Vehicle lamp module and vehicle

Abstract

A vehicle lamp module and a vehicle. The vehicle lamp module comprises: a first-stage optical component (10), which is configured to receive light emitted from a light source (20) and primarily shape the light so as to decrease the emergent angle of the light in the extension direction of a vertical axis; the light source (20), which is arranged close to a light-incident surface of the first-stage optical component (10), wherein the light-emergent direction of the light source (20) is directed to the light-incident surface of the first-stage optical component (10); and a second-stage optical component (30), which is arranged close to a light-emergent surface (12) of the first-stage optical component (10) and is configured to re-collimate the light that enters the second-stage optical component (30) after being shaped by means of the first-stage optical component (10), causing emergent light to approximate parallel light, wherein a pattern (31) is provided on a light-emergent surface (12) of the second-stage optical component (30), the arch height of the pattern (31) is greater than 0 and less than or equal to 0.1 mm, and the pattern (31) is configured to adjust the diffusion angle of the emergent light in the extension direction of a transverse axis to be in a range of 0.5-3°.

Description

Vehicle light module and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 2023115250189, filed with the Patent Office of China on November 16, 2023, entitled “A Vehicle Lamp Module and Vehicle,” the entire contents of which are hereby incorporated by reference into this application. This application claims priority to Chinese patent application No. 2025100597773, filed with the Patent Office of China on January 15, 2025, entitled “A Vehicle Lamp Module and Vehicle,” the entire contents of which are hereby incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of lighting technology, and in particular to a vehicle light module and a vehicle. Background Art

[0004] Currently, combination headlights using ADB matrix light modules offer diverse functions and improve nighttime driving safety, becoming a trend in automotive lighting development. Combination headlights using ADB matrix light modules utilize multiple controllable light blocks and utilize hardware and software systems such as onboard cameras to achieve various functions, including light bending, anti-glare, and light pattern expansion. However, existing light modules produce projection patterns with significant dispersion and edge aberration.

[0005] Application Contents

[0006] Based on this, it is necessary to provide a vehicle light module and a vehicle to address at least some of the problems raised above.

[0007] According to a first aspect of the present disclosure, there is provided a vehicle lamp module, comprising: a primary optical component for receiving light emitted by a light source and performing primary shaping of the light to reduce an emission angle of the light in a direction extending along a vertical axis;

[0008] a light source, disposed near the light incident surface of the primary optical component, wherein the light emitting direction of the light source is toward the light incident surface of the primary optical component; and

[0009] A secondary optical component is arranged near the light-emitting surface of the primary optical component, and is used to re-collimate the light entering the secondary optical component after being shaped by the primary optical component, so that the emergent light is close to parallel light; and the light-emitting surface of the secondary optical component is provided with a pattern, and the arch height of the pattern is greater than 0 and less than or equal to 0.1mm, which is used to adjust the diffusion angle of the emergent light in the direction extending along the transverse axis to 0.5-3°.

[0010] According to a second aspect of the present disclosure, a vehicle is provided, comprising the vehicle light module.

[0011] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to better describe and illustrate the application disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the accompanying drawings should not be considered to limit the scope of the disclosed application, the presently described embodiments and / or examples, and any of the best modes currently understood for these applications.

[0013] FIG1 is a schematic diagram of a headlight module of a conventional technical solution;

[0014] FIG2 is a diagram showing the effect of aberration at the side edge of a conventional vehicle lamp module, which results in a decrease in pixel imaging quality at the side edge (the framed area is the pixel aberration area);

[0015] FIG3 is a schematic diagram of the light path of a vehicle light module provided in one embodiment of the present application;

[0016] FIG4 is a schematic diagram of the optical path in the primary optical component in FIG3 ;

[0017] FIG5 is a light effect diagram of the dispersion optimization of the present application;

[0018] FIG6 is a diagram showing the effect of the edge pixel light type optimization of the present application;

[0019] FIG7 is a vehicle light module provided by an embodiment of the present application

[0020] FIG8 is a schematic diagram of the light path of a vehicle light module provided in one embodiment of the present application;

[0021] FIG9 is a schematic diagram of the light-emitting surface of the primary optical component of the present application;

[0022] FIG10 is a schematic diagram showing that the angle between the cross section of the variable curvature dimming surface I and the xy plane is 60°;

[0023] FIG11 is a schematic diagram of the refraction of light hitting the variable curvature dimming surface I;

[0024] FIG12 is a schematic diagram of the refraction of light hitting the variable curvature dimming surface II;

[0025] FIG13 is a structural diagram of the second light-emitting curved surface;

[0026] FIG14 is a schematic diagram of the refraction of light hitting the second light emitting curved surface;

[0027] FIG15 is a schematic diagram of the light-emitting side of a secondary optical component;

[0028] FIG16 is a perspective schematic diagram of the vehicle light module provided by the present application;

[0029] FIG17 is a cross-sectional view of FIG16 taken along the xy plane;

[0030] FIG18 is a schematic diagram of a single pixel after dispersion optimization in the projection pattern of the present application; FIG18( a ) is a single pixel diagram of the conventional solution of FIG1 , and FIG18( b ) is a single pixel diagram of the present application;

[0031] FIG19 is a schematic diagram of a single pixel near a side edge in a projection pattern of the present application after aberration optimization; FIG19( a ) is a single pixel image of a side edge of the conventional solution of FIG1 , and FIG19( b ) is a single pixel image of a side edge of the present application;

[0032] In the figure, 10, primary optical component; 12, light-emitting surface; 121, first light-emitting curved surface; 121a, variable curvature dimming surface I; 121b, variable curvature dimming surface II; 122, second light-emitting curved surface; 122a, circular surface segment; 122b, arc surface segment; 123, positioning and connecting injection molding surface; 20, light source; 30, secondary optical component; 31, pattern; 311, pattern unit; 32, light incident side; 33, light-emitting side; 40, positioning bracket; 50, shading fixing bracket; 60, radiator. DETAILED DESCRIPTION

[0033] The present application will be further described below with reference to the accompanying drawings.

[0034] To facilitate understanding of the present application, a more comprehensive description of the various embodiments defined in the claims of the present application will be provided below with reference to the relevant drawings. Preferred embodiments of the present application are shown in the drawings, which contain various specific details to assist in such understanding, but these details should be considered as merely exemplary. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Accordingly, those of ordinary skill in the art will recognize that changes and improvements may be made to the various embodiments described herein without departing from the scope of the present application as defined by the appended claims. In addition, descriptions of well-known functions and configurations may be omitted for clarity and brevity.

[0035] It will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for the purpose of explanation only and not for the purpose of limiting the present application as defined by the appended claims.

[0036] Throughout the specification and claims of this application, the words "comprise" and "include" and variations of the words, such as "including" and "comprising" mean "including but not limited to", and are not intended to (and will not) exclude other components, integers or steps. Features, integers or characteristics described in conjunction with a particular aspect, embodiment or example of the present application will be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.

[0037] It should be understood that the singular forms "a", "an", and "the" include plural references unless the context clearly dictates otherwise. The expressions "including" and / or "may include" as used in this application are intended to indicate the presence of corresponding functions, operations, or elements, and are not intended to limit the presence of one or more functions, operations, and / or elements. In addition, in this application, the terms "including" and / or "having" are intended to indicate the presence of characteristics, quantities, operations, elements, and components, or combinations thereof, disclosed in the application documents. Therefore, the terms "including" and / or "having" should be understood as additional possibilities of the presence of one or more other characteristics, quantities, operations, elements, and components, or combinations thereof.

[0038] In this application, the expression "or" includes any or all combinations of the words listed together. For example, "A or B" may include A or B, or may include both A and B.

[0039] It should be understood that when an element is referred to as being “fixed to” another element, it can be directly on the other element or there may also be an intervening element; when an element is considered to be “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or there may also be an intervening element.

[0040] The terms "up", "down", "left", "right", etc. mentioned in the text are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with the context of the relevant art and this specification, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0042] In order to accurately describe the technical content of this application and to accurately understand this application, the following explanations or definitions are given for some terms used in this specification before describing the specific implementation methods.

[0043] The pixel in this application refers to the smallest division unit of the projected pattern of the optical module, that is, the projected pattern is composed of multiple pixels; dispersion refers to the difference between the color of the boundary of a single pixel and the color of the pixel itself; aberration refers to the phenomenon that the light around the pixel deviates from the optical axis and is deformed due to the relatively dispersed distribution of the projected light energy on the projection surface.

[0044] Regarding spatial orientation, Figures 3, 8, and 16 illustrate spatial coordinate axes with the light emission center of light source 20 as the coordinate origin o. The vertical axis is parallel to the z-axis in Figure 16, the longitudinal direction of the components arranged sequentially from the light source is parallel to the x-axis, and the transverse axis is parallel to the y-axis in Figure 16. When the present application is configured as shown in Figure 16, the horizontal plane is parallel to the xy plane.

[0045] The mainstream design of ADB modules currently on the market places the light-emitting surface of the ADB concentrator 1' at the focal point of a projection lens 2', projecting the ADB concentrator 1' to infinity through the projection lens 2'. A specific scheme is shown in Figure 1. The inventors have discovered that this design suffers from two technical drawbacks: First, using the concentrator 1' for imaging at the lens focal point makes it impossible to control the image quality of the pixels of the ADB projection pattern (pixels are affected by aberrations such as spherical aberration), especially pixels at the side edges of the projection pattern are prone to aberrations, as shown in Figure 2; and second, individual pixel boundaries may exhibit chromatic aberration.

[0046] As shown in Figures 3 and 4, a vehicle light module includes:

[0047] The primary optical component 10 is used to receive the light emitted by the light source and perform primary shaping on the light to reduce the emission angle of the light in the direction extending along the vertical axis;

[0048] The light source 20 is disposed near the light incident surface of the primary optical component 10 , with the light emitting direction of the light source 20 being toward the light incident surface of the primary optical component, and is disposed near the focal point of the light incident surface of the primary optical component 10 ;

[0049] The secondary optical component 30 is arranged near the light-emitting surface of the primary optical component 10, and is used to re-collimate the light entering the secondary optical component 30 after being shaped by the primary optical component, so that the final emitted light is close to parallel light; and the light-emitting side 33 of the secondary optical component 30 is provided with a pattern 31, and the arch height of the pattern 31 is greater than 0 and less than or equal to 0.1 mm, which is used to adjust the diffusion angle of the emitted light in the direction extending along the transverse axis (y direction) to 0.5-3°.

[0050] Specifically, the primary optical component 10 can use a TIR-type light collecting unit 10a as the incident end for introducing light. The light collecting unit 10a is opposite the light source 20 (such as an LED), and the light source 20 can be located near the focus of the light collecting unit 10a. After the light emitted by the light source 20 is concentrated by the light collecting unit 10a, it can collect as much energy as possible from the light source. The light output surface of the primary optical component 10 performs primary shaping on the light output from the light source, converting it from a Lambertian distribution to an energy distribution form with a smaller output angle, achieving primary collimation of the light. It can also achieve constrained control of the energy distribution of a single pixel in the direction extending along the vertical axis (z direction), controlling the surface shape in the vertical direction.

[0051] The secondary optical component 30 re-collimates the optical light shaped by the primary optical component 10, so that the final outgoing light is close to a parallel light. In addition, the pattern 31 on the light-emitting side 33 of the secondary optical component 30 limits the diffusion angle of the outgoing light in the direction extending along the transverse axis (y direction) (the angle between the two outgoing light rays c1 and c2 emitted from the light-emitting side 33 of the secondary optical component 30 in Figure 17) to between 0.5-3°, thereby realizing the diffusion angle constraint control of a single pixel in the y direction (reducing dispersion) and the constraint control of the energy distribution. When the arch height of the pattern 31 is equal to 0, the energy distribution of the light is too constrained, the boundary of a single pixel is sharp, the connection effect between two adjacent pixels is poor, and even dark stripes will appear between two adjacent pixels; when the arch height of the pattern 31 is greater than 0.1mm, the constraint on the energy distribution is weak, and the effect of improving aberration and dispersion is not obvious.

[0052] In the present application, through the far-field optical design method, the primary optical component 10 and the secondary optical component 30 are used to collimate the outgoing light of the light source in two directions, thereby reducing the output angle of the light and weakening the phenomenon of dispersion at the edge of a single pixel in traditional single-lens imaging. Figure 5 shows that the color of the pixel boundary and the middle part of the pixel are basically the same, and there is no obvious dispersion.

[0053] The light-emitting surface of the primary optical component 10 can control the surface shape change along the extension direction of the vertical axis (z direction), thereby realizing the constrained control of the energy distribution of a single pixel in the vertical direction; the pattern 31 on the light-emitting surface of the secondary optical component 30 can realize the constrained control of the diffusion angle and energy distribution of a single pixel in the extension direction of the horizontal axis (y direction). Compared with the light effect of the traditional scheme (as shown in Figure 2), the present application weakens the light shape deformation of the pixels at the side edges of the overall projection pattern (for example, there is no deformation in the upper left corner of Figure 6, and Figure 6 is a rectangular pattern as a whole), thereby improving the imaging quality of the pixels at the side edges in the y direction.

[0054] It is worth noting that the arch height of the pattern 31 refers to the maximum dimension of the surface of the pattern 31 protruding from the reference plane, with the light-emitting surface where the pattern 31 is located as the reference plane.

[0055] 4 , the light-emitting surface structure of the primary optical component 10 is at least two curved surfaces 11 arranged in sequence along the vertical axis extension direction, which are used to adjust the surface shape of the light emitted from the light-emitting surface of the primary optical component 10 in the vertical axis (z direction) extension direction. The curved surface 11 can be set as a cylinder, and the directrix of the cylinder is an arc-shaped line segment that bulges in the middle toward the side away from the light source. The plane where the directrix is ​​located is perpendicular to the xy plane. The arc-shaped line segment is used as the directrix and the horizontal axis extending along the y direction is used as the main line. The curved surface 11 can be formed by moving the arc-shaped line segment.

[0056] The multiple connected curved surfaces 11 arranged in sequence along the vertical axis can perform primary shaping on the LED light along the vertical axis (z direction), reducing the light emission angle, thereby achieving light collimation and facilitating the elimination of dispersion.

[0057] Moreover, the multi-segment cylindrical surface 11 can control the surface shape change along the vertical axis extension direction, realize the energy distribution constraint control of a single pixel in the vertical direction, eliminate the aberration of the vertical edges of the pixel, thereby reducing the deformation of the pixel light type at the vertical edges, and improving the imaging quality of the pixel in the vertical direction.

[0058] The incident end of the primary optical component 10 includes a plurality of light collecting units 10 a arranged in upper and lower rows, and the number of the light collecting units 10 a in the lower row is greater than or equal to the number of the light collecting units 10 a in the upper row.

[0059] The light collecting units 10a can be divided into two rows and provided in plurality. Different numbers and positions of light collecting units 10a can be selected, and the light sources 20 corresponding to the light collecting units 10a can be selectively lit to form different light types such as high beam type or low beam type, or light types with other functions.

[0060] As shown in Figures 7 to 9, a headlight module is provided. In a Cartesian coordinate system, the headlight module has a longitudinal axis extending along the x-direction and along the light-emitting direction, a transverse axis extending along the y-direction, and a vertical axis extending along the z-direction; the headlight module includes a light source 20, a primary optical component 10, and a secondary optical component 30 arranged in sequence along the longitudinal axis; a light-shielding fixing bracket 50 is provided on the periphery of the headlight module, and a heat sink 60 is provided on the side of the light source 20 away from the primary optical component 10; a circuit board of the light source 20 is fixed to the heat sink 60, and the heat sink 60 is used to dissipate heat for the headlight module when in operation.

[0061] The light emitting surface 12 of the primary optical component 10 protrudes in a direction away from the light source 20. The light emitting surface 12 includes a first light emitting curved surface 121 and a second light emitting curved surface 122 that are sequentially arranged and connected in the extension direction of the vertical axis. The first light emitting curved surface 121 and the second light emitting curved surface 122 are separated by the light emitting optical axis of the light source 20.

[0062] In the direction along the vertical axis and gradually away from the second light-emitting curved surface 122, the first light-emitting curved surface 121 includes a variable curvature dimming surface I 121a and a variable curvature dimming surface II 121b arranged in sequence; and in the direction along the vertical axis and gradually away from the second light-emitting curved surface 122, the angle between the tangent plane of the variable curvature dimming surface I 121a and the xy plane gradually decreases from 76° to 60°, and the angle between the tangent plane of the variable curvature dimming surface II 121b and the xy plane gradually decreases from 60° to 30°.

[0063] The secondary optical component 30 has a plurality of pattern units 311 on its light-emitting side.

[0064] As shown in Figures 9 to 11, the variable curvature dimming surface I121a collimates the light near the middle of the primary optical component 10 in the vertical direction, and the angle between the section of the variable curvature dimming surface I121a and the xy plane gradually decreases from 76° to 60°, so that the light in the middle and upper part converges more toward the middle and upper part of the pixel, and the energy is concentrated. It can be seen from Figure 14(a) that the light in the middle and upper part of the traditional scheme is scattered and the brightness is dim. In Figure 14(b) of this embodiment, the brightness of the middle and upper area of ​​a single pixel is stronger, the light deviating from the center area is less, and the pixel edge is sharper, which reduces the aberration and dispersion around the middle and upper part of the pixel.

[0065] Referring to Figure 12, the angle between the cross-section of the variable curvature dimming surface II121b and the xy plane gradually decreases from 60° to 30°. The variable curvature dimming surface II121b refracts the light near the upper edge of the primary optical component 10 obliquely upward, so that this part of the light is adjusted to diverge upward and will not enter the secondary optical component 30 forward, reducing the energy distribution of the edge of a single pixel finally presented. As can be seen from Figure 18(b), compared with Figure 18(a), the range of the upper edge lighting area becomes smaller, and the aberration of the upper edge is significantly weakened; at the same time, it is beneficial to reduce the light diffusion exit angle. As can be seen from Figure 18(a), the upper edge of the traditional solution is yellowish and has obvious dispersion. Compared with the traditional solution, the yellow color of the upper edge of Figure 18(b) of the present application is significantly lighter, and the dispersion is improved.

[0066] Referring to FIG15 , the light-exiting side of the secondary optical component 30 includes a plurality of pattern units 311 arranged in an array. The arch height of each pattern unit 311 is greater than 0 and less than or equal to 0.1 mm, and is used to adjust and limit the lateral diffusion angle of the outgoing light (the angle between the two outgoing light rays c1 and c2 emitted from the light-exiting side 33 of the secondary optical component 30 in FIG17 ) to between 0.5° and 3°. Thus, each pattern unit can respectively implement lateral diffusion angle constraints (reducing dispersion) and energy distribution and surface shape constraints for a single pixel. When the arch height of the pattern unit 311 is equal to 0, the energy distribution of the light is too constrained, the boundaries of a single pixel are sharp, the connection between adjacent pixels is poor, and even dark stripes and gaps may appear between adjacent pixels. When the arch height of the pattern unit 311 is greater than 0.1 mm, the energy distribution is less constrained, and the effect of improving aberrations and dispersion is not obvious.

[0067] It is worth noting that the arch height of a single pattern unit 311 refers to the maximum dimension of the surface of a single pattern unit 311 protruding from the reference plane with the light-emitting side 33 where the pattern unit 311 is located as the reference plane.

[0068] In other embodiments, along the vertical axis and gradually away from the second light-emitting curved surface 122, the angle between the tangent plane of the variable-curvature dimming surface I 121a and the xy plane gradually decreases from a maximum angle A greater than 60° to 60°, and the maximum angle A can reach 90°. In this embodiment, the upper-middle light can be converged toward the center of the pixel, and the aberration and dispersion around the upper-middle portion of the pixel can be controlled. However, the brightness of the upper-middle region of the projected single pixel is not as high as when the maximum angle A is 76° in the aforementioned embodiment, and relatively more light will deviate from the center region.

[0069] 13 and 14 , the second light-emitting curved surface 122 includes a circular surface segment 122a and an arcuate surface segment 122b. The circular surface segment 122a and the arcuate surface segment 122b are arranged in sequence along the vertical axis and gradually away from the first light-emitting curved surface 121. The radius of curvature R of the circular surface segment 122a is 1.5 mm to 2.0 mm, and the angle between the tangent surface of the arcuate surface segment 122b and the xy plane is 25° to 35°.

[0070] Taking the case where the radius of curvature R of the circular surface segment 122a is 1.5 mm and the angle between the section of the arc surface segment 122b and the xy plane is 30° as an example: the circular surface segment 122a and the arc surface segment 122b collimate the light close to the middle of the primary optical element 10, so that the light in the middle and lower part converges more toward the middle of the pixel, and the energy is concentrated. From Figure 18(a), it can be seen that the light in the lower part of the traditional scheme is scattered and the brightness is uneven. The brightness of the lower part of the single pixel in Figure 18(b) of this embodiment is more concentrated, the light deviating from the center area is less, and the edge of the lower part of the pixel is sharper, which is beneficial to reducing the aberration around the lower part of the pixel; at the same time, it can be seen from Figure 18(a) that the lower edge of the traditional scheme is obviously bluish and the dispersion is obvious. Compared with the traditional scheme, the lower edge of Figure 18(b) of the present application is light yellow, and the dispersion is improved.

[0071] The curvature radius R of the circular surface segment 122a of the present application can also be 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, and the angle between the cross section of the arc surface segment 122b and the xy plane can also be 27°, 29°, 31°, 33°, 35°, etc., which is not limited here.

[0072] 15 , the lateral diffusion coefficient of the pattern unit 311 is (-2, 2), and the dimension along the lateral axis (y direction) is 2 mm to 3 mm; the vertical diffusion coefficient is (0, -1.6), and the dimension along the vertical axis (z direction) is 2.5 mm to 3.5 mm.

[0073] The diffusion coefficient is a commonly used optical design parameter in LucidShape, a computer-aided design software widely used in the optical design industry for lighting and optical product design simulation. This embodiment reduces the diffusion coefficient of the pattern element 311 by narrowing the angle of light emitted from that element. This effectively reduces the dispersion at the boundaries of individual pixels corresponding to those elements, optimizing the optical effects of both individual pixels and the overall image.

[0074] Moreover, by controlling the lateral dimension range of the pattern unit 311 to be between 2mm and 3mm and the vertical dimension range to be between 2.5mm and 3.5mm, the lateral and vertical energy distribution of a single pixel corresponding to a single pattern unit 311 can be constrained and controlled. In FIG19(a), the lateral dimension of a single pixel near the side edge of the projection pattern of the conventional scheme is large and more light deviates from the central area, while the size of a single pixel at the side edge of the projection pattern of FIG19(b) in the present application is smaller, especially the light deviates less in the extension direction along the lateral axis (y direction), thereby controlling the surface deformation of the single pixel at the side edge of the projection pattern and improving the imaging quality of the side edge of the projection pattern.

[0075] Referring to Figure 17 , the light-emitting surface 12 of the primary optical component 10, when cut along the xy plane, forms a curved light-emitting cutoff line. The middle portion of the cutoff line is concave toward the side closest to the light source, and the diameter D of the cutoff line is between 400 mm and 500 mm. In this embodiment, taking a diameter D of 450 mm as an example, by designing the curvature of the light-emitting surface 12 of the primary optical component 10, the distance between each two adjacent pixels in the horizontal direction can be made closer, which facilitates the connection between adjacent pixels and forms a complete light pattern. At the same time, the energy distribution and diffusion angle of each pixel in the horizontal axis direction can be adjusted and constrained to be narrowed.

[0076] Of course, the diameter D of the light output cutoff line of the present application can also be 450 mm, 460 mm, 470 mm, 480 mm, 490 mm, 500 mm, etc., which is not limited here.

[0077] Referring to Figure 17, the light incident side 32 of the secondary optical component 30 is a curved surface with the middle part convex toward the side close to the light source 20, and the light emitting side 33 of the secondary optical component 30 is a curved surface with the middle part convex toward the side away from the light source 20, and the curvature of the surface of the light incident side 32 is smaller than the curvature of the surface of the light emitting side 33; the curvature radius r1 of the surface of the light incident side 32 is 250mm-300mm, and the curvature radius r2 of the surface of the light emitting side 33 is 50mm-55mm.

[0078] During the optical system design process, under a given focal length and lens opening size, the deflection angle of light in the entire system is a fixed value. If the light incident side 32 of the secondary optical component 30 is a plane, the light emitting side 33 needs to be designed with a very large curvature. The large curvature of one side of the light emitting side 33 will cause the surface to deflect the light too violently and cause great aberration at the side edge of the secondary optical component 30.

[0079] Take the curvature radius r1 of the light incident side 32 as 250mm and the curvature radius r2 of the light exit side 33 as 53mm as an example to illustrate: In this embodiment, in order to reduce the aberration, the secondary optical component 30 does not adopt the traditional plano-convex lens design, but the light incident side 32 and the light exit side 33 both adopt a curved surface design and the curvature of each side is not large, so that the incident angle / exit angle of the light on each surface of the light incident side 32 and the light exit side 33 is not large (instead of using a single side surface to cause excessive deflection of the light), so that the overall aberration of the secondary optical component 30 will be reduced; on the other hand, due to the primary optical component 1 0 has limited collimation effect on light. The light path after being collimated once by the primary optical component 10 is not completely parallel to the x-direction. Therefore, the incident angle of the light contacting the surface of the light incident side 32 is too large, which makes Fresnel reflection prone to occur, and the light cannot enter the secondary optical component 30 and be effectively utilized. Therefore, the present application designs the surface curvature of the light incident side 32 to be smaller than the surface curvature of the light emitting side 33. The smaller surface curvature of the light incident side 32 can avoid Fresnel reflection caused by the incident angle of the light hitting the surface of the light incident side 32 being too large, thereby avoiding light loss caused by Fresnel reflection, and ensuring the brightness of the projection pattern while reducing aberrations.

[0080] Of course, the curvature radius r1 of the curved surface on the light incident side 32 of the present application can also be 260mm, 270mm, 280mm, 290mm, 300mm, etc., and the curvature radius r2 of the curved surface on the light exit side 33 can also be 50mm, 51mm, 52mm, 54mm, 55mm, etc.

[0081] 16 , the vehicle lamp module further includes a positioning bracket 40 ;

[0082] The light emitting surface 12 further includes a positioning and connecting injection molding surface 123, which is provided on a side of the first light emitting curved surface 121 away from the second light emitting curved surface 122 and connected to the first light emitting curved surface 121;

[0083] The positioning bracket 40 covers the primary optical component 10 from the side of the primary optical component 10 away from the light source 20 , and the positioning bracket 40 is bonded to the positioning connection injection molding surface 123 .

[0084] During construction, the positioning bracket 40 and the primary optical component 10 are manufactured by two injection molding processes. For example, the positioning bracket 40 is first formed, and then the primary optical component 10 is secondary injection molded into the cavity of the positioning bracket 40. After the primary optical component 10 is cured, the positioning connection injection molding surface 123 is connected to the positioning bracket 40. During the curing process of the primary optical component 10, its edge will cool and shrink. If the positioning connection injection molding surface 123 is not provided, the positioning bracket 40 will directly contact the first light-emitting curved surface 121 at the edge of the primary optical component 10, and the first light-emitting curved surface 121 will deform during the curing and cooling shrinkage. This will fail to achieve the desired effect of eliminating aberrations or dispersion, and may even cause serious deformation of the light projection pattern.

[0085] In this embodiment, the positioning bracket 40 covers the primary optical component 10 and is connected to the positioning connection injection surface 123, which can fix the primary optical component 10 and prevent the primary optical component 10 from shaking and causing unstable light patterns.

[0086] 15 , the pattern unit 311 is rectangular, diamond-shaped, or circular.

[0087] The multiple pattern units 311 arranged in an array on the lens surface can reshape the LED light from multiple locations on the lens surface. The lateral diffusion angle of the light is limited at each location on the lens surface, so that the final emitted light forms parallel light, which is conducive to achieving a better dispersion elimination effect.

[0088] In addition, the multiple pattern units 311 arranged in an array on the lens surface can respectively control the lateral changes of the surface shape, and constrain the diffusion angle and energy distribution of each single pixel of the LED output light in the y direction from multiple positions on the lens surface, thereby basically eliminating the lateral aberration in the xy plane, reducing the lateral deformation of the pixels on the side of the secondary optical component 30, and improving the lateral imaging quality of the pixels on the side edge of the secondary optical component 30.

[0089] Referring to Figure 15 , the dome height of the pattern unit 311 is 0.1 mm. Actual tests have confirmed that when the dome height of the pattern unit 311 is 0.1 mm, the lens light-exit surface 12 can minimize the lateral diffusion angle of the emitted light, achieving the strongest constraint control over the energy distribution of a single pixel in the x-direction. This further eliminates lateral edge aberrations and lateral deformation of pixels near the side edges of the secondary optical component 30, achieving optimal lateral imaging quality for pixels near the side edges of the secondary optical component 30.

[0090] The present application also provides a vehicle, which includes the above-mentioned headlight module. The vehicle of the present application includes vehicles such as motor vehicles and non-motor vehicles, and is not limited to the type of vehicle.

[0091] In the above description, although expressions such as "first" and "second" may be used to describe various elements of the present application, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of the corresponding elements. The above expressions are used to distinguish one component from another.

[0092] The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. A singular expression includes a plural expression unless there is a significant difference in context or scheme between them.

[0093] The above description is merely an exemplary embodiment of the present application and is not intended to limit the scope of protection of the present application. The scope of protection of the present application is determined by the appended claims.

[0094] Those skilled in the art will understand that the various technical features of the above-described embodiments may be omitted, added, or combined in any manner accordingly. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, and simple transformation methods that can be thought of by those skilled in the art, as well as solutions for making adaptive and functional structural transformations of existing technologies, should be considered to be within the scope of this specification.

[0095] The above-described embodiments merely represent several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that although the present application has been shown and described with reference to various embodiments, it is apparent to those skilled in the art that various variations and improvements in form and detail may be made without departing from the concept of the present application, and without departing from the scope of the present application as defined by the appended claims, and such variations and improvements shall fall within the scope of protection of the present application. Therefore, the scope of protection of the patent application shall be based on the appended claims.

Claims

1. A vehicle light module, comprising: A primary optical component, used for receiving the light emitted by the light source and performing primary shaping of the light to reduce the emission angle of the light in the direction extending along the vertical axis; A light source is arranged close to the light incident surface of the primary optical component, and the light emitting direction of the light source is toward the light incident surface of the primary optical component; as well as, A secondary optical component is arranged close to the light-emitting surface of the primary optical component, and is used to re-collimate the light entering the secondary optical component after being shaped by the primary optical component, so that the emergent light is close to parallel light; and the light-emitting surface of the secondary optical component is provided with a pattern, and the arch height of the pattern is greater than 0 and less than or equal to 0.1mm, which is used to adjust the diffusion angle of the emergent light in the extension direction along the transverse axis to 0.5-3°.

2. According to the vehicle lamp module according to claim 1, the light-emitting surface structure of the primary optical component is at least two curved surfaces arranged in sequence along the extension direction of the vertical axis, which are used to adjust the surface shape of the light emitted from the light-emitting surface of the primary optical component along the extension direction of the vertical axis.

3. According to the vehicle light module of claim 2, the curved surface is a cylinder; the directrix of the cylinder is an arc line convex in the middle toward the side away from the light source, and the plane where the directrix is ​​located is perpendicular to the xy plane; with the arc line as the directrix and the transverse axis as the generatrix, the arc line is moved to form the cylinder.

4. The vehicle light module according to any one of claims 1 to 3, wherein the vehicle light module has a longitudinal axis extending along the x direction, a transverse axis extending along the y direction, and a vertical axis extending along the z direction in a Cartesian coordinate system: The light emitting surface of the primary optical component protrudes in a direction away from the light source, and the light emitting surface includes a first light emitting curved surface and a second light emitting curved surface which are sequentially arranged and connected in the extending direction of the vertical axis, and the first light emitting curved surface and the second light emitting curved surface use the light emitting optical axis of the light source as a dividing line; in, In the direction along the vertical axis and gradually away from the second light-emitting curved surface, the first light-emitting curved surface includes a variable curvature dimming surface I and a variable curvature dimming surface II arranged in sequence; and in the direction along the vertical axis and gradually away from the second light-emitting curved surface, the angle between the tangent plane of the variable curvature dimming surface I and the xy plane gradually decreases, and the angle between the tangent plane of the variable curvature dimming surface II and the xy plane gradually decreases from 60° to 30°.

5. The vehicle lamp module according to claim 4, wherein in a direction along the vertical axis and gradually away from the second light emitting curved surface, the angle between the tangent plane of the variable curvature dimming surface I and the xy plane gradually decreases from 76° to 60°.

6. According to the vehicle light module according to claim 4, the second light-emitting curved surface includes a circular surface segment and an arc surface segment, and the circular surface segment and the arc surface segment are arranged in sequence along the vertical axis and gradually away from the first light-emitting curved surface, the curvature radius R of the circular surface segment is 1.5mm-2.0mm, and the angle between the tangent surface of the arc surface segment and the xy plane is 25°-35°.

7. According to the vehicle light module according to any one of claims 1-6, the light-emitting surface of the secondary optical component is provided with a plurality of pattern units, the lateral diffusion coefficient of the pattern unit is (-2, 2), and / or the vertical diffusion coefficient of the pattern unit is (0, -1.6).

8. According to the vehicle lamp module according to any one of claims 1-6, the light-emitting surface of the secondary optical component is provided with a plurality of pattern units, the size of the pattern unit along the extension direction of the transverse axis is 2mm-3mm, and / or the size of the pattern unit along the extension direction of the vertical axis is 2.5mm-3.5mm.

9. According to any one of claims 1-6, the light emitting surface of the primary optical component has a light emitting cutoff line formed by cutting the light emitting surface with the xy plane as the cross section, which is an arc, the middle of the light emitting cutoff line is concave toward the side close to the light source, and the diameter D of the light emitting cutoff line is 400mm to 500mm.

10. According to the vehicle light module according to any one of claims 1-6, the light incident side of the secondary optical component is a curved surface convex from the middle part toward the side close to the light source, the light emitting side of the secondary optical component is a curved surface convex from the middle part toward the side far from the light source, and the curvature of the curved surface on the light incident side is smaller than the curvature of the curved surface on the light emitting side.

11. According to any one of claims 1-6, the curvature radius of the curved surface of the secondary optical component on the light incident side is 250mm-300mm, and the curvature radius of the curved surface of the secondary optical component on the light emitting side is 50mm-55mm.

12. The vehicle light module according to any one of claims 1 to 6, further comprising a positioning bracket; The light emitting surface further comprises a positioning and connecting injection molding surface, which is arranged on a side of the first light emitting curved surface away from the second light emitting curved surface and connected to the first light emitting curved surface; in, The positioning bracket covers the primary optical component from a side of the primary optical component away from the light source, and the positioning bracket is bonded and connected to the positioning connection injection molding surface.

13. The vehicle lamp module according to any one of claims 1 to 6, wherein the pattern on the light-emitting surface of the secondary optical component is a plurality of pattern units arranged in an array, and the pattern units are rectangular, rhombus or circular.

14. According to the vehicle lamp module according to any one of claims 1-6, the light-emitting surface of the secondary optical component is provided with a plurality of pattern units, the arch height of the pattern units is greater than 0 and less than or equal to 0.1 mm, and is configured to adjust the lateral diffusion angle of the emitted light to be between 0.5-3°. 15 . The vehicle lamp module according to claim 14 , wherein the arch height of the pattern unit is 0.1 mm.

16. A vehicle, comprising the vehicle light module according to any one of claims 1-15.

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