Optical system and vehicle lamp comprising same
By optimizing the optical system with thick-walled components, the energy of the LED light source is efficiently collected and distributed, achieving uniform light output over a wide range. This solves the problems of high energy consumption and rising costs in traditional automotive lights, reduces energy consumption and heat dissipation pressure, and simplifies circuit design.
Patent Information
- Application Number
- CN202522324712.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-03
AI Technical Summary
Traditional car lights rely on multiple LED light sources, which leads to high energy consumption, difficulty in heat dissipation, and increased costs.
An optical system is employed to efficiently collect and redistribute the energy emitted by the light source by optimizing the structure of thick-walled components, thereby achieving large-area uniform light output under the drive of a single LED, reducing the number of light sources and increasing the spacing, and simplifying the design of the drive circuit.
While ensuring uniform light output, it significantly reduces energy consumption and heat dissipation pressure, reduces circuit design complexity and manufacturing costs, and improves system reliability.
Smart Images
Figure CN224944638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive lighting technology, and more particularly to an optical system and an automotive lamp including the same. Background Technology
[0002] With the rapid development of automotive lighting technology and consumers' increasing pursuit of lighting effects, production costs and efficiency are also urgent issues for automotive lighting suppliers. In the current solution, light emitted from LEDs passes through collimation structures, thick-walled components, or reflectors before exiting from the light-emitting surface, thereby achieving a uniform light emission effect.
[0003] However, in order to achieve uniform light output, the spacing between light sources needs to be minimized, which increases the number of LEDs, resulting in high energy consumption, severe heat generation, and increased manufacturing costs and circuit design burden. Utility Model Content
[0004] The technical problem this invention aims to solve is: to address the issues of high energy consumption, difficult heat dissipation, and increased costs caused by the reliance on multiple LED light sources in traditional vehicle lights, this invention provides an optical system that optimizes the structure of a thick-walled component. This thick-walled component can efficiently collect and redistribute the energy emitted by the light source, thereby achieving a wide-range uniform light output effect under the drive of a single LED. This increases the spacing between light sources while ensuring uniform light output, reducing the number of LEDs and effectively lowering energy consumption and heat generation, as well as reducing circuit design complexity and manufacturing costs.
[0005] The technical solution adopted by this utility model to solve its technical problem is: an optical system, comprising: A light source, wherein at least one light source is provided for emitting initial light; A thick-walled component includes an incident light end, an exit light end, and at least one total internal reflection unit. The incident light end is disposed in the light exit direction of the light source, the total internal reflection unit is disposed inside the thick-walled component and located in the light exit direction of the incident light end, and the exit light end is disposed in the light exit direction of the total internal reflection unit. in: The light-inlet end is used to receive the initial light from the light source and shape it into a beam shape suitable for transmission by the total internal reflection unit; The total internal reflection unit guides the incident light along a set direction through one or more reflections, thereby expanding the light-emitting area of the thick-walled component. Therefore, the light emitted by the light source undergoes precise shaping processing inside the thick-walled component through the light-incident end and the total internal reflection unit, effectively changing the propagation path and distribution of the light, thus making the light-emitting area of the thick-walled component significantly larger than that of the light-incident end. Compared with traditional solutions, this optical system requires a significantly reduced number of light sources for the same light-emitting area, increases the spacing between adjacent light sources, effectively reduces energy consumption and heat dissipation pressure, simplifies the design of the driving circuit, and improves system reliability.
[0006] Furthermore, let's define the light-emitting direction of the thick-walled component as the forward direction, establish a coordinate system with the forward direction as the x-direction, the direction of the long side of the thick-walled component as the y-axis, and the positive direction of the y-axis pointing to the right; let's define the height direction as the z-axis, and the positive direction of the z-axis pointing upwards; then in this coordinate system: When the light-incident end is located behind the thick-walled component, the total internal reflection unit includes at least a second total internal reflection surface and a third total internal reflection surface. The second and third total internal reflection surfaces are located on both sides of the light-incident end. The second and third total internal reflection surfaces are used to change the propagation direction of part of the light and guide it to the light-out end. The second and third total internal reflection surfaces make the light-out area of the thick-walled component laterally expanded. Thus, through the synergistic effect of the second and third total internal reflection surfaces, the light can achieve multi-path propagation inside the thick-walled component, further extending the coverage range of the beam in the lateral direction, thereby significantly improving the uniformity of illumination and the light-out efficiency without increasing the number of light sources. When the light-incident end is located below the thick-walled component, the total internal reflection unit further includes a total internal reflection surface one, which is positioned in the light-out direction of the light-incident end. The total internal reflection surface one directly reflects a portion of the incident light to the light-out end. The total internal reflection surface two and / or total internal reflection surface three are positioned on the light propagation path of the reflected light from the total internal reflection surface one. Thus, through the synergistic effect of the total internal reflection surface two and the total internal reflection surface three, the remaining light after the reflection by the total internal reflection surface one is collected and subjected to secondary reflection, thereby expanding the light transmission path and coverage within the thick-walled component, thereby improving the light energy utilization efficiency and light output uniformity, and achieving more efficient optical integration.
[0007] Furthermore, the surface containing the first total reflection surface is parallel to the y-axis, intersects the x-axis, and forms an acute angle with the positive x-axis; the surface containing the first total reflection surface intersects the z-axis, and forms an acute angle with the positive z-axis, such that the incident light rays, after being reflected by the first total reflection surface, are deflected along the positive x-axis and tend towards the light-emitting end.
[0008] Furthermore, the first total reflection surface is located between the second and third total reflection surfaces. The angle between the plane of the second total reflection surface and the positive x-axis is acute, and the angle between the plane of the second total reflection surface and the positive y-axis is also acute. This allows light rays that are reflected by the first total reflection surface but not directly projected to the light-emitting end and tending towards the positive y-axis to be reflected again by the second total reflection surface, causing their propagation direction to deflect towards the positive x-axis and tend towards the light-emitting end; thereby expanding the left and right light-emitting width.
[0009] Furthermore, the angle between the surface of the third total reflection surface and the positive x-axis is acute, and the angle between the surface and the negative y-axis is also acute. This is used to perform secondary reflection on light rays that have not been directly projected to the light-emitting end after being reflected by the first total reflection surface and are trending towards the negative y-axis, causing their propagation direction to deflect towards the positive x-axis and tend towards the light-emitting end. Thus, the third total reflection surface and the second total reflection surface are symmetrically arranged on both sides of the first total reflection surface, together forming a three-dimensional spatial light path control structure, further improving the light capture efficiency, effectively balancing the lateral energy distribution of light within the thick-walled component, and thus significantly improving the brightness uniformity of the light-emitting surface.
[0010] Furthermore, the total internal reflection unit is configured in a one-to-one correspondence with the light-incident end; the light-emitting end consists of multiple light-emitting regions integrated on the front surface of the thick-walled component.
[0011] Furthermore, the total reflection unit is provided in multiple ways, and the multiple total reflection units are evenly distributed along the y-axis direction, and a V-shaped through groove is formed between adjacent total reflection units. The two inclined surfaces of the V-shaped through groove respectively constitute total reflection surface two and total reflection surface three. The tip of the V-shaped groove faces the positive x-axis direction, and the V-shaped groove penetrates the end face of the thick-walled part along the z-axis direction. The width of the V-shaped groove remains constant or gradually decreases from one end to the other along the z-axis direction. Thus, the V-shaped groove simplifies the structural design and processing difficulty of the thick-walled part, while improving the heat dissipation effect, thereby enhancing the thermal stability of the thick-walled part under high-power operating conditions.
[0012] Furthermore, the light-incident end is formed by stretching the cross-sectional line of the concentrator along the y-axis direction to enhance the converging ability of the incident light.
[0013] Furthermore, the light-incident end is formed by stretching the cross-section of the nested concentrator along the y-axis, and its cross-section is an asymmetrical free-form surface to adapt to the radiation angle distribution of the light source and achieve efficient light intake; this structure effectively improves the converging ability of the incident light and reduces initial scattering, thereby improving the overall light utilization rate.
[0014] Furthermore, the incident light at the light-incident end is monochromatic or polychromatic, and the corresponding optical design is adapted according to the light-emitting characteristics of the light source.
[0015] Furthermore, the cross-sectional line of the light-incident end has a focal point, and the plurality of focal points constitute the focal line of the light-incident end.
[0016] Furthermore, the light-inlet end, the light-outlet end, the first total reflection surface, the second total reflection surface, and / or the third total reflection surface are provided with light distribution patterns; thereby, the light output can be finely adjusted according to requirements to achieve specific light distribution curves or illumination patterns, thereby improving the flexibility and adaptability of the optical system.
[0017] Furthermore, the incident angles of the total reflection surface one, the total reflection surface two, and the total reflection surface three are all 40-50 degrees to optimize the optical path deflection efficiency and suppress stray light generation. This angle range was determined by ray tracing simulation and can maintain the stability of the total reflection conditions under different incident angles, ensuring efficient light transmission inside the thick-walled component.
[0018] Furthermore, the light source can be an LED light source.
[0019] The beneficial effects of this utility model are that the optical system of this utility model is equipped with a total internal reflection unit to realize multi-path optical path control, so that the light-emitting area of the thick-walled component is significantly larger than the light-incident area of the thick-walled component, thereby realizing the expansion of light intensity distribution. Compared with the traditional solution, the optical system of this utility model requires a significantly reduced number of light sources under the same light-emitting area, effectively reducing energy consumption and heat dissipation pressure, while simplifying the design of the driving circuit and improving the reliability of the system.
[0020] The optical system of this invention optimizes the light input end to efficiently converge the light from the light source and shape it into a beam shape suitable for total internal reflection transmission. Working in conjunction with the total internal reflection unit, it achieves orderly deflection and uniform diffusion of light within the thick-walled component, ultimately realizing large-area, highly uniform illumination output from the light output end. Attached Figure Description
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Figure 1 This is a three-dimensional schematic diagram of the optical system in Embodiment 1.
[0023] Figure 2 yes Figure 1 A side view of the optical system.
[0024] Figure 3 yes Figure 1 A schematic diagram of the optical system viewed from below.
[0025] Figure 4 yes Figure 1 A rear-view schematic diagram of the optical system.
[0026] Figure 5 This is a rear view schematic diagram of the optical system adapted to monochromatic light in Embodiment 2.
[0027] Figure 6 This is a cross-sectional schematic diagram of the light-incident section structure adapted to multi-color light in Embodiment 2.
[0028] Figure 7 This is a top view schematic diagram of a partial structure of the optical system in Embodiment 4.
[0029] Figure 8 yes Figure 7 A cross-sectional view of the structure at section A.
[0030] In the diagram: 11, light-incident end; 12, total internal reflection unit; 121, total internal reflection surface one; 122, total internal reflection surface two; 123, total internal reflection surface three; 13, light-outceasing end; 14, V-shaped through slot. Detailed Implementation
[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0032] Example 1: like Figure 1 As shown, an optical system includes: an LED light source for emitting initial light and an optical component disposed in the light-emitting direction of the light source. In this embodiment, the optical component is a thick-walled component. The light-emitting direction of the thick-walled component is defined as the forward direction. A coordinate system is established with the forward direction as the x-direction, the direction of the long side of the thick-walled component as the y-axis, and the positive direction of the y-axis pointing to the right; the height direction is defined as the z-axis, and the positive direction of the z-axis pointing upwards. Then, in this coordinate system: The front end face of the thick-walled component is the light-emitting end 13. The lower end face of the thick-walled component is uniformly provided with multiple V-shaped through grooves 14 along the y-axis direction. The V-shaped through grooves 14 extend through the upper surface of the thick-walled component along the positive z-axis direction. The V-shaped through grooves 14 divide the thick-walled component into multiple light guides along the y-axis direction. The lower end face of each light guide is provided with a light-incident end 11. The light-incident end 11 is used to receive the initial light from the LED light source and shape it into a beam shape suitable for the total reflection unit 12 to conduct. The light guide is provided with a total reflection unit 12 inside. The total reflection unit 12 is located on the light propagation path of the light-incident end 11. The total internal reflection unit 12 includes at least a first total internal reflection surface 121, a second total internal reflection surface 122, and a third total internal reflection surface 123. The first total internal reflection surface 121 is disposed in the light-emitting direction at the light-incident end, and the first total internal reflection surface 121 directly reflects part of the incident light to the light-emitting end 13. The second total internal reflection surface 122 and / or the third total internal reflection surface 123 are disposed on the light propagation path of the reflected light from the first total internal reflection surface 121, and the second total internal reflection surface 122 and / or the third total internal reflection surface 123 are used to change the propagation direction of another part of the light and guide it to the light-emitting end 13. Thus, through the synergistic effect of the second total internal reflection surface 122 and the third total internal reflection surface 123, the remaining light after the reflection by the first total internal reflection surface 121 is collected and reflected a second time, which expands the light transmission path and coverage within the thick-walled component, thereby improving the light energy utilization efficiency and light emission uniformity, and achieving more efficient optical integration.
[0033] Therefore, the light emitted by a single LED light source is efficiently collected by the light-incident end 11 and guided in the positive z-axis direction. This light is precisely shaped by the total internal reflection unit 12 within the light guide section, causing the light to deflect in the positive x-axis direction and tend towards the light-emitting end 13. This effectively changes the propagation path and distribution state of the light, resulting in the light-emitting area of the thick-walled component being significantly larger than that of the light-incident end 11. Compared with traditional solutions, this optical system requires a significantly reduced number of light sources for the same light-emitting area, increases the spacing between adjacent light sources, effectively reduces energy consumption and heat dissipation pressure, simplifies the design of the drive circuit, and improves system reliability.
[0034] in: Reference Figure 1 , Figure 3 The tip of the V-shaped through groove 14 is parallel to the x-axis and the included angle is acute. The width of the V-shaped through groove 14 extending along the z-axis remains unchanged. The V-shaped through groove 14 simplifies the structural design and processing difficulty of thick-walled parts, while improving the heat dissipation effect, thereby enhancing the thermal stability of thick-walled parts under high-power operating conditions.
[0035] Reference Figures 1-4 The total internal reflection surface 121 is located on the upper surface of the light guide. To ensure that the light incident on this surface meets the critical condition for total internal reflection, the surface of the total internal reflection surface 121 is designed through optical simulation optimization. The surface of the total internal reflection surface 121 intersects the x-axis and z-axis, and the angles with the positive x-axis and the positive z-axis are both acute angles. The surface of the total internal reflection surface 121 is set parallel to the y-axis, so that the total internal reflection surface 121 is tilted at a certain angle. The light incident end 11 efficiently collects and shapes the light source so that the light is incident on the total internal reflection surface 121 at a preset angle. The total internal reflection surface 121 achieves total internal reflection at this incident angle, accurately reflecting the light propagating along the positive z-axis to the direction of the light emitting end 13.
[0036] Reference Figure 3 , Figure 4Total reflection surfaces 122 and 123 are respectively arranged on the inclined surfaces of the sidewall of the light guide section. They are symmetrical about the central plane of the light guide section and are inclined at acute angles to the x-axis and y-axis, and parallel to the z-axis. This symmetrical arrangement allows the light rays that propagate to both sides after being reflected by total reflection surface 121 to act on total reflection surfaces 122 and 123 with nearly equal incident angles, and then be reflected a second time and projected out of the light end 13. By reasonably designing the tilt angle and spatial position of total reflection surfaces 122 and 123, the total reflection condition is always met during multiple reflections, effectively reducing light energy leakage and loss. At the same time, this symmetrical structure makes the light paths on both sides uniformly symmetrical, further improving the symmetry and uniformity of the light intensity distribution on the light-emitting surface and suppressing the formation of bright spots and dark areas. Combined with the guiding effect of the V-shaped through slot 14, the light-emitting end 13 achieves a large-area, highly uniform surface light source output.
[0037] Reference Figure 2 , Figure 4 The light-incident end 11 is formed by stretching the cross-sectional line of the light-concentrator along the y-axis direction. The light-incident end 11 efficiently converges the light emitted by the light source, and the light emitted from the light-incident end 11 propagates along the z-axis direction, thereby ensuring that the light entering the light guide is evenly distributed and has a clear propagation direction, providing stable incident conditions for the subsequent total internal reflection process.
[0038] The incident light directions of total reflection surface 121, total reflection surface 122, and total reflection surface 123 form an angle of 40-50 degrees to optimize the optical path deflection efficiency and suppress stray light generation. This angle range was determined by ray tracing simulation and can maintain the stability of total reflection conditions under different incident angles, ensuring efficient light transmission inside thick-walled components.
[0039] The projection length of the total reflection surface 121 in the x-axis direction is greater than or equal to the projection length of the light-incident end 11 in the x-axis direction, so as to fully cover the beam range emitted from the light-incident end 11 and avoid light overflowing from the side wall of the light guide and causing loss. This design effectively improves the light energy utilization rate and ensures that the light reflected by the total reflection surface 121 is evenly distributed in the propagation path inside the light guide, laying a good foundation for subsequent secondary reflection.
[0040] Furthermore: the cross-sectional line of the light-incident end 11 has a focal point, and the focal points of multiple cross-sectional lines constitute the focal line of the light-incident end 11. The LED light source is placed on or near the focal line to achieve maximum coupling efficiency. The incident light of the light-incident end 11 is monochromatic light, and the corresponding optical design is adapted according to the light-emitting characteristics of the light source. The light-incident end 11, the light-emitting end 13, the first total reflection surface 121, the second total reflection surface 122, and / or the third total reflection surface 123 are provided with corresponding light distribution patterns as required.
[0041] In summary, the light-incident end 11 at a single light guide section efficiently converges the light from the corresponding light source and guides the converged light at a specific angle to the total reflection surface 121. After the first total reflection, some of the light is directly reflected to the center of the light-emitting area corresponding to the light-emitting end 13. The light that is not directly reflected is reflected to the second total reflection surface 122 or the third total reflection surface 123 for secondary reflection and then guided to the edge area of the light-emitting end 13, thereby forming a uniformly distributed imaging area, which is significantly expanded compared to the light-emitting area of the light-incident end 11.
[0042] Thick-walled components with multiple such light guides require fewer light sources for the same light-emitting area compared to traditional thick-walled components, significantly reducing energy consumption and assembly complexity; furthermore, the increased spacing between light sources effectively avoids heat accumulation caused by excessive light source density, improving overall heat dissipation efficiency.
[0043] Example 2: Based on Example 1, a replacement scheme is proposed for the structure of the light input end 11, as follows: The light-incident end 11 is formed by stretching the cross-sectional line of the nested concentrator along the y-axis; the nested concentrator is used to adapt to the radiation angle distribution of the light source and achieve efficient light intake; this structure effectively improves the converging ability of the incident light and reduces initial scattering, thereby improving the overall light utilization rate.
[0044] in: To adapt to monochromatic light, refer to Figure 5 The cross-section of the light-incident end 11 has a focal point, that is, the light-incident end 11 has a focal line; To adapt to multi-color light, refer to Figure 6 The cross-section of the light-incident end 11 has two focal points, namely the first focal point and the second focal point. The two focal points are staggered along the y-axis to correspond to the two LED light sources of different colors, ensuring that different wavelengths of light are focused on their corresponding focal points, thereby improving the coupling efficiency of multicolor light.
[0045] Example 3: To adapt to the inclined shape, based on Example 1, the structure of the thick-walled component is adaptively adjusted. The specific solution is as follows: The length extension direction of the light-emitting end 13 is located in the angle region between the positive x-axis and the positive y-axis, the tip of the V-shaped through groove 14 is located in the angle region between the positive x-axis and the positive y-axis, and the width of the V-shaped through groove 14 extending along the z-axis remains unchanged. The projection length of the total reflection surface 3 123 in the x-axis direction is less than the projection length of the total reflection surface 2 122 in the x-axis direction, so as to match the tilted layout of the light end 13.
[0046] The operation of a single light guide section is as follows: When the total reflection surface 123 forms an acute angle with the positive x-axis and the negative y-axis, the light-incident end 11 at a single light guide section efficiently converges the light from the corresponding light source and guides the converged light into the total reflection surface 121 at a specific angle. After the first total reflection, some light is directly reflected to the center of the light-emitting area corresponding to the light-emitting end 13. The light that is not directly reflected is reflected to the total reflection surface 122 or the total reflection surface 123 for secondary reflection and then guided to the edge area of the light-emitting end 13, thereby forming a uniformly distributed imaging area, which is significantly expanded compared to the light-emitting area of the light-incident end 11.
[0047] Example 4: The difference from Example 1 is as follows: Reference Figure 7 , Figure 8 The front end face of the thick-walled component is the light-emitting end 13. Multiple V-shaped grooves 14 are evenly distributed along the y-axis on the lower end face of the thick-walled component. These V-shaped grooves 14 extend along the positive z-axis and penetrate the upper surface of the thick-walled component. The V-shaped grooves 14 divide the thick-walled component into multiple light-guiding sections along the y-axis. Each light-guiding section has a light-incident end 11 on its rear end face (e.g., ...). Figure 8 As shown, the light-incident end 11 is used to receive the initial light from the LED light source and shape it into a beam shape suitable for the total reflection unit 12 to conduct; the light guide part is provided with a total reflection unit 12, which is arranged on the light propagation path of the light-incident end 11. The total internal reflection unit 12 includes at least a second total internal reflection surface 122 and a third total internal reflection surface 123. The second and third total internal reflection surfaces 122 and 123 are the sidewalls of the light guide section and are located on both sides of the light incident end 11 (e.g., Figure 7 (as shown) Thus, the light source 11 efficiently collects the light from the LED light source and guides it into the total internal reflection unit 12. Some of the light is directly projected to the light output end 13, while the remaining light is reflected in sequence by the second total internal reflection surface 122 or the third total internal reflection surface 123 and then guided to the edge area of the light output end 13, making the light output area of the thick-walled component significantly larger than that of the light source 11. By rationally designing the tilt angle and position of each reflective surface, multiple light rays are spatially superimposed at the light output end 13, significantly improving the uniformity of light output.
[0048] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. An optical system, characterized in that: It includes an incident light end (11) and at least one total reflection unit (12), wherein the total reflection unit (12) is disposed in the light emitting direction of the incident light end (11); in: The light-inlet end (11) is used to receive light and shape it into a beam shape suitable for transmission by the total internal reflection unit (12); The total reflection unit (12) is used to receive the light beam from the light-incident end (11) and to conduct the incident light beam along a set direction through one or more reflections; the total reflection unit (12) shapes the light beam so that the light-emitting area is laterally expanded.
2. The optical system as described in claim 1, characterized in that: The total reflection unit (12) includes at least a second total reflection surface (122) and a third total reflection surface (123). The second total reflection surface (122) and the third total reflection surface (123) are used to change the propagation direction of part of the light so that it is transmitted along a set direction. The second total reflection surface (122) and the third total reflection surface (123) make the light-emitting area of the total reflection unit (12) laterally expanded.
3. The optical system as described in claim 2, characterized in that: The light-incident end (11) and the total reflection unit (12) are disposed on an integrally formed thick-walled component, and the total reflection unit (12) is disposed inside the thick-walled component; The total reflection surface II (122) is used to reflect light rays that deviate from the light emission direction of the thick-walled part, causing their propagation direction to be deflected and tend towards the set direction; The total reflection surface three (123) is used to reflect light rays that deviate from the light emission direction of the thick-walled part, causing their propagation direction to deflect and tend towards the set direction.
4. The optical system as described in claim 3, characterized in that: The total reflection unit (12) further includes a total reflection surface one (121), which is disposed in the light-emitting direction of the light-incident end (11). The total reflection surface two (122) and / or the total reflection surface three (123) are located on the light propagation path of the reflected light of the total reflection surface one (121). The total reflection surface one (121) is used to perform the initial reflection of the light from the light-incident end (11) and adjust the incident angle of the light to match the reflection requirements of the total reflection surface two (122) and the total reflection surface three (123).
5. The optical system as described in claim 4, characterized in that: The total reflection unit (12) is provided in multiple ways, and the multiple total reflection units (12) are evenly distributed; the total reflection unit (12) is arranged in a one-to-one correspondence with the light incident end (11), and an LED light source is arranged at the incident surface of the light incident end (11).
6. The optical system as described in claim 5, characterized in that: The cross-sectional line of the light-incident end (11) has one or more focal points, and the focal point corresponding to each cross-sectional line constitutes the focal line of the light-incident end (11).
7. The optical system as claimed in claim 6, characterized in that: The incident light at the light-incident end (11) is monochromatic light or polychromatic light.
8. The optical system as claimed in claim 6, characterized in that: The light-inlet end (11), total reflection surface one (121), total reflection surface two (122) and / or total reflection surface three (123) are provided with light distribution patterns.
9. The optical system as claimed in claim 8, characterized in that: The incident angles of the total reflection surface one (121), the total reflection surface two (122), and the total reflection surface three (123) are all 40-50 degrees.
10. A vehicle light, characterized in that, Includes the optical system as described in any one of claims 1 to 9.