Vehicle lamp optical element, vehicle lamp module and vehicle

Abstract

A vehicle lamp optical element, a vehicle lamp module and a vehicle, which belong to the technical field of vehicle lamps. The vehicle lamp optical element comprises one or more optical units (100). The front end of each optical unit (100) is provided with a light emitting surface (1), and the rear end thereof is provided with a light receiving structure (2), the light receiving structure (2) comprising a light incident surface and a reflective surface. The light receiving structure (2) is configured to cause incident light from the light incident surface to be reflected by the reflective surface so as to form an intermediate light image at a focal plane of the light emitting surface (1). The light emitting surface (1) is configured to image the intermediate light image in front of the vehicle lamp optical element. Thus, the present application can reduce the size of the vehicle lamp optical element, and achieves a vehicle lamp lighting function in the mode of a simple structure, high efficiency and small size, thus reducing the manufacturing cost and improving the manufacturing and assembling precision of the vehicle lamp module; moreover, the smaller size of the vehicle lamp optical element achieves higher freedom in whole lamp model design, thereby reducing the difficulty of whole lamp structure design while presenting an attractive appearance.

Description

Headlight optical element, headlight module and vehicle Technical Field

[0001] The present application relates to the field of vehicle lighting technology, and in particular to a vehicle light optical element, a vehicle light module and a vehicle. Background Art

[0002] Currently, common automotive lighting modules, in addition to the light board, driver, and bracket, typically include multiple components such as the outer lens and light collection structure (including the reflector bowl and lens solution). When the light shape requires a cutoff line, additional components such as a cutoff baffle are also required. The large number of parts in an automotive lighting module results in a large overall size and complex structure, introducing more tolerances (including errors in individual parts and assembly errors), reducing the yield rate. The increased number of materials and assembly steps required by multiple parts also leads to higher production costs.

[0003] Summary of the Invention

[0004] The embodiments of this specification provide a headlight optical element, a headlight module, and a vehicle, which are used to provide a headlight optical element with a simple structure, high efficiency, and small size, so as to reduce the manufacturing difficulty and cost of the headlight module, improve the manufacturing and assembly accuracy of the headlight module, and provide more possibilities for the diversified modeling of the headlight.

[0005] To solve the above technical problems, the embodiments of this specification are implemented as follows:

[0006] An embodiment of the present specification provides an automotive light optical element, which includes one or more optical units 100; the optical unit 100 is provided with a light emitting surface 1 at the front end and a light receiving structure 2 at the rear end, the light receiving structure 2 includes a light incident surface 21 and a reflective surface 22, the light receiving structure 2 is constructed to form an intermediate light image at the focal plane of the light emitting surface 1 after the light incident from the light incident surface 21 is reflected by the reflective surface 22, and the light emitting surface 1 is constructed to image the intermediate light image in front of the automotive light optical element.

[0007] Optionally, the light collecting structure 2 further includes a first cutoff line structure located on the reflective surface 22, wherein the first cutoff line structure is configured to destroy the local reflective effect of the reflective surface 22; at least one focus of the light emitting surface 1 is located at the first cutoff line structure.

[0008] Optionally, the light-collecting structure 2 further includes a cutting surface 23 formed by cutting the reflecting surface 22 , and the shape of a first boundary line 201 between the reflecting surface 22 and the cutting surface 23 is adapted to the shape of a light-shaped cut-off line.

[0009] Optionally, the reflective surface 22 of the light-collecting structure 2 includes a first area 221 coated with a high-absorption material and a second area 222 coated with a high-reflection material. The shape of the boundary line 202 between the first area 221 and the second area 222 is adapted to the shape of the light cut-off line.

[0010] Optionally, the optical unit 100 also includes a first splicing part 3 located at the rear end of the light receiving structure 2, the first splicing part 3 is made of non-transparent material, and the shape of the splicing interface between the first splicing part 3 and the light receiving structure 2 and the second boundary line 203 of the reflecting surface 22 is adapted to the shape of the light cut-off line.

[0011] Optionally, the optical unit 100 further includes a second cutoff line structure located downstream of the reflective surface 22 on the optical path, the second cutoff line structure being configured to block a portion of the light emitted from the reflective surface 22 toward the light emitting surface 1; at least one focus of the light emitting surface 1 is located at the second cutoff line structure.

[0012] Optionally, the second cut-off line structure includes a groove 4 located in the lower side area of ​​the optical unit 100; the groove 4 includes a first side 41 close to the light collecting structure 2 and a second side 42 away from the light collecting structure 2, and the shape of the third boundary line 401 between the first side 41 and the second side 42 is adapted to the shape of the light cut-off line.

[0013] Optionally, the optical unit 100 further includes a second splicing portion 5 located in the groove 4 , and the second splicing portion 5 is made of a non-transparent material.

[0014] Optionally, at least one of the first side surface 41 and the second side surface 42 is coated with a high absorption material or a high reflection material.

[0015] Optionally, the second cut-off line structure is arranged at a position adjacent to the light collecting structure 2 .

[0016] Optionally, a reflective coating is coated on the outer side of the reflective surface 22 .

[0017] Optionally, a reflector 6 is provided on the outer side of the reflective surface 22 , adjacent to the reflective surface 22 and consistent with the contour of the reflective surface 22 .

[0018] An embodiment of the present specification provides a headlight optical element, which includes one or more optical unit groups 200; the optical unit group 200 includes a first optical unit 210 and a second optical unit 220 arranged in sequence along the light path; the rear end of the first optical unit 210 is provided with a light collecting structure 2, and the front end is provided with a first light emitting surface 7; the rear end of the second optical unit 220 is provided with a second light incident surface 8, and the front end is provided with a second light emitting surface 9; the light collecting structure 2 includes a light incident surface 21 and a reflecting surface 22, and the light collecting structure 2 is constructed to form an intermediate light image at a common focal plane of the first light incident surface 21, the second light incident surface 8 and the second light emitting surface 9 after being reflected by the reflecting surface 22, and the first light emitting surface 7 and the second optical unit 220 are constructed to image the intermediate light image in front of the headlight optical element.

[0019] Optionally, the first light emitting surface 7 is configured to control the lateral distribution of light.

[0020] Optionally, the first light-emitting surface 7 includes one or more optical surfaces configured to adjust the propagation direction of light in the left-right direction.

[0021] Optionally, the first light emitting surface 7 , the second light incident surface 8 and the second light emitting surface 9 are configured to jointly control the vertical distribution of light.

[0022] Optionally, at least one of the first light-emitting surface 7 , the second light-incident surface 8 and the second light-emitting surface 9 includes one or more optical surfaces configured to adjust the propagation direction of light in the up and down directions.

[0023] Optionally, the first optical unit 210 and the second optical unit 220 are integrally formed.

[0024] Optionally, a connection structure 230 is formed between the first optical unit 210 and the second optical unit 220 .

[0025] Optionally, the light-collecting structure 2 further includes a first cutoff line structure located on the reflective surface 22, and the first cutoff line structure is constructed to destroy the local reflective effect of the reflective surface 22; the focus of the first light-emitting surface 7 in the left and right directions is located at the first cutoff line structure; the focus of the first light-emitting surface 7, the second light-incident surface 8 and the second light-emitting surface 9 in the up and down directions is located at the first cutoff line structure.

[0026] Optionally, the light-collecting structure 2 further includes a cutting surface 23 formed by cutting the reflecting surface 22, and the shape of a first boundary line 201 between the reflecting surface 22 and the cutting surface 23 is adapted to the shape of a light-shaped cut-off line; or optionally, the reflecting surface 22 of the light-collecting structure 2 includes a first area 221 coated with a high-absorption material on the outside and a second area 222 coated with a high-reflection material on the outside, and the shape of a boundary line 202 between the first area 221 and the second area 222 is adapted to the shape of a light-shaped cut-off line; or optionally, the first optical unit 210 further includes a first splicing part 3 located at the rear end of the light-collecting structure 2, the first splicing part 3 is made of a non-transparent material, and the shape of a splicing interface between the first splicing part 3 and the light-collecting structure 2 and the second boundary line 203 of the reflecting surface 22 is adapted to the shape of a light-shaped cut-off line.

[0027] Optionally, the first optical unit 210 further includes a second cutoff line structure located downstream of the reflecting surface 22 on the optical path, the second cutoff line structure being configured to block a portion of the light emitted from the reflecting surface 22 toward the first light-emitting surface 7; the focal point of the first light-emitting surface 7 in the left-right direction is located at the second cutoff line structure; the focal points of the first light-emitting surface 7, the second light-incident surface 8, and the second light-emitting surface 9 in the up-down direction are located at the second cutoff line structure.

[0028] Optionally, the second cutoff line structure includes a groove 4 located in the lower side area of ​​the first optical unit 210; the groove 4 includes a first side 41 close to the light collecting structure 2 and a second side 42 away from the light collecting structure 2, and the shape of the third boundary line 401 between the first side 41 and the second side 42 is adapted to the shape of the light cutoff line.

[0029] Optionally, the first optical unit 210 further includes a second splicing portion 5 located in the groove 4, and the second splicing portion 5 is made of a non-transparent material; or optionally, at least one of the first side surface 41 and the second side surface 42 is coated with a highly absorbing material or a highly reflective material.

[0030] Optionally, the second cut-off line structure is arranged at a position adjacent to the light collecting structure 2 .

[0031] Optionally, a reflective coating is coated on the outer side of the reflective surface 22 ; or optionally, a reflector 6 is provided on the outer side of the reflective surface 22 , adjacent to the reflective surface 22 and consistent with the contour of the reflective surface 22 .

[0032] An embodiment of this specification provides a vehicle light module, including a vehicle light optical element provided in the embodiment of this specification.

[0033] A vehicle provided in an embodiment of this specification includes a vehicle light module provided in an embodiment of this specification.

[0034] One embodiment of the present specification can at least achieve the following beneficial effects: a headlight optical element including one or more optical units is provided, and a light emitting surface is provided at the front end of the optical unit, and a light receiving structure is provided at the rear end, and the light receiving structure includes a light incident surface and a reflecting surface, and the light receiving structure is constructed to reflect the light incident from the light incident surface through the reflecting surface to form an intermediate light image at the focal plane of the light emitting surface, and the light emitting surface is constructed to image the intermediate light image in front of the headlight optical element, thereby reducing the size of the headlight optical element, and realizing the headlight lighting function in a simple structure, high efficiency and small size, which not only reduces the manufacturing cost and is conducive to improving the manufacturing and assembly accuracy of the headlight module, but also the smaller headlight optical element size brings a higher degree of freedom in the overall lamp shape design, which is beautiful while reducing the difficulty of the overall lamp structure design. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] FIG1 shows a perspective view of a headlight optical element (optical unit) provided in an embodiment of this specification;

[0037] FIG2 shows a perspective view of a headlight optical element (optical unit) with a cut-off line structure provided in an embodiment of this specification;

[0038] FIG3 shows a perspective view of another headlight optical element (optical unit) with a cut-off line structure provided in an embodiment of this specification;

[0039] FIG4 shows a perspective view of a headlight optical element including a plurality of optical units provided in an embodiment of this specification;

[0040] FIG5 shows a perspective view of the layout of a headlight optical element including a plurality of optical units provided by an embodiment of this specification;

[0041] FIG6 shows a longitudinal cross-sectional view of a headlight optical element (optical unit) provided in an embodiment of this specification;

[0042] FIG7 shows a schematic longitudinal cross-sectional view of a headlight optical element provided with a reflector according to an embodiment of this specification;

[0043] FIG8 is a schematic diagram showing a position of a first cutoff line structure provided in a headlight optical element according to an embodiment of this specification;

[0044] FIG9 is a partial perspective schematic diagram of a headlight optical element provided with a first cut-off line structure according to an embodiment of this specification;

[0045] FIG10 is a partial perspective schematic diagram of another headlight optical element provided with a first cut-off line structure according to an embodiment of this specification;

[0046] FIG11 is a partial perspective schematic diagram of another vehicle light optical element provided with a first cut-off line structure according to an embodiment of this specification;

[0047] FIG12 is a partial longitudinal cross-sectional view of another vehicle light optical element provided with a first cut-off line structure according to an embodiment of this specification;

[0048] FIG13 is a schematic diagram showing a position of a second cutoff line structure provided in a headlight optical element according to an embodiment of this specification;

[0049] FIG14 is a partial perspective schematic diagram of a headlight optical element provided with a second cut-off line structure according to an embodiment of this specification;

[0050] FIG15 is a partial longitudinal cross-sectional view of a headlight optical element provided with a second cut-off line structure according to an embodiment of this specification;

[0051] FIG16 is a partial longitudinal cross-sectional view of another headlight optical element provided with a second cut-off line structure according to an embodiment of this specification;

[0052] FIG17 is a schematic structural diagram of a light emitting surface of a vehicle light optical element provided in an embodiment of this specification;

[0053] FIG18 is a schematic structural diagram of a light emitting surface of another vehicle light optical element provided in an embodiment of this specification;

[0054] FIG19 shows a perspective view of a headlight optical element (optical unit assembly) provided in an embodiment of this specification;

[0055] FIG20 shows a perspective view of a headlight optical element (optical unit assembly) with a cut-off line structure provided by an embodiment of this specification;

[0056] FIG21 shows a perspective view of another vehicle light optical element (optical unit assembly) having a cut-off line structure provided by an embodiment of this specification;

[0057] FIG22 shows a longitudinal cross-sectional view of a headlight optical element (optical unit assembly) provided in an embodiment of this specification;

[0058] FIG23 shows a cross-sectional view of an optical element (optical unit group) of a vehicle light provided in an embodiment of this specification;

[0059] FIG24 shows a perspective view of a headlight optical element including a plurality of optical unit groups provided by an embodiment of this specification;

[0060] FIG25 shows a cross-sectional view of the vehicle light optical element shown in FIG24 provided in an embodiment of the present specification;

[0061] FIG26 shows a perspective view of another vehicle light optical element including a plurality of optical unit groups provided by an embodiment of this specification;

[0062] FIG27 shows a perspective view of another vehicle light optical element including a plurality of optical unit groups provided by an embodiment of this specification;

[0063] FIG28 shows a longitudinal cross-sectional view of the vehicle light optical element shown in FIG27 provided in an embodiment of this specification;

[0064] FIG29 shows a perspective view of another vehicle light optical element including a plurality of optical unit groups provided by an embodiment of this specification;

[0065] FIG30 shows a cross-sectional view of the vehicle light optical element shown in FIG29 according to an embodiment of the present specification.

[0066] Explanation of the reference numerals in the figure: 100-optical unit; 1-light emitting surface; 11-optical lens surface; 12-non-optical step surface; 2-light collecting structure; 21-light incident surface; 22-reflecting surface; 221-first area; 222-second area; 23-cutting surface; 201-first boundary line; 202-dividing line; 203-second boundary line; 3-first splicing part; 4-groove; 41-first side surface; 42-second side surface; 401-third boundary line; 5-second splicing part; 6-reflector; 200-optical unit group; 210-first optical unit; 220-second optical unit; 7-first light emitting surface; 8-second light incident surface; 9-second light emitting surface; 230-connecting structure. DETAILED DESCRIPTION

[0067] To make the purpose, technical solutions, and advantages of one or more embodiments of this specification more clear, the technical solutions of one or more embodiments of this specification will be clearly and completely described below in conjunction with the specific embodiments of this specification and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of one or more embodiments of this specification.

[0068] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and objectives that can be achieved by the present invention.

[0069] It should be noted that, in the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Unless otherwise specified, "plurality" means two or more. The orientation or positional relationship indicated by the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0070] In the following description, directions / orientations such as up, down, left, right, front (front end), and rear (rear end) are all based on the vehicle driving position.

[0071] The term "destruction" in this specification can be interpreted as the elimination of light during reflection, refraction, and other processes. For example, the destruction of a cutoff line structure eliminates local reflections from a reflective surface. (Cutoff line)

[0072] The adaptation in this specification can be interpreted as the two being adapted to each other being in a proportional enlargement or reduction relationship; for example, the shape of the first boundary line 201 between the reflecting surface 22 and the cutting surface 23 is adapted to the shape of the light-shaped cut-off line, which can be interpreted as the shape of the first boundary line 201 being in a proportional enlargement or reduction relationship with the shape of the light-shaped cut-off line.

[0073] Currently, one approach to improving vehicle headlight design is to create flatter lamps. However, this flat design also places higher demands on the size of the lighting module. Specifically, the lighting module must be smaller while still meeting optical performance requirements.

[0074] In the embodiments of this specification, using Figures 1 to 6 as examples, a headlight optical element is provided, which includes one or more optical units 100; the optical units 100 are provided with a light-emitting surface 1 at the front end and a light-collecting structure 2 at the rear end. The light-collecting structure 2 includes a light-incident surface 21 and a reflective surface 22. The light-collecting structure 2 is configured to reflect light incident from the light-incident surface 21 via the reflective surface 22 to form an intermediate light image at the focal plane of the light-emitting surface 1. The light-emitting surface 1 is configured to image the intermediate light image in front of the headlight optical element. For example, Figure 6 shows a longitudinal cross-sectional view of a headlight optical element (optical unit 100) corresponding to Figures 2 or 3 provided in an embodiment of this specification, and specifically, schematically illustrates the propagation direction of light.

[0075] The headlight optical element may be made of a transparent light-guiding material. Optionally, the transparent light-guiding material may include PMMA, PC, or glass, but is not limited thereto.

[0076] The light incident surface 21, the reflective surface 22, and the light emitting surface 1 are sequentially arranged along the light path. The light incident surface 21 is close to the light source and collects light, while the reflective surface 22 performs secondary light distribution on the light emitted by the light source, so that the light converges at the light emitting surface 1 and then emerges to form a light shape. In actual application, the headlight optical element (the optical unit 100) can form a target light shape or a portion of a target light shape in the traffic space in front of a vehicle equipped with a headlight module containing the headlight optical element.

[0077] The light incident surface 21 may be a smooth surface, for example, a flat surface, a convex surface, or a concave surface. In practical applications, the light incident surface 21 may also be configured as an applicable patterned surface.

[0078] In practical applications, the distance between the light source and the light collecting structure 2 can be set as small as possible to improve light efficiency. For example, the distance between the light source and the light collecting structure 2 can be set to no more than 5 mm. Optionally, the light source can be an LED light source or a laser light source.

[0079] In addition, when the headlight optical element includes a plurality of optical units 100, optionally, the plurality of optical units 100 can be formed integrally to obtain the headlight optical element; or optionally, the plurality of optical units 100 can be formed separately and then spliced ​​together to obtain the headlight optical element.

[0080] Specifically, when the headlight optical element includes multiple optical units 100, the multiple optical units 100 can be formed integrally or spliced ​​according to actual needs. In actual applications, the number of optical units 100 actually included in the headlight optical element can be determined based on the requirements of luminous flux and optical performance.

[0081] For example, Figure 4 shows an example of an integrally formed vehicle light optical element comprising five optical units 100. As another example, Figure 5 shows an integrally formed vehicle light optical element comprising a first portion comprising two optical units 100 and a second portion comprising three optical units 100.

[0082] It is understood that the combination of multiple optical units 100 can be configured according to actual needs and is not limited to the exemplary groupings shown in Figures 4 and 5 . Furthermore, the relative positions of the different groups shown in Figure 5 are merely exemplary. In actual applications, multiple optical units 100 can be combined not only in a horizontal arrangement as shown in Figures 4 and 5 , but also in various shapes such as vertical, C-shaped, and L-shaped to meet the overall lighting design requirements.

[0083] In the embodiments of the present specification, although the front and rear ends of the optical unit 100 shown in the drawings have substantially the same size, the shape of the optical unit 100 is not limited to the examples shown in the drawings.

[0084] Optionally, the shape of the longitudinal section of the optical unit 100 perpendicular to the front-to-back direction can be any shape, for example, a rectangle, a regular trapezoid (isosceles or unequal), an inverted trapezoid (isosceles or unequal), a rhombus, or other shapes. In actual application, the upper and lower sides of the optical unit 100 can be of equal or unequal width.

[0085] Optionally, the dimensions of multiple longitudinal cross-sections of the optical unit 100 perpendicular to the front-to-back direction may be the same or different. For example, the area of ​​the longitudinal cross-section of the main light-transmitting portion of the optical unit 100 near the light-emitting side may be equal to or smaller than the area of ​​the longitudinal cross-section near the light-entering side. In practical applications, the opening size of the front light-emitting side of the optical unit 100 may be smaller than or equal to the size of the light-entering opening at the rear end of the optical unit 100. Setting the size of the light-emitting side smaller than the size of the light-entering side helps reduce the overall size of the optical unit 100.

[0086] Based on the solution of the embodiment of this specification, the optical unit 100 is an integrally formed component, which replaces the headlight optical assembly in the prior art that includes at least a light-collecting structure and an outer lens and other multiple parts. It has lower material costs, can reduce assembly links, reduce assembly difficulty, and increase production speed; at the same time, fewer parts have fewer component tolerances and assembly tolerances, which can improve the manufacturing and assembly accuracy of the headlight module while reducing manufacturing costs, and improve product quality and performance stability.

[0087] Compared to conventional solutions, the headlight optical element provided in the embodiments of this specification, which includes one or more optical units 100, has at least one focal point of the light-emitting surface 1 in the optical unit 100 located at or near the reflective surface 22, significantly reducing the length of the headlight optical element comprised of the optical units 100 in the front-to-back direction. Furthermore, the number of refractive surfaces through which light passes is reduced, and the light is transmitted within the medium, resulting in higher light utilization efficiency. Consequently, the structure is simple and efficient, and the light channel and light-emitting surface can be smaller. Therefore, the smaller size of the headlight optical element provided in the embodiments of this specification allows for greater freedom in overall lamp design, resulting in aesthetically pleasing appearance while reducing the difficulty of overall lamp structural design.

[0088] While common automotive light optics on the market are typically over 25mm tall, the optical unit's light-emitting surface 1, as provided in the embodiments of this specification, can be designed with a height and width of less than 5mm, significantly smaller than conventional solutions. This smaller light-emitting surface reduces the space occupied by the optical components and creates a more aesthetically pleasing design. This reduces the complexity of overall lamp design and allows for greater flexibility in overall lamp styling.

[0089] In at least some embodiments of the present specification, the light collecting structure 2 can be used to collect the light emitted by the light source and converge the light to the light emitting surface 1 using the reflective surface 22 .

[0090] The reflective surface 22 can be a continuous curved surface. Specifically, the reflective surface 22 can be a curved surface that convexly projects toward the rear end. More specifically, the reflective surface 22 can be configured to converge light incident thereon to a certain degree in both the left-right and up-down directions. In practical applications, when a headlight optical element includes multiple optical units 100, any two of the multiple optical units 100 can have different light reflection angles and different degrees of convergence, allowing for configuration based on actual light pattern design requirements.

[0091] The reflective surface 22 may be a total reflective surface, that is, when light is incident on the reflective surface 22 at an angle greater than a critical angle, only light reflection occurs on the reflective surface 22, and substantially no light refraction occurs.

[0092] In actual applications, based on the application principles of automotive lighting optics, the target light pattern is generated by projecting the light spot at the focal plane (the light spot is formed by the intersection of the focal plane and the light beam) through the optical system (e.g., light exit surface 1). The shape of the light spot at the focal plane is a key factor influencing the shape of the target light pattern, while the energy distribution at the focal plane is a key factor influencing the brightness distribution of the target light pattern. Furthermore, according to regulatory requirements for automotive lighting distribution, the brightness distribution of the target light pattern requires a maximum light intensity point. In actual applications, ensuring or even increasing the maximum light intensity point of the target light pattern while reducing the size of the automotive lighting optic is crucial and presents a key challenge in the manufacture of small-sized automotive lighting optics.

[0093] In the embodiments of this specification, a side-lit reflective structure is employed to reduce the size of the headlight optical element. However, due to the inherent characteristics of this reflective structure, the energy distribution at the reflective surface 22 is uneven, which in turn leads to uneven energy distribution at the focal plane at adjacent locations. This is because the closer the reflective surface 22 is to the light source (for example, the lower left area of ​​the reflective surface 22 shown in Figures 6 to 16), the more energy it receives. However, the closer the area is to the light source, the less likely it is to meet the conditions of the total internal reflection theorem. Therefore, it is difficult to rely on the reflective effect of the reflective surface 22 material itself to reflect enough light through the light-emitting surface 1 to contribute to the light intensity.

[0094] In the embodiments of this specification, in order to achieve the maximum light intensity point in the brightness distribution of the target light pattern, a reflective coating can be applied to the outside of the reflective layer 22 or a conformal reflector can be added. In this case, the light-emitting surface 1 can be constructed so that its focus falls on the area with higher light intensity of the reflective surface 22 (for example, the lower left area of ​​the reflective surface 22 shown in Figures 6 to 16), and the reflective coating or conformal reflector can be used to obtain a larger maximum light intensity point in the target light pattern.

[0095] Optionally, the outer side of the reflective surface 22 may be coated with a reflective coating to enhance the reflective performance of the reflective surface 22 and improve light utilization efficiency.

[0096] In practical applications, the materials used to form the reflective coating may include, but are not limited to, aluminum, silver, stainless steel, chromium, etc. Furthermore, in practical applications, the reflective coating may be formed by, but are not limited to, processes such as spraying, vacuum plating, hot stamping, and in-mold injection molding.

[0097] Optionally, as shown in FIG7 , a reflector 6 can be provided on the outside of the reflective surface 22 , adjacent to the reflective surface 22 and having the same contour as the reflective surface 22 , to enhance the reflective performance of the optical unit 100 and improve light utilization. A uniform gap can be formed between the reflective surface 22 and the reflector 6 .

[0098] In practical applications, the reflector 6 can be positioned as close as possible to the reflective surface 22. For example, the reflector 6 can be bonded to the outside of the reflective surface 22 using a lens bonding process. In this case, a transparent adhesive can be used to fill the gap between the reflective surface 22 and the reflector 6. In another example, the reflector 6 can be fixed to the outside of the reflective surface 22 using a support structure. In this case, a uniform air gap can be formed between the reflective surface 22 and the reflector 6.

[0099] The headlight optical element (optical unit 100) provided in the embodiments of this specification can provide a light pattern without a cutoff line, such as that shown in Figure 1. Figure 1 shows a perspective view of a headlight optical element (optical unit) provided in the embodiments of this specification, without a cutoff line structure. In practical applications, the headlight optical element (optical unit 100) shown in Figure 1 can be used in high beam lamps.

[0100] In at least some embodiments of the present specification, a cutoff line structure may also be provided in the optical unit 100 to form a light shape having a cutoff line, such as Figures 2 and 3. Figure 2 shows a stereoscopic view of a headlight optical element (optical unit) having a cutoff line structure provided in an embodiment of the present specification, wherein a cutoff line structure is provided, specifically, the shape of a first boundary line 201 between the reflecting surface 22 and the cutting surface 23 can be adapted to the shape of the light shape cutoff line. Figure 3 shows a stereoscopic view of another headlight optical element (optical unit) having a cutoff line structure provided in an embodiment of the present specification, wherein a cutoff line structure is provided, specifically, the shape of a first boundary line 201 between the reflecting surface 22 and the cutting surface 23 can be adapted to the shape of the light shape cutoff line. In actual applications, the headlight optical element (optical unit 100) as shown in Figures 2 or 3 can be applied to low beam lights, front fog lights, corner lights, or steering auxiliary lights, etc.

[0101] The cutoff line structure is described below mainly with reference to Figures 8 to 16. In the embodiments of this specification, the cutoff line structure (including the first cutoff line structure and the second cutoff line structure) may specifically refer to a structure for forming a light-shaped cutoff line in a light shape.

[0102] In an optional embodiment, the light-collecting structure 2 may further include a first cutoff line structure located on the reflective surface 22, wherein the first cutoff line structure is configured to destroy the local reflective effect of the reflective surface 22. Specifically, the first cutoff line structure may be configured to prevent part of the light directed toward the reflective surface 22 from being reflected.

[0103] The focal point of the light exit surface 1 (see Figures 2 and 3) can be located at the first cut-off structure, for example, near the first cut-off structure. In addition, in actual applications, when the light exit surface 1 has multiple focal points, at least one focal point of the light exit surface 1 can be located near the first cut-off structure, thereby forming a clear cut-off line in the light shape.

[0104] As shown in Figure 8 , the oval dashed box indicates the region where the first cutoff structure is formed, i.e., the region where the reflective effect of the reflective surface 22 is destroyed. Figure 8 also shows the light incident surface 21. Furthermore, the light rays shown with dashed lines in Figure 8 may represent light rays blocked by the first cutoff structure.

[0105] As an optional example, referring to Figures 9 and 10, the light-collecting structure 2 may further include a cut surface 23 formed by cutting the reflective surface 22, and the shape of a first intersection line 201 between the reflective surface 22 and the cut surface 23 may be adapted to the shape of the light cutoff line. At least one focal point of the light-emitting surface 1 (see Figures 2 and 3) may be located at the first intersection line 201, for example, on or near the first intersection line 201.

[0106] Alternatively, as shown in FIG9 , the cutting surface 23 may extend in the left-right direction along a straight line or a smooth curve. The cutting surface 23 may be a flat surface or a smoothly curved surface. Consequently, the projection of the first intersection line 201 between the cutting surface 23 and the reflective surface 22 (i.e., the projection of the first intersection line 201 onto a plane perpendicular to the principal optical axis of the light-emitting surface 1) may be a straight line. In practical applications, when the headlight optical element is used in front fog lamps or auxiliary turn signals (corner lights), the cutoff line in the light pattern may be a horizontal line.

[0107] Alternatively, as shown in FIG10 , the cutting surface 23 may extend in the left-right direction along a line having an inflection point. The cutting surface 23 may be a surface including steps. Thus, the projection of the first intersection line 201 between the cutting surface 23 and the reflective surface 22 (i.e., the projection of the intersection line onto a plane perpendicular to the principal optical axis of the light-emitting surface 1) may be a line having an inflection point. In practical applications, when the headlight optical element is used in a low-beam headlight, the cutoff line in the light pattern may be a line having an inflection point.

[0108] In practical applications, the cutting surface 23 may be directly formed when the optical unit 100 is integrally formed, or may be formed by cutting through a subsequent processing process after the optical unit 100 is formed.

[0109] As another optional example, referring to FIG11 , the reflective surface 22 of the light-collecting structure 2 may include a first region 221 coated with a highly absorbent material and a second region 222 coated with a highly reflective material. The shape of the boundary 202 between the first region 221 and the second region 222 is adapted to the shape of the light cutoff line. At least one focal point of the light-emitting surface 1 (see FIG2 and FIG3 ) may be located at the boundary 202, for example, on or near the boundary 202.

[0110] Among them, optionally, the dividing line 202 can be a smooth straight line or curve extending in the left-right direction, and its projection (i.e., the projection of the dividing line 202 on the plane perpendicular to the main optical axis of the light-emitting surface 1) can be a straight line; or optionally, the dividing line 202 can be a smooth broken line extending in the left-right direction, and its projection (i.e., the projection of the dividing line 202 on the plane perpendicular to the main optical axis of the light-emitting surface 1) can be a line with an inflection point.

[0111] The highly reflective material applied to the first region 221 may include, but is not limited to, aluminum, silver, stainless steel, chromium, and the like. The highly absorbent material applied to the second region 222 may include black paint, which may contain, for example, pigments (e.g., carbon black, iron oxide, titanium dioxide, and the like), solvents (e.g., dryers, thinners, and preservatives), resins (e.g., dryers, thinners, and preservatives), and additives (e.g., dryers, thinners, and preservatives). Examples of black paint are not limited to these, and examples of highly absorbent materials are not limited to black paint.

[0112] As another optional example, referring to FIG12 , the optical unit 100 further includes a first splicing portion 3 located at the rear end of the light-collecting structure 2. The first splicing portion 3 is made of a non-transparent material, and the shape of a second intersection line 203 between the splicing interface between the first splicing portion 3 and the light-collecting structure 2 and the reflective surface 22 is adapted to the shape of a light cutoff line. At least one focal point of the light-emitting surface 1 (see FIG2 and FIG3 ) can be located at the second intersection line 203, for example, on or near the second intersection line 203.

[0113] Among them, optionally, the second boundary line 203 can be a smooth straight line or curve extending in the left-right direction, and its projection (i.e., the projection of the second boundary line 203 on the plane perpendicular to the main optical axis of the light-emitting surface 1) can be a straight line; or optionally, the second boundary line 203 can be a smooth broken line extending in the left-right direction, and its projection (i.e., the projection of the second boundary line 203 on the plane perpendicular to the main optical axis of the light-emitting surface 1) can be a line with an inflection point.

[0114] The non-transparent material constituting the first splicing portion 3 may include black PC (polycarbonate) material, black PMMA (polymethyl methacrylate) material, etc., but is not limited thereto.

[0115] In practical applications, the first splicing portion 3 can be formed during the process of integrally forming the optical unit 100; or alternatively, the first splicing portion 3 can be formed through a subsequent process after the main body of the optical unit 100 is integrally formed.

[0116] In an optional embodiment, the optical unit 100 may further include a second cutoff line structure located downstream of the reflective surface 22 on the optical path, and the second cutoff line structure may be configured to block part of the light emitted from the reflective surface 22 toward the light output surface 1 (see Figures 2 and 3).

[0117] The focal point of the light exit surface 1 (see Figures 2 and 3) can be located at the second cut-off structure, for example, near the second cut-off structure. Furthermore, in practical applications, when the light exit surface 1 has multiple focal points, at least one of the focal points of the light exit surface 1 can be located near the second cut-off structure, thereby forming a clear cut-off line in the light pattern.

[0118] In practical applications, to reduce the length of the optical unit 100, the second cutoff structure can be positioned adjacent to the light-collecting structure 2. As shown in FIG13 , the oval dashed box indicates the region where the second cutoff structure is formed. This region is preferably located downstream of the light-collecting structure 2 (downstream of the reflective surface 22 on the optical path) and adjacent to the light-collecting structure 2 in the optical unit 100. The light rays shown by dashed lines in FIG13 may represent light rays cut off by the second cutoff structure.

[0119] As an optional example, referring to Figures 14 and 15 , the second cutoff line structure may include a groove 4 located in the lower side region of the optical unit 100; the groove 4 may include a first side surface 41 proximal to the light-collecting structure 2 and a second side surface 42 distal to the light-collecting structure 2, and the shape of a third intersection line 401 between the first side surface 41 and the second side surface 42 may be adapted to the shape of the light-shaped cutoff line. At least one focal point of the light-emitting surface 1 (see Figures 2 and 3 ) may be located at the third intersection line 401, for example, on or near the third intersection line 401.

[0120] As another optional example, referring to FIG16 , the optical unit 100 may further include a second splicing portion 5 located in the groove 4, wherein the second splicing portion 5 is made of a non-transparent material. The non-transparent material constituting the second splicing portion 5 may include, but is not limited to, black PC (polycarbonate) material, black PMMA (polymethyl methacrylate) material, or the like.

[0121] In practical applications, the second splicing portion 5 can be formed during the process of integrally forming the optical unit 100; or alternatively, the second splicing portion 5 can be formed through a subsequent process after the main body of the optical unit 100 is integrally formed.

[0122] As another optional example, at least one of the first side surface 41 and the second side surface 42 may be coated with a highly absorbent material or a highly reflective material. The highly reflective material may include, but is not limited to, aluminum, silver, stainless steel, chromium, and the like. The highly absorbent material may include, for example, black paint. The black paint may contain, for example, pigments (e.g., carbon black, iron oxide, titanium dioxide), solvents (e.g., dryers, thinners, preservatives), resins (e.g., dryers, thinners, preservatives), and additives (e.g., dryers, thinners, preservatives). Examples of black paint are not limited to these, and examples of highly absorbent materials are not limited to black paint. In actual applications, the first side surface 41 and the second side surface 42 may not be coated with any material, and the light path blocking effect may be achieved solely by adjusting the angle. The highly absorbent or highly reflective material can further enhance the light blocking effect.

[0123] Alternatively, the first side surface 41 and the second side surface 42 may extend in a straight line or a smooth curve in the left-right direction. The first side surface 41 and the second side surface 42 may be flat or smoothly curved. Thus, the projection of the third intersection line 401 between the first side surface 41 and the second side surface 42 (i.e., the projection of the third intersection line 401 onto a plane perpendicular to the principal optical axis of the light exit surface 1) may be a straight line. In practical applications, when the headlight optical element is used in front fog lights or auxiliary steering lights (corner lights), the cutoff line in the light pattern may be a horizontal line.

[0124] Alternatively, as shown in FIG14 , in the perspective portion shown with a dotted line, it can be seen that the first side surface 41 or the second side surface 42 can extend in the left-right direction along a line having an inflection point. The first side surface 41 or the second side surface 42 can be a surface including a step. Consequently, the projection of the third intersection line 401 between the first side surface 41 and the second side surface 42 (i.e., the projection of the intersection line onto a surface perpendicular to the principal optical axis of the light exit surface 1 ) can be a line having an inflection point. In actual applications, when the headlight optical element is used in a low-beam headlight, the cutoff line in the light pattern can be a line having an inflection point.

[0125] Based on one or more of the above-described embodiments of this specification, a headlight optical element obtained by arranging and combining multiple optical units 100 can form a high beam or low beam light pattern in the traffic space in front of a vehicle equipped with a headlight module containing the corresponding headlight optical element. Optionally, the headlight optical element of the embodiments of this specification can also be configured as a front fog lamp, cornering lamp, or auxiliary turn signal lamp.

[0126] In at least some embodiments of the present specification, in the provided vehicle light optical element, the light emitting surface 1 of the optical unit 100 may optionally be a continuous curved surface. In practical applications, the continuous curved surface may be a revolution curved surface, specifically, a spherical surface or an aspherical surface.

[0127] Alternatively, the light-emitting surface 1 of the optical unit 100 may be a step-patterned surface, and the step-patterned surface may include a plurality of optical lens surfaces 11 and a non-optical step surface 12 connecting the plurality of optical lens surfaces 11 .

[0128] Optionally, to achieve a target light shaping effect, the focal points of the multiple optical lens surfaces 11 may be arranged to coincide with or be close to each other. When the headlight optical element includes a cutoff structure, to achieve a clearer light shaping cutoff, the focal point of at least one of the multiple optical lens surfaces 11 may be located near the cutoff structure.

[0129] In practical applications, the step pattern surface may include step Fresnel checkered pattern, step Fresnel vertical stripes, step Fresnel horizontal stripes, step Fresnel diamond pattern, step Fresnel polygonal pattern and step Fresnel special-shaped stripes, etc. The types of step pattern surfaces are not limited to the examples listed here.

[0130] As an example, Figure 17 shows a stepped Fresnel checkerboard pattern. In Figure 17, multiple optical lens surfaces 11 are arranged in a staggered checkerboard pattern, with adjacent optical lens surfaces 11 connected by non-optical stepped surfaces 12. Figure 18 shows a stepped Fresnel vertical stripe pattern. In Figure 18, multiple optical lens surfaces 11 are arranged in a staggered, side-by-side pattern, with adjacent optical lens surfaces 11 connected by non-optical stepped surfaces 12.

[0131] In addition, in an optional implementation, the outline of the light emitting surface 1 can be arbitrarily set according to design requirements. For example, it can be square, circular or any other shape.

[0132] In addition, in an optional implementation, a microstructure pattern may be provided on the light-emitting surface 1 to adjust the cut-off line gradient.

[0133] In at least some embodiments of the present specification, the provided headlight optical element may include a low beam three-zone structure for forming a low beam three-zone light shape in the target light shape of the headlight optical element, so that the headlight optical element meets the three-zone requirements of the regulations.

[0134] Specifically, a low-beam three-zone structure can be provided on the upper and / or lower surface of the headlight optical element (optical unit 100). Optionally, the low-beam three-zone structure can include a first low-beam three-zone structure, which can be configured as an outwardly convex structure or an inwardly concave structure on the upper surface of the optical unit 100. Optionally, the low-beam three-zone structure can include a second low-beam three-zone structure, which can be configured as an outwardly convex structure or an inwardly concave structure on the lower surface of the optical unit 100.

[0135] In addition, in an optional implementation, a coating and / or pattern may be added to the upper side and / or lower side of the optical unit 100. This can optimize the system stray light.

[0136] In addition, in an optional implementation, the upper side and the lower side of the headlight optical element provided in the embodiment of this specification can be constructed to be hidden in the decorative frame or protrude from the decorative frame according to actual styling needs.

[0137] It should be noted that not all embodiments of the present application are shown in the accompanying drawings, and those skilled in the art can derive more embodiments of the present application based on the combination of the features described in this specification. For example, although the light-emitting surface 1 is shown as a stepped Fresnel vertical stripe as an example in Figures 1 to 4, those skilled in the art will understand that continuous curved surfaces or other types of stepped patterned surfaces are also feasible. For another example, although no chamfer is shown between the reflective surface and the light-entering surface of the headlight optical element (optical unit) shown in Figure 1, it is understandable that in actual applications, due to reasons such as manufacturing process, a chamfered surface may exist between the reflective surface and the light-entering surface. The examples given here are not exhaustive.

[0138] In another embodiment of the present specification, taking Figures 19 to 30 as examples, a headlight optical element is provided, which includes one or more optical unit groups 200; the optical unit group 200 includes a first optical unit 210 and a second optical unit 220 arranged in sequence along the light path; the rear end of the first optical unit 210 is provided with a light receiving structure 2, and the front end is provided with a first light emitting surface 7; the rear end of the second optical unit 220 is provided with a second light incident surface 8, and the front end is provided with a second light emitting surface 9; the light receiving structure 2 includes a light incident surface 21 and a reflecting surface 22, and the light receiving structure 2 is constructed to form an intermediate light image at a common focal plane of the first light incident surface 7, the second light incident surface 8 and the second light emitting surface 9 after the light incident from the light incident surface 21 is reflected by the reflecting surface 22, and the first light emitting surface 7 and the second optical unit 220 are constructed to image the intermediate light image in front of the headlight optical element. Figure 22 shows a longitudinal cross-sectional view of a headlight optical element (optical unit assembly 200) corresponding to Figure 20 or Figure 21, provided in accordance with an embodiment of this specification. Figure 23 shows a cross-sectional view of a headlight optical element (optical unit assembly 200) corresponding to Figure 19, Figure 20, or Figure 21, provided in accordance with an embodiment of this specification. Specifically, Figures 22 and 23 schematically illustrate the direction of light propagation within the headlight optical element (optical unit assembly 200).

[0139] In an embodiment of the present specification, the first light exit surface 7 can be configured to control the lateral distribution of light. Specifically, the first light exit surface 7 can include one or more optical surfaces configured to adjust the propagation direction of light in the left-right direction. Optionally, at least some of the one or more optical surfaces included in the first light exit surface 7 can converge light in the left-right direction; further optionally, at least some of the one or more optical surfaces included in the first light exit surface 7 can diffuse light in the left-right direction.

[0140] As shown in Figure 23, the cross-section of the first light-emitting surface 7 can be a curved surface convex to the front, so that the light is gathered in the left and right directions. As shown in Figures 24 to 30, the cross-section of the first light-emitting surface 7 can include multiple optical surfaces, and these multiple optical surfaces can include one or more curved surfaces convex to the front. In general, as shown in Figures 24 to 30, the one or more optical surfaces in the first light-emitting surface can be patterned surfaces set according to actual light distribution requirements. It should be noted that the multiple patterned surfaces included in the first light-emitting surface 7 of the headlight optical element do not need to correspond one-to-one with the optical unit group 200.

[0141] In an embodiment of the present specification, the first light-emitting surface 7, the second light-entering surface 8, and the second light-emitting surface 9 can be configured to jointly control the vertical distribution of light. Specifically, at least one of the first light-emitting surface 7, the second light-entering surface 8, and the second light-emitting surface 9 may include one or more optical surfaces configured to adjust the propagation direction of light in the vertical direction. Optionally, at least some of the one or more optical surfaces included in at least one of the first light-emitting surface 7, the second light-entering surface 8, and the second light-emitting surface 9 can cause a certain degree of convergence of light in the vertical direction.

[0142] In practical applications, the first light-emitting surface 7 can be configured to determine the left-right focus of the light. More specifically, the left-right focus of at least some of the optical surfaces included in the first light-emitting surface 7 can be at the common focal plane, for example, near the cutoff line structure of the optical unit assembly 200 described below. The first light-emitting surface 7, the second light-incident surface 8, and the second light-emitting surface 9 can be configured to jointly determine the up-down focus of the light. More specifically, the up-down focus of at least some of the optical surfaces of the first light-emitting surface 7, the second light-incident surface 8, and the second light-emitting surface 9 can be at the common focal plane, for example, near the cutoff line structure of the optical unit assembly 200 described below.

[0143] In the embodiments of the present specification, the light incident surface 21, the reflective surface 22, the first light emitting surface 7, the second light incident surface 8 and the second light emitting surface 9 can be arranged in sequence along the light path. The light incident surface 21 is close to the light source and collects light, and the reflective surface 22 performs secondary light distribution on the light emitted by the light source, so that the light is successively emitted through the first light emitting surface 7, the second light incident surface 8 and the second light emitting surface 9 to adjust the propagation direction and then form a light shape. In actual application, the headlight optical element (the optical unit group 200) can form a target light shape or a part of a target light shape in the traffic space in front of a vehicle equipped with a headlight module including the headlight optical element.

[0144] The arrangement of the light collecting structure 2 and the light source may be consistent with the above-mentioned embodiment, see FIG. 7 to FIG. 16 and related descriptions, which will not be repeated here.

[0145] In addition, when the headlight optical element includes multiple optical unit groups 200, optionally, the multiple optical unit groups 200 can be formed integrally to obtain the headlight optical element; or optionally, the multiple optical unit groups 200 can be formed separately and then spliced ​​to obtain the headlight optical element. Specifically, when the headlight optical element includes multiple optical unit groups 200, the multiple optical unit groups 200 can be formed integrally or spliced ​​according to actual needs. In actual application, the number of optical unit groups 200 actually included in the headlight optical element can be determined according to the requirements of luminous flux and optical performance. For example, Figures 24, 26, 27 and 29 all show examples of headlight optical elements that are integrally formed and include multiple optical unit groups 200. It can be understood that the combination form of multiple optical unit groups 200 can be set according to actual needs, without being limited to the aforementioned examples. Multiple optical unit groups 200 can be combined not only into a horizontal arrangement as shown in FIG. 24 , FIG. 26 , FIG. 27 and FIG. 29 , but also into various shapes such as a vertical arrangement, a C shape, an L shape, etc., to meet the requirements of the overall lamp shape.

[0146] Furthermore, in the embodiments of the present specification, although the front and rear ends of the first optical unit 210 in the optical unit assembly 200 shown in the drawings are substantially the same in size, the shape of the first optical unit 210 is not limited to the example shown in the drawings. Furthermore, although the longitudinal cross-sectional dimensions of the second optical unit 220 in the optical unit assembly 200 shown in the drawings are larger than those of the first optical unit 210, this is not limited to this in actual applications. For example, the longitudinal cross-sectional dimensions of the second optical unit 220 may be substantially the same, or the longitudinal cross-sectional dimensions of the second optical unit 220 may be smaller than those of the first optical unit 210.

[0147] Based on the solutions of the embodiments of this specification, optionally, the first optical unit 210 and the second optical unit 220 in the optical unit assembly 200 can be molded separately and then assembled, that is, the relative positions of the first optical unit 210 and the second optical unit 220 can be fixed by assembly. Alternatively, the first optical unit 210 and the second optical unit 220 can also be integrally molded, specifically, a connecting structure 230 can be formed between the first optical unit 210 and the second optical unit 220.

[0148] Figures 27 to 30 illustrate an example of an optical unit assembly 200 in which the first optical unit 210 and the second optical unit 220 are integrally formed. In practical applications, a connecting structure 230 between the first optical unit 210 and the second optical unit 220 can be formed between a first optical unit block formed by a plurality of the first optical units 210 and a second optical unit block formed by a plurality of the second optical units 220. More specifically, the connecting structure 230 can be formed on at least one of the upper side, lower side, left side, or right side between the first and second optical unit blocks.

[0149] Based on the solution of the embodiment of this specification, compared with the traditional solution, the number of refractive surfaces that the light passes through is reduced, and the light utilization efficiency is higher. As a result, the structure is simple and efficient, and the light channel and the light output surface can be set smaller. In addition, the focus of each optical surface in the optical unit group 200 is located at or close to the reflective surface 22, so that the length of the headlight optical element composed of the optical unit group 200 (i.e., the first optical unit 210 and the second optical unit 220) in the front-to-back direction is greatly reduced. Therefore, based on the headlight optical element provided in the embodiment of this specification, the smaller element size can bring higher freedom in the design of the entire lamp shape, while being beautiful and reducing the difficulty of the entire lamp structure design.

[0150] While common automotive light optics on the market are typically over 25mm tall, the optical units provided in the embodiments of this specification are both less than 5mm tall and wide, significantly smaller than conventional solutions. This smaller light-emitting surface reduces the space occupied by the optical components and creates a more aesthetically pleasing appearance, reducing overall lamp structural design complexity and providing greater flexibility in overall lamp styling.

[0151] The vehicle light optical element (optical unit assembly 200) provided in the embodiments of this specification can provide a light shape without a cutoff line, such as Figure 19. In practical applications, the vehicle light optical element (optical unit assembly 200) can be applied to a high beam.

[0152] In at least some embodiments of the present specification, a cutoff line structure may be further provided in the first optical unit 210 of the optical unit assembly 200 to form a light pattern with a cutoff line, such as shown in Figures 20 and 21. In practical applications, the vehicle light optical element (optical unit assembly 200) may be applied to high beams, front fog lights, cornering lights, or auxiliary turn signals, etc.

[0153] In the embodiments of this specification, the cut-off line structure (including the first cut-off line structure and the second cut-off line structure) may specifically refer to a structure for forming a light-shaped cut-off line in a light shape.

[0154] In addition, in combination with Figures 19 to 23 and Figures 8 to 16, it can be seen that, optionally, the light-collecting structure 2 in the optical unit group 200 may also include a first cut-off line structure located on the reflective surface 22, and the first cut-off line structure is constructed to destroy the local reflective effect of the reflective surface 22; the focus of the first light-emitting surface 7 in the left and right directions is located at the first cut-off line structure; the focus of the first light-emitting surface 7, the second light-incident surface 8 and the second light-emitting surface 9 in the up and down directions is located at the first cut-off line structure.

[0155] Optionally, the light-collecting structure 2 in the optical unit group 200 may further include a cutting surface 23 formed by cutting the reflecting surface 22, and the shape of the first boundary line 201 between the reflecting surface 22 and the cutting surface 23 is adapted to the shape of the light-shaped cut-off line; or optionally, the reflecting surface 22 of the light-collecting structure 2 includes a first area 221 coated with a high-absorption material on the outside and a second area 222 coated with a high-reflection material on the outside, and the shape of the boundary line 202 between the first area 221 and the second area 222 is adapted to the shape of the light-shaped cut-off line; or optionally, the first optical unit 210 also includes a first splicing part 3 located at the rear end of the light-collecting structure 2, the first splicing part 3 is made of a non-transparent material, and the shape of the splicing interface between the first splicing part 3 and the light-collecting structure 2 and the second boundary line 203 of the reflecting surface 22 is adapted to the shape of the light-shaped cut-off line.

[0156] Optionally, the first optical unit 210 in the optical unit group 200 may further include a second cutoff line structure located downstream of the reflecting surface 22 on the optical path, the second cutoff line structure being configured to block part of the light emitted from the reflecting surface 22 toward the first light-emitting surface 7; the focus of the first light-emitting surface 7 in the left and right directions is located at the second cutoff line structure; the focus of the first light-emitting surface 7, the second light-incident surface 8 and the second light-emitting surface 9 in the up and down directions is located at the second cutoff line structure.

[0157] Optionally, the second cutoff line structure includes a groove 4 located in the lower side area of ​​the first optical unit 210; the groove 4 includes a first side 41 close to the light collecting structure 2 and a second side 42 away from the light collecting structure 2, and the shape of the third boundary line 401 between the first side 41 and the second side 42 is adapted to the shape of the light cutoff line.

[0158] Optionally, the first optical unit 210 further includes a second splicing portion 5 located in the groove 4 , and the second splicing portion 5 is made of a non-transparent material.

[0159] Alternatively, at least one of the first side surface 41 and the second side surface 42 may be coated with a highly absorbent material or a highly reflective material. The highly reflective material may include, but is not limited to, aluminum, silver, stainless steel, chromium, and the like. The highly absorbent material may include, for example, black paint. The black paint may contain, for example, pigments (e.g., carbon black, iron oxide, titanium dioxide), solvents (e.g., dryers, thinners, preservatives), resins (e.g., dryers, thinners, preservatives), and additives (e.g., dryers, thinners, preservatives). Examples of black paint are not limited to these, and examples of highly absorbent materials are not limited to black paint. In actual applications, the first side surface 41 and the second side surface 42 may not be coated with any material, and the light path blocking effect may be achieved solely by adjusting the angle. The highly absorbent or highly reflective material can further enhance the light blocking effect.

[0160] Optionally, the second cut-off line structure is arranged at a position adjacent to the light collecting structure 2 .

[0161] Optionally, a reflective coating is coated on the outer side of the reflective surface 22 ; or optionally, a reflector 6 is provided on the outer side of the reflective surface 22 , adjacent to the reflective surface 22 and consistent with the contour of the reflective surface 22 .

[0162] For more relevant features of the cut-off line structure, reference may be made to the corresponding descriptions of other embodiments above.

[0163] In an embodiment of the present specification, a vehicle light module is provided, and the vehicle light module includes a vehicle light optical element.

[0164] Optionally, the headlight optical element includes one or more optical units 100; the front end of the optical unit 100 is provided with a light emitting surface 1, and the rear end is provided with a light receiving structure 2, the light receiving structure 2 includes a light incident surface 21 and a reflecting surface 22, the light receiving structure 2 is constructed to reflect the light incident from the light incident surface 21 through the reflecting surface 22 to form an intermediate light image at the focal plane of the light emitting surface 1, and the light emitting surface 1 is constructed to image the intermediate light image in front of the headlight optical element.

[0165] Alternatively, the headlight optical element includes one or more optical unit groups 200; the optical unit group 200 includes a first optical unit 210 and a second optical unit 220 arranged in sequence along the light path; the rear end of the first optical unit 210 is provided with a light receiving structure 2, and the front end is provided with a first light emitting surface 7; the rear end of the second optical unit 220 is provided with a second light incident surface 8, and the front end is provided with a second light emitting surface 9; the light receiving structure 2 includes a light incident surface 21 and a reflecting surface 22, and the light receiving structure 2 is constructed to reflect the light incident from the light incident surface 21 through the reflecting surface 22 to form an intermediate light image at a common focal plane of the first light incident surface 7, the second light incident surface 8 and the second light emitting surface 9, and the first light emitting surface 7 and the second optical unit 220 are constructed to image the intermediate light image in front of the headlight optical element.

[0166] In actual application, the headlight module further includes a light source corresponding to the light receiving structure 2 . The light source is fixed to the light incident surface 21 of the light receiving structure 2 . The light emitted by the light source enters the interior of the headlight optical element through the light incident surface 21 .

[0167] In an embodiment of the present specification, a vehicle is provided, comprising a headlight module, wherein the headlight module comprises the headlight optical element described in the foregoing embodiment.

[0168] In actual application, the vehicle can specifically be a motor vehicle, which may include but is not limited to a car, a motorcycle, an electric vehicle, a tram or trolleybus, an agricultural transport vehicle, etc. This application does not impose specific restrictions on the type of vehicle.

[0169] One or more embodiments of this specification can achieve at least the following beneficial effects:

[0170] First, the provided headlight optics feature a smaller light-emitting surface (LES), with the height and width of a single optical unit reduced to less than 5mm. The number of units required for full functionality depends on the light source power and beam performance requirements. This smaller LES reduces the space occupied by the headlight optics and creates a more aesthetically pleasing appearance, simplifying overall lamp design and providing greater flexibility in overall styling.

[0171] Second, by reducing the number of parts in the current common headlight module solutions (for example, an integrated thick-walled lens realizes the lighting function of the headlight module), it not only has lower material costs, but also can reduce assembly links, reduce assembly difficulty, and increase production speed. At the same time, fewer parts means fewer component tolerances and assembly tolerances, which can improve the quality and performance stability of the headlight module and the headlight.

[0172] Third, when integrally formed into an independent optical element, the light-emitting surface of the provided headlight optical element has more appearance possibilities. In the current mainstream headlight modules, the light-emitting surface is usually a smooth curved surface, and the frame is usually circular or flat square. In the embodiments of this specification, the surface of the light-emitting surface can be constructed as a grid pattern, horizontal stripe pattern, vertical stripe pattern, diamond pattern, polygonal pattern, other special-shaped patterns, etc., and the outline of the light-emitting surface can be an overall circle, square, diamond, polygon, other special shapes, etc. In addition, the light-emitting surface of the headlight optical element of the embodiments of this specification can protrude from the decorative frame in the front-to-back direction or be wrapped in the decorative frame.

[0173] Fourth, when the first optical element and the second optical element are formed separately, it is possible to achieve a designated optical function while ensuring a simple appearance of the optical element.

[0174] The foregoing description is based on specific embodiments of this specification. Other embodiments are within the scope of the appended claims. The foregoing description is merely an example of the present application and is not intended to limit the present application. Various modifications and variations are apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the claims of this application.

Claims

1. A vehicle lighting optical component, characterized in that, The vehicle lamp optical element includes one or more optical units (100); a light-emitting surface (1) is provided at the front end of the optical unit (100), and a light-receiving structure (2) is provided at the rear end. The light-receiving structure (2) includes a light-incident surface (21) and a reflecting surface (22). The light-receiving structure (2) is configured to form an intermediate light image at the focal plane of the light-emitting surface (1) after reflecting the light incident from the light-incident surface (21) through the reflecting surface (22), and the light-emitting surface (1) is configured to image the intermediate light image in front of the vehicle lamp optical element; A reflective coating is coated on the outer side of the reflecting surface (22); alternatively, a reflector (6) adjacent to the reflecting surface (22) and having the same contour as the reflecting surface (22) is provided on the outer side of the reflecting surface (22).

2. The vehicle lighting optical element according to claim 1, characterized in that, The light-receiving structure (2) further includes a first cut-off line structure located on the reflecting surface (22), and the first cut-off line structure is configured to destroy the reflection effect of a part of the reflecting surface (22); at least one focal point of the light-emitting surface (1) is located at the first cut-off line structure.

3. The vehicle lighting optical element according to claim 2, wherein, The light-receiving structure (2) further includes a cut surface (23) formed by cutting the reflecting surface (22), and the shape of the first junction line (201) between the reflecting surface (22) and the cut surface (23) is adapted to the shape of the light cut-off line; Alternatively, the reflecting surface (22) of the light-receiving structure (2) includes a first region (221) coated with a high-absorbing material on the outer side and a second region (222) coated with a high-reflecting material on the outer side, and the shape of the boundary line (202) between the first region (221) and the second region (222) is adapted to the shape of the light cut-off line; Alternatively, the optical unit (100) further includes a first splicing portion (3) located at the rear end of the light-receiving structure (2), the first splicing portion (3) is made of a non-transparent material, and the shape of the splicing interface between the first splicing portion (3) and the light-receiving structure (2) and the second junction line (203) of the reflecting surface (22) is adapted to the shape of the light cut-off line.

4. The vehicle lighting optical element according to claim 1, characterized in that, The optical unit (100) further includes a second cut-off line structure located downstream of the reflecting surface (22) in the optical path, and the second cut-off line structure is configured to block part of the light rays emitted from the reflecting surface (22) to the light-emitting surface (1); at least one focal point of the light-emitting surface (1) is located at the second cut-off line structure.

5. The vehicle lighting optical element according to claim 4, wherein The second cut-off line structure includes a groove (4) located in the lower side region of the optical unit (100); the groove (4) includes a first side surface (41) close to the light-receiving structure (2) and a second side surface (42) far from the light-receiving structure (2), and the shape of the third junction line (401) between the first side surface (41) and the second side surface (42) is adapted to the shape of the light cut-off line.

6. The vehicle lighting optical element according to claim 5, characterized in that, The optical unit (100) further includes a second splicing portion (5) located in the groove (4), and the second splicing portion (5) is made of a non-transparent material; Or At least one of the first side surface (41) and the second side surface (42) is coated with a high-absorbing material or a high-reflecting material.

7. The vehicle lighting optical element according to claim 5, characterized in that, The second cut-off line structure is disposed at a position adjacent to the light-receiving structure (2).

8. A vehicle lighting optical component, characterized in that, The vehicle lamp optical element includes one or more optical unit groups (200); the optical unit group (200) includes a first optical unit (210) and a second optical unit (220) sequentially arranged along the optical path; a light-receiving structure (2) is disposed at the rear end of the first optical unit (210), and a first light-emitting surface (7) is disposed at the front end; a second light-incident surface (8) is disposed at the rear end of the second optical unit (220), and a second light-emitting surface (9) is disposed at the front end; the light-receiving structure (2) includes a light-incident surface (21) and a reflecting surface (22), and the light-receiving structure (2) is configured to form an intermediate light image at a common focal plane of the first light-emitting surface (7), the second light-incident surface (8), and the second light-emitting surface (9) after reflecting the light incident from the light-incident surface (21) by the reflecting surface (22), and the first light-emitting surface (7) and the second optical unit (220) are configured to image the intermediate light image in front of the vehicle lamp optical element; A reflective coating is coated on the outer side of the reflecting surface (22); alternatively, a reflector (6) adjacent to the reflecting surface (22) and having the same contour as the reflecting surface (22) is disposed on the outer side of the reflecting surface (22).

9. The vehicle lighting optical element according to claim 8, characterized in that, The first light-emitting surface (7) is configured to control the lateral distribution of light.

10. The vehicle lighting optical element according to claim 9, characterized in that, The first light-emitting surface (7) includes one or more optical surfaces configured to adjust the propagation direction of light in the left-right direction.

11. The vehicle lighting optical element according to claim 9, characterized in that, The first light-emitting surface (7), the second light-incident surface (8), and the second light-emitting surface (9) are configured to jointly control the vertical distribution of light.

12. The vehicle lighting optical element according to claim 11, wherein, At least one of the first light-emitting surface (7), the second light-incident surface (8), and the second light-emitting surface (9) includes one or more optical surfaces configured to adjust the propagation direction of light in the up-down direction.

13. The vehicle lighting optical element according to claim 8, characterized in that, The first optical unit (210) and the second optical unit (220) are integrally formed.

14. The vehicle lighting optical element according to claim 13, characterized in that, A connection structure (230) is formed between the first optical unit (210) and the second optical unit (220).

15. The vehicle lighting optical element according to claim 8, characterized in that, The light-receiving structure (2) further includes a first cut-off line structure located on the reflecting surface (22), and the first cut-off line structure is configured to destroy the local reflection effect of the reflecting surface (22); the focus of the first light-emitting surface (7) in the left-right direction is located at the first cut-off line structure; the focus of the first light-emitting surface (7), the second light-incident surface (8), and the second light-emitting surface (9) in the up-down direction is located at the first cut-off line structure.

16. The vehicle lighting optical element according to claim 15, characterized in that, The light-receiving structure (2) further includes a cut surface (23) formed by cutting the reflecting surface (22), and the shape of the first intersection line (201) between the reflecting surface (22) and the cut surface (23) is adapted to the shape of the light cut-off line; Alternatively, the reflecting surface (22) of the light collecting structure (2) includes a first region (221) coated with a high-absorbing material on the outside and a second region (222) coated with a high-reflecting material on the outside. The shape of the demarcation line (202) between the first region (221) and the second region (222) is adapted to the shape of the light cutoff line. Alternatively, the first optical unit (210) further includes a first splicing portion (3) located at the rear end of the light collecting structure (2). The first splicing portion (3) is made of a non-transparent material. The shape of the splicing interface between the first splicing portion (3) and the light collecting structure (2) and the second demarcation line (203) of the reflecting surface (22) is adapted to the shape of the light cutoff line.

17. The vehicle lighting optical element according to claim 8, characterized in that, The first optical unit (210) further includes a second cutoff line structure located downstream of the reflecting surface (22) in the optical path. The second cutoff line structure is configured to block a part of the light rays emitted from the reflecting surface (22) towards the first light emitting surface (7). The focal point in the left-right direction of the first light emitting surface (7) is located at the second cutoff line structure. The focal points in the up-down direction of the first light emitting surface (7), the second light incident surface (8), and the second light emitting surface (9) are located at the second cutoff line structure.

18. The vehicle lighting optical element according to claim 17, characterized in that, The second cutoff line structure includes a groove (4) located in the lower side surface region of the first optical unit (210). The groove (4) includes a first side surface (41) close to the light collecting structure (2) and a second side surface (42) far from the light collecting structure (2). The shape of the third demarcation line (401) between the first side surface (41) and the second side surface (42) is adapted to the shape of the light cutoff line.

19. The vehicle lighting optical element according to claim 18, characterized in that, The first optical unit (210) further includes a second splicing portion (5) located in the groove (4). The second splicing portion (5) is made of a non-transparent material. Alternatively, At least one of the first side surface (41) and the second side surface (42) is coated with a high-absorbing material or a high-reflecting material.

20. The vehicle lighting optical element according to claim 18, wherein The second cutoff line structure is disposed at a position adjacent to the light collecting structure (2).

21. A vehicle lamp module, characterized in that, Including the vehicle lamp optical element according to any one of claims 1 to 20.

22. A vehicle, characterized in that, Including the vehicle lamp module according to claim 21.

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