High-beam lens and related lens module, and lighting module

Abstract

The present application relates to the technical field of vehicle lamps, and discloses a high-beam lens and a related lens module, and a lighting module. The high-beam lens comprises a first curved surface, a first total reflection surface, and a second total reflection surface which are integrally formed. First parallel light is incident from the first curved surface, converged by the first curved surface, and then sequentially reflected by the first total reflection surface and the second total reflection surface to become second parallel light, having a greater degree of convergence in a longitudinal direction than in a transverse direction. By means of the integrally formed high-beam lens, a greater degree of convergence in the longitudinal direction than in the transverse direction is achieved, facilitating the formation of a high-beam light pattern that is wide in the transverse direction and narrow in the longitudinal direction. The integrally formed high-beam lens is a single-layer lens structure, which effectively reduces Fresnel loss. Moreover, by utilizing total reflection, an optical path can be folded, the size can be shortened, and the volume and weight of the lens can be reduced while improving optical efficiency, which is beneficial for energy saving and cost reduction. In addition, along with fewer refractions, the projected light pattern has low chromatic dispersion and good color uniformity, and the lens has good consistency in terms of static appearance, which is conducive to meeting different styling requirements.

Description

High beam lenses and related lens modules, lighting modules Technical Field

[0001] This application relates to the field of automotive lighting technology, and in particular to a high beam lens and related lens modules and lighting modules. Background Technology

[0002] In related technologies, high beam illumination lens modules typically include two or more layers of lenses, including an inner lens and an outer lens. The outer lens is mostly a single-layer single-focal lens, or a single-layer multifocal lens composed of multiple single-layer single-focal lenses. In related technologies, high beam illumination lens modules have the following disadvantages: First, because a single-layer single-focal lens has the same focusing degree in both the horizontal and vertical directions, the controllability of the beam pattern, which is flat vertically and wide horizontally, is poor. Second, single-layer single-focal lenses are limited by aperture size and volume and weight. Once the horizontal aperture is long, the lens thickness and weight will increase accordingly, which is not conducive to the lightweighting of the lens module, nor to energy saving and cost reduction, and it is also not conducive to forming a horizontally elongated module shape, which has become one of the industry development trends. Third, single-layer multi-focal lenses are spliced ​​together from multiple single-layer single-focal lenses, resulting in a poor overall static appearance of the lens. Fourth, in existing high beam illumination lens modules, the inner and outer lenses are separated. The light emitted by the light source must pass through different media such as the inner lens, air, and outer lens, resulting in significant Fresnel loss and severe dispersion. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a high-beam lens and related lens modules and illumination modules. The integrated high-beam lens achieves a greater vertical convergence than horizontal convergence, effectively separating vertical and horizontal focusing, with a longer vertical focal length than the horizontal focal length, facilitating the creation of a high-beam pattern that is wider horizontally and narrower vertically. Furthermore, the integrated high-beam lens features a single-layer lens structure, effectively reducing Fresnel loss. Utilizing total internal reflection, it folds the optical path, shortening the size and improving luminous efficiency while reducing the lens's volume and weight, thus contributing to energy conservation and cost savings. Simultaneously, less refraction results in lower dispersion and better color uniformity of the projected light. Additionally, both the light-emitting surface and the total internal reflection surface can be complete surfaces, ensuring good consistency in the lens's static appearance and facilitating the creation of various shapes, such as horizontally elongated modules.

[0004] In a first aspect, embodiments of this application provide a high-beam lens, which is an integrally formed structure. The high-beam lens includes a first curved surface, a first total reflection surface, and a second total reflection surface. The first and second total reflection surfaces are disposed opposite each other along a first direction. The first curved surface is located on one side of the first total reflection surface along a second direction, and the first and second directions are perpendicular. When first parallel light is incident on the first curved surface, it is converged by the first curved surface, and then reflected sequentially by the first and second total reflection surfaces, converging along the first direction and then converging along a third direction to become second parallel light. The second parallel light is emitted towards the second total reflection surface along the second direction away from the first curved surface. The third direction is perpendicular to both the first and second directions. The ratio of the width of the first parallel light along the first direction to the width of the second parallel light along the first direction is greater than the ratio of the width of the first parallel light along the third direction to the width of the second parallel light along the third direction.

[0005] Optionally, the first curved surface has a first side and a second side disposed opposite to each other along a first direction. The first side of the first curved surface is connected to the first total reflection surface via a first connecting surface, which extends along a second direction. The second side of the first curved surface is connected to the second total reflection surface via a second connecting surface, which extends along a second direction.

[0006] Optionally, the high beam lens has a Z-shaped structure or an inverted Z-shaped structure.

[0007] Optionally, the first curved surface has a first side and a second side disposed opposite to each other along a first direction, the first side being directly connected to the first total reflection surface and the second side being directly connected to the second total reflection surface.

[0008] Optionally, the first surface is a complete freeform surface.

[0009] Optionally, the first total reflection surface is a complete freeform surface or a plane.

[0010] Alternatively, the high beam lens may be made of polymethyl methacrylate or polycarbonate.

[0011] Secondly, embodiments of this application provide a high-beam lens module, which includes a high-beam total internal reflection lens unit and a high-beam lens unit. The high-beam total internal reflection lens unit includes a first light-incident surface and a first reflective surface. The first light-incident surface is the surface of the high-beam total internal reflection lens unit that faces away from the high-beam lens unit, and the first reflective surface is deflected relative to the first light-incident surface. The high-beam lens unit is any of the high-beam lenses described above. Light emitted from an external light source is incident through the first light-incident surface, converges to the first reflective surface, and after reflection by the first reflective surface, becomes intermediate parallel light. The intermediate parallel light is then reflected sequentially by a second total internal reflection surface and the first total internal reflection surface, and finally exits from the first curved surface to form a high-beam beam pattern.

[0012] Optionally, the first incident light surface is saddle-shaped.

[0013] Optionally, the high beam total internal reflection lens unit and the high beam lens unit are integrally molded structures.

[0014] Optionally, the high beam total internal reflection lens unit and the high beam lens unit are separate structures.

[0015] Optionally, there are at least two high beam total internal reflection lens units, which are arranged side by side along a third direction. Each high beam total internal reflection lens unit corresponds to the same high beam lens unit.

[0016] Thirdly, embodiments of this application provide a high / low beam lens assembly, which includes a high beam lens module and a low beam lens module. The low beam lens module is used to form a low beam pattern and includes a low beam elbow lens unit and a low beam broadening lens unit. The low beam elbow lens unit is used to form a low beam elbow cutoff line pattern, and the low beam broadening lens unit is used to form a low beam broadening pattern. The low beam elbow cutoff line pattern and the low beam broadening pattern are combined to form the low beam pattern. The high beam lens module is used to form a high beam pattern, and the high beam lens module is any of the high beam lens modules described above.

[0017] Optionally, the low-beam elbow lens unit includes a low-beam elbow total internal reflection lens structure and a low-beam elbow focusing lens structure. The low-beam elbow focusing lens structure and the high-beam lens unit are integrally formed. The low-beam elbow focusing lens structure and the high-beam lens unit share a first curved surface and a first total reflection surface. The low-beam elbow focusing lens structure also includes a third total reflection surface. The third total reflection surface and the first total reflection surface are arranged opposite each other along a first direction, and the third total reflection surface and the second total reflection surface are arranged side by side along a third direction. When a beam of parallel light is incident on the first curved surface, it is converged by the first curved surface and then reflected sequentially by the first total reflection surface and the third total reflection surface, focusing at a first focal point. The distance between the geometric center of the first curved surface and the first focal point along a second direction is greater than the distance between the geometric center of the second total reflection surface and the first focal point along a second direction. The near-beam elbow-shaped total internal reflection lens structure includes a second incident surface and a second reflecting cup surface. The second incident surface is the surface of the near-beam elbow-shaped total internal reflection lens structure that faces away from the near-beam elbow-shaped focusing lens structure. The second reflecting cup surface is deflected relative to the second incident surface towards the near-beam elbow-shaped focusing lens structure. The first focal point is located on the edge of the second reflecting cup surface near the second incident surface. When light emitted from an external light source is incident through the second incident surface, it converges to the second reflecting cup surface. After being reflected by the second reflecting cup surface, it is then reflected sequentially by the third total internal reflection surface and the first total internal reflection surface, and finally exits through the first curved surface. The shape of the second reflecting cup surface is projected as the near-beam elbow-shaped cutoff line light pattern, and the edge of the second reflecting cup surface near the second incident surface is projected as the cutoff line of the near-beam elbow-shaped cutoff line light pattern.

[0018] Optionally, the near-beam elbow-shaped total internal reflection lens structure and the near-beam elbow-shaped focusing lens structure are integrally formed. The first light-incident surface and the second light-incident surface are arranged side by side along a third direction, and the first reflective cup surface and the second reflective cup surface are arranged side by side along a third direction.

[0019] Optionally, the near-beam broadening lens unit includes a near-beam broadening total internal reflection lens structure and a near-beam broadening focal line lens structure. The near-beam broadening focal line lens structure and the far-beam lens unit are integrally formed. The near-beam broadening focal line lens structure and the far-beam lens unit share a first curved surface and a first total reflection surface. The near-beam broadening focal line lens structure also includes a fourth total reflection surface. The fourth total reflection surface and the first total reflection surface are arranged opposite each other along a first direction, and the fourth total reflection surface and the second total reflection surface are arranged side by side along a third direction. When a beam of parallel light is incident from the first curved surface, it is converged by the first curved surface, and then reflected sequentially by the first total reflection surface and the fourth total reflection surface, converging along the first direction and parallel along the third direction, converging on the first focal line.

[0020] The near-beam broadening total internal reflection lens structure includes a third incident surface and a third reflecting cup surface. The third incident surface is the surface of the near-beam broadening total internal reflection lens structure that faces away from the near-beam broadening focal line lens structure. The third reflecting cup surface is deflected relative to the third incident surface towards the near-beam broadening focal line lens structure. The first focal line is located on the edge of the third reflecting cup surface near the third incident surface. When light emitted from an external light source is incident through the third incident surface, it converges to the third reflecting cup surface. After being reflected by the third reflecting cup surface, it is then reflected sequentially by the fourth total internal reflection surface and the first total internal reflection surface, and finally exits through the first curved surface. The shape of the third reflecting cup surface is projected as the near-beam broadening light pattern, and the edge of the third reflecting cup surface near the third incident surface is projected as the cutoff line of the near-beam broadening light pattern.

[0021] Optionally, the near-beam broadening total internal reflection lens structure and the near-beam broadening focal line lens structure are integrally formed. The first light-incident surface and the third light-incident surface are arranged side by side along the third direction, and the first reflection cup surface and the third reflection cup surface are arranged side by side along the third direction.

[0022] Optionally, there are two near-beam widening total internal reflection lens structures. These two structures are arranged adjacent to each other along a third direction, and symmetrically arranged along a second direction. Each of the two near-beam widening total internal reflection lens structures corresponds to the same near-beam widening focal line lens structure.

[0023] Optionally, the third total reflection surface is a concave surface along the third direction.

[0024] Fourthly, embodiments of this application provide a lighting module, including a light source module and a high / low beam lens assembly. The light source module includes multiple light sources, and the high / low beam lens assembly is any of the high / low beam lens assemblies described above.

[0025] Compared with related technologies, the above technical solution has the following advantages:

[0026] The high-beam lens provided in this embodiment is an integrally formed structure, including a first curved surface, a first total reflection surface, and a second total reflection surface. The first and second total reflection surfaces are arranged opposite each other along a first direction. The first curved surface is located on one side of the first total reflection surface along a second direction, and the first and second directions are perpendicular. The first parallel light is incident on the first curved surface, converged by the first curved surface, and then reflected sequentially by the first and second total reflection surfaces, converging along the first direction and then along a third direction to become the second parallel light. The second parallel light is emitted towards the second total reflection surface along the second direction away from the first curved surface. The third direction is perpendicular to the first direction and perpendicular to the second direction. The first, second, and third directions constitute a three-dimensional coordinate system. Thus, the first curved surface is mainly used to reflect the first total reflection light incident on the first curved surface. A parallel light beam converges along a first direction (i.e., longitudinally). The second total internal reflection surface is mainly used to converge the beam of the first parallel light incident from the first curved surface after reflection by the first total internal reflection surface along a third direction (i.e., laterally). The first total internal reflection surface is mainly used to match the first curved surface and the second total internal reflection surface, and also plays a partial converging role. The first and second total internal reflection surfaces also play a role in folding the light path. Furthermore, the ratio of the width of the first parallel light along the first direction to the width of the second parallel light along the first direction (characterizing the longitudinal convergence degree) is greater than the ratio of the width of the first parallel light along the third direction to the width of the second parallel light along the third direction (characterizing the lateral convergence degree), that is, the longitudinal convergence degree is greater than the lateral convergence degree. Therefore, the high beam lens provided in this application embodiment has the following technical effects:

[0027] First, by using an integrally molded high beam lens, the vertical convergence is greater than the horizontal convergence, which is equivalent to horizontal and vertical focus separation. The vertical focal length is greater than the horizontal focal length, which makes it easier to achieve a high beam pattern that is wide horizontally and narrow vertically. It also helps to narrow the opening size of the first curved surface as the light-emitting surface along the first direction (i.e., the vertical direction). For example, the size of the first curved surface along the first direction (i.e., the vertical direction) can be about 10mm.

[0028] Secondly, the one-piece high beam lens is a single-layer lens structure, which is equivalent to combining the outer lens and inner lens in the traditional solution into one, effectively reducing Fresnel loss. Moreover, by utilizing total internal reflection, the optical path can be folded and the size shortened. While improving light efficiency, the size and weight of the lens are reduced, which is conducive to energy saving and cost saving.

[0029] Third, the one-piece molded high beam lens has a single-layer lens structure, which has less refraction, resulting in less dispersion of the projected light and better color uniformity.

[0030] Fourth, the first curved surface can be a complete freeform surface, and the first total reflection surface can be a complete freeform surface or a plane, which makes the static appearance of the lens consistent and is conducive to meeting different shape requirements such as horizontal strip module shape.

[0031] Fifth, the one-piece molded high beam lens can also avoid the problem of multi-layer lenses being burned due to focusing sunlight. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 is a side view of a high beam lens provided in an embodiment of this application.

[0034] Figure 2 is a schematic diagram of another side view of a high beam lens provided in an embodiment of this application.

[0035] Figure 3 is a schematic diagram of the high beam lens shown in Figure 1 viewed from below.

[0036] Figure 4 is a top view of the high beam lens shown in Figure 1.

[0037] Figure 5 is a side view of a high beam lens module provided in an embodiment of this application.

[0038] Figure 6 is a top-down view of the high beam lens module shown in Figure 5.

[0039] Figure 7 is a side view schematic diagram of the light tracking of a high beam lens module provided in an embodiment of this application.

[0040] Figure 8 is a top view schematic diagram of the light tracing of a high beam lens module provided in an embodiment of this application.

[0041] Figure 9a is a bottom-view schematic diagram of a high beam lens module provided in an embodiment of this application.

[0042] Figure 9b is a top view of a high beam lens module provided in an embodiment of this application.

[0043] Figure 10 is a schematic diagram of a high and low beam lens assembly provided in an embodiment of this application from an oblique perspective.

[0044] Figure 11 is a schematic diagram of another oblique side view of a high and low beam lens assembly provided in an embodiment of this application.

[0045] Figure 12 is a schematic diagram of another oblique side view of a high and low beam lens assembly provided in an embodiment of this application.

[0046] Figure 13 is a bottom view of a high and low beam lens assembly provided in an embodiment of this application.

[0047] Figure 14 is a top view schematic diagram of a high and low beam lens assembly provided in an embodiment of this application.

[0048] Figure 15 is a schematic diagram of the front and side view of a high and low beam lens assembly provided in an embodiment of this application.

[0049] Figure 16 is a side view schematic diagram of a near-beam elbow lens unit provided in an embodiment of this application.

[0050] Figure 17 is a side view schematic diagram of a near-light elbow focusing lens structure provided in an embodiment of this application.

[0051] Figure 18 is a side view schematic diagram of another near-light elbow focusing lens structure provided in the embodiments of this application.

[0052] Figure 19 is a bottom-view schematic diagram of the near-light elbow focusing lens structure shown in Figure 17.

[0053] Figure 20 is a side view schematic diagram of a near-beam widening lens unit provided in an embodiment of this application.

[0054] Figure 21 is a side view schematic diagram of a near-light broadening focal line lens structure provided in an embodiment of this application.

[0055] Figure 22 is a side view schematic diagram of another near-light broadening focal line lens structure provided in the embodiment of this application.

[0056] Figure 23 is a bottom-view schematic diagram of the near-light broadening focal line lens structure shown in Figure 21.

[0057] Reference numerals: 100, First curved surface; 200, First total internal reflection surface; 320, Second total internal reflection surface; S1, First connecting surface; S2, Second connecting surface; 101, First side; 102, Second side; Z, First direction; X, Second direction; Y, Third direction; 500, Light source; 421, First incident light surface; 422, First reflecting bowl surface; HB1, High beam total internal reflection lens unit; HB2, High beam lens unit; HB, High beam lens module; LB, Low beam lens module; Kink, Low beam elbow lens unit; Flat 1. Near beam broadening lens unit; Kink1, near beam elbow-shaped total internal reflection lens structure; Kink2, near beam elbow-shaped focusing lens structure; 311, third total reflection surface; F, first focal point; 411, second incident light surface; 412, second reflection cup surface; Flat1, near beam broadening total internal reflection lens structure; Flat2, near beam broadening focal line lens structure; 312, fourth total reflection surface; FF, first focal line; 413, third incident light surface; 414, third reflection cup surface; 601, first edge; 602, second edge. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0059] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0060] This application is described in detail with reference to the schematic diagrams. For ease of explanation, the drawings illustrating the optical structures are partially enlarged, not to scale, and are merely examples; they should not limit the scope of protection of this application. Furthermore, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0061] As described in the background section, existing high beam illumination lens modules have the following disadvantages:

[0062] First, because a single-layer single-focal lens has the same focusing degree in both the horizontal and vertical directions, it has poor controllability for the beam pattern of distant beams that are flat vertically and wide horizontally.

[0063] Secondly, single-layer single-focus lenses are limited by aperture size and volume and weight. Once the horizontal aperture is long, the lens thickness will increase accordingly, and the lens weight will also increase. This is not conducive to the lightweighting of the lens module, nor to energy saving and cost saving. It is also not conducive to forming a horizontally elongated module shape, which has become one of the industry development trends.

[0064] Third, a single-layer multifocal lens is made up of multiple single-layer single-focal lenses, resulting in a poor overall static appearance of the lens.

[0065] Fourth, in existing high beam illumination lens modules, the inner and outer lenses are separate. The light emitted by the light source needs to pass through different media such as the inner lens, air, and outer lens, resulting in significant Fresnel loss and severe dispersion.

[0066] In view of this, embodiments of this application provide a high-beam lens. Figures 1 and 2 show side view schematic diagrams of two high-beam lenses provided in embodiments of this application, respectively. As shown in Figures 1 and 2, the high-beam lens is a one-piece molded structure, comprising a first curved surface 100, a first total reflection surface 200, and a second total reflection surface 320. The first total reflection surface 200 and the second total reflection surface 320 are disposed opposite to each other along a first direction Z. The first curved surface 100 is located on one side of the first total reflection surface 200 along a second direction X.

[0067] The first direction Z is perpendicular to the second direction X. The third direction Y is perpendicular to the first direction Z and also perpendicular to the second direction X. The first direction Z, the second direction X, and the third direction Y form a three-dimensional coordinate system. The plane formed by the second direction X and the third direction Y is a horizontal plane. The first direction Z is the longitudinal direction, which is the narrow longitudinal direction of the high beam pattern projected by the high beam lens. The third direction Y is the wide lateral direction of the high beam pattern projected by the high beam lens.

[0068] As shown in Figures 1 and 2, the first parallel light is incident on the first curved surface 100, and after being converged by the first curved surface 100, it is reflected by the first total reflection surface 200 and the second total reflection surface 320 in sequence. It converges along the first direction Z and then along the third direction Y, becoming the second parallel light. The second parallel light is emitted towards the second total reflection surface 320 along the second direction X on the side away from the first curved surface 100.

[0069] The first curved surface 100 is mainly used to converge the first parallel light incident from the first curved surface 100 along the first direction Z (i.e., longitudinal direction). The second total internal reflection surface 320 is mainly used to converge the light beam after the first parallel light incident from the first curved surface 100 is reflected by the first total internal reflection surface 200 along the third direction Y (i.e., transverse direction); the first total internal reflection surface 200 is mainly used to match the first curved surface 100 and the second total internal reflection surface 320, and also plays a partial converging role. The first total internal reflection surface 200 and the second total internal reflection surface 320 also play a role in folding the optical path.

[0070] Optionally, the first surface 100 can be a convex surface along the first direction Z (i.e., longitudinal direction) to facilitate the convergence of the first parallel light incident from the first surface 100 along the first direction Z (i.e., longitudinal direction).

[0071] Optionally, the first total reflection surface 200 can be a curved surface or a plane.

[0072] Optionally, the second total reflection surface 320 can be a concave surface along the third direction Y (i.e., transverse) to facilitate the convergence of the beam of light after the first parallel light incident from the first curved surface 100 is reflected by the first total reflection surface 200 along the third direction (i.e., transverse).

[0073] However, this application does not limit the shape of the first curved surface 100, the first total reflection surface 200, and the second total reflection surface 320, but it depends on the specific circumstances.

[0074] In practical applications, the first curved surface 100 is the light-emitting surface, which is the outermost transparent surface of the high beam lens. According to the principle of reversible light path, the incident light is incident on the second total reflection surface 320, and after being reflected by the second total reflection surface 320 and the first total reflection surface 200, it is emitted from the first curved surface 100 to form the high beam pattern.

[0075] Figure 3 shows a bottom view of the high-beam lens shown in Figure 1, and Figure 4 shows a top view of the high-beam lens shown in Figure 1. Combining Figures 1, 3, and 4, the ratio of the width of the first parallel light along the first direction Z to the width of the second parallel light along the first direction Z characterizes the degree of convergence of the high-beam lens on the parallel light incident from the first curved surface 100 along the first direction Z (i.e., longitudinal direction). The ratio of the width of the first parallel light along the third direction Y to the width of the second parallel light along the third direction Y characterizes the degree of convergence of the high-beam lens on the parallel light incident from the first curved surface 100 along the third direction Y (i.e., lateral direction). The ratio of the width of the first parallel light along the first direction Z to the width of the second parallel light along the first direction Z is greater than the ratio of the width of the first parallel light along the third direction Y to the width of the second parallel light along the third direction Y. This means that the high-beam lens has a greater longitudinal convergence degree on the parallel light incident from the first curved surface 100 than a lateral convergence degree, which is equivalent to longitudinal and lateral focusing separation, and the longitudinal focal length is greater than the lateral focal length.

[0076] Therefore, the high beam lens provided in this application embodiment has the following technical effects:

[0077] First, by using an integrally molded high beam lens, the vertical convergence degree is greater than the horizontal convergence degree, which is equivalent to horizontal and vertical focus separation, and the vertical focal length is greater than the horizontal focal length. This makes it easier to achieve a high beam pattern that is wide horizontally and narrow vertically. It also helps to narrow the opening size of the first curved surface 100, which is the light-emitting surface, along the first direction Z (i.e., the longitudinal direction). For example, the size of the first curved surface 100 along the first direction Z (i.e., the longitudinal direction) can be about 10mm.

[0078] Secondly, the one-piece high beam lens is a single-layer lens structure, which is equivalent to combining the outer lens and inner lens in the traditional solution into one, effectively reducing Fresnel loss. Moreover, by utilizing total internal reflection, the optical path can be folded and the size shortened. While improving light efficiency, the size and weight of the lens are reduced, which is conducive to energy saving and cost saving.

[0079] Third, the one-piece molded high beam lens has a single-layer lens structure, which has less refraction, resulting in less dispersion of the projected light and better color uniformity.

[0080] Fourth, the first curved surface 100 can be a complete free-form surface, and the first total reflection surface 200 can be a complete free-form surface or a plane, which makes the static appearance of the lens consistent and is conducive to meeting different shape requirements such as horizontal strip module shape.

[0081] Fifth, the one-piece molded high beam lens can also avoid the problem of multi-layer lenses being burned due to focusing sunlight.

[0082] Optionally, as shown in Figures 1 and 2, the first curved surface 100 has a first side 101 and a second side 102 arranged opposite to each other along a first direction Z. The first side 101 of the first curved surface 100 is connected to the first total reflection surface 200 through a first connecting surface S1, which extends along a second direction X. The second side 102 of the first curved surface 100 is connected to the second total reflection surface 320 through a second connecting surface S2, which also extends along a second direction X. In other words, the first curved surface 100 is connected to the first total reflection surface 200 and the second total reflection surface 320 respectively through a thick-walled structure between the first connecting surface S1 and the second connecting surface S2. This arrangement is more conducive to forming a high beam pattern that is wider laterally and narrower longitudinally, and the fact that the first curved surface 100 extends along the second direction X allows for greater freedom in the design of the high beam lens.

[0083] It is understandable that the lengths of the first connecting surface S1 and the second connecting surface S2 extending along the second direction X can be set according to requirements.

[0084] Alternatively, the first side 101 of the first curved surface 100 can be directly connected to the first total reflection surface 200, and the second side 102 of the first curved surface 100 can be directly connected to the second total reflection surface 320. This arrangement can shorten the path of the light beam in the lens and further improve the light efficiency.

[0085] Based on the first side 101 of the first curved surface 100 being connected to the first total internal reflection surface 200 via the first connecting surface S1, and the second side 102 of the first curved surface 100 being connected to the second total internal reflection surface 320 via the second connecting surface S2, optionally, as shown in Figure 1, the high beam lens has a Z-shaped structure. Alternatively, as shown in Figure 2, the high beam lens has an inverted Z-shaped structure. Regardless of whether the high beam lens has a Z-shaped or inverted Z-shaped structure, it can fold the optical path, shorten its size, effectively reduce Fresnel loss, and reduce the size and weight of the lens while improving light efficiency, which is beneficial for energy saving and cost reduction.

[0086] As previously known, the first curved surface 100 is the light-emitting surface. The first parallel light incident from the first curved surface 100 is first reflected by the first total internal reflection surface 200, and then reflected by the second total internal reflection surface 320, becoming the second parallel light. Therefore, the first total internal reflection surface 200 can also be the outer surface of the high-beam lens. The first curved surface 100 can be a complete freeform surface, and the first total internal reflection surface 200 can be a complete freeform surface or a plane, thus allowing for more freedom in the design of the lens's outer surface, good consistency in static appearance, and the ability to meet different styling requirements.

[0087] Alternatively, the high beam lens can be a transparent optical element made of PMMA (polymethyl methacrylate) or PC (polycarbonate).

[0088] Based on the same inventive concept, this application also provides a high beam lens module. Figure 5 shows a side view of a high beam lens module provided in this application embodiment, and Figure 6 shows a top-view oblique view of the high beam lens module shown in Figure 5. As shown in Figures 5 and 6, the high beam lens module includes a total internal reflection (TIR) ​​lens unit HB1 and a high beam lens unit HB2.

[0089] As shown in Figures 5 and 6, the high beam total internal reflection lens unit HB1 includes a first light-incident surface 421 and a first reflective bowl surface 422. The first light-incident surface 421 is the surface of the high beam total internal reflection lens unit HB1 that is away from the high beam lens unit HB2. The first reflective bowl surface 422 is deflected toward the high beam lens unit HB2 relative to the first light-incident surface 421.

[0090] As shown in Figures 5 and 6, the high beam lens unit HB2 is the high beam lens provided in any of the aforementioned embodiments.

[0091] Referring to Figures 5 and 6, the light emitted by the external light source 500 is incident through the first light-incident surface 421, converges through the first light-incident surface 421 to the first reflective bowl surface 422, and after being reflected by the first reflective bowl surface 422, it becomes a central parallel light. The central parallel light is then reflected sequentially by the second total reflection surface 320 and the first total reflection surface 200, and finally emitted from the first curved surface 100 to form a high beam pattern.

[0092] The first incident light surface 421 mainly functions to collect and focus light. The first reflective bowl surface 422 is a total internal reflection freeform surface, which mainly functions to collect and focus light and form a parallel beam in the middle. Furthermore, the high beam total internal reflection lens unit HB1 and the high beam lens unit HB2 are matched and coupled to each other so as to ultimately project a high beam pattern with sufficient light intensity and a wide lateral and narrow longitudinal beam.

[0093] It should be noted that in this application, the light rays in the first parallel light, the second parallel light, and the intermediate parallel light are parallel and / or approximately parallel to each other, that is, they are roughly parallel. Furthermore, the light emitted from the external light source 500 is incident on the first light-incident surface 421, converges at the first reflective surface 422, and after reflection by the first reflective surface 422, forms the intermediate parallel light. The intermediate parallel light is then reflected sequentially by the second total internal reflection surface 320 and the first total internal reflection surface 200, resulting in a higher beam pattern with a better parallel effect compared to the intermediate parallel light.

[0094] Optionally, the first light-incident surface 421 is saddle-shaped. Specifically, as shown in Figure 5, the first light-incident surface 421 is convex when viewed from the side. As shown in Figure 6, the first light-incident surface 421 is concave when viewed from a top angle. With this configuration, the first light-incident surface 421 can converge the light emitted from the light source 500, reducing the beam size incident on the first reflective surface 422. This reduces the area of ​​the first reflective surface 422, thereby improving light efficiency, weakening dispersion, and also helping to reduce the volume of the high-beam total internal reflection lens unit HB1, thus reducing the overall volume of the high-beam lens module.

[0095] Optionally, as shown in Figures 5 and 6, the high beam total internal reflection lens unit HB1 and the high beam lens unit HB2 are integrally formed. In this way, the high beam total internal reflection lens unit HB1 and the high beam lens unit HB2 are combined into an integral lens, which can further shorten the dimension chain and further reduce Fresnel loss, thereby improving optical efficiency.

[0096] Specifically, as shown in Figures 5 and 6, the first total internal reflection surface 200 and the first reflective bowl surface 422 can be directly connected or connected through a connecting surface, and the second total internal reflection surface 320 and the first incident light surface 421 can be connected through a connecting surface. Thus, the light emitted from the external light source 500, after entering through the first incident light surface 421, is transmitted within the integrally formed lens, and sequentially undergoes reflection by the first reflective bowl surface 422, the second total internal reflection surface 320, and the first total internal reflection surface 200 before finally exiting through the first curved surface 100. This results in a short optical path, low Fresnel loss, and high optical efficiency.

[0097] Alternatively, the high beam total internal reflection lens unit HB1 and the high beam lens unit HB2 can also be separate structures, depending on the specific circumstances.

[0098] To better understand this application, Figure 7 shows a side view schematic diagram of the light tracing of a high beam lens module provided in an embodiment of this application, and Figure 8 shows a top view schematic diagram of the light tracing of a high beam lens module provided in an embodiment of this application. It can be seen that the light emitted from the external light source 500 is incident through the first light-incident surface 421, converges to the first reflective surface 422, is reflected by the first reflective surface 422, and then sequentially reflected by the second total reflection surface 320 and the first total reflection surface 200, finally exiting through the first curved surface 100 to form the high beam pattern.

[0099] Optionally, as shown in Figures 9a and 9b, Figure 9a shows a bottom view of a high beam lens module provided in an embodiment of this application, and Figure 9b shows a top view of a high beam lens module provided in an embodiment of this application. It can be seen that in the high beam lens module, there can be at least two high beam total internal reflection lens units HB1. Each high beam total internal reflection lens unit HB1 is arranged side-by-side along the third direction Y, and each high beam total internal reflection lens unit HB1 corresponds to the same high beam lens unit HB2. That is, each high beam total internal reflection lens unit HB1 corresponds to the same second total reflection surface 320, the first total reflection surface 200, and the first curved surface 100. In other words, the light emitted from the external light source 500 forms intermediate parallel light after passing through its corresponding high beam total internal reflection lens unit HB1, and is then reflected by the same second total reflection surface 320 and the same first total reflection surface 200, and uniformly exits from the first curved surface 100.

[0100] It is understandable that there are at least two total internal reflection lens units HB1 for high beams, and each total internal reflection lens unit HB1 for high beams is arranged in parallel along the third direction Y, which is beneficial for expanding the emitted light pattern along the third direction Y (i.e., laterally).

[0101] It should be noted that when there are at least two high beam total internal reflection lens units HB1, each high beam total internal reflection lens unit HB1 can be a one-piece molded structure, and each high beam total internal reflection lens unit HB1 can also be a one-piece molded structure with the high beam lens unit HB2.

[0102] Alternatively, as shown in Figure 6, the high beam total internal reflection lens unit HB1 in the high beam lens module can also be a single unit, depending on the specific circumstances.

[0103] It should be noted that in the high beam lens module provided in this application embodiment, the high beam lens unit HB2 can be a Z-shaped structure or an inverted Z-shaped structure. The high beam lens module shown in Figure 5 is illustrated with the high beam lens unit HB2 having a Z-shaped structure as an example. The high beam lens module including the high beam lens unit HB2 with an inverted Z-shaped structure can be adaptively adjusted, which will not be described in detail here.

[0104] Accordingly, this application also provides a high beam / low beam lens assembly. Figures 10, 11, and 12 show three oblique side views of a high beam / low beam lens assembly provided in this application embodiment, Figure 13 shows a bottom view of a high beam / low beam lens assembly provided in this application embodiment, Figure 14 shows a top view of a high beam / low beam lens assembly provided in this application embodiment, and Figure 15 shows a structural schematic diagram of a high beam / low beam lens assembly provided in this application embodiment from a front side view. As shown in Figures 10-15, the high beam / low beam lens assembly includes a high beam lens module HB and a low beam lens module LB, wherein the low beam lens module LB is used to form a low beam pattern; the high beam lens module HB is used to form a high beam pattern, and the high beam lens module HB is the high beam lens module provided in any of the aforementioned embodiments.

[0105] As shown in Figures 10-15, the low beam lens module LB includes a low beam elbow lens unit Kink and a low beam broadening lens unit Flat. The low beam elbow lens unit Kink is used to form the low beam elbow cutoff line pattern, and the low beam broadening lens unit Flat is used to form the low beam broadening pattern. The low beam elbow cutoff line pattern and the low beam broadening pattern are combined to form the low beam pattern.

[0106] Optionally, Figure 16 shows a side view of a near-beam elbow lens unit Kink provided in an embodiment of this application. As shown in Figures 10-16, the near-beam elbow lens unit Kink includes a near-beam elbow total internal reflection (TIR) ​​lens unit Kink1 and a near-beam elbow focusing lens structure Kink2.

[0107] Figures 17 and 18 show side views of the two near-beam elbow focusing lens structures Kink2 provided in the embodiments of this application, and Figure 19 shows a bottom view of the near-beam elbow focusing lens structure Kink2 shown in Figure 17. As shown in Figures 10-19, the near-beam elbow focusing lens structure Kink2 and the high-beam lens unit HB2 are integrally formed. The near-beam elbow focusing lens structure Kink2 and the high-beam lens unit HB2 share the first curved surface 100 and the first total reflection surface 200. The near-beam elbow focusing lens structure Kink2 also includes a third total reflection surface 311. The third total reflection surface 311 and the first total reflection surface 200 are arranged opposite each other along the first direction Z, and the third total reflection surface 311 and the second total reflection surface 320 are arranged side by side along the third direction Y.

[0108] As shown in Figures 17-19, a beam of parallel light is incident from the first curved surface 100, converges after passing through the first curved surface 100, and is then reflected sequentially by the first total internal reflection surface 200 and the third total internal reflection surface 311, focusing at the first focal point F. The first focal point F is located on the side of the third total internal reflection surface 311 facing away from the first curved surface 100 along the second direction X. The distance L between the geometric center of the first curved surface 100 and the first focal point F along the second direction X is greater than the distance l between the geometric center of the third total internal reflection surface 311 and the first focal point F along the second direction X. The distance L between the geometric center of the first curved surface 100 and the first focal point F along the second direction X is the longitudinal focal length, and the distance l between the geometric center of the third total internal reflection surface 311 and the first focal point F along the second direction X is the lateral focal length, that is, the longitudinal focal length is greater than the lateral focal length.

[0109] Similar to the high beam lens unit HB2, in the near beam elbow focusing lens structure Kink2, the first curved surface 100 is mainly used to focus the parallel light incident from the first curved surface 100 along the first direction Z (i.e., longitudinal direction); the third total reflection surface 311 is mainly used to focus the beam of parallel light incident from the first curved surface 100 after reflection by the first total reflection surface 200 along the third direction Y (i.e., lateral direction); the first total reflection surface 200 is mainly used to match the first curved surface 100 and the third total reflection surface 311, and also plays a partial focusing role; the first total reflection surface 200 and the third total reflection surface 311 also play a role in folding the optical path.

[0110] Optionally, the third total reflection surface 311 can be a concave surface along the third direction Y (i.e., lateral direction) to facilitate focusing of the beam of parallel light incident from the first curved surface 100 after reflection by the first total reflection surface 200 along the third direction Y (i.e., lateral direction).

[0111] The near-light elbow focusing lens structure Kink2 provided in this application embodiment has the following technical effects:

[0112] First, by using an integrally formed focusing lens structure, horizontal and vertical focusing separation is achieved, and the vertical focal length is greater than the horizontal focal length, which makes it easier to achieve a near-light elbow cutoff line light pattern that is wide horizontally and narrow vertically. It also helps to narrow the opening size of the first curved surface 100, which is the light-emitting surface, along the first direction Z (i.e., the longitudinal direction). For example, the size of the first curved surface 100 along the first direction Z (i.e., the longitudinal direction) can be about 10mm.

[0113] Second, the integrated focusing lens is a single-layer lens structure, which is equivalent to combining the outer and inner lenses in the traditional solution into one, effectively reducing Fresnel loss. Moreover, by utilizing total internal reflection, the optical path can be folded and the size shortened. While improving light efficiency, the size and weight of the lens are reduced, which is beneficial for energy saving and cost reduction.

[0114] Third, the one-piece molded focusing lens has a single-layer lens structure, which reduces refraction, resulting in less dispersion of the projected light and better color uniformity.

[0115] Fourth, the first curved surface 100 can be a complete free-form surface, and the first total reflection surface 200 can be a complete free-form surface or a plane, which makes the static appearance of the lens consistent and is conducive to meeting different shape requirements such as horizontal strip module shape.

[0116] Fifth, the one-piece molding of the focusing lens can also avoid the problem of multi-layer lenses being burned when focusing sunlight.

[0117] Optionally, as shown in Figure 17, the near-beam elbow focusing lens structure Kink2 has a Z-shaped structure; alternatively, as shown in Figure 18, the near-beam elbow focusing lens structure Kink2 has an inverted Z-shaped structure.

[0118] Alternatively, the near-light elbow focusing lens structure Kink2 can be a transparent optical element made of PMMA (polymethyl methacrylate) or PC (polycarbonate).

[0119] It is understandable that, since the near-beam elbow focusing lens structure Kink2 and the high-beam lens unit HB2 are integrally molded, they share the first curved surface 100 and the first total reflection surface 200. Therefore, when the first side 101 of the first curved surface 100 is connected to the first total reflection surface 200 through the first connecting surface S1, and the second side 102 of the first curved surface 100 is connected to the second total reflection surface 320 through the second connecting surface S2, the second side 102 of the first curved surface 100 is also connected to the third total reflection surface 311 through the second connecting surface S2. This also facilitates the formation of a near-beam elbow cutoff line with a wide lateral direction and a narrow longitudinal direction, and allows for more freedom in lens appearance design. When the first side 101 of the first curved surface 100 is directly connected to the first total reflection surface 200, and the second side 102 of the first curved surface 100 is directly connected to the second total reflection surface 320, the second side 102 of the first curved surface 100 is also directly connected to the third total reflection surface 311. This can shorten the path of the light beam in the lens and further improve the light efficiency.

[0120] As shown in Figures 10-16, the near-light elbow total internal reflection lens structure Kink1 includes a second light-incident surface 411 and a second reflective cup surface 412. The second light-incident surface 411 is the surface of the near-light elbow total internal reflection lens structure Kink1 that is away from the near-light elbow focusing lens structure Kink2. The second reflective cup surface 412 is deflected toward the near-light elbow focusing lens structure Kink2 relative to the second light-incident surface 411. The first focal point F is located on the first edge 601 of the second reflective cup surface 412 near the second light-incident surface 411.

[0121] Referring to Figures 10-16, the light emitted by the external light source 500 is incident through the second light-incident surface 411, converges through the second light-incident surface 411 to the second reflective surface 412, is reflected by the second reflective surface 412, and then is reflected by the third total reflection surface 311 and the first total reflection surface 200 in sequence, and finally exits through the first curved surface 100. The shape of the second reflective surface 412 is projected as a near-beam elbow-shaped cutoff line light pattern, and the edge of the second reflective surface 412 near the second light-incident surface 411 is projected as the cutoff line of the near-beam elbow-shaped cutoff line light pattern.

[0122] Among them, the second light-incident surface 411 mainly plays the role of collecting and focusing light; the second reflective bowl surface 412 is a total internal reflection freeform surface, which mainly plays the role of collecting and focusing light and forming a near-beam elbow-shaped cutoff line light pattern.

[0123] Optionally, as shown in Figures 10-16, the near-light elbow-shaped total internal reflection lens structure Kink1 and the near-light elbow-shaped focusing lens structure Kink2 are integrally molded structures, which can further shorten the dimension chain and further reduce Fresnel loss, thereby improving optical efficiency.

[0124] Furthermore, as previously known, the high beam lens unit HB2 and the high beam total internal reflection lens unit HB1 can also be integrally formed. Thus, the high beam lens module HB, composed of the high beam lens unit HB2 and the high beam total internal reflection lens unit HB1, and the low beam elbow lens unit Kink, composed of the low beam elbow lens structure Kink1 and the low beam elbow focusing lens structure Kink2, can be integrated into a single lens structure, which is beneficial for reducing the size of the high and low beam lens assemblies.

[0125] It is understandable that, as shown in Figures 10-15, the first light-incident surface 421 and the second light-incident surface 411 are arranged side by side along the third direction Y, and the first reflective surface 422 and the second reflective surface 412 are arranged side by side along the third direction Y.

[0126] Alternatively, the near-beam elbow total internal reflection lens structure Kink1 and the near-beam elbow focusing lens structure Kink2 can also be separate structures, depending on the specific circumstances.

[0127] Optionally, Figure 20 shows a side view of a near-beam broadening lens unit Flat provided in an embodiment of this application. As shown in Figures 10-15 and Figure 20, the near-beam broadening lens unit Flat includes a near-beam broadening total internal reflection (TIR) ​​lens unit Flat1 and a near-beam broadening focal line lens structure Flat2.

[0128] Figures 21 and 22 show side views of the two near-beam widening focal length lens structures Flat2 provided in the embodiments of this application, and Figure 23 shows a bottom view of the near-beam widening focal length lens structure Flat2 shown in Figure 21. As shown in Figures 21-23, the near-beam widening focal length lens structure Flat2 and the high-beam lens unit HB2 are integrally formed. The near-beam widening focal length lens structure Flat2 and the high-beam lens unit HB2 share the first curved surface 100 and the first total reflection surface 200. The near-beam widening focal length lens structure Flat2 also includes a fourth total reflection surface 312. The fourth total reflection surface 312 and the first total reflection surface 200 are arranged opposite each other along the first direction Z, and the fourth total reflection surface 312 and the second total reflection surface 320 are arranged side-by-side along the third direction Y.

[0129] As shown in Figures 21-23, a beam of parallel light is incident from the first curved surface 100, converges after passing through the first curved surface 100, and is then reflected sequentially by the first total reflection surface 200 and the fourth total reflection surface 312. The beam converges along the first direction Z and is parallel along the third direction Y, converging on the first focal line FF. The first focal line FF is located on the side of the fourth total reflection surface 312 away from the first curved surface 100 along the second direction X, and the first focal line FF extends along the third direction Y.

[0130] In the near-light broadening focal length lens structure Flat2, the first curved surface 100 is mainly used to focus the parallel light incident from the first curved surface 100 along the first direction Z (i.e., longitudinal direction). The first total internal reflection surface 200 and the fourth total internal reflection surface 312 are used to match the first curved surface 100 and also play a role in partial focusing and folding the optical path. In other words, the near-light broadening focal length lens structure Flat2 mainly achieves longitudinal focusing of the parallel light incident from the first curved surface 100.

[0131] Optionally, the fourth total reflection surface 312 can be a curved surface or a plane.

[0132] In practical applications, as shown in Figures 10-15 and 20, the light emitted by the external light source 500 first passes through the near-light broadening total internal reflection lens structure Flat1, and then enters the near-light broadening focal line lens structure Flat2. Therefore, focusing along the third direction Y (i.e., the horizontal direction) can be achieved by the near-light broadening total internal reflection lens structure, thus achieving horizontal and vertical focusing separation, and the vertical focal length is greater than the horizontal focal length.

[0133] The Flat2 near-light broadening focal length lens structure provided in this application has the following technical effects:

[0134] First, by using an integrally formed focal line lens structure, longitudinal focusing is achieved as a single focal line, while lateral focusing can be achieved separately through a near-light broadening total internal reflection lens structure. This achieves separation of longitudinal and lateral focusing, with the longitudinal focusing being greater than the lateral focal length. This facilitates the realization of a near-light broadening beam pattern that is wider laterally and narrower longitudinally. It also helps to narrow the opening size of the first curved surface 100, which serves as the light-emitting surface, along the first direction Z (i.e., longitudinal direction). For example, the size of the first curved surface 100 along the first direction Z (i.e., longitudinal direction) can be about 10mm.

[0135] Secondly, the integrally formed focal line lens is a single-layer lens structure, which is equivalent to combining the outer lens and inner lens in the traditional solution into one, effectively reducing Fresnel loss. Moreover, by utilizing total internal reflection, the optical path can be folded and the size shortened. While improving light efficiency, the size and weight of the lens are reduced, which is beneficial for energy saving and cost reduction.

[0136] Third, the one-piece focal line lens has a single-layer lens structure, which has less refraction, resulting in less dispersion of the projected light and better color uniformity.

[0137] Fourth, the first curved surface 100 can be a complete free-form surface, and the first total reflection surface 200 can be a complete free-form surface or a plane, which makes the static appearance of the lens consistent and is conducive to meeting different shape requirements such as horizontal strip module shape.

[0138] Fifth, the one-piece molded focal length lens can also avoid the problem of multi-layered lenses being burned due to focusing sunlight.

[0139] Optionally, as shown in Figure 21, the near-beam widening focal length lens structure Flat2 has a Z-shaped structure; alternatively, as shown in Figure 22, the near-beam widening focal length lens structure Flat2 has an inverted Z-shaped structure.

[0140] Optionally, the near-beam broadening focal line lens structure Flat2 can be a transparent optical element made of PMMA (polymethyl methacrylate) or PC (polycarbonate).

[0141] It is understandable that, since the near-beam widening focal length lens structure Flat2 and the high-beam lens unit HB2 are integrally formed, and the near-beam widening focal length lens structure Flat2 and the high-beam lens unit HB2 share the first curved surface 100 and the first total reflection surface 200, when the first side 101 of the first curved surface 100 is connected to the first total reflection surface 200 through the first connecting surface S1, and the second side 102 of the first curved surface 100 is connected to the second total reflection surface 320 through the second connecting surface S2, the second side 101 of the first curved surface 100... 02 is also connected to the fourth total reflection surface 312 through the second connecting surface S2. This is also conducive to forming a wide horizontal and narrow vertical near beam pattern, and the lens appearance design is more flexible. When the first side 101 of the first curved surface 100 is directly connected to the first total reflection surface 200, and the second side 102 of the first curved surface 100 is directly connected to the second total reflection surface 320, the second side 102 of the first curved surface 100 is also directly connected to the fourth total reflection surface 312. This can shorten the path of the beam in the lens and further improve the light efficiency.

[0142] As shown in Figures 10-15 and 20, the near-beam broadening total internal reflection lens structure Flat1 includes a third light-incident surface 413 and a third reflective cup surface 414. The third light-incident surface 413 is the surface of the near-beam broadening total internal reflection lens structure Flat1 that is away from the near-beam broadening focal line lens structure Flat2. The third reflective cup surface 414 is deflected toward the near-beam broadening focal line lens structure Flat2 relative to the third light-incident surface 413. The first focal line FF is located on the second edge 602 of the third reflective cup surface 414 near the third light-incident surface 413.

[0143] Referring to Figures 10-15 and Figure 20, the light emitted by the external light source 500 is incident through the third light-incident surface 413, converges through the third light-incident surface 413 to the third reflective surface 414, is reflected by the third reflective surface 414, and then is reflected by the fourth total reflection surface 312 and the first total reflection surface 200 in sequence, and finally exits through the first curved surface 100. The shape of the third reflective surface 414 is projected as a near-beam broadening light pattern, and the edge of the third reflective surface 414 near the third light-incident surface 413 is projected as the cutoff line of the near-beam broadening light pattern.

[0144] Among them, the third light-incident surface 413 mainly plays the role of collecting and focusing light; the third reflective bowl surface 414 is a total internal reflection freeform surface, which mainly plays the role of collecting and focusing light and forming a near-beam broadening light pattern.

[0145] As previously known, the Flat2 near-beam broadening focal length lens structure is mainly used to achieve longitudinal focusing, while the Flat1 near-beam broadening total internal reflection lens structure is mainly used to achieve lateral focusing. This achieves separation of longitudinal and lateral focusing, and the longitudinal focusing is greater than the lateral focal length, which facilitates the realization of a near-beam broadening beam pattern that is wide laterally and narrow longitudinally.

[0146] Optionally, as shown in Figures 10-15 and 16, the near-light broadening total internal reflection lens structure Flat1 and the near-light broadening focal line lens structure Flat2 are integrally formed structures, which can further shorten the dimension chain and further reduce Fresnel loss, thereby improving optical efficiency.

[0147] Furthermore, as previously known, the high beam lens unit HB2 and the high beam total internal reflection lens unit HB1 can also be integrally formed. Thus, as shown in Figures 10-15, the high beam lens module HB composed of the high beam lens unit HB2 and the high beam total internal reflection lens unit HB1, and the low beam broadening lens unit Flat composed of the low beam broadening total internal reflection lens structure Flat1 and the low beam broadening focal line lens structure Flat2 can be integrally formed as a lens structure, which is beneficial to reduce the volume of the high and low beam lens assemblies.

[0148] It is understandable that, as shown in Figures 10-15, the first light-incident surface 421 and the third light-incident surface 413 are arranged side by side along the third direction Y, and the first reflective surface 422 and the third reflective surface 414 are arranged side by side along the third direction Y.

[0149] Furthermore, the high-beam lens module HB, composed of the high-beam lens unit HB2 and the high-beam total internal reflection lens unit HB1, the low-beam elbow lens unit Kink, composed of the low-beam elbow focusing lens structure Kink1 and the low-beam elbow focusing lens structure Kink2, and the low-beam broadening lens unit Flat, composed of the low-beam broadening total internal reflection lens structure Flat1 and the low-beam broadening focal line lens structure Flat2, can be integrated into a single lens structure, which helps to reduce the size of the high and low beam lens assemblies. Thus, as shown in Figures 10-15, the first light-incident surface 421, the second light-incident surface 411, and the third light-incident surface 413 are arranged side by side along the third direction Y, and the first reflective cup surface 422, the second reflective cup surface 412, and the third reflective cup surface 414 are arranged side by side along the third direction Y. Among them, the second light-incident surface 411 and the third light-incident surface 413 can be the same light-incident surface.

[0150] Alternatively, the near-beam broadening total internal reflection lens structure Flat1 and the near-beam broadening focal line lens structure Flat2 can also be separate structures, depending on the specific circumstances.

[0151] Optionally, as shown in Figures 10-15, in the near beam widening lens unit Flat, there are two near beam widening total internal reflection lens structures Flat1. These two near beam widening total internal reflection lens structures Flat1 are arranged side by side along the third direction Y, and are symmetrically arranged along the second direction X. These two near beam widening total internal reflection lens structures Flat1 correspond to the same near beam widening focal line lens structure Flat2, that is, these two near beam widening total internal reflection lens structures Flat1 correspond to the same fourth total reflection surface 312, first total reflection surface 200 and first curved surface 100.

[0152] With this configuration, the light rays emitted from the two near-beam broadening total internal reflection lens structures Flat1 are distributed in a cross-sectional manner along the third direction Y. That is, along the third direction Y, the light rays emitted from the left-hand near-beam broadening total internal reflection lens structure Flat1 are distributed in the right half, and the light rays emitted from the right-hand near-beam broadening total internal reflection lens structure Flat1 are distributed in the left half, which is beneficial for expanding the emitted light pattern along the third direction Y (i.e., laterally).

[0153] It should be noted that the two near-beam widening total internal reflection lens structures Flat1 can be integrally molded, and both of these near-beam widening total internal reflection lens structures Flat1 can also be integrally molded with the near-beam widening focal line lens structure Flat2.

[0154] Alternatively, in the low beam broadening lens unit Flat, the low beam broadening total internal reflection lens structure Flat1 can also be one, and by adjusting the shape of the third reflection bowl 414, the emitted low beam broadening pattern can also be achieved.

[0155] It should be noted that, as shown in Figures 10-15, the high beam and low beam lens assembly provided in this application embodiment may include one or more high beam lens modules HB, or one or more low beam lens modules LB. The low beam lens module LB may include one or more low beam elbow lens units Kink, or one or more low beam widening lens units Flat, depending on the specific situation. As shown in Figures 10-15, the high beam and low beam lens assembly includes two high beam lens modules HB and one low beam lens module LB. The low beam lens module LB includes three low beam elbow lens units Kink and one low beam widening lens unit Flat.

[0156] Accordingly, this application also provides a lighting module. Referring to Figures 10-15, the lighting module includes a light source module and a high / low beam lens assembly. The light source module includes multiple light sources 500. The high / low beam lens assembly is the high / low beam lens assembly provided in any of the above embodiments. The light sources 500 are disposed on the light-incident surfaces of the high / low beam lens assembly, such as the first light-incident surface 421, the second light-incident surface 411, and the third light-incident surface 413. Thus, the light emitted by the light sources 500 passes through the high / low beam lens assembly and emits a low beam pattern and / or a high beam pattern.

[0157] Since the high and low beam lens assemblies have been described in detail in the foregoing embodiments, they will not be repeated here.

[0158] The various parts of this manual are described in a combination of parallel and progressive methods. Each part focuses on the differences between the other parts, and the same or similar parts can be referred to each other.

[0159] The features described above regarding the disclosed embodiments can be substituted or combined with each other to enable those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-beam lens, characterized in that, The high beam lens is a one-piece molded structure, comprising a first curved surface, a first total reflection surface, and a second total reflection surface. The first and second total reflection surfaces are arranged opposite to each other along a first direction. The first curved surface is located on one side of the first total reflection surface along a second direction, and the first and second directions are perpendicular. When the first parallel light is incident on the first curved surface, it converges on the first curved surface, and then is reflected sequentially by the first total internal reflection surface and the second total internal reflection surface. It converges along the first direction and then along a third direction, becoming the second parallel light. The second parallel light exits towards the second total internal reflection surface along the second direction on the side opposite to the first curved surface. The third direction is perpendicular to both the first and second directions. The ratio of the width of the first parallel light along the first direction to the width of the second parallel light along the first direction is greater than the ratio of the width of the first parallel light along the third direction to the width of the second parallel light along the third direction.

2. The high-beam lens according to claim 1, characterized in that, The first curved surface has a first side and a second side that are arranged opposite to each other along the first direction; The first edge of the first curved surface is connected to the first total reflection surface through a first connecting surface, and the first connecting surface extends along the second direction; The second side of the first curved surface is connected to the second total reflection surface through a second connecting surface, and the second connecting surface extends along the second direction.

3. The high-beam lens according to claim 2, characterized in that, The high beam lens has a Z-shaped structure or an inverted Z-shaped structure.

4. The high-beam lens according to claim 1, characterized in that, The first curved surface has a first side and a second side arranged opposite to each other along the first direction. The first side is directly connected to the first total reflection surface, and the second side is directly connected to the second total reflection surface.

5. The high-beam lens according to any one of claims 1 to 4, characterized in that, The first surface is a complete freeform surface.

6. The high-beam lens according to any one of claims 1 to 5, characterized in that, The first total reflection surface is a complete freeform surface or plane.

7. The high-beam lens according to any one of claims 1 to 6, characterized in that, The high beam lens is made of polymethyl methacrylate and polycarbonate.

8. A high-beam lens module, characterized in that, The high beam lens module includes a high beam total internal reflection lens unit and a high beam lens unit; The high beam total internal reflection lens unit includes a first light-incident surface and a first reflective cup surface. The first light-incident surface is the surface of the high beam total internal reflection lens unit that is away from the high beam lens unit. The first reflective cup surface is deflected relative to the first light-incident surface of the high beam lens unit. The high beam lens unit is the high beam lens according to any one of claims 1-5, wherein When light emitted from an external light source is incident on the first light-incident surface, it converges to the first reflective surface. After being reflected by the first reflective surface, it becomes intermediate parallel light. The intermediate parallel light is then reflected by the second total reflection surface and the first total reflection surface in sequence, and finally emitted from the first curved surface to form a high beam pattern.

9. The high-beam lens module according to claim 8, characterized in that, The first incident light surface is saddle-shaped.

10. The high-beam lens module according to claim 8 or 9, characterized in that, The high beam total internal reflection lens unit and the high beam lens unit are integrally formed.

11. The high-beam lens module according to claim 8 or 9, characterized in that, The high beam total internal reflection lens unit and the high beam lens unit are separate structures.

12. The high-beam lens module according to any one of claims 8 to 11, characterized in that, There are at least two total internal reflection lens units for high beams, and each of the total internal reflection lens units for high beams is arranged side by side along the third direction; Each of the aforementioned high beam total internal reflection lens units corresponds to the same high beam lens unit.

13. A high / low beam lens assembly, characterized in that, The high beam and low beam lens assembly includes a high beam lens module and a low beam lens module; The low beam lens module is used to form a low beam pattern. The low beam lens module includes a low beam elbow lens unit and a low beam broadening lens unit. The low beam elbow lens unit is used to form a low beam elbow cutoff line pattern, and the low beam broadening lens unit is used to form a low beam broadening pattern. The low beam elbow cutoff line pattern and the low beam broadening pattern are combined to form a low beam pattern. The high beam lens module is used to form a high beam pattern, and the high beam lens module is the high beam lens module according to any one of claims 8-12.

14. The high / low beam lens assembly according to claim 13, characterized in that, The near-light elbow lens unit includes a near-light elbow total internal reflection lens structure and a near-light elbow focusing lens structure; The near-beam elbow-shaped focusing lens structure and the far-beam lens unit are integrally formed. The near-beam elbow-shaped focusing lens structure and the far-beam lens unit share the first curved surface and the first total reflection surface. The near-beam elbow-shaped focusing lens structure also includes a third total reflection surface. The third total reflection surface and the first total reflection surface are arranged opposite each other along the first direction, and the third total reflection surface and the second total reflection surface are arranged side-by-side along the third direction. When a beam of parallel light is incident on the first curved surface, it is converged by the first curved surface and then reflected sequentially by the first total internal reflection surface and the third total internal reflection surface, focusing at the first focal point; the distance between the geometric center of the first curved surface and the first focal point along the second direction is greater than the distance between the geometric center of the second total internal reflection surface and the first focal point along the second direction. The near-light elbow-shaped total internal reflection lens structure includes a second incident surface and a second reflecting cup surface. The second incident surface is the surface of the near-light elbow-shaped total internal reflection lens structure that faces away from the near-light elbow-shaped focusing lens structure. The second reflecting cup surface is deflected relative to the second incident surface onto the near-light elbow-shaped focusing lens structure. The first focal point is located on a first edge of the second reflecting cup surface near the second incident surface. When light emitted from an external light source is incident on the second incident surface, it is converged to the second reflective bowl surface. After being reflected by the second reflective bowl surface, it is reflected by the third total reflection surface and the first total reflection surface in sequence, and finally exits from the first curved surface. The shape of the second reflective bowl surface is projected as a near-beam elbow cutoff line light pattern, and the first edge of the second reflective bowl surface near the second incident surface is projected as the cutoff line of the near-beam elbow cutoff line light pattern.

15. The high / low beam lens assembly according to claim 14, characterized in that, The near-light elbow-shaped total internal reflection lens structure and the near-light elbow-shaped focusing lens structure are integrally formed structures, wherein... The first light-incident surface and the second light-incident surface are arranged side by side along the third direction, and the first reflective surface and the second reflective surface are arranged side by side along the third direction.

16. The high / low beam lens assembly according to any one of claims 13 to 15, characterized in that, The near-light broadening lens unit includes a near-light broadening total internal reflection lens structure and a near-light broadening focal line lens structure. The near-beam broadening focal length lens structure and the far-beam lens unit are integrally formed. The near-beam broadening focal length lens structure and the far-beam lens unit share the first curved surface and the first total reflection surface. The near-beam broadening focal length lens structure further includes a fourth total reflection surface. The fourth total reflection surface and the first total reflection surface are arranged opposite each other along the first direction, and the fourth total reflection surface and the second total reflection surface are arranged side-by-side along the third direction. When a beam of parallel light is incident on the first curved surface, it is converged by the first curved surface, and then reflected by the first total reflection surface and the fourth total reflection surface in sequence. It converges along the first direction and is parallel to the third direction, converging on the first focal line. The near-light broadening total internal reflection lens structure includes a third incident surface and a third reflecting cup surface. The third incident surface is the surface of the near-light broadening total internal reflection lens structure that faces away from the near-light broadening focal line lens structure. The third reflecting cup surface is deflected relative to the third incident surface towards the near-light broadening focal line lens structure. The first focal line is located on the second edge of the third reflecting cup surface near the third incident surface. When light emitted from an external light source is incident on the third incident surface, it is converged to the third reflective surface. After being reflected by the third reflective surface, it is reflected by the fourth total reflection surface and the first total reflection surface in sequence, and finally exits from the first curved surface. The shape of the third reflective surface is projected as a near-beam broadening pattern, and the second edge of the third reflective surface near the third incident surface is projected as the cutoff line of the near-beam broadening pattern.

17. The high / low beam lens assembly according to claim 16, characterized in that, The near-light broadening total internal reflection lens structure and the near-light broadening focal line lens structure are integrally formed structures; The first light-incident surface and the third light-incident surface are arranged side by side along the third direction, and the first reflective surface and the third reflective surface are arranged side by side along the third direction.

18. The high / low beam lens assembly according to claim 16 or 17, characterized in that, The near beam widening total internal reflection lens structure consists of two structures, which are arranged side by side adjacent to each other along the third direction, and are also arranged symmetrically along the second direction. The two near-beam broadening total internal reflection lens structures correspond to the same near-beam broadening focal line lens structure.

19. The high / low beam lens assembly according to any one of claims 16 to 18, characterized in that, The third total reflection surface is a concave surface along the third direction.

20. A lighting module, characterized in that, It includes a light source module and a high / low beam lens assembly, wherein the light source module includes multiple light sources, and the high / low beam lens assembly is the high / low beam lens assembly as described in any one of claims 13-18.

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