Light guide structure, optical system and vehicle

Abstract

The application discloses a light guide structure, an optical system and a vehicle. The light guide structure comprises a light guide and a light guide plate. The light guide has a light guide entrance surface, a light guide reflection surface and a light guide exit surface. At least one end of the light guide is arranged as the light guide entrance surface. The light guide plate has a light guide plate back surface and a light guide plate exit surface. The light guide plate is arranged on the side wall of the light guide and is formed as an integral part with the light guide. Light enters the light guide through the light guide entrance surface. Part of the light is reflected by the light guide reflection surface and then exits from the light guide exit surface. Another part of the light enters the light guide plate through the light guide, is reflected by the light guide plate back surface and then exits from the light guide plate exit surface. The light guide plate exit surface is connected with the light guide exit surface, and the light guide plate back surface is connected with the light guide reflection surface. The included angle between at least one of the light guide plate exit surface and the light guide plate back surface and the tangent surface at the connection of the light guide is greater than or equal to 150° and less than or equal to 180°, or the at least one is inscribed in the connection of the light guide, or the at least one is arranged as a transition curved surface at the connection of the light guide.

Description

Technical Field

[0001] This application belongs to the field of automotive lighting technology, and particularly relates to a light guide structure, optical system and vehicle. Background Technology

[0002] With technological advancements and societal progress, people have increasingly higher demands for lighting and signaling equipment on motor vehicles. To meet these functional requirements, the number of components in lighting and signaling equipment has increased, and their structures have become more complex. Driven by the need for diverse designs, light guide technology has emerged.

[0003] A light guide structure exists, comprising a light guide and a light guide plate. The light guide plate is disposed on the sidewall of the light guide and forms an integral part with the light guide. The light incident surface is located at the end of the light guide. After light enters the light guide from the light incident surface, part of it exits from the light output surface, and the other part enters the light guide plate and exits from the light output surface of the light guide plate. This allows for the illumination of a larger and wider light output surface (including the light output surface and the light output surface of the light guide plate) with fewer LEDs. However, for the sake of luminous efficiency, it is difficult to make the thickness of the light guide plate the same as the thickness of the light guide. The light guide plate is directly connected to the sidewall of the light guide, resulting in a clear boundary line at the connection point. This causes static appearance defects and lighting defects in the light guide structure. Utility Model Content

[0004] To address the aforementioned issues, this application provides a light guide structure, a vehicle lamp, and a vehicle.

[0005] The technical solution of this application is as follows: A light guide structure includes a light guide and a light guide plate. The light guide has a light-introducing surface, a light-reflecting surface, and a light-outtroducing surface. At least one end of the light guide is configured as the light-introducing surface. The light guide plate has a back surface and an exit surface. The light guide plate is disposed on the sidewall of the light guide and is integrally formed with the light guide. Light enters the light guide through the light-introducing surface. A portion of the light is reflected by the light-reflecting surface and exits through the light-outtroducing surface. Another portion of the light enters the light guide plate through the light guide and is reflected by the back surface of the light guide plate before exiting through the exit surface. The light-emitting surface of the light guide plate is connected to the light-exiting surface, and the back surface of the light guide plate is connected to the light-reflecting surface of the light guide plate. The angle between the tangent plane at the connection point of at least one of the light-emitting surface of the light guide plate and the back surface of the light guide plate with the light guide plate is greater than or equal to 150° and less than or equal to 180°, or the connection point of at least one of the light-emitting surface of the light guide plate and the back surface of the light guide plate with the light guide plate is internally tangent to the light guide plate, or the connection point of at least one of the light-emitting surface of the light guide plate and the back surface of the light guide plate with the light guide plate is set as a transition curved surface.

[0006] In a preferred embodiment of the light guide structure, the light-emitting surface of the light guide plate is connected to the light guide to form a first connection point. The light-emitting surface of the light guide plate includes at least one first plane, and the angle between the first plane and the tangent of the first connection point is greater than or equal to 150° and less than or equal to 180°. And / or, The back of the light guide plate is connected to the light guide to form a second connection point. The back of the light guide plate includes at least one second plane. The angle between the second plane and the tangent of the second connection point is greater than or equal to 150° and less than or equal to 180°.

[0007] In a preferred embodiment of the light guide structure, the light-emitting surface of the light guide plate is connected to the light guide to form a first connection point. The light-emitting surface of the light guide plate includes at least one first curved surface, and the light-emitting surface is internally tangent to the first curved surface at the first connection point. And / or, The back of the light guide plate is connected to the light guide to form a second connection point. The back of the light guide plate includes at least one second curved surface, and the light guide reflective surface is tangent to the second curved surface at the second connection point.

[0008] In a preferred embodiment of the light guide structure, a first transition surface is provided at the connection between the light-emitting surface of the light guide plate and the light guide. One end of the first transition surface is connected to the light-emitting surface of the light guide plate, and the other end is connected to the light-emitting surface, forming a smooth transition at the connection. And / or, A second transition surface is provided on the back of the light guide plate and at the connection point of the light guide. One end of the second transition surface is connected to the back of the light guide plate, and the other end is connected to the reflective surface of the light guide, forming a smooth transition at the connection point.

[0009] In a preferred embodiment of the light guide structure, the light-emitting surface of the light guide plate further includes at least one first inclined surface, which connects smoothly to the first plane. And / or, The back of the light guide plate also includes at least one second inclined surface, which connects to the second plane and forms a smooth transition.

[0010] In a preferred embodiment of the light guide structure, the light-emitting surface of the light guide plate further includes at least one first inclined surface, which connects smoothly to the first curved surface. And / or, The back of the light guide plate also includes at least one second inclined surface, which connects with the second curved surface to form a smooth transition.

[0011] In a preferred embodiment of the light guide structure, the light-emitting surface of the light guide plate further includes at least one first inclined surface, which connects smoothly with the first transition surface. And / or, The back of the light guide plate also includes at least one second inclined surface, which connects with the second transition surface to form a smooth transition.

[0012] In a preferred embodiment of the light guide structure, the light-emitting surface of the light guide structure is provided with patterns and / or textures.

[0013] In a preferred embodiment of the light guide structure, the light guide reflective surface is provided with light guide teeth.

[0014] In a preferred embodiment of the light guide structure, a microstructure is provided on the back side of the light guide plate.

[0015] Based on the same concept, this application also provides an optical system, including a light source and a light guide structure as described in any of the above. Light emitted from the light source enters the light guide from the light guide surface, a portion of the light is reflected by the light guide reflective surface and exits from the light guide surface, and another portion of the light enters the light guide plate through the light guide and is reflected by the back of the light guide plate and exits from the light guide plate light exit surface.

[0016] Based on the same concept, this application also provides a vehicle including the optical system described above.

[0017] Because this application adopts the above technical solution, it has the following advantages and positive effects compared with the prior art: The light guide structure, optical system, and vehicle provided in this application have an included angle between the tangent surfaces of at least one of the light-emitting surface and the back surface of the light guide plate and the light guide at the connection point, which is greater than or equal to 150° and less than or equal to 180°; or the connection point of at least one of the light-emitting surface and the back surface of the light guide plate with the light guide is internally tangent; or the connection point of at least one of the light-emitting surface and the back surface of the light guide plate with the light guide is set as a transition curved surface. These special connection methods eliminate the obvious boundary line when the light guide plate is directly connected to the light guide, thereby minimizing or eliminating static appearance defects and illumination defects as much as possible. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application.

[0019] Figure 1 and Figure 2 This is a schematic diagram of a light guide structure in the prior art; Figure 3 This is one of the structural schematic diagrams of an optical guide structure according to this utility model; Figure 4 This is a second schematic diagram of the structure of an optical guide structure according to this utility model; Figure 5 This is the third schematic diagram of the optical guide structure of this utility model; Figure 6 This is the fourth schematic diagram of the optical guide structure of this utility model; Figure 7 This is the fifth schematic diagram of the optical guide structure of this utility model; Figure 8 This is one of the schematic diagrams showing the connection between the light-emitting surface (including a first plane and a first inclined surface) of a light guide plate and the light-exiting surface according to this utility model; Figure 9 This is a second schematic diagram showing the connection between the light-emitting surface (including a first curved surface and a first inclined surface) of a light guide plate and the light-emitting surface of the present invention. Figure 10 This is the third schematic diagram of the connection between the light-emitting surface (including the first transition surface and the first inclined surface) of the light guide plate and the light-emitting surface of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1: Light guide; 11: Light inlet / outlet surface; 12: Light outlet / reflector surface; 13: Light guide reflector surface; 14: Light guide teeth; 2: Light guide plate; 21: Light emitting surface of the light guide plate; 211: First plane; 212: First inclined surface; 213: First curved surface; 22: Back side of the light guide plate; 23: Microstructure; 31: First transition surface; 32: Second transition surface; 1': (in the prior art) light guide; 2': (in the prior art) light guide plate. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0022] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0023] In the description of this application, the term "a" not only means "only one" but can also mean "more than one". The terms "first", "second", "third", etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "perpendicular" and "parallel" do not mean absolutely perpendicular or parallel, but can be approximately perpendicular or approximately parallel.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] The terminology is based on the orientation or positional relationship shown in the accompanying drawings, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application; moreover, the orientation terminology of this application should be understood in conjunction with the actual installation state.

[0026] The first aspect of this application provides an optical guide structure. For example... Figures 3 to 10 As shown, an embodiment of this application provides a light guide structure including a light guide 1 and a light guide plate 2. The light guide 1 has a light-introducing surface 11, a light-reflecting surface 13, and a light-outtroducing surface 12. The light guide plate 2 has a back surface 22 and an emitting surface 21. The light guide plate 2 is disposed on the side wall of the light guide 1 and is formed as an integral part with the light guide 1, such that the light-outtroducing surface 12 is connected to the emitting surface 21 of the light guide plate, and the light-reflecting surface 13 is connected to the back surface 22 of the light guide plate. At least one end of the light guide 1 is set as the light-introducing surface 11. That is, both ends of the light guide 1 can be set as the light-introducing surface 11, or one end of the light guide 1 can be set as the light-introducing surface 11. The light source is set corresponding to the light-introducing surface 11. The light emitted by the light source enters the light guide 1 through the light-introducing surface 11. A part of the light is reflected by the light guide reflecting surface 13 and then exits through the light-out surface 12. Another part of the light enters the light guide plate 2 through the light guide 1 and is reflected by the back surface 22 of the light guide plate and then exits through the light-out surface 21 of the light guide plate.

[0027] The light guide plate 2 is connected to the side wall of the light guide 1. Specifically, the light guide plate 2 can be disposed on the side wall of the light guide 1 near the light-introducing surface 11. Of course, in other embodiments, the light guide plate 2 can also be disposed on the side wall at any position between the two ends of the light guide 1 or on the entire side wall of the light guide 1. This application does not limit this. It should be noted that the side wall of the light guide 1 is different from the light guide reflecting surface 13 and the light-outtroducing surface 12. The light guide plate 2 is not disposed at the light guide reflecting surface 13 and the light-outtroducing surface 12.

[0028] Furthermore, the light-emitting surfaces 12 and 21 of the light guide plate have the same light-emitting direction, and the two are connected to form the light-emitting surface of the light guide structure.

[0029] Light enters the light guide 1 from the light guide surface 11. Part of the light is reflected by the light guide reflector 13 and then emitted from the light guide surface 12. The other part of the light enters the light guide plate 2 through the light guide 1 and is emitted from the light guide plate light exit surface 21. Therefore, only a light source needs to be set at the corresponding light guide surface 11 to light up the light guide 1 and the light guide plate 2, so as to achieve the effect of lighting up a large light exit surface with a small number of light sources.

[0030] Since light enters from the end of light guide 1 (the light-inlet surface 11 is located at the end of light guide 1), it is difficult to make the thickness of light guide plate 2 the same as the thickness of light guide 1 (the thickness direction is perpendicular to the light-outlet surface 21 of the light guide plate) for light efficiency considerations. In the prior art, the cross-section of light guide 1' is ideally circular, and the thickness of light guide plate 2' needs to be less than the thickness of light guide 1'. If light guide 1' and light guide plate 2' are not optimized, light guide plate 2' is directly connected to light guide 1' with a circular cross-section (e.g., ...). Figure 1 and Figure 2 As shown in the figure, there will be a very obvious dividing line at the connection between the light guide 1' and the light guide plate 2', which will cause static appearance defects (the dividing line is not beautiful when the light guide 1' is not lit) and lighting defects (there will be an obvious dark area at the dividing line when the light guide 1' is lit).

[0031] To address the aforementioned issues, this application employs a unique connection method. The angle between the tangent surfaces of at least one of the light-emitting surface 21 and the back surface 22 of the light guide plate and the light guide 1 is greater than or equal to 150° and less than or equal to 180°; alternatively, the connection points of at least one of the light-emitting surface 21 and the back surface 22 of the light guide plate and the light guide 1 are internally tangent; or the connection points of at least one of the light-emitting surface 21 and the back surface 22 of the light guide plate and the light guide 1 are configured as transition surfaces. This unique connection method eliminates the obvious boundary line when the light guide plate 2 is directly connected to the light guide 1, thereby minimizing or eliminating static appearance defects and lighting defects as much as possible.

[0032] As one specific implementation of this application, such as Figure 5 and Figure 8 As shown ( Figure 5 The light guide plate shown includes a first plane 211, which is the light-emitting surface 21. Figure 8 The light-emitting surface 21 of the light guide plate shown includes a first plane 211 and a first inclined plane 212. The light-emitting surface 21 of the light guide plate is connected to the light guide 1 to form a first connection. The light-emitting surface 21 of the light guide plate includes at least one first plane 211. The angle α between the first plane 211 and the tangent plane a of the first connection is greater than or equal to 150° and less than or equal to 180°. And / or, the back surface 22 of the light guide plate is connected to the light guide 1 to form a second connection. The back surface 22 of the light guide plate includes at least one second plane. The angle between the second plane and the tangent plane of the second connection is greater than or equal to 150° and less than or equal to 180°, thereby weakening the difference in height and the sense of boundary at the connection between the light guide 1 and the light guide plate 2. Furthermore, the light-emitting surface 21 of the light guide plate also includes at least one first inclined surface 212 (here, "inclined" in "first inclined surface" refers to the inclination relative to the first plane 211). The first inclined surface 212 connects with the first plane 211 to form a smooth transition. The first inclined surface 212 can be a plane or a curved surface. And / or, the back surface 22 of the light guide plate also includes at least one second inclined surface. The second inclined surface connects with the second plane to form a smooth transition. The second inclined surface can be a plane or a curved surface. The included angle between the first plane 211 and / or the second plane and the corresponding cut surface is ensured to fall within the range of 150° to 180°, so that the boundary line at the connection between the light guide 1 and the light guide plate 2 is not obvious, weakening or eliminating static appearance defects and lighting defects. At the same time, according to the shape requirements of the light guide plate 2, the remaining parts of the light-emitting surface 21 and the back surface 22 of the light guide plate can be set as planes or as curved surfaces, which is not limited here. Furthermore, the radii of the light-exiting surface 12 and / or the light-guide reflecting surface 13 (the light-exiting surface 12 is generally set as an arc surface, and the radius of the light-exiting surface 12 is the radius corresponding to the arc surface; the light-guide reflecting surface 13 is also generally set as an arc surface, and the radius of the light-guide reflecting surface 13 is the radius corresponding to the arc surface) are set to be greater than or equal to 20 mm so that the included angle between the first plane 211 and / or the second plane and the corresponding tangent is within the range of 150° to 180°, thereby making the boundary line at the connection between the light guide 1 and the light guide plate 2 indistinct.

[0033] As one specific implementation of this application, such as Figure 4 or Figure 9 As shown ( Figure 4 The back surface 22 of the light guide plate shown includes a second curved surface; Figure 9The light-emitting surface 21 of the light guide plate shown includes a first curved surface 213 and a first inclined surface 212. The light-emitting surface 21 of the light guide plate is connected to the light guide 1 to form a first connection point. The light-emitting surface 21 of the light guide plate includes at least one first curved surface 213. The light-guiding surface 12 is internally tangent to the first curved surface 213 at the first connection point. And / or, the back surface 22 of the light guide plate is connected to the light guide 1 to form a second connection point. The back surface 22 of the light guide plate includes at least one second curved surface. The light-guiding reflective surface 13 is internally tangent to the second curved surface at the second connection point, thereby weakening the difference in height and the sense of boundary between the light guide 1 and the light guide plate 2. Further, the light-emitting surface 21 of the light guide plate also includes at least one first inclined surface 212. The first inclined surface 212 is connected to the first curved surface 213 to form a smooth transition. The first inclined surface 212 can be a plane or a curved surface. And / or, the back surface 22 of the light guide plate also includes at least one second inclined surface. The second inclined surface is connected to the second curved surface to form a smooth transition. The second inclined surface can be a plane or a curved surface. The light-guiding surface 12 or the light-guiding reflecting surface 13 is internally tangent to the corresponding first surface 213 or second surface, with the tangency point b. Figure 9 (The tangent point b between the first curved surface 213 and the light-emitting surface 12 is marked with a dot for illustration) is the first connection point or the second connection point, so that the boundary line between the light guide 1 and the light guide plate 2 is not obvious, thus weakening or eliminating static appearance defects and lighting defects. At the same time, according to the shape requirements of the light guide plate 2, the light-emitting surface 21 and the rest of the back surface 22 of the light guide plate can be set as a plane or as a curved surface, which is not restricted here.

[0034] As one specific implementation of this application, such as Figure 5 and Figure 10 As shown ( Figure 5 The back surface 22 of the light guide shown includes a second transition surface 32 and a second inclined surface; Figure 10The light-emitting surface 21 shown includes a first transition surface 31 and a first inclined surface 212. At least one of the light-emitting surface 21 and the back surface 22 of the light guide plate is configured as a transition surface at the connection with the light guide 1. Specifically, a first transition surface 31 is provided at the connection between the light-emitting surface 21 and the light guide 1. One end of the first transition surface 31 is connected to the light-emitting surface 21 of the light guide plate, and the other end is connected to the light-emitting surface 21, forming a smooth transition at the connection. And / or, a second transition surface 32 is provided at the connection between the back surface 22 of the light guide plate and the light guide 1. One end of the second transition surface 32 is connected to the back surface 22 of the light guide plate, and the other end is connected to the light guide reflective surface 13, forming a smooth transition at the connection. This weakens the difference in height and the sense of boundary at the connection between the light guide 1 and the light guide plate 2. Furthermore, the light-emitting surface 21 of the light guide plate also includes at least one first inclined surface 212, which connects with the first transition surface 31 to form a smooth transition. The first inclined surface 212 can be a plane or a curved surface. Alternatively, the back surface 22 of the light guide plate also includes at least one second inclined surface, which connects with the second transition surface 32 to form a smooth transition. The second inclined surface can also be a plane or a curved surface. By setting the first transition surface 31 and / or the second transition surface 32, the boundary line at the connection between the light guide 1 and the light guide plate 2 is eliminated, weakening or eliminating static appearance defects and lighting defects. At the same time, according to the shape requirements of the light guide plate 2, the remaining parts of the light-emitting surface 21 and the back surface 22 of the light guide plate can be set as either a plane or a curved surface; no restrictions are placed here.

[0035] As one specific implementation of this application, such as Figure 1 , Figure 3 and Figure 5 As shown, patterns and / or textures can be provided on the light-emitting surface of the light guide structure. The provision of patterns and / or textures can further reduce the drop and boundary at the connection between the light-emitting surface 12 and the light-emitting surface 21 of the light guide plate, and at the same time, it can diffuse and uniformly distribute the light emitted from the light-emitting surface, thereby reducing or eliminating static appearance defects and lighting defects of the light guide structure.

[0036] As one specific implementation of this application, such as Figure 6 and Figure 7 As shown, the light-guiding reflective surface 13 is provided with light-guiding teeth 14, which can enhance the reflection of light and effectively improve the light utilization rate.

[0037] As one specific implementation of this application, such as Figure 6 and Figure 7 As shown, the back of the light guide plate 22 is provided with a microstructure 23. The microstructure 23 can be at least one of the following: tooth-like structure, stripes, texture, grid pattern, bumps, conical pattern, and corn kernel pattern. There is no limitation here. The microstructure 23 can enhance the reflection of light and effectively improve the light utilization rate.

[0038] The second aspect of this application provides an optical system including a light source and the light guide structure provided in the first aspect of this application. Light emitted from the light source enters the light guide 1 through the light-inlet surface 11. A portion of the light is reflected by the light guide reflector 13 and exits through the light-outlet surface 12. Another portion of the light enters the light guide plate 2 through the light guide 1 and is reflected by the back surface 22 of the light guide plate before exiting through the light-outlet surface 21. This optical system possesses all the beneficial effects of the aforementioned light guide structure, which will not be elaborated further here.

[0039] The third aspect of this application provides a vehicle that includes the optical system provided in the second aspect of this application, and therefore possesses all its beneficial effects, which will not be elaborated here.

[0040] The embodiments of this application have been described in detail above with reference to the accompanying drawings, but this application is not limited to the above embodiments. Even if various changes are made to this application, if these changes fall within the scope of the claims of this application and their equivalents, they shall still fall within the protection scope of this application.

Claims

1. An optical guide structure, characterized in that, The light guide includes a light guide and a light guide plate. The light guide has a light-introducing surface, a light-reflecting surface, and a light-outtroducing surface. At least one end of the light guide is configured as the light-introducing surface. The light guide plate has a back surface and an exit surface. The light guide plate is disposed on the sidewall of the light guide and is formed as an integral part of the light guide. Light enters the light guide through the light-introducing surface. A portion of the light is reflected by the light-reflecting surface and exits through the light-outtroducing surface. Another portion of the light enters the light guide plate through the light guide and is reflected by the back surface of the light guide plate before exiting through the exit surface. The light-emitting surface of the light guide plate is connected to the light-exiting surface, and the back surface of the light guide plate is connected to the light-reflecting surface of the light guide plate. The angle between the tangent plane at the connection point of at least one of the light-emitting surface of the light guide plate and the back surface of the light guide plate with the light guide plate is greater than or equal to 150° and less than or equal to 180°, or the connection point of at least one of the light-emitting surface of the light guide plate and the back surface of the light guide plate with the light guide plate is internally tangent to the light guide plate, or the connection point of at least one of the light-emitting surface of the light guide plate and the back surface of the light guide plate with the light guide plate is set as a transition curved surface.

2. The optical guide structure according to claim 1, characterized in that, The light-emitting surface of the light guide plate is connected to the light guide to form a first connection point. The light-emitting surface of the light guide plate includes at least one first plane, and the angle between the first plane and the tangent of the first connection point is greater than or equal to 150° and less than or equal to 180°. And / or, The back of the light guide plate is connected to the light guide to form a second connection point. The back of the light guide plate includes at least one second plane. The angle between the second plane and the tangent of the second connection point is greater than or equal to 150° and less than or equal to 180°.

3. The optical guide structure according to claim 1, characterized in that, The light-emitting surface of the light guide plate is connected to the light guide to form a first connection point. The light-emitting surface of the light guide plate includes at least one first curved surface, and the light-emitting surface is internally tangent to the first curved surface at the first connection point. And / or, The back of the light guide plate is connected to the light guide to form a second connection point. The back of the light guide plate includes at least one second curved surface, and the light guide reflective surface is tangent to the second curved surface at the second connection point.

4. The optical guide structure according to claim 1, characterized in that, A first transition surface is provided at the connection between the light-emitting surface of the light guide plate and the light guide, with one end of the first transition surface connecting to the light-emitting surface of the light guide plate and the other end connecting to the light-emitting surface of the light guide plate, forming a smooth transition at the connection. And / or, A second transition surface is provided on the back of the light guide plate and at the connection point of the light guide. One end of the second transition surface is connected to the back of the light guide plate, and the other end is connected to the reflective surface of the light guide, forming a smooth transition at the connection point.

5. The optical guide structure according to claim 2, characterized in that, The light-emitting surface of the light guide plate further includes at least one first inclined surface, which connects smoothly to the first plane. And / or, The back of the light guide plate also includes at least one second inclined surface, which connects to the second plane and forms a smooth transition.

6. The optical guide structure according to claim 3, characterized in that, The light-emitting surface of the light guide plate further includes at least one first inclined surface, which connects smoothly to the first curved surface. And / or, The back of the light guide plate also includes at least one second inclined surface, which connects with the second curved surface to form a smooth transition.

7. The optical guide structure according to claim 4, characterized in that, The light-emitting surface of the light guide plate further includes at least one first inclined surface, which connects smoothly with the first transition surface. And / or, The back of the light guide plate also includes at least one second inclined surface, which connects with the second transition surface to form a smooth transition.

8. The optical guide structure according to claim 1, characterized in that, The light-emitting surface of the light guide structure is provided with patterns and / or textures.

9. The optical guide structure according to claim 1, characterized in that, The light-guiding reflective surface is provided with light-guiding teeth.

10. The optical guide structure according to claim 1, characterized in that, The back of the light guide plate is provided with microstructures.

11. An optical system, characterized in that, The light source includes a light source and a light guide structure as described in any one of claims 1 to 10. The light emitted by the light source enters the light guide from the light guide surface, a portion of the light is reflected by the light guide reflective surface and exits from the light guide surface, and another portion of the light enters the light guide plate through the light guide and is reflected by the back of the light guide plate and exits from the light guide plate light exit surface.

12. A vehicle, characterized in that, Includes the optical system as described in claim 11.

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