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 reflector arranged on the light emitting side of the light source assembly, the reflector comprising a plurality of reflecting surfaces arranged one-to-one corresponding to the light emitting surfaces of the light emitting units; a first lens and a second lens, the first lens being arranged on the reflected light path of the reflector, the second lens being located on the side of the first lens away from the reflector, the light emitted by the light source assembly being reflected by the reflector to the first lens, projected to the second lens through the first lens, and emitted by the second lens to form an ADB light shape; the first lens and the second lens are both convex lenses, and the light emitting surface of the second lens is a plane. Thus, the imaging quality of the ADB light shape can be ensured, and the adaptability of the adaptive high beam module to the vehicle model can be improved.

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] Adaptive Driving Beam (ADB) is a new solution that replaces the traditional pixelated high beam headlights. Matching the headlight design with the vehicle's body shape is becoming a key focus in vehicle design; excellent headlight design can better express the overall design theme or intent of the vehicle. Ultra-narrow ADB modules with an opening height of less than 15mm have a slender, elongated shape and can be integrated with light guide turn signals for better design expression, thus becoming one of the mainstream products developed in the industry.

[0003] One type of narrow-aperture ADB module in related technologies includes a light source, a reflector, and an outermost lens, which is composed of multiple sub-lens modules spliced ​​together. To meet design requirements, the light-emitting surface of the lens needs to be a seamless surface. Therefore, the light-emitting surface of each individual sub-lens module before splicing must be a flat surface.

[0004] However, this makes the light-incident surface of the lens more convex, resulting in greater aberrations and making it difficult for light to converge into a clear spot. The verticality of the large-angle single-pixel boundary of the ADB beam pattern is poor, and the boundary is prone to distortion, small tails, and other shapes, affecting the light output performance of the ADB. Utility Model Content

[0005] This application proposes an adaptive high beam module and vehicle headlight, aiming to improve the incompatibility between the matching of headlight shape and the quality of emitted light pattern in related technologies.

[0006] 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 corresponding one-to-one with the light-emitting surfaces of the light-emitting units; a first lens and a second lens, the first lens being disposed on the reflected light path of the reflector, the second lens being located on the side of the first lens away from the reflector, the light emitted from the light source assembly being reflected by the reflector to the first lens, projected by the first lens to the second lens, and emitted by the second lens to form an ADB light pattern; both the first lens and the second lens are convex lenses, and the light-emitting surface of the second lens is a plane.

[0007] This application distributes the function of one lens across two lenses in related technologies. First, the light-emitting surface of the second lens is defined as a plane to ensure that the headlight design matches the overall vehicle styling requirements. Second, the light-incident and light-emitting surfaces of the first lens and the light-incident surface of the second lens can actively participate in light distribution to improve aberration issues, while the light-emitting surface of the second lens, being plane, has no self-correction capability. This results in smaller large-angle aberrations in the lens group formed by the first and second lenses, and better image quality and verticality of the large-angle single-pixel light pattern boundary of the ADB beam. Consequently, while ensuring the illumination effect and image quality of the ADB beam, it improves the adaptability of the adaptive high beam module to the vehicle's styling, thereby enhancing the vehicle's premium feel and overall quality.

[0008] In some embodiments, both the incident surface and the exit surface of the first lens are aspherical.

[0009] This configuration enables the first lens to have better aberration correction capabilities, which in turn helps to improve the adaptability of the adaptive high beam module to the vehicle's styling while enhancing the illumination effect and imaging quality of the ADB beam pattern.

[0010] In some embodiments, the incident surface of the second lens is an aspherical surface.

[0011] This configuration allows the second lens to also have a certain aberration correction function, which helps to improve the adaptability of the adaptive high beam module to the vehicle's styling, while further improving the lighting effect and imaging quality of the ADB beam pattern.

[0012] In some embodiments, optical microstructures are formed on the plane.

[0013] By forming an optical microstructure on the plane of the light-emitting surface of the second lens, uniform diffusion of light can be achieved, which helps to improve the uniformity of the ADB light pattern.

[0014] In some embodiments, the adaptive high beam module further includes a light-blocking plate disposed between the light source assembly and the first lens; When viewed along the second direction, the orthographic projection of all the light-emitting units is located within the orthographic projection of the light-blocking plate, and the orthographic projection of the reflector partially overlaps with the orthographic projection of the light-blocking plate. The second direction is perpendicular to the first direction.

[0015] This design allows the light-blocking plate to block light rays that are emitted directly without passing through the reflector, eliminating direct stray light, while not affecting the normal function of the reflector. This helps to improve the sharpness of the bright and dark areas of the ADB light pattern and the clarity of the light pattern boundaries.

[0016] In some embodiments, the light-emitting unit is disposed on one side of the reflector along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; When viewed along the second direction, the width of the overlapping area between the orthographic projection of the reflector and the orthographic projection of the light-blocking plate is less than or equal to 0.5 mm.

[0017] First, it helps eliminate direct stray light, improving the sharpness of the bright and dark areas of the ADB beam pattern and the clarity of the beam pattern boundaries. Second, it helps ensure the collection rate of reflected light, improving luminous efficiency and thus increasing the brightness of the emitted beam pattern. Third, it also helps ensure the integrity of the ADB beam pattern, improving its beam pattern quality.

[0018] In some embodiments, the plurality of light-emitting units are divided into a first light source group and a second light source group along the first direction; The reflector is two, namely a first reflector and a second reflector, the first reflector being opposite to the first light source group, and the second reflector being opposite to the second light source group; The first lens includes a first lens portion and a second lens portion respectively disposed corresponding to the first reflector and the second reflector; the second lens includes a third lens portion and a fourth lens portion respectively disposed corresponding to the first lens portion and the second lens portion. The first light source group, the first reflector, the first lens section, and the third lens section constitute a first optical path for forming a broadened ADB light pattern. The second light source group, the second reflector, the second lens section, and the fourth lens section constitute a second optical path for forming a central ADB light pattern; The broadened ADB light pattern is superimposed with the central ADB light pattern to form the ADB light pattern.

[0019] Through the above design, firstly, the first optical path focuses on width illumination, while the second optical path focuses on center brightness, thus improving the lighting effect and illumination efficiency of the ADB beam pattern. Secondly, the central ADB beam pattern and the widened ADB beam pattern can also be considered as two separate sub-ADB beam patterns, which can form functional redundancy with each other, thereby also improving the reliability of the adaptive high beam module.

[0020] In some embodiments, the number of light-emitting units in the first light source group is greater than the number of light-emitting units in the second light source group; On the target plane, the boundary of the central ADB beam shape in the first direction lies within the boundary of the extended ADB beam shape in the first direction.

[0021] The above design firstly improves the center brightness of the ADB beam pattern, compensating for insufficient luminous flux in the central area caused by the narrow aperture. Secondly, it expands the illumination range and resolution of the ADB beam pattern while achieving high-brightness illumination in the center, thus also improving the anti-glare performance of the adaptive high beam module.

[0022] In some embodiments, the plurality of reflecting surfaces of the first reflector includes two first reflecting surfaces located at the beginning and end and a plurality of second reflecting surfaces located in the middle, wherein the width of at least one first reflecting surface is greater than the width of the second reflecting surface. The plurality of reflecting surfaces of the second reflector have the same width.

[0023] This configuration allows for the collection of more large-angle light rays emitted from the corresponding light-emitting units, thus helping to expand the horizontal illumination width of the final ADB light pattern. Furthermore, it also improves the uniformity of the central ADB light pattern.

[0024] In some embodiments, the system further includes a first barrier plate and a second barrier plate, one end of the first barrier plate being disposed between the first light source group and the second light source group, and the other end extending along the second direction and opposite to the boundary between the light incident surfaces of the first lens portion and the second lens portion. The second barrier plate extends along the second direction, with one end of the second barrier plate facing the boundary between the light-emitting surfaces of the first lens portion and the second lens portion, and the other end facing the boundary between the light-incident surfaces of the third lens portion and the fourth lens portion.

[0025] This allows for complete isolation between the first and second optical paths, preventing crosstalk between the emitted light patterns before they are superimposed. This improves the purity and independent controllability of the central ADB light pattern and the broadened ADB light pattern, while also enhancing the contrast and sharpness of the final ADB light pattern.

[0026] In some embodiments, the light-incident surface of the second lens portion is the same as a portion of the light-incident surface of the first lens portion, and the light-exiting surface of the second lens portion is the same as a portion of the light-exiting surface of the first lens portion; The third lens section and the fourth lens section are identical and arranged in an array.

[0027] This setup offers several advantages. First, the central ADB beam and the expanded ADB beam share the same light processing characteristics and good overlay matching, enabling pixel-level overlay and improving the quality and illumination performance of the final ADB beam. Second, it also helps reduce manufacturing complexity and costs.

[0028] Secondly, embodiments of this application propose a vehicle headlight, including the adaptive high beam module described in the first aspect.

[0029] The vehicle headlights in this embodiment are based on the same inventive concept as the adaptive high beam module in the above embodiments. Therefore, the vehicle headlights can obtain the beneficial effects of the adaptive high beam module in the corresponding embodiments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the adaptive high beam module provided in the embodiments of this application; Figure 2 A schematic diagram of the adaptive high beam module provided in an embodiment of this application from another perspective; Figure 3 A structural schematic diagram of the adaptive high beam module provided in an embodiment of this application from another perspective; Figure 4 A schematic diagram of the adaptive high beam module provided in an embodiment of this application from another perspective; Figure 5 This is a schematic diagram of the optical path of the adaptive high beam module provided in the embodiments of this application in the horizontal direction; Figure 6 This is a schematic diagram of the optical path of the adaptive high beam module provided in the embodiments of this application in the vertical direction; Figure 7a This is a schematic diagram of the ADB beam pattern of the adaptive high beam module provided in the embodiments of this application; Figure 7b A schematic diagram of the dark area formed by the ADB beam pattern of the adaptive high beam module provided in this application embodiment; Figure 8 A schematic diagram showing the superposition of the expanded ADB beam pattern and the central ADB beam pattern of the adaptive high beam module provided in this application embodiment; Figure 9 A simplified structural diagram of the adaptive high beam module provided in this application embodiment before pixel-level superposition of the expanded ADB beam pattern and the central ADB beam pattern; Figure 10 for Figure 3 A magnified structural diagram at point N.

[0031] The annotations in the attached figures are explained as follows: 10. Adaptive high beam module; 100, Light source assembly; 100a, First light source group; 100b, Second light source group; 110, Light-emitting unit; 200, Reflector; 210, Reflecting surface; 200a, First reflector; 200b, Second reflector; 211, First reflecting surface; 212, Second reflecting surface; 2121, First central reflecting surface; 2101, Second central reflecting surface. 300, First lens; 310, First lens section; 320, Second lens section; 330, First upper surface; 340, First lower surface; 350, First left side surface; 360, First right side surface; 370, First stepped surface; 380, Second stepped surface. 400, Second lens; 401, Optical microstructure; 410, Third lens section; 420, Fourth lens section; 430, Second upper surface; 440, Second lower surface; 450, Second left side surface; 460, Second right side surface. 500, light-blocking plate; 510, first light-blocking plate; 520, second light-blocking plate; 610, first barrier plate; 620, second barrier plate; P1, widened ADB light pattern; P2, central ADB light pattern. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] One type of narrow-aperture ADB module in related technologies includes a light source, a reflector, and an outermost lens, which is composed of multiple sub-lens modules spliced ​​together. To meet design requirements, the light-emitting surface of the lens needs to be a seamless surface. Therefore, the light-emitting surface of each individual sub-lens module before splicing must be a flat surface.

[0037] However, this makes the light-incident surface of the lens more convex, resulting in greater aberrations and making it difficult for light to converge into a clear spot. The verticality of the large-angle single-pixel boundary of the ADB beam pattern is poor, and the boundary is prone to distortion, small tails, and other shapes, affecting the light output performance of the ADB.

[0038] Based on the above problems, this application proposes an adaptive high beam module 10 to improve the incompatibility between the matching of the headlight shape and the quality of the emitted light pattern.

[0039] like Figures 1 to 4 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 reflector 200, a first lens 300, and a second lens 400. The light source assembly 100 includes a plurality of light-emitting units 110 arranged at intervals along a first direction. The reflector 200 is disposed on the light-emitting side of the light source assembly 100 and includes a plurality of reflective surfaces 210 corresponding one-to-one with the light-emitting surfaces of the light-emitting units 110. The first lens 300 is disposed on the reflected light path of the reflector 200, and the second lens 400 is located on the side of the first lens 300 facing away from the reflector 200. Figure 5 , Figure 6 , Figure 7a and Figure 7b As shown, the light emitted from the light source assembly 100 is reflected by the reflector 200 to the first lens 300, projected by the first lens 300 to the second lens 400, and emitted from the second lens 400 to form an ADB light pattern. Both the first lens 300 and the second lens 400 are convex lenses, and the light-emitting surface of the second lens 400 is a plane.

[0040] The Adaptive High Beam Module 10, also known as the ADB module, enables zoned adaptive high beam lighting, avoiding glare to vehicles or pedestrians ahead while maximizing illumination of other areas.

[0041] Specifically, it includes a light source assembly 100, a reflector 200, a first lens 300, and a second lens 400. The light source assembly 100 includes multiple light-emitting units 110, which may be, for example, LED (Light Emitting Diode) chips, or other light-emitting devices that can be independently controlled to light up or turn off; this application does not limit this.

[0042] Multiple light-emitting units 110 are arranged at intervals along a first direction, which is the Y direction in the attached figure, or the left and right direction of the vehicle. The second direction is the X direction in the attached figure, and the third direction is the Z direction in the attached figure. The second direction, the third direction and the first direction are perpendicular to each other. The second direction can be the front and rear direction of the vehicle, and the third direction can be the height direction of the vehicle.

[0043] The adaptive high beam module 10 can receive signals from the vehicle's ADB control system and, through the control unit, precisely and quickly control the on / off state and brightness of each light-emitting unit 110 (or each light-emitting unit 110 in each group), thereby realizing the adaptive zone control ADB function. For example, when meeting oncoming traffic, one or more light-emitting units 110 can be turned off, making the corresponding area in the ADB beam pattern a dark area to avoid glare.

[0044] The reflector 200 can initially adjust the light from the light source assembly 100, laying the foundation for subsequent projection onto the first lens 300. The reflector 200 consists of multiple reflector bowls, each of which forms a reflective surface 210 opposite to the light-emitting surface of the light-emitting unit 110. The reflective surface 210 can converge and collimate the divergent light emitted from the light-emitting unit 110 in a first direction and a third direction.

[0045] The first lens 300 can perform a second adjustment on the reflected light from the reflector 200, and the second lens 400 can perform a third adjustment on the emitted light from the first lens 300, ultimately adjusting the reflected light into the desired ADB beam pattern. That is, the first lens 300 and the second lens 400 together form a lens group for adjusting the light beam.

[0046] In the adaptive high-beam module 10 of this application embodiment, the reflector 200 first reflects the diverging light emitted from the light source assembly 100 into controllably converging reflected light. Then, the first lens 300 and the second lens 400 sequentially adjust the reflected light in two stages. In this way, the first lens 300 and the second lens 400 can cooperate in adjusting the light pattern. The first lens 300 is the primary corrector, performing initial light adjustment and major aberration correction on the reflected light; the second lens 400 is the secondary corrector. The light-emitting surface of the second lens 400 is planar, and the second lens 400 mainly fine-tunes the light through its incident light surface, improving aberrations that the first lens 300 has not fully corrected.

[0047] In other words, this application distributes the function of one lens in related technologies across two lenses. First, the light-emitting surface of the second lens 400 is defined as a plane to ensure that the shape of the headlight matches the overall vehicle design. Second, the light-incident and light-emitting surfaces of the first lens 300 and the light-incident surface of the second lens 400 can actively participate in light distribution to improve aberrations. The light-emitting surface of the second lens 400, being planar, has no self-correction capability. This results in smaller large-angle aberrations in the lens group formed by the first lens 300 and the second lens 400, leading to better image quality and verticality of the large-angle single-pixel light pattern boundary of the ADB beam. Consequently, while ensuring the illumination effect and image quality of the ADB beam, it improves the adaptability of the adaptive high beam module 10 to the vehicle's design, thereby enhancing the vehicle's premium feel and overall quality.

[0048] In some embodiments, both the incident surface and the exit surface of the first lens 300 are aspherical.

[0049] Aspherical surfaces refer to any curved surface that deviates from a sphere. For example, aspherical surfaces can be freeform surfaces of the XY polynomial type, Zernike polynomial type, quadratic surfaces, higher-order aspherical surfaces, etc.

[0050] By setting both the light-incident surface and the light-outcident surface of the first lens 300 as aspherical, the first lens 300 has a better aberration correction function, which can efficiently collect the reflected light from the reflector 200 and eliminate most aberrations. This is beneficial to improve the adaptability of the adaptive high beam module 10 to the vehicle's styling, while also improving the illumination effect and imaging quality of the ADB light pattern.

[0051] In some embodiments, the incident surface of the second lens 400 is an aspherical surface.

[0052] By setting the light-incident surface of the second lens 400 to an aspherical surface, the second lens 400 also has a certain aberration correction function, which can correct the residual aberration after the correction of the first lens 300. This is beneficial to improve the adaptability of the adaptive high beam module 10 to the vehicle styling, while further improving the lighting effect and imaging quality of the ADB light pattern.

[0053] like Figures 1 to 4 As shown, in some embodiments, an optical microstructure 401 is formed on the plane of the light-emitting surface of the second lens 400.

[0054] The optical microstructure 401 can be formed, for example, by bonding, surface engraving, or integral molding. The optical microstructure 401 can be a tiny surface with a raised or recessed shape, for example, the projection of a single optical microstructure 401 onto a plane is a rectangle with a side length >1.2 mm.

[0055] By forming an optical microstructure 401 on the plane of the light-emitting surface of the second lens 400, uniform diffusion of light can be achieved, which helps to improve the uniformity of the ADB light pattern.

[0056] In some embodiments, the light-emitting surface of the second lens 400 is rectangular, with a width of 80 mm along the first direction and a height of 15 mm along the third direction. This enables the creation of an ultra-narrow opening headlight design.

[0057] like Figures 1 to 4 As shown, in some embodiments, the adaptive high beam module 10 further includes a light-blocking plate 500, which is disposed between the light source assembly 100 and the first lens 300. When viewed along the second direction, the orthographic projection of all the light-emitting units 110 is located within the orthographic projection of the light-blocking plate 500, and the orthographic projection of the reflector 200 overlaps with the orthographic projection of the light-blocking plate 500. The second direction is perpendicular to the first direction.

[0058] Although the light-emitting surface of the light-emitting unit 110 is opposite to the reflective surface 210 of the reflector 200, some large-angle light rays will always enter the first lens 300 directly without being reflected by the reflector 200, resulting in stray light.

[0059] Therefore, in this embodiment, by setting a light-blocking plate 500, all light-emitting units 110 are blocked. At the same time, the orthographic projection of the reflector 200 and the orthographic projection of the light-blocking plate 500 are limited to overlap. This allows the light-blocking plate 500 to block light rays that are directly emitted without passing through the reflector 200, eliminating direct stray light, while not affecting the normal function of the reflector 200. The reflector 200 can reflect most of the reflected light to the first lens 300, which helps to improve the sharpness of the bright and dark areas of the ADB light pattern and the clarity of the light pattern boundary, thereby improving the accuracy and reliability of the adaptive high beam anti-glare function.

[0060] Optionally, the light-blocking sheet 500 can be a light-blocking metal sheet, such as a black metal sheet, and the distance between the light-blocking sheet 500 and the light-emitting center of the light-emitting unit 110 is 2.9 mm.

[0061] like Figures 1 to 4 As shown, in some embodiments, the light-emitting unit 110 is disposed on one side of the reflector 200 along the third direction. When viewed along the second direction, the width H of the overlapping area between the orthographic projection of the reflector 200 and the orthographic projection of the light-blocking sheet 500 is less than or equal to 0.5 mm.

[0062] This embodiment defines the width of the overlapping area between the orthographic projection of the reflector 200 in the second direction and the orthographic projection of the light-blocking plate 500 in the second direction. If the width of the overlapping area is too large, the light-blocking plate 500 will block most of the reflective surface 210 of the reflector 200, resulting in a reduction in the actual usable light and a large light loss; furthermore, the unblocked area of ​​the reflective surface 210 of the reflector 200 will be difficult to reliably modulate the light, and will also destroy the integrity of the final emitted ADB light pattern.

[0063] Therefore, this embodiment limits the width of the overlapping area to the aforementioned range. First, this helps eliminate direct stray light, improving the sharpness of the bright and dark areas of the ADB beam pattern and the clarity of the beam pattern boundaries. Second, it helps ensure the collection rate of reflected light, improving luminous efficiency and thus increasing the brightness of the emitted beam pattern. Furthermore, it also helps ensure the integrity of the ADB beam pattern, improving its beam pattern quality.

[0064] like Figures 1 to 6 , Figure 8 and Figure 9 As shown, in some embodiments, multiple light-emitting units 110 are divided into a first light source group 100a and a second light source group 100b along a first direction. There are two reflectors 200, namely a first reflector 200a and a second reflector 200b. The first reflector 200a faces the first light source group 100a, and the second reflector 200b faces the second light source group 100b. The first lens 300 includes a first lens portion 310 and a second lens portion 320 respectively corresponding to the first reflector 200a and the second reflector 200b. The second lens 400 includes... The third lens section 410 and the fourth lens section 420 are respectively provided corresponding to the first lens section 310 and the second lens section 320. The first light source group 100a, the first reflector 200a, the first lens section 310 and the third lens section 410 constitute a first optical path for forming a broadened ADB light pattern P1. The second light source group 100b, the second reflector 200b, the second lens section 320 and the fourth lens section 420 constitute a second optical path for forming a central ADB light pattern P2. The broadened ADB light pattern P1 and the central ADB light pattern P2 are superimposed to form an ADB light pattern.

[0065] Since the adaptive high beam module 10 of this application is an ADB module with an ultra-narrow aperture, the amount of light reflected by the reflector 200 is limited, and there is also interface light loss, which may result in a lower brightness of the final ADB beam pattern.

[0066] In order to compensate for the center brightness and at the same time ensure the illumination width, in this embodiment, the adaptive high beam module 10 is divided into a first optical path to form a widened ADB light shape P1 and a second optical path to form a central ADB light shape P2. The widened ADB light shape P1 and the central ADB light shape P2 are superimposed to form an ADB light shape that meets the requirements.

[0067] Specifically, multiple light-emitting units 110 are divided into a first light source group 100a and a second light source group 100b along a first direction. The first light source group 100a is a line light source for a first optical path, and the second light source group 100b is a line light source for a second optical path. Each reflecting surface 210 of the first reflector 200a faces the light-emitting surface of each light-emitting unit 110 of the first light source group 100a, and each reflecting surface 210 of the second reflector 200b faces the light-emitting surface of each light-emitting unit 110 of the second light source group 100b. The first lens 300 includes a first lens portion 310 and a second lens portion 320, and the second lens 400 includes a third lens portion 410 and a fourth lens portion 420.

[0068] In this way, the light emitted from each light-emitting unit 110 of the first light source group 100a is reflected by each reflective surface 210 of the first reflector 200a and projected onto the first lens section 310, and then projected from the first lens section 310 to the third lens section 410 and emitted, forming a broadened ADB light pattern P1; the light emitted from each light-emitting unit 110 of the second light source group 100b is reflected by each reflective surface 210 of the second reflector 200b and projected onto the second lens section 320, and then projected from the second lens section 320 to the fourth lens section 420 and emitted, forming a central ADB light pattern P2.

[0069] The broadened ADB beam pattern P1 refers to an ADB beam pattern with a wide illumination range in the first direction, comprising multiple spot pixels, representing the maximum boundary contour of the final ADB beam pattern in the first direction. The central ADB beam pattern P2 refers to a high-brightness ADB beam pattern located in the central region of the final ADB beam pattern, and the central ADB beam pattern P2 also comprises multiple spot pixels. The two are superimposed to form the desired ADB beam pattern.

[0070] In this embodiment, through the above design, firstly, the first optical path focuses on width illumination, and the second optical path focuses on center brightness, which helps to improve the brightness of the ADB beam pattern, and thus improves the lighting effect of the ADB beam pattern. Secondly, the central ADB beam pattern P2 and the widened ADB beam pattern P1 can also be regarded as two separate sub-ADB beam patterns, which can form functional redundancy with each other. When one fails, the other can still provide part of the ADB illumination function, which also helps to improve the reliability of the adaptive high beam module 10.

[0071] like Figures 1 to 4 As shown and referenced Figure 8 and Figure 9In some embodiments, the number of light-emitting units 110 in the first light source group 100a is greater than the number of light-emitting units 110 in the second light source group 100b. On the target plane, the boundary of the central ADB light pattern P2 in the first direction is located within the boundary of the extended ADB light pattern P1 in the first direction.

[0072] In automotive lighting design, a target plane is an imaginary light distribution screen located at a predetermined distance directly in front of the vehicle. It is used to evaluate, measure, and regulate the light distribution emitted by the headlights. Typically, this predetermined distance is 25 meters.

[0073] Since the number of light-emitting units 110 in the first light source group 100a is greater than the number of light-emitting units 110 in the second light source group 100b, and each light-emitting unit 110 can form a corresponding light spot pixel, the broadened ADB light pattern P1 formed by the first optical path has more light spot pixels, providing a wide illumination range, thus defining the maximum width of the final ADB light pattern and improving its resolution. In contrast, the central ADB light pattern P2 formed by the second optical path has fewer light spot pixels, providing high brightness and ensuring a long-distance field of view for the final ADB light pattern.

[0074] Furthermore, by limiting the boundary of the central ADB beam pattern P2 in the first direction to be within the boundary of the broadened ADB beam pattern P1 in the first direction, the superposition of the broadened ADB beam pattern P1 and the central ADB beam pattern P2 can be achieved, thereby forming the final ADB beam pattern. Specifically, during the superposition, the HV point of the target plane (the intersection of the horizontal axis H and the vertical axis V, which is also the optical reference center of the target plane) is used as a reference, and several spot pixels of the central ADB beam pattern P2 (such as...) are... Figure 9 The five (in the image) are aligned one by one with the same number of light spot pixels in the central region of the expanded ADB light pattern P1 and then superimposed.

[0075] The above design firstly improves the center brightness of the ADB beam pattern, compensating for insufficient luminous flux in the central area caused by the narrow module opening. Secondly, it expands the illumination range and resolution of the ADB beam pattern while achieving high-brightness illumination in the center, thereby also improving the anti-glare performance of the adaptive high beam module 10.

[0076] It should be noted that when a dark area needs to be formed, if the dark area is not in the overlapping area, it is only necessary to turn off a number of light-emitting units 110 in the first light source group 100a; if the dark area is in the overlapping area, it is necessary to turn off the light-emitting units 110 in the first light source group 100a and the light-emitting units 110 in the second light source group 100b corresponding to the several light spot pixels that overlap with each other.

[0077] like Figures 1 to 4As shown, in some embodiments, there are two light-blocking plates 500, namely a first light-blocking plate 510 and a second light-blocking plate 520. The first light-blocking plate 510 is disposed between the first light source group 100a and the first lens portion 310, and the second light-blocking plate 520 is disposed between the second light source group 100b and the second lens portion 320. Thus, the first light-blocking plate 510 can block the direct stray light from the first light source group 100a, and the second light-blocking plate 520 can block the direct stray light from the second light source group 100b, thereby improving the sharpness of the bright and dark areas of the ADB beam pattern and the clarity of the beam pattern boundary, which in turn helps to improve the accuracy and reliability of the adaptive high beam anti-glare function.

[0078] Optionally, the thickness of the first light-blocking sheet 510 and the second light-blocking sheet 520 is 0.5 mm, the height in the third direction is 4.6 mm, the width of the first light-blocking sheet 510 in the first direction is 44 mm, the width of the second light-blocking sheet 520 in the first direction is 18 mm, and the interval between the two light-blocking sheets is 15 mm.

[0079] Optionally, in some embodiments, the first lens 300 can be made of polycarbonate (PC), which has good temperature resistance and can be placed close to the first light source group 100a; the second lens 400 can be made of polymethyl methacrylate (PMMA), which has high light transmittance, high UV resistance, and high hardness, and can be placed on the outermost side as a shaping surface. The first lens portion 310 and the second lens portion 320 can be spliced ​​together to form the first lens 300 by means of bonding, welding, etc., or they can be formed into the first lens 300 by an integral molding process. Similarly, the second lens 400 can also be spliced ​​together, integrally molded, etc. to form the third lens portion 410 and the fourth lens portion 420, and this application does not limit them in this way.

[0080] Optionally, such as Figures 1 to 4 As shown, the first lens portion 310 and the second lens portion 320 share a first upper surface 330 and a first lower surface 340. The first lens 300 also includes a first left side surface 350 and a first right side surface 360 ​​disposed opposite to each other along a first direction. The first upper surface 330, the first lower surface 340, the first left side surface 350, and the first right side surface 360 ​​are all planar and have microstructures such as texture to eliminate stray light. The height of the first lens 300 in the third direction is 15mm.

[0081] Optionally, such as Figures 1 to 4 , Figure 10As shown, a first stepped surface 370 is formed at the junction of the light-incident surfaces of the first lens section 310 and the second lens section 320, and a second stepped surface 380 is formed at the junction of the light-outceasing surfaces of the first lens section 310 and the second lens section 320. The first stepped surface 370 and the second stepped surface 380 are planar and have microstructures such as texture, which are intended to eliminate stray light.

[0082] Optionally, such as Figures 1 to 4 As shown, the third lens section 410 and the fourth lens section 420 share the second upper surface 430 and the second lower surface 440. The second lens 400 also includes a second left side surface 450 and a second right side surface 460 arranged opposite to each other along the first direction. The second upper surface 430, the second lower surface 440, the second left side surface 450 and the second right side surface 460 are all planar and have microstructures such as texture to eliminate stray light.

[0083] Optionally, the distance between the light-emitting surface of the first lens section 310 and the light-incident surface of the third lens section 410 is the same as the distance between the light-emitting surface of the second lens section 320 and the light-incident surface of the fourth lens section 420; the distance between the light-incident surface of the first lens section 310 and the first light-blocking plate 510 is the same as the distance between the light-incident surface of the second lens section 320 and the second light-blocking plate 520.

[0084] like Figure 3 and Figure 4 As shown, in some embodiments, the plurality of reflecting surfaces 210 of the first reflector 200a include two first reflecting surfaces 211 located at the beginning and end and a plurality of second reflecting surfaces 212 located in the middle, wherein the width of at least one first reflecting surface 211 is greater than the width of the second reflecting surface 212.

[0085] By widening the width of at least one of the two first reflective surfaces 211 located at the beginning and end, more large-angle light rays emitted from the corresponding light-emitting unit 110 can be collected and directed to the outer region of the target plane, thereby helping to expand the horizontal illumination width of the final ADB light pattern and achieve greater angle outer illumination.

[0086] In some embodiments, the multiple reflective surfaces 210 of the second reflector 200b have the same width.

[0087] The second reflector 200b serves the second optical path, aiming to form a central ADB beam pattern P2 with concentrated and uniform light intensity distribution. This design ensures that each reflecting surface 210 reflects approximately the same amount of light flux, thereby improving the uniformity of the central ADB beam pattern P2 and avoiding localized dark areas. Furthermore, it reduces the complexity of the optical design of the second reflector 200b, while also lowering manufacturing difficulty and cost.

[0088] Optionally, the plurality of reflecting surfaces 210 of the second reflector 200b are the same as the plurality of second reflecting surfaces 212 of the first reflector 200a, that is, they adopt the same surface shape design. It can be understood that the number of reflecting surfaces 210 of the second reflector 200b is less than the number of second reflecting surfaces 212 of the first reflector 200a.

[0089] Reference Figure 8 and Figure 9 Since the central ADB beam pattern P2 (generated by the second reflector 200b in conjunction with the second lens section 320 and the fourth lens section 420) is nested within the broadened ADB beam pattern P1 (generated by the first reflector 200a in conjunction with the first lens section 310 and the third lens section 410), this design allows for pixel-level superposition of each spot pixel in the central ADB beam pattern P2 with each spot pixel in the middle position of the broadened ADB beam pattern P1. This improves the convenience and matching of superposition, avoids problems such as superposition misalignment and poor spot overlap caused by design differences, and ensures the uniformity and integrity of the final synthesized ADB beam pattern. Furthermore, it helps to further reduce the complexity of the optical design of the first reflector 200a and the second reflector 200b, reducing manufacturing difficulty and cost.

[0090] Optionally, such as Figure 3 and Figure 4 As shown and referenced Figure 8 and Figure 9 Among the multiple second reflecting surfaces 212 of the first reflector 200a, there is a first central reflecting surface 2121. The center of the spot pixel corresponding to the first central reflecting surface 2121 is located at the HV point of the target plane, and this spot pixel is defined as the center pixel of the broadened ADB beam pattern P1. Similarly, among the multiple reflecting surfaces 210 of the second reflector 200b, there is also a second central reflecting surface 2101. The center of the spot pixel corresponding to the second central reflecting surface 2101 is also located at the HV point of the target plane, and this spot pixel is defined as the center pixel of the central ADB beam pattern P2. During superposition, the center pixel corresponding to the first central reflecting surface 2121 of the first reflector 200a and the center pixel corresponding to the second central reflecting surface 2101 of the second reflector 200b approximately completely overlap, thus providing a reference for the precise alignment of the broadened ADB beam pattern P1 and the central ADB beam pattern P2.

[0091] like Figures 1 to 4As shown, in some embodiments, the adaptive high beam module 10 further includes a first blocking plate 610 and a second blocking plate 620. One end of the first blocking plate 610 is disposed between the first light source group 100a and the second light source group 100b, and the other end extends along the second direction and is opposite to the boundary between the light-incident surfaces of the first lens portion 310 and the second lens portion 320. The second blocking plate 620 extends along the second direction, and one end of the second blocking plate 620 is opposite to the boundary between the light-outcrystal surfaces of the first lens portion 310 and the second lens portion 320, and the other end is opposite to the boundary between the light-incident surfaces of the third lens portion 410 and the fourth lens portion 420.

[0092] The first blocking plate 610 and the second blocking plate 620 can be black metal sheets. In the propagation optical path from the light source assembly 100, the reflector 200 to the first lens 300, the first blocking plate 610 can block the emitted light from the first light source group 100a and the second light source group 100b; in the propagation optical path from the first lens 300 to the second lens 400, the second blocking plate 620 can block the emitted light from the first light source group 100a and the second light source group 100b. This achieves complete isolation between the first and second optical paths, preventing crosstalk between the emitted light patterns before superposition. This improves the purity and independent controllability of the central ADB light pattern P2 and the broadened ADB light pattern P1, and also enhances the contrast and sharpness of the final ADB light pattern.

[0093] Optionally, the thickness of the first barrier plate 610 and the second barrier plate 620 may be the same or different.

[0094] Optionally, the height of the first barrier plate 610 and the second barrier plate 620 may be slightly greater than the height of the second lens 400. For example, the height of the first barrier plate 610 and the second barrier plate 620 may be 16 mm.

[0095] Optionally, the surface of the first barrier plate 610 near the second light source group 100b is coplanar with the surface of the second barrier plate 620 near the first light source group 100a. This improves the ease of assembly of the first barrier plate 610 and the second barrier plate 620.

[0096] Optionally, the first barrier plate 610 and the second barrier plate 620 are arranged at an acute angle to the second direction. For example, the angle between the first barrier plate 610 and the second barrier plate 620 and the second direction can be 3°, 4°, 5°, etc., and can be flexibly arranged according to the actual situation.

[0097] like Figures 1 to 4As shown, in some embodiments, the light-incident surface of the second lens portion 320 is the same as a portion of the light-incident surface of the first lens portion 310, the light-exiting surface of the second lens portion 320 is the same as a portion of the light-exiting surface of the first lens portion 310, and the third lens portion 410 and the fourth lens portion 420 are the same and arranged in an array.

[0098] The fact that the light-incident surface of the second lens section 320 is identical to a portion of the light-incident surface of the first lens section 310 means that the light-incident surface of the second lens section 320 reuses the structure of a portion of the light-incident surface of the first lens section 310, and the surface shape of a portion of the light-incident surface of the second lens section 320 is the same as that of a portion of the light-incident surface of the first lens section 310. Similarly, the light-exiting surface of the second lens section 320 is the same as the surface shape of a portion of the light-exiting surface of the first lens section 310. The second lens section 320 can be considered as being formed by cutting off a portion of the first lens section 310.

[0099] The third lens section 410 and the fourth lens section 420 are identical and arranged in an array. That is, the light-incident surface and the light-exit surface of the third lens section 410 are the same as the light-incident surface and the light-exit surface of the fourth lens section 420, respectively. The third lens section 410 and the fourth lens section 420 are two completely identical components.

[0100] With this configuration, firstly, the light-incident and light-exit surfaces of the second lens section 320 reuse a portion of the corresponding surface shapes of the light-incident and light-exit surfaces of the first lens section 310. The third lens section 410 and the fourth lens section 420 are identical optical units, allowing the central ADB beam pattern P2 ultimately formed by the second optical path to be considered as a portion of the broadened ADB beam pattern P1 located in the middle region. The central ADB beam pattern P2 and the broadened ADB beam pattern P1 possess the same light processing characteristics and good superposition matching, enabling pixel-level superposition and improving the quality and illumination performance of the final ADB beam pattern. Secondly, the reuse of the surface shapes of the two lens sections of the first lens 300 and the reuse of the structures of the two lens sections of the second lens 400 also helps to reduce manufacturing complexity and cost.

[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 in this embodiment are based on the same inventive concept as the adaptive high beam module 10 in the above embodiments. Therefore, the vehicle headlights can obtain the beneficial effects of the adaptive high beam module 10 in the corresponding embodiments.

[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 reflector is disposed on the light-emitting side of the light source assembly, and the reflector includes a plurality of reflective surfaces that are disposed one-to-one with the light-emitting surface of the light-emitting unit; A first lens and a second lens are provided. The first lens is disposed on the reflected light path of the reflector, and the second lens is located on the side of the first lens away from the reflector. The emitted light from the light source assembly is reflected by the reflector to the first lens, projected by the first lens to the second lens, and emitted by the second lens to form an ADB light pattern. Both the first lens and the second lens are convex lenses, and the light-emitting surface of the second lens is a plane.

2. The adaptive high beam module according to claim 1, characterized in that, The light-incident surface and the light-exit surface of the first lens are both aspherical. And / or, the incident surface of the second lens is an aspherical surface; And / or, optical microstructures are formed on the plane.

3. The adaptive high beam module according to claim 1, characterized in that, The adaptive high beam module also includes a light-blocking plate, which is disposed between the light source assembly and the first lens; When viewed along the second direction, the orthographic projection of all the light-emitting units is located within the orthographic projection of the light-blocking plate, and the orthographic projection of the reflector partially overlaps with the orthographic projection of the light-blocking plate. The second direction is perpendicular to the first direction.

4. The adaptive high beam module according to claim 3, characterized in that, The light-emitting unit is disposed on one side of the reflector along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; When viewed along the second direction, the width of the overlapping area between the orthographic projection of the reflector and the orthographic projection of the light-blocking plate is less than or equal to 0.5 mm.

5. The adaptive high beam module according to claim 1, characterized in that, The plurality of light-emitting units are divided into a first light source group and a second light source group along the first direction; The reflector is two, namely a first reflector and a second reflector, the first reflector being opposite to the first light source group, and the second reflector being opposite to the second light source group; The first lens includes a first lens portion and a second lens portion respectively disposed corresponding to the first reflector and the second reflector; the second lens includes a third lens portion and a fourth lens portion respectively disposed corresponding to the first lens portion and the second lens portion. The first light source group, the first reflector, the first lens section, and the third lens section constitute a first optical path for forming a broadened ADB light pattern. The second light source group, the second reflector, the second lens section, and the fourth lens section constitute a second optical path for forming a central ADB light pattern; The broadened ADB light pattern is superimposed with the central ADB light pattern to form the ADB light pattern.

6. The adaptive high beam module according to claim 5, characterized in that, The number of light-emitting units in the first light source group is greater than the number of light-emitting units in the second light source group; On the target plane, the boundary of the central ADB beam shape in the first direction lies within the boundary of the extended ADB beam shape in the first direction.

7. The adaptive high beam module according to claim 5, characterized in that, The plurality of reflecting surfaces of the first reflector include two first reflecting surfaces located at the beginning and end and a plurality of second reflecting surfaces located in the middle, wherein the width of at least one first reflecting surface is greater than the width of the second reflecting surface; The plurality of reflecting surfaces of the second reflector have the same width.

8. The adaptive high beam module according to claim 5, characterized in that, It also includes a first barrier plate and a second barrier plate. One end of the first barrier plate is disposed between the first light source group and the second light source group, and the other end extends along the second direction and is opposite to the boundary between the light incident surfaces of the first lens portion and the second lens portion. The second direction is perpendicular to the first direction. The second barrier plate extends along the second direction, with one end of the second barrier plate facing the boundary between the light-emitting surfaces of the first lens portion and the second lens portion, and the other end facing the boundary between the light-incident surfaces of the third lens portion and the fourth lens portion.

9. The adaptive high beam module according to claim 5, characterized in that, The light-incident surface of the second lens is the same as a portion of the light-incident surface of the first lens, and the light-exiting surface of the second lens is the same as a portion of the light-exiting surface of the first lens; The third lens section and the fourth lens section are identical and arranged in an array.

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

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