Light guide system, vehicle lamp and vehicle

Abstract

The utility model relates to a light guide system, a vehicle lamp and a vehicle, the light guide system comprises a light guide element, a first collimating element and a second collimating element, the light guide element is provided with a first light incident surface and a second light incident surface, the area of the first light incident surface is larger than that of the second light incident surface, the first collimating element refracts and reflects a light beam to collimate the light beam, and the second collimating element is used for collimating the light beam. The collimated light beam enters the light guide element from the first light incident surface, so that the light can be distributed in the light guide element in a more uniform and ordered manner. The second collimating element refracts the light beam to collimate the light beam, the collimated light beam enters the light guide element from the second light incident surface, the second collimating element with a smaller size adjusts the light into collimated light through refraction, and the collimated light emitted to the second light incident surface does not have a transition zone. The light can be distributed in the light guide element in a more uniform and ordered mode, the visual effect is improved, and meanwhile the energy transmission efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a light guide system, a vehicle lamp and a vehicle. BACKGROUND

[0002] In the field of vehicles, a vehicle lamp usually comprises a light guide element, a light source and a collimating element, the light guide element has a first light entrance surface with a larger area and a second light entrance surface with a smaller area, and the collimating element is used to refract and reflect the light beam emitted by the light source to achieve collimation of the light beam. In the related art, a plurality of collimating elements are usually provided, so that the plurality of collimating elements are respectively arranged corresponding to the first light entrance surface and the second light entrance surface, and a plurality of light sources are respectively arranged corresponding to the first light entrance surface and the second light entrance surface after collimation by the plurality of collimating elements. However, when the collimating element is arranged corresponding to the second light entrance surface with a smaller area, the size of the collimating element needs to be relatively small. When the light ray is refracted and reflected by the small collimating element to achieve collimation of the light beam, there will be a transition zone between the refracted light ray and the reflected light ray, which leads to poor uniformity of the light ray after collimation and low energy utilization rate of the light source. Therefore, the visual effect of the vehicle lamp will be affected. SUMMARY

[0003] The embodiments of the present application provide a light guide system, a vehicle lamp and a vehicle, which are aimed at solving the problem in the related art that when a small collimating element is used to refract and reflect a light ray to achieve collimation of the light beam, there will be a transition zone between the refracted light ray and the reflected light ray, which leads to poor uniformity of the light ray after collimation and low energy utilization rate of the light source, and therefore the visual effect of the vehicle lamp will be affected.

[0004] In order to achieve the above-mentioned purpose, according to a first aspect of the present application, a light guide system is provided, comprising:

[0005] a light guide element having a first light entrance surface and a second light entrance surface, the area of the first light entrance surface being larger than the area of the second light entrance surface;

[0006] a first collimating element arranged corresponding to the first light entrance surface, the first collimating element being used to refract and reflect a light beam to achieve collimation of the light beam;

[0007] a second collimating element arranged corresponding to the second light entrance surface, the second collimating element being used to refract a light beam to achieve collimation of the light beam.

[0008] Optionally, the area of the first light entrance surface is S1, and the area of the second light entrance surface is S2, wherein 1.5≤S1 / S2≤5.

[0009] Optionally, 0<S2≤80mm 2 .

[0010] Optionally, a length from a center to an edge of the first light-in surface is L1 along the first direction.

[0011] A number of the first collimating elements corresponding to the first light-in surface is N1, the first collimating elements have first light-out surfaces, and a length from a center to an edge of the first light-out surface is L2 along the first direction, wherein N1≥1 and L1≤N1*L2.

[0012] Optionally, a plurality of the first light-in surfaces are arranged along the first direction; and / or,

[0013] N1 of the first collimating elements are arranged along the first direction, wherein N1≥2.

[0014] Optionally, 8mm≤L2≤12.5mm.

[0015] Optionally, L1≥9mm.

[0016] Optionally, the first collimating elements comprise total internal reflection lenses; and / or,

[0017] The second collimating elements comprise cylindrical lenses or collimating lenses.

[0018] Optionally, a length from a center to an edge of the second light-in surface is L3 along the first direction.

[0019] A number of the second collimating elements corresponding to the second light-in surface is N2, the second collimating elements have second light-out surfaces, and a length from a center to an edge of the second light-out surface is L4 along the first direction, wherein N2≥1 and L3≤N2*L4.

[0020] Optionally, a plurality of the second light-in surfaces are arranged along the first direction; and / or,

[0021] N2 of the second collimating elements are arranged along the first direction, wherein N2≥2.

[0022] Optionally, 3mm≤L4≤6mm.

[0023] Optionally, L3≥3.5mm.

[0024] Optionally, a number of the first collimating elements corresponding to the first light-in surface is N1 along the first direction, the first collimating elements have first light-out surfaces, and a length from a center to an edge of the first light-out surface is L2 along the first direction.

[0025] The number of the second collimating elements corresponding to the second light-in surface along the first direction is N2, the second collimating elements have a second light-out surface, and the distance from the center to the edge of the second light-out surface along the first direction is L4, wherein N1≥1, N2≥1, and N1*L2≥N2*L4.

[0026] Optionally, the light beam collimated in the light guide element has a light-emitting half-angle of θ1, wherein 0°≤θ1≤10°.

[0027] Optionally, a gap d is provided between the second collimating element and the light guide element, wherein d≥1mm.

[0028] Optionally, the first collimating element is provided on the light guide element; and / or,

[0029] The second collimating element is provided on the light guide element.

[0030] Optionally, at least one of the first collimating element and the second collimating element is integrally provided with the light guide element.

[0031] Optionally, a connecting frame is further provided, and at least one of the first collimating element and the second collimating element is connected to the light guide element through the connecting frame.

[0032] Optionally, the first collimating element is integrally provided with the light guide element, and the second collimating element is connected to the light guide element through the connecting frame.

[0033] According to a second aspect of the present application, a vehicle lamp is provided, comprising the light guide system and the light source assembly as described above, and the light source assembly is configured to emit light beams to the first collimating element and the second collimating element respectively.

[0034] Optionally, the light source assembly comprises a first light source and a second light source, the first light source is arranged on a side of the first collimating element away from the first light-in surface, and the second light source is arranged on a side of the second collimating element away from the second light-in surface.

[0035] Optionally, the light-emitting angle of the first light source and / or the second light source is θ2, wherein -60°≤θ2≤60°.

[0036] According to a third aspect of the present application, a vehicle is further provided, comprising the vehicle lamp as described above.

[0037] The light guide system of the embodiment of the present application, according to the area size difference of the first light inlet surface and the second light inlet surface, respectively corresponds to set the light collector and the lens, the light collector refracts and reflects the light beam emitted by the first light source to realize the collimation of the light beam, the collimated light beam is suitable for entering the light guide element from the first light inlet surface, so that the light can be distributed in a more uniform and orderly manner inside the light guide element, improving the visual effect. The lens is used to refract the light beam emitted by the second light source to realize the collimation of the light beam, and the collimated light beam is suitable for entering the light guide element from the second light inlet surface. Since the area of the second light inlet surface is smaller than the size of the first light inlet surface, the size of the corresponding lens is also smaller. The small size lens adjusts the light to collimated light by refraction, and the collimated light beam does not have a transition zone, so that the collimated light beam has good uniformity, and the light can be distributed in a more uniform and orderly manner inside the light guide element, improving the visual effect, and improving the light energy utilization rate of the small area second light inlet surface.

[0038] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0040] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0041] Figure 1 is a structural schematic diagram of a light guide system provided in an exemplary embodiment of the present disclosure;

[0042] Figure 2 is Figure 1 is a front view of the light guide element shown in the figure;

[0043] Figure 3 is a structural schematic diagram of a vehicle lamp (partial structure) provided in an exemplary embodiment of the present disclosure;

[0044] Figure 4 is Figure 3 is a front view of the vehicle lamp shown in the figure;

[0045] Figure 5 is a structural schematic diagram of a first light source and a first collimating element provided in an exemplary embodiment of the present disclosure.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100. Light guiding system; 10. Light guiding element; 11. First light-incident surface; 12. Second light-incident surface; 20. First collimating element; 21. First light-exiting surface; 30. Second collimating element; 31. Second light-exiting surface; 210. First light source; 220. Second light source. Detailed Implementation

[0048] 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 protection scope of this application.

[0049] In related technologies, when a collimating element is used to collimate a light beam emitted from a light source by refraction and reflection, and the collimating element is set to a second light-incident surface with a small area, the collimating element with a small size has poor collimation of the light, resulting in poor uniformity of the light beam after collimation by the collimating element and incident on the second light-incident surface. Usually, in order to improve uniformity, the size of the collimating element is much larger than the area of ​​the second light-incident surface with a small area. This will cause light energy loss, low light source utilization, and thus increase the heat power consumption of the system.

[0050] This application provides a light guiding system 100. Please refer to [link / reference]. Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the light guide system 100 provided in an exemplary embodiment of this disclosure; Figure 2 yes Figure 1 The image shows a front view of the light guide element 10. The light guiding system 100 includes the light guide element 10, the first collimating element 20, and the second collimating element 30.

[0051] The light guide element 10 has a first light-incident surface 11 and a second light-incident surface 12, and the area of ​​the first light-incident surface 11 is larger than the area of ​​the second light-incident surface 12.

[0052] It should be noted that the shapes of the first light-incident surface 11 and the second light-incident surface 12 can be set as needed. In one embodiment, the shapes of the first light-incident surface 11 and the second light-incident surface 12 can be regular shapes, such as rectangles, circles, squares, equilateral triangles, or regular polygons. In another embodiment, the shapes of the first light-incident surface 11 and the second light-incident surface 12 can be irregular shapes, such as... Figure 2The width of the first light-incident surface 11 increases and then decreases along its length. The width of the second light-incident surface 12 gradually decreases and then gradually increases along its length. Specifically, this application does not limit the shape of the first light-incident surface 11 and the second light-incident surface 12.

[0053] In the light guide element 10, light enters from the incident surface and propagates within the element. The manner and efficiency of light entry vary depending on the area of ​​the incident surface. A larger first incident surface 11 allows it to receive more light, thus increasing the brightness at the corresponding location on the light guide element 10. The large area of ​​the first incident surface 11 ensures uniform light distribution over a wider area, while the smaller area of ​​the second incident surface 12 can be used to achieve specific light focusing or guiding effects. The difference in area between the first and second incident surfaces 11 and 12 can achieve different lighting and visual effects with the light guide element 10.

[0054] The first collimating element 20 is disposed corresponding to the first light-incident surface 11. The first collimating element 20 is used to refract and reflect the light beam to achieve collimation. The collimated light beam is suitable for entering the light guide element 10 from the first light-incident surface 11. Through the collimation effect of the first collimating element 20, the light can be distributed more uniformly and orderly within the light guide element 10. This helps to achieve specific lighting and visual effects, such as improving the nighttime visibility of vehicles or creating specific atmospheric effects. The collimated light beam can reduce fluctuations and interference during light transmission, thereby improving the stability and reliability of the optical system.

[0055] It should be noted that the arrangement of the first collimating element 20 corresponding to the first light-incident surface 11 does not limit the connection relationship between the first collimating element 20 and the light guide element 10. It is only necessary to ensure that the light beam emitted from the first collimating element 20 can illuminate the first light-incident surface 11. The arrangement of the first collimating element 20 corresponding to the first light-incident surface 11 includes, but is not limited to, the arrangement direction along the first collimating element 20 and the light guide element 10, provided that the orthographic projection of the first collimating element 20 is located on the first light-incident surface 11. Furthermore, when light emitted from the light source enters the first collimating element 20, the first collimating element 20 refracts light at small angles and reflects light at large angles, ultimately achieving collimation of the light emitted from the light source. The collimated beam can utilize the light emitted from the light source more effectively, reducing light scattering and waste. The collimated beam then enters the first light-incident surface 11.

[0056] The second collimating element 30 is disposed corresponding to the second light-incident surface 12. The second collimating element 30 refracts the light beam to achieve collimation, and the collimated beam is suitable for entering the light guide element 10 from the second light-incident surface 12. Through the refraction of the second collimating element 30, diverging light rays can be converted into approximately parallel light rays, thereby improving light utilization and transmission efficiency. This helps reduce light waste and scattering, improving the overall luminous efficiency of the optical system. The collimated beam can be distributed more uniformly and orderly within the light guide element 10, which helps achieve specific lighting and visual effects, such as improving the brightness and uniformity of the illuminated area. The refraction of the second collimating element 30 reduces light fluctuations and interference during transmission, thereby improving the stability and reliability of the optical system. This helps ensure that the optical system maintains stable performance under various environmental conditions.

[0057] It should be noted that the arrangement of the second collimating element 30 corresponding to the second incident surface 12 does not limit the connection relationship between the second collimating element 30 and the light guide element 10; it only requires ensuring that the light beam emitted from the second collimating element 30 can illuminate the second incident surface 12. The arrangement of the second collimating element 30 corresponding to the second incident surface 12 includes, but is not limited to, the arrangement along the direction of the second collimating element 30 and the light guide element 10, provided that the orthographic projection of the second collimating element 30 is located on the second incident surface 12. Furthermore, a collimated beam refers to a beam with a very small beam divergence angle, therefore the beam radius does not change significantly after a certain propagation distance. The second collimating element 30, through its special shape and optical properties, can refract divergent light into approximately parallel light, thereby achieving beam collimation. The second collimating element 30 is designed to correspond to the second incident surface 12, meaning that the position, shape, and size of the second collimating element 30 are determined based on the characteristics of the second incident surface 12. In this way, when the second collimating element 30 refracts the light beam, the collimated light beam can enter the light guide element 10 from the second light incident surface 12.

[0058] The light guiding system 100 of this application embodiment is provided with a first collimating element 20 and a second collimating element 30 respectively, depending on the different areas of the first light-incident surface 11 and the second light-incident surface 12. The first collimating element 20 reflects and refracts the light beam to achieve collimation of the light beam. The collimated light beam is suitable to enter the light guiding element 10 from the first light-incident surface 11, so that the light can be distributed in a more uniform and orderly manner inside the light guiding element 10, thereby improving the visual effect. The second collimating element 30 is used to refract the light beam to achieve collimation. The collimated light beam is suitable for entering the light guide element 10 from the second light-incident surface 12. Since the area of ​​the second light-incident surface 12 is smaller than the size of the first light-incident surface 11, the size of the corresponding second collimating element 30 will also be smaller. The smaller second collimating element 30 adjusts the light to collimated light through refraction. The collimated light beam that hits the second light-incident surface 12 will not have a transition band, so that the collimated light beam has better uniformity. This allows the light to be distributed in a more uniform and orderly manner inside the light guide element 10, improving the visual effect and improving the light energy utilization rate of the smaller area of ​​the second light-incident surface 12.

[0059] Furthermore, since the final shape of the first collimating element 20 and the second collimating element 30 is determined by the shape of the light guide element 10, the first collimating element 20 and the second collimating element 30 need to be cut. In some complex designs of the first collimating element 20 and the second collimating element 30 with narrow light-incident surfaces or curved structures, excessive cutting of the first collimating element 20 and the second collimating element 30 will inevitably result in low light efficiency of the entire light guide system 100. In this application, the second light-emitting surface 31 of the second collimating element 30 is set to be small and corresponds as closely as possible to the second light-incident surface 12. This results in less cutting of the second collimating element 30, allowing more energy to enter the light guide element, thereby improving the light transmission efficiency of the light guide element 10, avoiding light source waste, improving light efficiency, and achieving better collimation, making the light beam incident on the second light-incident surface 12 more uniform.

[0060] In some embodiments, the area of ​​the first light-incident surface 11 is S1, and the area of ​​the second light-incident surface 12 is S2, wherein 1.5≤S1 / S2≤5. This makes the area of ​​the first light-incident surface 11 much larger than the area of ​​the second light-incident surface 12. Within this range, if the first collimating element 20 is provided corresponding to the second light-incident surface 12, and the light beam is collimated by reflecting and refracting the light beam through the first collimating element 20, there is a transition zone between the reflected light and the refracted light, resulting in poor uniformity of the light beam collimated by the first collimating element 20 and the existence of a dark circle problem.

[0061] It should be noted that the values ​​of S1 / S2 can be set as needed. For example, S1 / S2 can be 1.5, 1.8, 2, 2.5, 3, 3.5, 4, 4.5, or 5, etc. Specifically, this application does not limit the values ​​of S1 / S2.

[0062] In some embodiments, 0 <S2≤80mm 2 Thus, if a first collimating element 20 is provided corresponding to the second incident surface 12, and the beam is collimated by reflecting and refracting the beam through the first collimating element 20, there is a transition zone between the reflected and refracted light rays, resulting in poor homogeneity and a dark ring problem in the beam collimated by the first collimating element 20. When the area of ​​the second incident surface 12 is less than or equal to 80 mm²... 2 When the beam is collimated by the second collimating element 30, the uniformity of the collimated beam is much higher than that of the beam collimated by the first collimating element 20. This not only improves the utilization rate of the corresponding beam but also improves the illumination uniformity of the beam.

[0063] It should be noted that the area of ​​the second light-incident surface 12 can be selected as needed; for example, the area of ​​the second light-incident surface 12 can be 10 mm². 2 15mm 2 20mm 2 25mm 2 30mm 2 35mm 2 40mm 2 46mm 2 50mm 2 55mm 2 60mm 2 65mm 2 70mm 2 75mm 2 Or 80mm 2 Specifically, this application does not limit the value of the area of ​​the second light-receiving surface 12.

[0064] In some embodiments, the length from the center to the edge of the first light-incident surface 11 along the first direction is L1; the number of first collimating elements 20 corresponding to each first light-incident surface 11 is N1, and the first collimating element 20 has a first light-emitting surface 21, the length from the center to the edge of the first light-emitting surface 21 along the first direction is L2, wherein N1≥1 and L1≤N1*L2, thus ensuring that the first light-emitting surfaces 21 of N1 first collimating elements can cover the first light-incident surface 11, so that the light entering from the first light-incident surface 11 will be captured by the first collimating element 20 and transmitted along a predetermined path, thereby avoiding light leakage problems and improving light energy utilization.

[0065] It should be noted that the length L2 of the first light-emitting surface 21 of the first collimating element 20 is designed according to the length L1 of the first light-incident surface 11, so that exactly 10 first collimating elements 20 completely fill all the first light-incident surfaces 11. If N < 10, in order to fill all the first light-incident surfaces 11, the length L2 of the first light-emitting surface 21 of the first collimating element 20 needs to be increased, which will cause a waste of light energy at the first light-incident surface 11. Appropriately increasing the number of first collimating elements 20 and increasing the overlapping area can improve the uniformity of illumination, but the number should not be too large, as too many will cause waste of the device.

[0066] Reference Figure 1 and Figure 2 In some embodiments, multiple first light-incident surfaces 11 are provided and arranged along a first direction, which can significantly expand the total receiving area of ​​light-incident surfaces. This means that the light guide system 100 can capture more light from different directions, thereby improving the light capture efficiency and light energy utilization.

[0067] N1 first collimating elements 20 are arranged along the first direction, where N1≥2. Thus, one first light-incident surface 11 corresponds to multiple first collimating elements 20. The synergistic effect of multiple first collimating elements 20 can more effectively capture and collimate light from different directions, thereby enhancing the light-gathering effect, enabling more light to be effectively collected and collimated, reducing light loss and scattering, and enabling more light energy to be effectively utilized, thus improving the efficiency of the entire light guiding system 100.

[0068] It should be noted that in some embodiments, multiple first light-incident surfaces 11 may be provided, with each first light-incident surface 11 corresponding to one first collimating element 20. In another embodiment, there may be only one first light-incident surface 11, but one first light-incident surface 11 may correspond to multiple first collimating elements 20. In other embodiments, there may be multiple first light-incident surfaces 11, and one first light-incident surface 11 may correspond to multiple first collimating elements 20. Specifically, this application does not limit this aspect.

[0069] In some embodiments, 8mm ≤ L2 ≤ 12.5mm. When L2 is within this range, it ensures that the light rays are not excessively divergent or concentrated after passing through the first collimating element 20, thereby guaranteeing good imaging quality or illumination effect. When L2 is in the range of 8mm to 12.5mm, the first collimating element 20 is neither too large, which would increase manufacturing difficulty, nor too small, which would easily lead to errors during assembly.

[0070] It should be noted that the length from the center to the edge of the first light-emitting surface 21 can be set as needed. For example, the length from the center to the edge of the first light-emitting surface 21 can be 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, or 12.5mm. Specifically, this application does not limit the size of the first light-emitting surface 21.

[0071] In some embodiments, L1 ≥ 9 mm. Since the size of the first collimating element 20 corresponds to the size of the first light-incident surface 11, when the length from the center to the edge of the first light-incident surface 11 is less than 9 mm, the corresponding size of the first collimating element 20 will be too small. The light rays collimated by the smaller-sized first collimating element 20 will have dark circles when incident on the first light-incident surface 11, and the collimation and uniformity of the light rays will be poor. When the length from the center to the edge of the first light-incident surface 11 is greater than or equal to 9 mm, the size of the first collimating element 20 corresponding to the first light-incident surface 11 is ensured to be appropriate, so that the light rays collimated by the appropriately sized first collimating element 20 and incident on the first light-incident surface 11 are evenly distributed, improving the visual effect. When the length from the center to the edge of the first light-incident surface 11 is greater than or equal to 9 mm, the first light-incident surface 11 will not be too small, thus avoiding manufacturing difficulties.

[0072] It should be noted that the length from the center to the edge of the first light-incident surface 11 can be set as needed. For example, the length from the center to the edge of the first light-incident surface 11 can be 9mm, 10mm, 11mm, 12mm, 13mm, or 15mm, etc. Specifically, this application does not limit the length from the center to the edge of the first light-incident surface 11.

[0073] Reference Figure 5 , Figure 5This is a schematic diagram of the structure of the first light source and the first collimating element provided in an exemplary embodiment of this disclosure. In some embodiments, the first collimating element 20 includes a total internal reflection lens. The incident surface of the total internal reflection lens is designed with a specific curvature and angle to refract light rays from different directions, causing them to propagate in the same direction. This refraction helps to collimate a portion of the light from the first light source 210. After initial refraction, the light rays enter the total internal reflection lens. If the incident angle is greater than a critical angle, they will undergo total internal reflection on the reflecting surface of the lens. This reflection further enhances the directionality of the light rays, achieving collimation of another portion of the light from the first light source 210. Through the combined effect of refraction and total internal reflection, the total internal reflection lens can collimate light rays from different directions into parallel or approximately parallel rays. The total internal reflection lens can efficiently collect and focus light, reducing light scattering and loss. The total internal reflection lens can achieve uniform light distribution, which helps to avoid uneven brightness in the illuminated area and improve lighting quality.

[0074] Reference Figure 3 , Figure 3 This is a schematic diagram of the structure of a vehicle lamp (partial structure) provided in an exemplary embodiment of this disclosure. In some embodiments, the second collimating element 30 includes a cylindrical lens or a collimating lens. When the second collimating element 30 includes a cylindrical lens, the surface shape of the cylindrical lens is cylindrical, meaning it has curvature in one direction and remains flat in the direction perpendicular to that direction. This special shape allows the cylindrical lens to focus or diverge light only in one direction, without affecting light perpendicular to that direction, or it may have different curvatures in two directions, focusing or diverging light parallel and perpendicular to that direction to different degrees. When light emitted from the second light source 220 passes through the cylindrical lens, the light is refracted in the curvature direction of the second collimating element 30, and the light propagates along the axial direction of the second collimating element 30, forming a parallel beam or approximately parallel beam, thereby achieving collimation of the light emitted from the second light source 220. Because the directionality of the light is significantly improved after refraction by the cylindrical lens, the light propagates more concentratedly along the axial direction of the second collimating element 30, reducing the generation of scattered and stray light.

[0075] When the second collimating element 30 includes a collimating lens, which is an optical device capable of making a light beam parallel, the directionality of the light emitted from the second light source 220 is significantly improved after being refracted by the collimating lens. The light propagates more parallel to the second incident surface 12, reducing the generation of scattered and stray light. The collimating lens can eliminate or reduce the divergence angle of the light beam, making the light beam more focused and regular.

[0076] It should be noted that the second collimating element 30 can be a cylindrical lens. By compressing the different light-emitting surface sizes in the X and Y directions, the half-angle in the horizontal and vertical directions can be controlled to be less than or equal to 10°, which can also achieve efficient beam transmission.

[0077] In some embodiments, along the first direction, the length from the center to the edge of the second light-incident surface 12 is L3, and the number of second collimating elements 30 corresponding to each second light-incident surface 12 is N2. The second collimating element 30 has a second light-emitting surface 31, and the distance from the center to the edge of the second light-emitting surface 31 along the first direction is L4, wherein N2≥1 and L3≤N2*L4. In this way, the second light-emitting surfaces 31 of N2 second collimating elements 30 cover the corresponding second light-incident surface 12, avoiding light leakage and ensuring that the light rays collimated by the corresponding second collimating elements 30 can all be directed to the second light-incident surface 12, thereby improving the light energy utilization rate.

[0078] Reference Figure 1 and Figure 2 In some embodiments, multiple second light-receiving surfaces 12 are provided and arranged along the first direction, which can significantly increase the total receiving area of ​​the light-receiving surface. This means that the light guide system 100 can capture more light from different directions, thereby improving the light capture efficiency and light energy utilization.

[0079] N2 second collimating elements 30 are arranged along the first direction, where N2≥2. Thus, one second incident light surface 12 corresponds to multiple second collimating elements 30. The synergistic effect of multiple second collimating elements 30 can more effectively capture and collimate light from different directions, thereby enhancing the light-gathering effect, enabling more light to be effectively collected and collimated, reducing light loss and scattering, and enabling more light energy to be effectively utilized, thus improving the efficiency of the entire light guiding system 100.

[0080] It should be noted that in some embodiments, multiple second light-incident surfaces 12 may be provided, with each second light-incident surface 12 corresponding to one second collimating element 30. In another embodiment, there may be only one second light-incident surface 12, but one second light-incident surface 12 may correspond to multiple second collimating elements 30. In other embodiments, there may be multiple second light-incident surfaces 12, and one second light-incident surface 12 may correspond to multiple second collimating elements 30. Specifically, this application does not limit this aspect.

[0081] In some embodiments, 3mm ≤ L4 ≤ 6mm. When L4 is within this range, it ensures that the light rays are not excessively divergent or concentrated after passing through the second collimating element 30, thereby guaranteeing good image quality or illumination effect. When L4 is in the range of 3mm to 6mm, the second collimating element 30 is neither too large, increasing manufacturing difficulty, nor too small, making it prone to errors during assembly.

[0082] It should be noted that the length from the center to the edge of the second light-emitting surface 31 can be set as needed. For example, the length from the center to the edge of the second light-emitting surface 31 can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, or 6mm. Specifically, this application does not limit the size of the second light-emitting surface 31.

[0083] In some embodiments, L3 ≥ 3.5 mm. Since the size of the second collimating element 30 corresponds to the size of the second light-incident surface 12, when the length from the center to the edge of the second light-incident surface 12 is less than 3.5 mm, the ability of the second collimating element 30 to collect light is limited. This may result in some light not being effectively focused or directed, thus affecting the lighting effect. When the length from the center to the edge of the second light-incident surface 12 is less than 3.5 mm, on the one hand, the second collimating element 30 requires higher processing precision during manufacturing, which increases manufacturing costs and production difficulty. Due to the small size of the second collimating element 30, it requires more delicate operations during assembly. On the other hand, this may lead to low assembly efficiency and even affect the quality and performance of the final product. When the length from the center to the edge of the second light-incident surface 12 is greater than or equal to 3.5 mm, the second collimating element 30 can collect light more effectively, allowing more light to be focused or directed to the target area, thereby improving the lighting effect. When the length from the center to the edge of the second light-incident surface 12 is greater than or equal to 3.5 mm, on the one hand, the second collimating element 30 can reduce chromatic aberration and aberrations during imaging, improving the clarity and accuracy of the image; on the other hand, the second collimating element 30 can make the light distribution more uniform in the target area, avoiding problems such as uneven brightness or excessively large light spots. When the length from the center to the edge of the second light-incident surface 12 is greater than or equal to 3.5 mm, it makes it easier to control the processing accuracy of the second collimating element 30 during manufacturing and makes the assembly process of the second collimating element 30 simpler and faster, reducing assembly difficulty and cost.

[0084] It should be noted that the length from the center to the edge of the second light-incident surface 12 can be set as needed. For example, the length from the center to the edge of the second light-incident surface 12 can be 3.5mm, 4mm, 5mm, 6mm, 7mm, or 10mm, etc. Specifically, this application does not limit the length from the center to the edge of the second light-incident surface 12.

[0085] In some embodiments, the number of first collimating elements corresponding to the first light-incident surface along the first direction is N1. Each first collimating element has a first light-emitting surface, and the length from the center to the edge of the first light-emitting surface along the first direction is L2. The number of second collimating elements corresponding to the second light-incident surface along the first direction is N2. Each second collimating element has a second light-emitting surface, and the distance from the center to the edge of the second light-emitting surface along the first direction is L4. Where N1 ≥ 1, N2 ≥ 1, and N1 * L2 ≥ N2 * L4, this ensures that the total area of ​​the N1 first light-emitting surfaces 21 is greater than the total area of ​​the N2 second light-emitting surfaces. This design reduces the amount of material and cutting area required during the manufacturing process of the N2 second collimating elements 30, thereby reducing manufacturing costs and complexity. The smaller total area of ​​the N2 second light-emitting surfaces means that the light rays are more concentrated on the corresponding second light-incident surface 12 after passing through the N2 second collimating elements 30. This concentrated illumination reduces light scattering and loss inside the light guide element 10, improving light energy utilization and the energy transfer efficiency of the light guide system 100.

[0086] The light beam emitted by the first light source 210 or the second light source 220, after being collimated by the corresponding first collimating element 20 or second collimating element 30, propagates in the light guide element 10 with a certain divergence angle. The smaller the divergence angle, the better the collimation and transmission effect, and the more energy is transmitted. However, the smaller the collimation divergence angle, the larger the first light-emitting surface or the second light-emitting surface 31 of the first collimating element 20 or the second collimating element 30, and the greater the light transmission loss in the narrower areas of the light guide element 10. In some embodiments, the half-angle of the collimated light beam propagating in the light guide is θ1, where 0°≤θ1≤10°, which means that the light beam maintains a small divergence angle during transmission. When such a light beam propagates in the light guide element 10, it can more effectively utilize the total internal reflection characteristics of the optical fiber, allowing the light to continuously propagate longitudinally along the optical guide core, thereby reducing energy loss caused by refraction and scattering. Therefore, the transmission efficiency of this light beam in the light guide element 10 reaches approximately 95%.

[0087] It should be noted that the emission half-angle refers to half the angle between the two directions in which the light diffuses to its maximum brightness, starting from the center point of the light source. The emission angle reflects the degree of divergence of the light beam. The smaller the emission angle, the smaller the divergence range of the light beam, and the higher the light focusing degree.

[0088] Furthermore, regulations require taillights to have an angle range of -10° to 10° vertically and -20° to 20° horizontally. Using 1mm diameter LED chips, the emission angle is -60° to 60°. The collimated beam half-angle θ1 after passing through the second collimating element 30 is designed to be 5°. The optical spread formula is E = π*S*sin2(θ). Based on the principle of conservation of optical spread, the diameter of the second light-emitting surface 31 of the second collimating element 30 can be calculated to be 10mm. The collimated beam transmitted through the second light-incident surface 12 can effectively improve light energy utilization by 40%. The second collimating element 30 can achieve efficient transmission in a complex-shaped light guide area with a narrow second light-incident surface 12, while also reducing taillight heat dissipation.

[0089] Reference Figure 1 and Figure 3 In some embodiments, a gap d exists between the second collimating element 30 and the light guide element 10, where d ≥ 1 mm. This gap reduces direct contact between the two elements, preventing stress concentration and damage due to material expansion, contraction, or manufacturing errors. When the gap d ≥ 1 mm, interference and diffraction effects between the surfaces of the two elements are reduced, thus decreasing light scattering and energy loss and improving light utilization. A gap d ≥ 1 mm also provides greater flexibility during installation and adjustment, helping to ensure precise alignment and optimal performance of the optical system.

[0090] It should be noted that the second collimating element 30 is a convex lens. Light can only be refracted and collimated by passing through the convex lens and entering the air, thereby improving the performance of the optical system.

[0091] Specifically, the method by which the first collimating element 20 corresponds to the first light-incident surface 11 can be selected as needed. For example, in some embodiments, the first collimating element 20 is disposed on the light guide element 10 and corresponding to the first light-incident surface 11, thereby improving the overall integration of the light guide system 100. In addition, the first collimating element 20 can be tightly integrated with the light guide element 10, which can reduce the loss of light during transmission and enable more light energy to be effectively utilized.

[0092] Of course, in other embodiments, the light guide element 10 can be mounted on the base, and the first collimating element 20 can be mounted on the base, so that the light emitted by the first collimating element 20 can be received by the light guide element 10. Specifically, this application does not limit the manner in which the first collimating element 20 corresponds to the first light incident surface 11.

[0093] The method by which the first collimating element 20 is positioned on the optical guide element 10 can be selected as needed, for example, referring to... Figure 1 and Figure 3 In some embodiments, at least one of the first collimating element 20 and the second collimating element 30 is integrally disposed with the light guide element 10. This integral disposal simplifies the installation and maintenance process. The integral disposal reduces the connection and fixing steps between components, thereby reducing installation difficulty and time costs. Simultaneously, the reduced number of interfaces between components lowers the failure rate due to loose or damaged interfaces, thus reducing maintenance workload. Integrating at least one of the first collimating element 20 and the second collimating element 30 with the light guide element 10 reduces assembly tolerances and better ensures the stability of the light guide system 100. The reduced relative movement or vibration between components lowers the risk of optical performance degradation due to vibration or movement. Integrating at least one of the first collimating element 20 and the second collimating element 30 with the light guide element 10 improves processing efficiency.

[0094] It should be noted that the method by which at least one of the first collimating element 20 and the second collimating element 30 is integrally disposed with the light guide element 10 can be selected as needed. For example, in one embodiment, at least one of the first collimating element 20 and the second collimating element 30 and the light guide element 10 can be integrally formed by injection molding. Of course, in other embodiments, at least one of the first collimating element 20 and the second collimating element 30 and the light guide element 10 can also be bonded together with adhesive. Specifically, this application does not limit this.

[0095] Specifically, the arrangement of the second collimating element 30 corresponding to the second light-incident surface 12 can be selected as needed. For example, in some embodiments, the second collimating element 30 is disposed on the light guide element 10 and corresponding to the second light-incident surface 12, thereby improving the overall integration of the light guide system 100. Furthermore, by tightly integrating the second collimating element 30 with the light guide element 10, light loss during transmission can be reduced, allowing more light energy to be effectively utilized.

[0096] Of course, in other embodiments, the light guide element 10 may be mounted on the base, and the second collimating element 30 may be mounted on the base, so that the light emitted by the second collimating element 30 can be received by the light guide element 10. Specifically, this application does not limit this.

[0097] The method by which the second collimating element 30 is positioned on the light guide element 10 can be configured as needed. For example, in some embodiments, the light guide system 100 further includes a connecting frame, through which at least one of the first collimating element 20 and the second collimating element 30 is connected to the light guide element 10. This significantly enhances the structural stability of the entire light guide system 100. This design reduces the relative movement or displacement between at least one of the first collimating element 20 and the second collimating element 30 and the light guide element 10, avoiding performance degradation caused by factors such as vibration and temperature changes. Precisely connecting at least one of the first collimating element 20 and the second collimating element 30 to the light guide element 10 via the connecting frame ensures a more stable light transmission path between at least one of the first collimating element 20 and the second collimating element 30 and the light guide element 10. This helps reduce light scattering, reflection, and refraction losses, improving light utilization and transmission efficiency. Furthermore, the precise connection also ensures that the light transmission direction between at least one of the first collimating element 20 and the second collimating element 30 and the light guide element 10 remains consistent, thereby improving the overall performance of the optical system.

[0098] It should be noted that the shape of the connector can be set as needed. For example, in one embodiment, the connector can be a cylinder, with one end connected to the light guide element 10, and the second collimating element 30 installed inside the cylinder, with the periphery of the second collimating element 30 connected to the inner wall of the cylinder. In another embodiment, the connector may also have a first connecting end and a second connecting end, with the first connecting end connected to the light guide element 10 and the second connecting end connected to the periphery of the second collimating element 30. Specifically, this application does not limit the specific structure of the connector.

[0099] Specifically, in the embodiments of this application, the first collimating element 20 and the light guide element 10 are integrally disposed, and the second collimating element 30 is connected to the light guide element 10 via a connecting bracket. This integral disposal simplifies the installation and maintenance process of the light guide system 100, reduces the number of connection and fixing steps between components, and lowers the failure rate caused by loose or damaged interfaces, thereby reducing maintenance workload. The connecting bracket significantly enhances the structural stability of the entire light guide system 100. This design reduces the relative movement or displacement between the second collimating element 30 and the light guide element 10, avoiding performance degradation of the second collimating element 30 due to factors such as vibration and temperature changes.

[0100] Reference Figures 3 to 5 , Figure 4 yes Figure 3The image shows a front view of the vehicle headlight. In a second aspect, this application also provides a vehicle headlight including the light guide system 100 as described above and a light source assembly, the light source assembly being used to emit light beams to a first collimating element 20 and a second collimating element 30, respectively. This vehicle headlight possesses all the beneficial effects of the aforementioned light guide system 100, which will not be elaborated upon here.

[0101] In some embodiments, the light source assembly includes a first light source 210 and a second light source 220. The first light source 210 is disposed on the side of the first collimating element 20 opposite to the first light-incident surface 11, and the second light source 220 is disposed on the side of the second collimating element 30 opposite to the second light-incident surface 12. The design of the first light source 210 and the second light source 220 greatly enhances the lighting flexibility of the vehicle lamp, enabling it to adapt to different driving environments and lighting needs. The arrangement of the first light source 210 and the second light source 220 gives the vehicle lamp excellent lighting effect and flexibility, providing better road lighting and warning effects, thereby improving driving safety. At the same time, the unique lighting design also helps to improve vehicle visibility.

[0102] It should be noted that the colors of the light emitted by the first light source 210 and the second light source 220 can be selected as needed. For example, in one embodiment, the colors of the light emitted by the first light source 210 and the second light source 220 can be the same; in another embodiment, the colors of the light emitted by the first light source 210 and the second light source 220 can be different. Specifically, this application does not limit this. Furthermore, the number of the first light source 210 and the second light source 220 can be selected as needed; specifically, this application does not limit this.

[0103] In some embodiments, the emission angle of the first light source 210 and / or the second light source 220 is θ2, where -60°≤θ2≤60°. This means that the light emitted by the first light source 210 and / or the second light source 220 can cover a relatively wide range, ensuring sufficient illumination of the road ahead or the target area. The emission angle of the first light source 210 and / or the second light source 220 being within -60° to 60° allows for a more uniform distribution of light, which helps reduce blind spots, improves lighting quality, and enables drivers to see the road ahead and the surrounding environment more clearly. When the emission angle of the first light source 210 and / or the second light source 220 is within -60° to 60°, light waste and scattering are reduced, thereby improving the efficiency of light energy utilization.

[0104] Thirdly, this application also provides a vehicle including the aforementioned headlights. This vehicle possesses all the beneficial effects of the aforementioned headlights, which will not be elaborated upon herein.

[0105] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0106] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0107] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0108] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0109] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A light guiding system, characterized in that, include: A light guide element has a first light-incident surface and a second light-incident surface, wherein the area of ​​the first light-incident surface is larger than the area of ​​the second light-incident surface; A first collimating element is disposed corresponding to the first incident surface. The first collimating element is used to refract and reflect the light beam to achieve collimation of the light beam. The second collimating element is disposed corresponding to the second incident surface. The second collimating element is used to refract the light beam to achieve collimation of the light beam.

2. The light guiding system according to claim 1, characterized in that, The area of ​​the first light-incident surface is S1, and the area of ​​the second light-incident surface is S2, wherein 1.5 ≤ S1 / S2 ≤ 5.

3. The light guiding system according to claim 2, characterized in that, 0<S2≤80mm 2 。 4. The light guiding system according to claim 1, characterized in that, Along the first direction, the length from the center to the edge of the first light-incident surface is L1; The number of the first collimating elements corresponding to the first incident light surface is N1. The first collimating element has a first light emitting surface, and the length from the center to the edge of the first light emitting surface along the first direction is L2, wherein N1≥1 and L1≤N1*L2.

5. The light guiding system according to claim 4, characterized in that, Multiple first light-incident surfaces are provided and arranged along the first direction; and / or; N1 of the first collimating elements are arranged along the first direction, wherein N1≥2.

6. The light guiding system according to claim 5, characterized in that, 8mm≤L2≤12.5mm.

7. The light guiding system according to claim 5, characterized in that, L1≥9mm.

8. The light guiding system according to any one of claims 1 to 7, characterized in that, The first collimating element includes a total internal reflection lens; and / or, The second collimating element includes a cylindrical lens or a collimating lens.

9. The light guiding system according to any one of claims 1 to 7, characterized in that, Along the first direction, the length from the center to the edge of the second light-incident surface is L3; The number of second collimating elements corresponding to the second incident light surface is N2. The second collimating element has a second light emitting surface. The distance from the center to the edge of the second light emitting surface along the first direction is L4, where N2≥1 and L3≤N2*L4.

10. The light guiding system according to claim 9, characterized in that, Multiple second light-incident surfaces are provided and arranged along the first direction; and / or; N2 second collimating elements are arranged along the first direction, wherein N2≥2.

11. The light guiding system according to claim 9, characterized in that, 3mm≤L4≤6mm.

12. The light guiding system according to claim 9, characterized in that, L3≥3.5mm.

13. The light guiding system according to any one of claims 1 to 7, characterized in that, The number of first collimating elements corresponding to the first incident light surface along the first direction is N1. The first collimating element has a first light emitting surface, and the length from the center to the edge of the first light emitting surface along the first direction is L2. The number of second collimating elements corresponding to the second incident light surface along the first direction is N2. The second collimating element has a second light emitting surface. The distance from the center to the edge of the second light emitting surface along the first direction is L4, where N1≥1, N2≥1, and N1*L2≥N2*L4.

14. The light guiding system according to any one of claims 1 to 7, characterized in that, The collimated light beam is transmitted through the light guide element at a half-angle of θ1, where 0°≤θ1≤10°.

15. The light guiding system according to any one of claims 1 to 7, characterized in that, The second collimating element and the light guide element have a gap d, where d ≥ 1 mm.

16. The light guiding system according to any one of claims 1 to 7, characterized in that, The first collimating element is disposed on the optical guide element; and / or, The second collimating element is disposed on the light guide element.

17. The light guiding system according to claim 16, characterized in that, At least one of the first collimating element and the second collimating element is integrally disposed with the light guide element.

18. The light guiding system according to claim 16, characterized in that, It also includes a connector, through which at least one of the first collimating element and the second collimating element is connected to the optical guide element.

19. The light guiding system according to claim 16, characterized in that, The first collimating element and the light guide element are integrally disposed, and the second collimating element is connected to the light guide element through the connecting frame.

20. A vehicle light, characterized in that, Includes a light guiding system and a light source assembly as described in any one of claims 1 to 19, wherein the light source assembly is used to emit light beams to the first collimating element and the second collimating element, respectively.

21. The vehicle light according to claim 20, characterized in that, The light source assembly includes a first light source and a second light source. The first light source is located on the side of the first collimating element that is away from the first light-incident surface, and the second light source is located on the side of the second collimating element that is away from the second light-incident surface.

22. The vehicle light according to claim 21, characterized in that, The emission angle of the first light source and / or the second light source is θ2, where -60°≤θ2≤60°.

23. A vehicle, characterized in that, Including the vehicle lights as described in any one of claims 20 to 22.

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