High beam module and vehicle lamp

Abstract

The application provides a high beam module and a vehicle lamp. The high beam module comprises a light source for emitting light; a high beam lens arranged on the light emitting side of the light source, the high beam lens being an integral structure, the high beam lens comprising a light inlet surface, a first total reflection surface, a second total reflection surface, a third total reflection surface and a light outlet surface, the second total reflection surface and the third total reflection surface being oppositely arranged along a first direction, the light outlet surface being located on one side of the third total reflection surface along a second direction, the light emitted by the light source being projected to the first total reflection surface through the light inlet surface, the parallel light being formed after being reflected by the first total reflection surface, the parallel light being reflected by the second total reflection surface and the third total reflection surface in sequence, and the parallel light being emitted by the light outlet surface to form a high beam light pattern; the light outlet surface comprises a plurality of sub-light outlet surfaces arranged in sequence along a third direction, and the distance between the root of each sub-light outlet surface and the light source along the second direction gradually increases along the third direction. The application can improve the light efficiency of the high beam module while ensuring the narrow opening size.

Description

Technical Field

[0001] This application relates to the field of high beam technology, and in particular to a high beam module and vehicle headlight. Background Technology

[0002] With the development of automotive lighting technology and the diversification of automotive headlight designs, ultra-narrow lens modules with high luminous efficiency are becoming increasingly popular.

[0003] Most existing high beam lighting modules typically consist of two or more lens layers, including an inner lens and an outer lens. On the one hand, the outer lens needs to maintain a large size to collect light, ensuring sufficient luminous flux and illumination effect. This limits the variation in the size of the outer lens and makes it difficult to achieve an ultra-narrow aperture size for high beam lighting modules. Ultra-narrow high beam lighting modules have become one of the industry's development trends.

[0004] On the other hand, light loses light as it passes through different media such as lenses and air layers, reducing luminous efficiency. Furthermore, with the diversity of vehicle designs, in order to match the high beam lighting module with the overall vehicle shape, the light-emitting surface of the outer lens is often made with a conformal design, which further reduces the luminous efficiency. Utility Model Content

[0005] This application provides a high beam module and vehicle headlight, aiming to improve the problems of large opening size and low light output efficiency of high beam lighting modules in related technologies.

[0006] In a first aspect, this application provides a high beam module, comprising: a light source for emitting light; and a high beam lens disposed on the light-emitting side of the light source. The high beam lens is an integrally formed structure, comprising an incident surface, a first total reflection surface, a second total reflection surface, a third total reflection surface, and an emitting surface. The second and third total reflection surfaces are disposed opposite to each other along a first direction, and the emitting surface is located on one side of the third total reflection surface along a second direction. Light emitted by the light source is projected onto the first total reflection surface through the incident surface, and after being reflected by the first total reflection surface, parallel light is formed. The parallel light is reflected sequentially by the second and third total reflection surfaces and emitted from the emitting surface to form a high beam pattern. The emitting surface comprises a plurality of sub-emitting surfaces arranged sequentially along a third direction. The distance between the root of each sub-emitting surface and the light source in the second direction gradually increases along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0007] The high beam module of this application embodiment uses a single high beam lens with an integrated molding structure to achieve the high beam pattern. With this configuration, firstly, the second and third total internal reflection surfaces fold the light path along a "Z" shape, allowing the light to be effectively collected and adjusted within a narrow lens space. Thus, in the first direction, the light-emitting surface does not require a large opening size to efficiently receive reflected light, significantly reducing the size of the light-emitting surface in the first direction, thereby facilitating the narrow opening design requirement of the high beam module. Secondly, firstly, after the emitted light from the light source enters the high beam lens, it completes its light path propagation through total internal reflection. No light passes through the lens / air interface, effectively reducing Fresnel loss and dispersion, and improving luminous efficiency. Secondly, the light-emitting surface includes multiple sub-light-emitting surfaces arranged in a stepped manner along a third direction. This allows for a conformal design of the light-emitting surface, and each sub-light-emitting surface can independently form an optical adjustment area, improving the light loss and scattering problems caused by the inability of traditional conformal lenses to adapt their global focal length to all areas, thereby further improving the luminous efficiency. Therefore, the embodiments of this application can improve the light output efficiency of the high beam module while ensuring the narrow opening size.

[0008] In some embodiments, the light-emitting surface further includes multiple connecting surfaces, and two adjacent sub-light-emitting surfaces are connected through the connecting surfaces, which are perpendicular to the third direction.

[0009] First, the connecting surface can serve as a reference for optical partitioning, dividing the continuous and complex light-emitting surface into multiple independent sub-light-emitting surfaces. This facilitates the fabrication of each sub-light-emitting surface and reduces costs. Second, each connecting surface also participates in light distribution as a light-emitting surface. Unexpected scattering or refraction of light may occur at the edges of the sub-light-emitting surfaces, but the connecting surface allows edge light to exit, preventing it from becoming stray light loss or forming dark areas at the edges of the light spot. This ensures that the final synthesized high-beam spot is continuous, seamless, and has a natural transition. This also helps to improve the sharpness and uniformity of the high-beam pattern and further enhances luminous efficiency.

[0010] In some embodiments, the lengths of all the connecting surfaces in the second direction are the same. This arrangement, on the one hand, improves the ease of manufacturing each sub-light-emitting surface and reduces costs. On the other hand, it enhances the styling diversity and aesthetics of the conformal design of the light-emitting surfaces.

[0011] In some embodiments, the length of each connecting surface in the second direction gradually increases along the third direction.

[0012] This design, combined with multiple sub-light-emitting surfaces, can produce a total of four schemes, which helps to further improve the styling diversity and aesthetics of the conformal design of the light-emitting surface.

[0013] In some embodiments, the light-emitting surface and the third total reflection surface are configured to converge the light along the first direction, and the second total reflection surface is configured to converge the light along the third direction.

[0014] This embodiment enables a separate horizontal and vertical focusing design, facilitating the projection of a high beam pattern that is wider horizontally and narrower vertically, thereby improving the performance of the high beam module. Furthermore, it allows for a further reduction in the size of the light-emitting surface in the first direction, thus further enabling the narrow aperture design of the high beam module.

[0015] In some embodiments, the sub-light-emitting surfaces are all convex cylindrical surfaces extending along the first direction arc, and the radius of the cylindrical surface is greater than or equal to 40 mm.

[0016] The cylindrical structure is simple, which facilitates the manufacturing of each sub-light-emitting surface and reduces costs. Furthermore, the cylindrical radius is greater than or equal to 40mm, and the cylindrical surface is designed with a large radius of curvature, which can avoid excessive light refraction, improve astigmatism and field curvature, and thus help improve the light output effect of the high beam pattern.

[0017] In some embodiments, the radii of all the sub-emitting surfaces are the same. This improves the ease of manufacturing each sub-emitting surface and reduces costs while increasing the emitted light efficiency.

[0018] In some embodiments, the light-emitting surface has a first side and a second side disposed opposite to each other along the third direction, the second side being located on the side of the first side away from the light source, and the radius of each of the sub-light-emitting surfaces gradually increases from the first side to the second side.

[0019] In this embodiment, the radius of each sub-light-emitting surface is set to gradually increase along the direction from the first side to the second side, which can achieve shape-matching of the focal length of each sub-light-emitting surface and compensate for optical path difference. This is beneficial to further improve the light output efficiency of the high beam module.

[0020] In some embodiments, there are multiple light sources, which are arranged at intervals along the third direction. There are multiple incident surfaces and multiple first total reflection surfaces. The incident surfaces and the first total reflection surfaces correspond one-to-one, and the incident surfaces and the light sources correspond one-to-one. Each first total reflection surface corresponds to the same second total reflection surface and the same third total reflection surface.

[0021] On the one hand, it helps improve the light collection and collimation effect. On the other hand, the number and arrangement density of light sources can be flexibly adjusted according to lighting needs, which also helps improve the versatility and expandability of the high beam module. In addition, the sharing of the second and third total reflection surfaces by multiple light sources also helps to improve the processing convenience of the second and third total reflection surfaces and reduce costs.

[0022] In some embodiments, the plurality of light sources include a plurality of single-core LEDs and a plurality of dual-core LEDs, wherein the plurality of single-core LEDs are disposed on both sides of the plurality of dual-core LEDs along the third direction.

[0023] By using dual-core LEDs, the widening portion of the high beam pattern can be achieved, while the center brightness portion of the high beam pattern can be achieved using single-core LEDs on both sides. Combining these two elements creates a high beam pattern that meets the required specifications.

[0024] Secondly, embodiments of this application propose a vehicle headlight, including the high beam module described in the first aspect. This facilitates improved luminous efficacy of the headlight while maintaining a narrow aperture size. Attached Figure Description

[0025] Figure 1 This is a side view of the high beam module provided in an embodiment of this application;

[0026] Figure 2 This is a top view of the high beam module provided in an embodiment of this application.

[0027] Figure 3 This is a three-dimensional structural diagram of the high beam module provided in the embodiments of this application;

[0028] Figure 4 This is a bottom-view structural diagram of the high beam module provided in the embodiments of this application;

[0029] Figure 5 This is a schematic diagram of the high beam module provided in an embodiment of this application from one perspective.

[0030] Figure 6 A schematic diagram illustrating the propagation of light from the high beam module provided in this embodiment of the application through the high beam lens;

[0031] Figure 7 A simplified schematic diagram of the optical path propagation of the high beam module provided in the embodiments of this application;

[0032] Figure 8 This is a diagram showing the illumination effect of the widened portion of the high beam pattern of the high beam module in an embodiment of this application.

[0033] Figure 9 This is a diagram showing the illumination effect of the center brightness portion of the high beam pattern of the high beam module in an embodiment of this application.

[0034] Figure 10 This is a diagram illustrating the lighting effect of the high beam pattern of the high beam module according to an embodiment of this application.

[0035] The annotations in the attached figures are explained as follows:

[0036] 10. High beam module;

[0037] 100. Light source; 110. Single-core LED; 120. Dual-core LED;

[0038] 200, High beam lens; 210, Light incident surface; 211, Recessed portion; 220, First total reflection surface; 230, Second total reflection surface; 240, Third total reflection surface; 250, Light emitting surface; 251, Sub-light emitting surface; 252, First side; 253, Second side; 254, Connecting surface; 260, First surface; 270, Second surface; 261, Light guide tooth structure. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] As described in the background section, existing high-beam lighting modules have the following problems:

[0044] First, the outer lens needs to be large to collect light in order to ensure sufficient light flux and illumination effect. This limits the size variation of the outer lens and is not conducive to achieving an ultra-narrow aperture size in the high beam lighting module. However, ultra-narrow high beam lighting modules have become one of the industry development trends.

[0045] Secondly, when light is emitted, it passes through different media such as lenses and air layers, resulting in light loss and dispersion, which leads to a reduction in light efficiency.

[0046] Third, with the increasing diversity of vehicle designs, in order to match the high beam lighting module with the overall vehicle design, the light-emitting surface of the outer lens is often made with a conformal design, which leads to a further reduction in light output efficiency.

[0047] Based on the above problems, this application proposes a high beam module and vehicle headlight to improve the problems of large opening size and low light output efficiency.

[0048] like Figures 1 to 5 As shown, in a first aspect, this application provides a high beam module 10. The high beam module 10 includes a light source 100 and a high beam lens 200. The light source 100 emits light, and the high beam lens 200 is disposed on the light-emitting side of the light source 100. The high beam lens 200 is an integrally formed structure, including a light-incident surface 210, a first total reflection surface 220, a second total reflection surface 230, a third total reflection surface 240, and a light-emitting surface 250. The second total reflection surface 230 and the third total reflection surface 240 are arranged opposite each other along a first direction Z, and the light-emitting surface 250 is located on one side of the third total reflection surface 240 along a second direction X. Figure 6 and Figure 7 As shown, the light emitted by the light source 100 is projected onto the first total internal reflection surface 220 through the light incident surface 210. After being reflected by the first total internal reflection surface 220, it forms parallel light. The parallel light is reflected sequentially by the second total internal reflection surface 230 and the third total internal reflection surface 240, and is emitted from the light emitting surface 250 to form a high beam pattern. The light emitting surface 250 includes a plurality of sub-light emitting surfaces 251 arranged sequentially along the third direction Y. The distance between the root of each sub-light emitting surface 251 and the light source 100 in the second direction X gradually increases along the third direction Y. The first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0049] It is understandable that the first direction Z, the second direction X, and the third direction Y constitute a three-dimensional coordinate system. The plane formed by the second direction X and the third direction Y is the horizontal plane, the first direction Z is the longitudinal direction, and the third direction Y is the lateral direction. When installed on a vehicle, the first direction Z can be the vehicle's height direction, the second direction X can be the vehicle's front-to-back direction, and the third direction Y can be the vehicle's left-to-right direction.

[0050] Light source 100 provides initial light, and light source 100 can be an LED (Light Emitting Diode) chip. The light emitted from light source 100 directly enters the light-incident surface 210 of high beam lens 200.

[0051] The high beam lens 200 integrates all optical functional surfaces; in other words, the high beam lens 200 realizes the single-lens structure design of the high beam module 10. The high beam lens 200 can be made of optical plastics with high light transmittance, high refractive index, high temperature resistance, and good weather resistance, such as polymethyl methacrylate (PMMA) and polycarbonate (PC).

[0052] The incident surface 210 receives the original diverging light emitted by the light source 100. Please refer to [reference needed]. Figure 3 and Figure 4 To improve the light-collecting ability of the light-incident surface 210, a recess 211 can be provided on the light-incident surface 210, with the light source 100 facing the recessed surface of the recess 211. In this way, the large-angle diverging light emitted by the light source 100 can enter the interior of the high beam lens 200 as much as possible through the recess 211, thereby improving the light throughput.

[0053] The first total internal reflection surface 220 performs total internal reflection on the light rays that have been initially adjusted by the incident light surface 210, forming parallel light. The first total internal reflection surface 220 can be, for example, a reflective bowl surface. Since the first total internal reflection surface 220 initially reflects the diverging light into parallel light, and parallel light is easier to control in subsequent reflection and emission processes, the optical path is more compact, which helps to improve the convenience of optical path design.

[0054] It should be noted that parallel light refers to a beam of light that maintains a consistent direction during propagation without divergence or convergence. However, in reality, due to limitations such as manufacturing and installation errors, the light rays after total internal reflection by the first total internal reflection surface 220 may not be perfectly parallel. Therefore, in the above-mentioned parallel light, the light rays are parallel and / or approximately parallel, that is, roughly parallel.

[0055] The second total internal reflection surface 230 receives the parallel light beam from the first total internal reflection surface 220 and, in conjunction with the third total internal reflection surface 240, sequentially performs total internal reflection on the parallel light beam, projecting it onto the light-emitting surface 250. These two surfaces work together to fold the parallel light beam within the module, compressing and redirecting the light in the first direction Z, guiding it to the final light-emitting surface 250.

[0056] The light-emitting surface 250 is composed of multiple sub-light-emitting surfaces 251 arranged sequentially along the third direction Y. The distance from the root of each sub-light-emitting surface 251 to the light source 100 gradually increases along the third direction Y in the second direction X. That is, when viewed in the XY plane, the multiple sub-light-emitting surfaces 251 of the light-emitting surface 250 form a continuous stepped shape. The root of the sub-light-emitting surface 251 refers to the connection position between the sub-light-emitting surface 251 and the substrate of the telephoto lens 200.

[0057] Understandably, referring to Figure 1 , Figure 2 and Figure 5 The light-emitting surface 250 includes a first side 252 and a second side 253 arranged opposite each other along a third direction Y. The distance between the root of each sub-light-emitting surface 251 and the light source 100 in the second direction X gradually increases along the third direction Y. This means that, along the direction from the first side 252 to the second side 253, the distance between the root of each sub-light-emitting surface 251 and the light source 100 in the second direction X gradually increases. In this case, the distance between the first side 252 and the light source 100 in the second direction X will be smaller than the distance between the second side 253 and the light source 100 in the second direction X. Alternatively, along the direction from the second side 253 to the first side 252, the distance between the root of each sub-light-emitting surface 251 and the light source 100 in the second direction X gradually increases. In this case, the distance between the first side 252 and the light source 100 in the second direction X will be greater than the distance between the second side 253 and the light source 100 in the second direction X. Therefore, the light-emitting surface 250 can be designed with a tortuous, contoured shape along the third direction Y, meeting the overall vehicle styling requirements.

[0058] The high beam module 10 of this application embodiment uses a single high beam lens 200 with an integrally molded structure to achieve the high beam pattern. Specifically, the light from the light source 100 is reflected by the first total reflection surface 220 to form parallel light. Then, the parallel light undergoes two total reflections in sequence by the second total reflection surface 230 and the third total reflection surface 240, which are arranged opposite each other along the first direction Z, and is emitted from the light emitting surface 250 to form the high beam pattern. With this arrangement, firstly, the second total reflection surface 230 and the third total reflection surface 240 fold the light path along a "Z" shape, so that the light can be effectively collected and adjusted within a narrow lens space. In this way, the light emitting surface 250 does not need a large opening size in the first direction Z to efficiently receive reflected light, so that the size of the light emitting surface 250 in the first direction Z is significantly reduced, thereby facilitating the narrow opening design requirement of the high beam module 10.

[0059] Secondly, firstly, after the light emitted from the light source 100 enters the high-beam lens 200, it propagates through total internal reflection, essentially combining the outer and inner lenses in a traditional solution. No light passes through the lens / air interface, effectively reducing Fresnel loss and dispersion, and improving luminous efficiency. Secondly, the light-emitting surface 250 includes multiple sub-light-emitting surfaces 251 arranged in a stepped manner along the third direction Y. This allows for a conformal design of the light-emitting surface 250. Furthermore, compared to the overall conformal large curved surface in related technologies, each sub-light-emitting surface 251 can independently form an optical adjustment area. This enables each sub-light-emitting surface 251 to more precisely and efficiently calibrate the light in different areas, forming zoned light calibration. This helps to improve the light loss and scattering problems caused by the inability of the global focal length of traditional conformal lenses to adapt to all areas, thereby further improving the light output efficiency.

[0060] Therefore, the embodiments of this application can improve the light output efficiency of the high beam module 10 while ensuring the narrow opening size.

[0061] Furthermore, the high beam module 10 of this application embodiment achieves optical path folding through total internal reflection within the high beam lens 200, which also helps to reduce the size and weight of the lens, thus contributing to energy saving and cost reduction.

[0062] Optionally, the light-emitting surface 250 of the high beam lens 200 has a dimension along the first direction Z of less than or equal to 12mm, such as 10mm, 10.5mm, 11mm, 11.5mm, 12mm, etc., which can be flexibly designed according to the actual situation.

[0063] Optionally, the width of each sub-emitting surface 251 along the third direction Y can be 5mm.

[0064] Optionally, along the third direction Y, the width of each sub-emitting surface 251 is smaller than the width of the first total reflection surface 220. For example, the width of each sub-emitting surface 251 is less than half the width of the first total reflection surface 220. In this way, multiple sub-emitting surfaces 251 can be more finely divided, thereby further improving the light efficiency.

[0065] like Figures 1 to 5 As shown, in some embodiments, the light-emitting surface 250 further includes a plurality of connecting surfaces 254, and two adjacent sub-light-emitting surfaces 251 are connected by connecting surfaces 254, with the connecting surfaces 254 being perpendicular to the third direction Y.

[0066] In this embodiment, the light-emitting surface 250 also includes a connecting surface 254 located between two adjacent sub-light-emitting surfaces 251. First, the connecting surface 254 can serve as a reference for optical partitioning, dividing the continuous and complex light-emitting surface 250 into multiple independent sub-light-emitting surfaces 251, thereby improving the ease of manufacturing each sub-light-emitting surface 251 and reducing costs. Second, each connecting surface 254 also participates in light distribution as a light-emitting surface. Unexpected scattering or refraction of light may occur at the edges of the sub-light-emitting surfaces 251, and the connecting surface 254 can allow edge light to exit, avoiding stray light loss or the formation of dark areas at the edges of the light spot, ensuring that the final synthesized high-beam spot is continuous, seamless, and has a natural transition, which also helps to improve the sharpness and uniformity of the high-beam pattern, as well as further improve the luminous efficiency.

[0067] Optionally, in some embodiments, the dimensions of each connecting surface 254 are the same in the second direction X. That is, in the second direction X, the distance between the roots of two adjacent sub-light-emitting surfaces 251 is the same. This arrangement, on the one hand, facilitates the manufacturing of each sub-light-emitting surface 251 and reduces costs. On the other hand, it enhances the styling diversity and aesthetics of the conformal design of the light-emitting surface 250.

[0068] Optionally, refer to Figures 1 to 5 In other embodiments, the length of each connecting surface 254 in the second direction X gradually increases along the third direction Y.

[0069] This design, in conjunction with multiple sub-emitting surfaces 251, can produce four configurations. The first configuration involves the distance between the root of each sub-emitting surface 251 and the light source 100 in the second direction X gradually increasing along the direction from the first side 252 to the second side 253; simultaneously, the length of each connecting surface 254 in the second direction X gradually increases along the same direction. The second configuration involves the same arrangement: the distance between the root of each sub-emitting surface 251 and the light source 100 in the second direction X gradually increases along the same direction; simultaneously, the length of each connecting surface 254 in the second direction X gradually increases along the same direction. The third configuration involves the same arrangement: the distance between the root of each sub-emitting surface 251 and the light source 100 in the second direction X gradually increases along the same direction; simultaneously, the length of each connecting surface 254 in the second direction X gradually increases along the same direction. The fourth option is that, along the direction from the second side 253 to the first side 252, the distance between the root of each sub-light-emitting surface 251 and the light source 100 in the second direction X gradually increases, and at the same time, along the direction from the second side 253 to the first side 252, the length of each connecting surface 254 in the second direction X gradually increases.

[0070] This design helps to further enhance the styling diversity and aesthetics of the 250mm conformal surface.

[0071] It should be noted that the above are merely illustrative descriptions of several embodiments of the conformal design of the light-emitting surface 250 in this application. In related technologies, the area between the first side 252 and the second side 253 is a single, bent, extended conformal curved surface. In this application, the large curved surface in the related technologies is differentiated in the second direction X and the third direction Y, dividing it into multiple sub-light-emitting surfaces 251 and multiple connecting surfaces 254. Therefore, the width of the multiple sub-light-emitting surfaces 251 in the third direction Y and the dimensions of the multiple connecting surfaces 254 in the second direction X can be flexibly designed according to actual needs. For example, the width of the multiple sub-light-emitting surfaces 251 in the third direction Y can be made the same, then the dimensions of the multiple connecting surfaces 254 in the second direction X depend on the curvature change of the large curved surface; or, for another example, the dimensions of the multiple connecting surfaces 254 in the second direction X can be made the same, then the width of the multiple sub-light-emitting surfaces 251 in the third direction Y also depends on the curvature change of the large curved surface. This application does not impose any limitations on this.

[0072] In some embodiments, the light-emitting surface 250 and the third total reflection surface 240 are configured to converge light along the first direction Z, and the second total reflection surface 230 is configured to converge light along the third direction Y.

[0073] In this embodiment, each sub-light-emitting surface 251 of the light-emitting surface 250 and the third total reflection surface 240 can form a short focal length lens unit in the high beam lens 200. Multiple short lens units achieve convergence of light in the first direction Z, while the second total reflection surface 230 achieves convergence of light in the third direction Y. Thus, a high beam pattern that is wide laterally and narrow vertically can be projected in the far field.

[0074] In other words, this embodiment enables a horizontal and vertical focusing separation design, which facilitates the projection of a high beam pattern that is wide horizontally and narrow vertically, thereby improving the performance of the high beam module 10. Furthermore, it helps to further reduce the size of the light-emitting surface 250 in the first direction Z, thus further facilitating the fulfillment of the narrow opening design requirement of the high beam module 10.

[0075] Optionally, each sub-light-emitting surface 251 of the light-emitting surface 250 can be a convex surface along the first direction Z (i.e., longitudinal direction), the third total reflection surface 240 can be a curved surface or a plane, and the second total reflection surface 330 can be a concave surface along the third direction Z (i.e., transverse direction). However, this application does not limit the shape of the sub-light-emitting surface 251, the first total reflection surface 200, and the second total reflection surface 320, and it depends on the specific circumstances.

[0076] like Figure 5As shown, in some embodiments, the plurality of sub-light-emitting surfaces 251 are all convex cylindrical surfaces extending along the first direction Z arc, and the radius of the cylindrical surface is greater than or equal to 40mm.

[0077] The cylindrical surface can converge light rays in the first direction Z, but it does not converge light rays in the third direction Y. The cylindrical structure is simple, which facilitates the fabrication of each sub-light-emitting surface 251 and reduces costs.

[0078] Furthermore, the cylinder's radius is greater than or equal to 40mm, and the cylinder is designed with a large radius of curvature, which can avoid excessive light refraction, improve astigmatism and field curvature, and thus help improve the light output effect of the high beam pattern.

[0079] Optionally, the radius of the cylinder can be, for example, 40mm, 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, 49mm, 50mm, etc., and can be flexibly designed according to the actual situation.

[0080] like Figure 5 As shown, in some embodiments, the radii of each sub-emitting surface 251 are the same, that is, each sub-emitting surface 251 is an identical cylindrical surface. Therefore, while improving the emitted light efficiency, the manufacturing convenience of each sub-emitting surface 251 can be further improved, and costs reduced.

[0081] In some embodiments, the second side 253 is located on the side of the first side 252 away from the light source 100, and the radius of each sub-light-emitting surface 251 gradually increases from the first side 252 to the second side 253.

[0082] In this embodiment, the second side 253 is located on the side of the first side 252 away from the light source 100. That is, along the direction from the first side 252 to the second side 253, the distance between the root of each sub-light-emitting surface 251 and the light source 100 in the second direction X gradually increases.

[0083] Understandably, a larger radius results in a weaker ability to converge light, corresponding to a longer focal length. From the first side 252 to the second side 253, the distance between the root of the sub-light-emitting surface 251 and the light source 100 increases, increasing the distance the light travels and thus requiring a longer focal length to maintain focus. In this case, this embodiment sets the radius of each sub-light-emitting surface 251 to gradually increase along the direction from the first side 252 to the second side 253, enabling the focal length of each sub-light-emitting surface 251 to be matched accordingly, compensating for optical path differences. This, in turn, helps to further improve the light output efficiency of the high beam module 10.

[0084] like Figures 1 to 5As shown, in some embodiments, there are multiple light sources 100, which are arranged at intervals along the third direction Y. There are multiple light incident surfaces 210 and first total reflection surfaces 220. The light incident surfaces 210 and the first total reflection surfaces 220 correspond one-to-one, and the light incident surfaces 210 and the light sources 100 correspond one-to-one. Each first total reflection surface 220 corresponds to the same second total reflection surface 230 and the same third total reflection surface 240.

[0085] In this way, the emitted light from each light source 100 can be incident on a corresponding first total internal reflection surface 220 through a corresponding incident light surface 210 for convergence and collimation. On the one hand, this improves the light collection and collimation effect. On the other hand, the number and arrangement density of light sources can be flexibly adjusted according to lighting needs, which also improves the versatility and expandability of the high beam module 10. Subsequently, the light reflected by multiple first total internal reflection surfaces 220 is all projected onto the same second total internal reflection surface 230, and under the total internal reflection of the second total internal reflection surface 230 and the third total internal reflection surface 240, the high beam pattern is projected by the light emitting surface 250. Multiple light sources 100 share the second total internal reflection surface 230 and the third total internal reflection surface 240, which improves the processing convenience of the second total internal reflection surface 230 and the third total internal reflection surface 240 and reduces costs.

[0086] like Figure 3 and Figure 4 As shown, in some embodiments, the plurality of light sources 100 include a plurality of single-core LEDs 110 and a plurality of dual-core LEDs 120, with the plurality of single-core LEDs 110 disposed on both sides of the plurality of dual-core LEDs 120 along a third direction Y.

[0087] By using dual-core LEDs 120, the widening portion of the high beam pattern can be achieved, while the center brightness portion of the high beam pattern can be achieved using single-core LEDs 110 on both sides. By combining the two, a high beam pattern that meets the requirements can be achieved.

[0088] In a specific embodiment, such as Figures 1 to 5 As shown, there are 6 light sources 100, 6 light incident surfaces 210, and 6 first total reflection surfaces 220, and they are arranged in a one-to-one correspondence. Among them, along the third direction Y, the two in the middle are dual-core LEDs 120, which, together with the two corresponding first total reflection surfaces 220, realize the widening part of the high beam pattern; the two on both sides of the two dual-core LEDs 120 are single-core LEDs 110, which realize the central brightness part of the high beam pattern.

[0089] Please refer to Figure 8 , Figure 9 and Figure 10 , Figure 8 This is a diagram showing the illumination effect of the widened portion of the high beam pattern of the high beam module 10 according to an embodiment of this application. Figure 9This is a diagram showing the illumination effect of the center brightness portion of the high beam pattern of the high beam module 10 according to an embodiment of this application. Figure 10 This is a diagram illustrating the lighting effect of the high beam pattern of the high beam module 10 according to an embodiment of this application. As can be seen from the diagram, the high beam module 10 of this embodiment can achieve excellent lighting effect of the high beam pattern.

[0090] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the high beam lens 200 further includes a first surface 260 and a second surface 270 disposed opposite to each other along a first direction Z. The light-emitting surface 250 is connected to the third total reflection surface 240 through the first surface 260, and the light-emitting surface 250 is connected to the second total reflection surface 230 through the second surface 270. The first surface 260 and / or the second surface 270 are provided with light guide tooth structures 261 arranged along the first direction Z and extending along the third direction Y.

[0091] The light guide tooth structure 261 is serrated, including two intersecting tooth surfaces. When light propagates inside the high beam lens 200, some light inevitably enters the first surface 260 and / or the second surface 270. By setting the light guide tooth structure 261 on the first surface 260 and / or the second surface 270, this stray light can be reflected and refracted, separating the stray light from the main light path and guiding it to the non-light-emitting area. This eliminates stray light without affecting the propagation of the main light, thereby improving the lighting effect of the high beam pattern.

[0092] Secondly, embodiments of this application provide a vehicle headlight, including the high beam module 10 described in the first aspect.

[0093] This configuration has several advantages. First, the second total reflection surface 230 and the third total reflection surface 240 fold the light path along a "Z" shape, allowing the light to be effectively collected and adjusted within a narrower lens space. Thus, in the first direction Z, the light-emitting surface 250 does not require a large opening size to efficiently receive reflected light, significantly reducing its size in the first direction Z and facilitating the narrow opening design requirement of the high beam module 10. Second, firstly, no light passes through the lens / air interface, effectively reducing Fresnel loss and dispersion, and improving luminous efficiency. Secondly, it allows for a conformal design of the light-emitting surface 250, and each sub-light-emitting surface 251 can independently form an optical adjustment area, enabling zoned light calibration and further improving luminous efficiency. Therefore, this embodiment of the application can improve the luminous efficiency of the vehicle headlight while maintaining a narrow opening size.

[0094] 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. A high beam module, characterized in that, include: A light source, used to emit light; and A high-beam lens is disposed on the light-emitting side of the light source. The high-beam lens is an integrally formed structure. The high-beam lens includes an incident surface, a first total reflection surface, a second total reflection surface, a third total reflection surface, and an exiting surface. The second total reflection surface and the third total reflection surface are arranged opposite to each other along a first direction. The exiting surface is located on one side of the third total reflection surface along a second direction. The light emitted by the light source is projected onto the first total reflection surface through the incident surface. After being reflected by the first total reflection surface, parallel light is formed. The parallel light is reflected sequentially by the second total reflection surface and the third total reflection surface, and is emitted from the exiting surface to form a high-beam pattern. The light-emitting surface includes a plurality of sub-light-emitting surfaces arranged sequentially along a third direction. The distance between the root of each sub-light-emitting surface and the light source in the second direction gradually increases along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

2. The high beam module according to claim 1, characterized in that, The light-emitting surface also includes multiple connecting surfaces, and two adjacent sub-light-emitting surfaces are connected through the connecting surfaces, which are perpendicular to the third direction.

3. The high beam module according to claim 2, characterized in that, All of the connecting surfaces have the same length in the second direction; Alternatively, the length of each of the connecting surfaces in the second direction gradually increases along the third direction.

4. The high beam module according to claim 1, characterized in that, The light-emitting surface and the third total reflection surface are configured to converge the light along the first direction, and the second total reflection surface is configured to converge the light along the third direction.

5. The high beam module according to claim 4, characterized in that, The sub-light-emitting surfaces are all convex cylindrical surfaces extending along the first direction arc, and the radius of the cylindrical surface is greater than or equal to 40mm.

6. The high beam module according to claim 5, characterized in that, All of the described sub-emitting surfaces have the same radius.

7. The high beam module according to claim 5, characterized in that, The light-emitting surface has a first side and a second side disposed opposite to each other along the third direction, wherein the second side is located on the side of the first side away from the light source; From the first side to the second side, the radius of each of the sub-emitting light surfaces gradually increases.

8. The high beam module according to claim 1, characterized in that, There are multiple light sources, and the multiple light sources are arranged at intervals along the third direction; There are multiple light-incident surfaces and multiple first total internal reflection surfaces, and each light-incident surface corresponds to a first total internal reflection surface and each light-incident surface corresponds to a light source. Each of the first total reflection surfaces corresponds to the same second total reflection surface and the same third total reflection surface.

9. The high beam module according to claim 8, characterized in that, The plurality of light sources includes a plurality of single-core LEDs and a plurality of dual-core LEDs, wherein the plurality of single-core LEDs are disposed on both sides of the plurality of dual-core LEDs along the third direction.

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

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