot in the ADB light pattern. Furthermore, the distance between the central sub-unit 2311 and the first sub-unit 2311 is not equal to the distance between the central sub-unit 2311 and the second sub-unit 2312. That is, the central sub-unit 2311 is not located at the center of the first lens 200 along the first direction Y. This arrangement makes the distribution of the sub-light-emitting units 231 along the first direction Y more closely resemble actual lighting requirements, thereby improving the ADB shielding accuracy and the coverage of the effective lighting area.

[0079] Furthermore, the distance between each first light-emitting surface 202 of the central subunit 2311 and the substrate 210 along the second direction X gradually increases, and / or, the distance between each first light-emitting surface 202 of the central subunit 2311 and the substrate 210 along the second direction X gradually increases. Taking the first subunit 2312 as the leftmost sub-light-emitting unit 231 and the second subunit 2312 as the rightmost sub-light-emitting unit 231 as an example, this configuration, viewed from above, refers to... Figure 5 This can form a structure that is low at the center and gradually increases in height on the left and right sides. The first light-emitting surfaces 201 on the left side of the central subunit 2311 gradually move away from the substrate 210, and the first light-emitting surfaces 201 on the right side of the central subunit 2311 also gradually move away from the substrate 210.

[0080] With this configuration, firstly, the distance between the first light-emitting surface 202 of the central subunit 2311 and the substrate 210 is the shortest. Its curved surface design can more accurately control the refraction angle of light near the optical axis L, reduce spherical aberration or coma, and make the central light spot sharper and the brightness more uniform.

[0081] Secondly, the further to the left or right, the greater the distance between the light processed by the sub-light-emitting unit 231 and the optical axis L, resulting in a longer refraction path, a larger angular deviation, and a greater likelihood of field curvature. Specifically, this manifests as a bending of the imaging surface in the edge illumination sub-regions, leading to uneven brightness or poor focusing at the edges of the beam pattern. This embodiment, through the aforementioned gradually increasing structural design, can specifically adjust the refraction path of large-angle light rays, compensating for or even canceling field curvature, making the brightness distribution of each illumination sub-region more consistent. This, in turn, helps improve the uniformity of the stitched ADB beam pattern in the first direction X, eliminating the problem of a bright center and dark edges.

[0082] Furthermore, field curvature can cause blurred light pattern boundaries in edge sub-regions. The targeted compensation by the sub-light-emitting unit 231 helps ensure clear boundaries and regular contours in each illumination sub-region at the edge, improving anti-glare accuracy. In addition, since the first lens 200 has been designed to eliminate large-angle field curvature, the second lens 300 does not need to undertake complex field curvature correction functions, which also helps to simplify the structural design of the second lens 300 and reduce system costs.

[0083] It is understandable that the light emitted from each sub-light-emitting unit 231, after being projected by the second lens 300, will form each illumination sub-region in the ADB light pattern. The arrangement order of each illumination sub-region is the opposite of the arrangement order of the corresponding sub-light-emitting units 231.

[0084] like Figure 2 , Figure 5 and Figure 9 As shown, in some embodiments of this application, the width of each first light-emitting surface 202 from the central subunit 2311 to the first subunit 2312 gradually increases, and / or the width of each first light-emitting surface 202 from the central subunit 2311 to the second subunit 2313 gradually increases.

[0085] This embodiment defines the width distribution pattern of the first light-emitting surface 202 of each sub-light-emitting unit 231. The width of the first light-emitting surface 202 of each sub-light-emitting unit 231 gradually increases from the central sub-unit 2311 towards both sides. This configuration has several advantages. First, by increasing the width of the first light-emitting surface 202 of the edge sub-light-emitting units 231, the light-emitting area can be increased, allowing more light to pass through this area, compensating for energy loss, and thus improving the uniformity of brightness across the entire field of view. Second, when the distances between the central sub-unit 2311 and the first and second sub-units 2312 and 2313 at the beginning and end are unequal, the characteristics of edge light rays in different directions differ. In this case, the width gradient change can be designed as asymmetrical, thus matching the asymmetrical light pattern requirements and improving the coverage of the effective illumination area. Third, large-angle light rays are prone to beam widening due to large refraction angles, and overlapping dark areas may occur when adjacent illumination sub-regions are joined. By increasing the width of the first light-emitting surface 202 in a gradient manner, the angle of the emitted light rays at the edge can be adjusted in a targeted manner to ensure that the light spot width of each illumination sub-region is consistent on the focal plane S1, resulting in clearer boundaries during splicing and improving the problem of dark areas during splicing.

[0086] Optionally, in some embodiments, the ADB beam pattern can achieve a field of view of 20° on the left and 15° on the right.

[0087] like Figure 4 , Figure 5 , Figure 10 and Figure 11 As shown, in some embodiments of this application, the plurality of light-emitting units 110 include a first light-emitting unit 110a opposite to the central subunit 2311. The light from the first light-emitting unit 110a is emitted sequentially from the first surface 221 and the first light-emitting surface 202 of the central subunit 2311 to form a refracted beam. The optical axis L of the second lens 300 coincides with the light-emitting center of the first light-emitting unit 110a.

[0088] Along the first direction Y, the refracted beam is deflected toward the optical axis L, and the deflection angle is greater than or equal to -1.5° and less than or equal to 1.5°; the central subunit 2311 includes a first surface 2311a and a second surface 2311b arranged opposite each other along the third direction Z. The second surface 2311b is located above the first surface 2311a. Along the direction from the first surface 2311a to the second surface 2311b, the deflection angle of the refracted beam with respect to the optical axis L gradually decreases from 3° to 0° and gradually increases from 0° to 1°.

[0089] This embodiment further specifies the specific range of light modulation of the first light-emitting surface 202 of the central subunit 2311. The central subunit 2311 includes a first surface 2311a and a second surface 2311b, which are two connecting surfaces connecting the first light-emitting surface 202 of the central subunit 2311 to the substrate 210.

[0090] The light propagation path of the first light-emitting unit 110a is sequentially the first surface 221 (corresponding to the first incident surface 201), the substrate 210, and the first light-emitting surface 202 of the central sub-unit 2311, ultimately emitting a refracted light beam. The light-emitting center of the first light-emitting unit 110a coincides with the optical axis L of the second lens 300, ensuring that the refracted light beam serves as the reference ray for the entire optical system and is directly related to the shape of the central region of the ADB light pattern.

[0091] Along the first direction Y, the refracted beam is deflected towards the optical axis L, and the deflection angle is limited to the range of -1.5° to 1.5°. This setting ensures that the light in the central area has almost no significant lateral deviation, providing a stable reference for the splicing of adjacent illumination sub-regions. This helps to improve the splicing reliability and accuracy of the ADB light pattern, while significantly improving the continuity and uniformity of the ADB light pattern along the lateral direction.

[0092] Along the direction from the first surface 2311a to the second surface 2311b, from the edge of the lower first surface 2311a to the middle position, the deflection angle of the light gradually decreases from 3° to 0°. That is, the light originally moving away from the optical axis L is deflected by 3° towards the optical axis L after being modulated by the first surface 221 and the first light-emitting surface 202 of the central subunit 2311, and finally coincides with the optical axis L at the middle position. From the middle position to the edge of the upper second surface 2311b, the deflection angle of the light gradually increases from 0° to 1°. That is, the light originally moving away from the optical axis L is deflected by 1° towards the direction away from the optical axis L after being modulated by the first surface 221 and the first light-emitting surface 202 of the central subunit 2311, gradually increasing from 0° to 1°. This setting helps to improve the convergence accuracy of the light in the third direction Z, enhance the energy concentration in the central region, and improve the central brightness. In addition, it also helps to optimize the near-field illumination coverage, avoid dark areas below, and balance high-altitude illumination and anti-glare.

[0093] like Figure 4 , Figure 5 , Figure 10 and Figure 11As shown, in some embodiments of this application, the intersection line of the first light-emitting surface 202 of the central subunit 2311 and the third reference surface P3 is a first free curve, the intersection line of the first light-emitting surface 202 of the central subunit 2311 and the fourth reference surface P4 is a second free curve, the third reference surface P3 passes through the optical axis L of the second lens 300 and is perpendicular to the third direction Z, and the fourth reference surface P4 passes through the optical axis L of the second lens 300 and is perpendicular to the first direction Y.

[0094] The third reference plane P3 is a horizontal plane passing through the optical axis L, and the fourth reference plane P4 is a vertical plane passing through the optical axis L. Specifically, with the light-emitting center of the first light-emitting unit 110a as the origin O, the first direction Y as the Y-axis, the second direction X as the X-axis, and the third direction Z as the Z-axis, a coordinate system is established. Then the formula for the first free curve is: y=9.623+5.226x+2.301x²+1.282x 3 +0.52x 4 ; The formula for the second free curve is: Z=6.129-10.758x+2.569x²+0.163x 3 +0.035x 4 .

[0095] Therefore, based on the formula of the free curve mentioned above, the specific surface shape (in mm) of the first light-emitting surface 202 of the central subunit 2311 can be fitted by interpolation, parameterization, partition fitting and other methods.

[0096] It should be noted that this embodiment proposes one surface shape formula for the first light-emitting surface 202 of the central sub-unit 2311, but it is not intended to be the only limitation on the surface shape of the first light-emitting surface 202 of the central sub-unit 2311. It is understood that the freeform surfaces of other sub-light-emitting units 231 can be flexibly designed according to the specific optical requirements of each light spot, and this application does not limit them.

[0097] like Figure 9 and Figure 10 As shown, in some embodiments of this application, the first light-emitting surface 202 of the central subunit 2311 is symmetrically designed about the fourth reference surface P4, while the other first light-emitting surfaces 202 do not have an axis of symmetry and are asymmetrically designed. This is beneficial to further improve the ease of manufacturing the light-emitting section 230 while ensuring splicing accuracy.

[0098] like Figure 2 and Figure 3 As shown, in some embodiments of this application, the second lens 300 includes a second light-incident surface 310 and a second light-outceasing surface 320, both of which are convex surfaces.

[0099] In other words, the second lens 300 is a biconvex lens. Compared with a plano-convex lens, the biconvex surface can be designed with different curvatures to ensure the efficient passage of light at large angles while keeping the distortion within an acceptable range, which is conducive to further improving distortion and taking into account the field of view.

[0100] like Figure 12 and Figure 13 As shown, Figure 12 This is a simulation diagram of the ADB beam pattern of the adaptive high beam module 10 according to an embodiment of this application. Figure 13 This is a schematic diagram illustrating the lighting effect of the adaptive high beam module 10 according to an embodiment of this application. (The diagram is then compared with...) Figure 1 As can be seen from the comparison, the ADB light pattern projected by the adaptive high beam module 10 of this application has the advantages of large vertical field of view, small distortion, excellent dispersion control and good illumination uniformity.

[0101] Secondly, embodiments of this application provide a vehicle headlight, including the adaptive high beam module 10 described in the first aspect.

[0102] The vehicle headlights of this embodiment use the adaptive high beam module 10 described in the first aspect. In each optical channel of the adaptive high beam module 10, a pair of cooperating freeform surfaces (a first incident surface 201 and a corresponding first exit surface 202) adjust the distance of the emitted light rays from the sagittal plane of the second lens 300, thereby adjusting the field of view, dispersion, distortion, and uniformity of the ADB light pattern. That is, the ADB light pattern projected by the vehicle headlights of this embodiment has the advantages of a large vertical field of view, low distortion, excellent dispersion control, and good illumination uniformity.

[0103] 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 first lens is disposed on the light-emitting side of the light source assembly. The first lens includes a plurality of first light-incident surfaces and a plurality of first light-emitting surfaces. The light-emitting unit, the first light-incident surface, and the first light-emitting surface are arranged in a one-to-one correspondence. The second lens is disposed on the side of the first lens that is away from the light source assembly; Both the first light-incident surface and the first light-exit surface are freeform surfaces. The light emitted by the light-emitting unit enters the first lens through the first light-incident surface and exits the second lens through the first light-exit surface. The second lens receives the light emitted from the first light-exit surface and projects it into an illumination sub-region. Multiple illumination sub-regions are spliced ​​together along the first direction to form an ADB light pattern.

2. The adaptive high beam module according to claim 1, characterized in that, Along the second direction, the focal plane of the second lens is located between the first light-incident surface and the first light-outceasing surface, and the second direction is perpendicular to the first direction.

3. The adaptive high beam module according to claim 2, characterized in that, The first lens includes a substrate and light-incident and light-outcrystal portions disposed on opposite sides of the substrate along the second direction. The light-incident portions form the plurality of first light-incident surfaces, and the light-outcrystal portions form the plurality of first light-outcrystal surfaces. The focal plane of the second lens is located on the side surface of the substrate near the light-incident portion, or the focal plane of the second lens is located on the side surface of the substrate near the light-outceasing portion.

4. The adaptive high beam module according to claim 1, characterized in that, The first lens includes a substrate and an incident light portion and an exit light portion disposed on opposite sides of the substrate along a second direction, wherein the second direction is perpendicular to the first direction; The light-incident portion extends along the first direction, and the light-incident portion includes a first surface on a side away from the substrate. The first surface is a smooth free-form surface, and the first surface is formed by splicing together the plurality of first light-incident surfaces. The plurality of first light-incident surfaces have the same shape. The light-emitting part includes a plurality of sub-light-emitting units, and each sub-light-emitting unit forms a first light-emitting surface on the side surface opposite to the substrate.

5. The adaptive high beam module according to claim 4, characterized in that, The first surface includes a first sub-surface and a second sub-surface arranged along a third direction, and the second sub-surface is connected to the first sub-surface; Along the direction from near the light-emitting unit to away from the light-emitting unit, the second sub-surface extends obliquely and bends from the side near the first sub-surface to the side away from the first sub-surface, and the first direction, the second direction, and the third direction are perpendicular to each other; Along the third direction, the light-emitting center of the light-emitting unit coincides with the optical axis of the second lens, and the optical axis of the second lens passes through the second sub-surface.

6. The adaptive high beam module according to claim 4, characterized in that, The intersection of the first surface and the first reference surface is a straight line, the intersection of the first surface and the second reference surface is a free curve, the first reference surface is perpendicular to a third direction, the second reference surface is perpendicular to the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

7. The adaptive high beam module according to claim 4, characterized in that, The plurality of said sub-light-emitting units include a central sub-unit and a first sub-unit and a second sub-unit disposed at both ends along the first direction; Along the first direction, the distance between the central subunit and the first subunit is not the same as the distance between the central subunit and the second subunit, and the optical axis of the second lens passes through the central subunit; The distance between each first light-emitting surface from the central subunit to the first subunit and the substrate along the second direction gradually increases, and / or the distance between each first light-emitting surface from the central subunit to the second subunit and the substrate along the second direction gradually increases.

8. The adaptive high beam module according to claim 7, characterized in that, The width of each of the first light-emitting surfaces gradually increases from the central subunit to the first subunit; And / or, the width of each of the first light-emitting surfaces from the central subunit to the second subunit gradually increases.

9. The adaptive high beam module according to claim 7, characterized in that, The plurality of light-emitting units include a first light-emitting unit opposite to the central subunit. The light from the first light-emitting unit is emitted sequentially from the first surface and the first light-emitting surface of the central subunit to form a refracted beam. The optical axis of the second lens coincides with the light-emitting center of the first light-emitting unit. Along the first direction, the refracted beam is deflected toward the direction closer to the optical axis, and the deflection angle is greater than or equal to -1.5° and less than or equal to 1.5°; The central subunit includes a first surface and a second surface arranged opposite each other along a third direction. The second surface is located above the first surface. Along the direction from the first surface to the second surface, the deflection angle of the refracted beam relative to the optical axis gradually decreases from 3° to 0° and gradually increases from 0° to 1°. The first direction, the second direction, and the third direction are perpendicular to each other.

10. A vehicle light, characterized in that, Includes the adaptive high beam module as described in any one of claims 1-9.

Images