Optical element, optical module and vehicle lamp

Abstract

The optical element comprises a main body part and a light-transmitting convex block, and the main body part is provided with a light inlet face and a light outlet face which are oppositely arranged; at least one light-transmitting convex block is arranged on the peripheral side of the light-emitting surface; after light passes through the light-emitting surface, an irradiation area is formed on the side, away from the light-in surface, of the light-emitting surface. The light-transmitting protruding block is provided with a refraction face so that part of light rays incident from one side of the light incident face can be refracted to be emitted out in the direction away from the irradiation area. The light-transmitting convex blocks are arranged on the peripheral side of the light-emitting surface, so that part of light incident from the light-incident surface is refracted by the refracting surface and then is emitted in the direction away from the irradiation area; and stray light is refracted into a space outside an irradiation area, so that the uniformity of light rays of the automobile lamp is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle lighting, and particularly to an optical element, an optical module and a vehicle lamp. Background Art

[0002] Currently, the LED vehicle lamp technology in the market is becoming increasingly mature, and the designs of the shapes of vehicle lamps are diverse, which puts forward higher requirements for the optical performance such as the uniformity and width of the low beam and high beam of the vehicle; due to the design of the shape of the vehicle lamp, the optical device is small, and stray light is likely to occur on the peripheral side of the vehicle lamp, thereby affecting the optical performance such as the uniformity of the low beam and high beam of the vehicle.

[0003] Therefore, it is necessary to improve the existing technology. Summary of the Utility Model

[0004] The present application aims to solve at least one of the technical problems existing in the prior art, and provides an optical element, an optical module and a vehicle lamp.

[0005] According to one aspect of the present application, the present application provides an optical element, including a main body portion and a light-transmitting convex block. The main body portion has an incident light surface and an emergent light surface which are oppositely arranged; at least one light-transmitting convex block is provided on the periphery of the emergent light surface; wherein, after the light passes through the emergent light surface, an illumination area is formed on the side of the emergent light surface away from the incident light surface; the light-transmitting convex block has a refracting surface to refract a part of the light incident from the side of the incident light surface and emit it in a direction away from the illumination area.

[0006] In one embodiment, the incident light surface includes a first incident light sub-surface and a second incident light sub-surface. The second incident light sub-surface is arranged on the periphery of the first incident light sub-surface, and the illumination area is formed after the light passes through the first incident light sub-surface; the positive projection of the refracting surface on the plane where the emergent light surface is located is adjacent to or partially overlaps with the positive projection of the first incident light sub-surface on the plane where the emergent light surface is located.

[0007] In one embodiment, in the direction perpendicular to the emergent light surface, the distance between the second incident light sub-surface and the emergent light surface is less than the distance between the first incident light sub-surface and the emergent light surface.

[0008] In one embodiment, the included angle between the refracting surface and the emergent light surface is α, satisfying: 30° ≤ α ≤ 80°.

[0009] In one embodiment, α = 40°.

[0010] In one embodiment, in the direction perpendicular to the emergent light surface, the maximum distance between the refracting surface and the emergent light surface is h mm, satisfying: 1 ≤ h ≤ 5.

[0011] In one embodiment, the refracting surface has a first refracting sub-surface and a second refracting sub-surface adjacent to each other. The second refracting sub-surface is connected between the first refracting sub-surface and the main body portion, and the slope of the first refracting sub-surface is smaller than the slope of the second refracting sub-surface.

[0012] In one embodiment, the light-transmitting bump further has a demolding inclined surface connected between the refracting surface and the light-emitting surface. The included angle between the demolding inclined surface and the light-emitting surface is β, satisfying: 93° ≤ β ≤ 95°.

[0013] According to another aspect of the present application, there is provided an optical module, including the optical element described in any one of the foregoing items. The optical module further includes a reflector, and the optical element is fixedly provided on the reflector.

[0014] In one embodiment, the light-incident surface includes a first light-incident sub-surface and a second light-incident sub-surface. The second light-incident sub-surface is disposed on the periphery of the first light-incident sub-surface. After the light passes through the first light-incident sub-surface, the illumination area is formed; the main body portion further has a connecting surface connected between the first light-incident sub-surface and the second light-incident sub-surface; a leather grain structure is provided on the side surface of the reflector opposite to the connecting surface.

[0015] According to another aspect of the present application, there is provided a vehicle lamp, including the optical module described in any one of the foregoing.

[0016] The beneficial effect of the present application is that by providing the light-transmitting bumps on the periphery of the light-emitting surface, part of the light incident from the light-incident surface (the light that is not used to form the illumination area, that is, stray light) is refracted by the refracting surface and emitted in a direction away from the illumination area; the stray light is refracted into the space outside the illumination area, effectively improving the uniformity of the vehicle lamp light. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following will, in conjunction with the drawings, make the technical solutions and other beneficial effects of the present application obvious through a detailed description of the specific embodiments of the present application.

[0018] Figure 1 It is a schematic diagram of an optical module provided by an embodiment of the present application.

[0019] Figure 2 is Figure 1 the front view of

[0020] Figure 3 is Figure 2 the enlarged view of part A in

[0021] Figure 4 is Figure 2 the enlarged view of another embodiment of part A in

[0022] Figure 5 It is an exploded view of an optical module provided by an embodiment of the present application.

[0023] Figure 6 It is a schematic diagram of an optical element provided by an embodiment of the present application.

[0024] In the figure:

[0025] 10. Optical element; 11. Main body part; 111. Light incident surface; 1111. First light incident sub-surface; 1112. Second light incident sub-surface; 112. Light exit surface; 113. Connection surface; 12. Mounting part; 121. First surface; 122. Second surface; 13. Translucent bump; 131. Refraction surface; 1311. First refraction sub-surface; 1312. Second refraction sub-surface; 132. Demolding inclined surface;

[0026] 20. Reflecting mirror; 21. Leather texture structure;

[0027] 30. Positioning structure; 31. Positioning block; 32. Positioning groove; 33. Welding bump;

[0028] 40. Mounting gap;

[0029] 50. Irradiation area. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] Next, the optical element, optical module, and vehicle lamp in the present application will be elaborated in detail in conjunction with the accompanying drawings and specific embodiments.

[0033] In the prior art, stray light is likely to occur on the periphery of the vehicle lamp, thereby affecting the optical performance such as the uniformity of the vehicle lamp.

[0034] To solve the above technical problems, an embodiment of the present application provides an optical element, which includes a main body portion and a light-transmitting convex block. The main body portion has an incident light surface and an emergent light surface that are oppositely arranged; at least one light-transmitting convex block is provided on the periphery of the emergent light surface; wherein, after the light passes through the emergent light surface, an illumination area is formed on the side of the emergent light surface away from the incident light surface; the light-transmitting convex block has a refracting surface to refract a part of the light incident from the side of the incident light surface in a direction away from the illumination area and emit it. By providing the light-transmitting convex block on the periphery of the emergent light surface, a part of the light incident from the incident light surface (the light not used to form the illumination area, i.e., stray light) is refracted by the refracting surface and emitted in a direction away from the illumination area; the stray light is refracted into the space outside the illumination area, effectively improving the uniformity of the vehicle headlight light. The following will be elaborated in detail.

[0035] Refer to Figure 1 , Figure 5 and Figure 6 , in an embodiment, the optical element 10 includes a main body portion 11 and a light-transmitting convex block 13. The main body portion 11 has an incident light surface 111 and an emergent light surface 112 that are oppositely arranged. A light-transmitting convex block 13 is provided on the periphery of the emergent light surface 112. After the light passes through the emergent light surface 112, an illumination area 50 is formed on the side of the emergent light surface 112 away from the incident light surface 111. The light-transmitting convex block 13 has a refracting surface 131, and the refracting surface 131 refracts a part of the light incident from the side of the incident light surface 111 (the light not used to form the illumination area 50, i.e., stray light) in a direction away from the illumination area 50 and emits it. The light-transmitting convex block 13 is provided on the periphery of the emergent light surface 112, which can refract the stray light at the edge of the optical element 10 (the emergent light surface 112) into the space outside the illumination area 50, improving the uniformity of the vehicle headlight light; through the setting of the refracting surface 131, the refraction angle of the stray light can be controlled, and it can be adjusted according to factors such as the different structures of the optical element 10 and the different incident light rays. The structure is simple.

[0036] It should be noted that at least one light-transmitting convex block 13 is provided on the periphery of the emergent light surface 112. Different numbers of light-transmitting convex blocks 13 are set according to the specific structure of the vehicle headlight. The light-transmitting convex block 13 can be provided on multiple sides of the emergent light surface 112, as long as the light-transmitting convex block 13 can refract the unnecessary light (stray light) out of the illumination area 50. In this embodiment, the optical element 10 is in a long strip shape, and a light-transmitting convex block 13 is provided on each of the two sides in the length direction of the optical element 10 (the main body portion 11), and the emergent light surface 112 is formed between the two light-transmitting convex blocks 13; in addition, in this embodiment, the light-transmitting convex block 13 and the main body portion 11 are integrally provided and can be formed by injection molding. In some embodiments, the light-transmitting convex block 13 and the main body portion 11 can also be separately provided and fixed by means such as pasting, not limited to this.

[0037] Refer toFigure 6 , in one embodiment, the light incident surface 111 includes a first light incident sub-surface 1111 and a second light incident sub-surface 1112. The second light incident sub-surface 1112 is disposed on the periphery of the first light incident sub-surface 1111. After the light passes through the first light incident sub-surface 1111, an illumination area 50 is formed. The positive projection of the refraction surface 131 on the plane where the light exit surface 112 is located is adjacent to or partially overlaps with the positive projection of the first light incident sub-surface 1111 on the plane where the light exit surface 112 is located. Such a setting can ensure that the light incident from the second light incident sub-surface 1112 can be refracted by the refraction surface 131 and then emitted in a direction away from the illumination area 50, effectively removing stray light and improving the uniformity of the light emitted from the light exit surface 112.

[0038] It should be noted that, in some embodiments, by adjusting the distance between the light-transmitting bumps 13 on the left and right sides ( Figure 6 viewing angle), the size of the light exit surface 112 can be adjusted to adjust the size of the illumination area 50. While enabling the setting of vehicle headlights with different lighting requirements, the stray light can also be removed through the setting of the refraction surface 131 to improve the uniformity of the light emitted from the light exit surface 112. In addition, in this embodiment, the positive projection of the refraction surface 131 on the plane where the light exit surface 112 is located can cover the positive projection of the second light incident sub-surface 1112 on the plane where the light exit surface 112 is located. Such a setting can ensure that all the light incident from the second light incident sub-surface 1112 (the light not used to form the illumination area 50) is refracted by the refraction surface 131 and emitted in a direction away from the illumination area 50; in some embodiments, the positive projection of the refraction surface 131 on the plane where the light exit surface 112 is located covers a part of the positive projection of the second light incident sub-surface 1112 on the plane where the light exit surface 112 is located. The light incident from the uncovered second light incident sub-surface 1112 can be blocked by the bracket (the bracket for mounting the optical element 10) to remove the stray light and also ensure the optical performance of the vehicle headlight.

[0039] Refer to Figure 6 , in one embodiment, in the direction perpendicular to the light exit surface 112, the distance from the second light incident sub-surface 1112 to the light exit surface 112 is less than the distance from the first light incident sub-surface 1111 to the light exit surface 112, that is, the middle of the main body 11 is thick and the two ends are thin ( Figure 6 viewing angle); such a setting can avoid interference between the main body 11 (optical element 10) and the bracket when the main body 11 is mounted on the bracket, improving the assembly efficiency.

[0040] Refer to Figure 2 and Figure 3, in an embodiment, the included angle α between the refraction surface 131 and the light-emitting surface 112 satisfies: 30° ≤ α ≤ 80°, such as 30°, 40°, 50°, 60°, 70°, 80°, etc. When the value of α is less than 30°, the refraction surface 131 and the light-emitting surface 112 are close to parallel, and the light rays (stray light) refracted by the refraction surface 131 cannot deviate from the irradiation area 50 at a large angle (that is, part of the light rays will be close to the edge of the irradiation area 50 after being refracted by the refraction surface 131), which is not conducive to the uniformity of the overall light; when the value of α is greater than 80°, the refraction surface 131 and the light-emitting surface 112 are close to perpendicular. At this time, the positive projection area of the refraction surface 131 on the plane where the light-emitting surface 112 is located is small, that is, the refraction surface 131 cannot cover a large amount of stray light. And when the value of α is greater than 80°, during injection molding, it is not conducive to demolding, the interaction force between the refraction surface 131 and the mold bracket is large, which is not conducive to the improvement of production efficiency, and the parts (optical element 10) may be strained during the demolding process. It has been verified that when 30° ≤ α ≤ 80°, preferably α = 40°, which can not only ensure good refraction effect of the refraction surface 131 on stray light (deviating from the irradiation area 50 at a large angle), but also ensure that the refraction surface 131 can refract a large area of stray light, and at the same time ensure the smooth demolding during the injection molding process, effectively improving the production efficiency and the yield rate of the product.

[0041] Refer to Figure 2 and Figure 3 , in an embodiment, in the direction perpendicular to the light-emitting surface 112, the maximum distance (i.e., Figure 3 in the viewing angle, the height of the light-transmitting convex block 13) between the refraction surface 131 and the light-emitting surface 112 is hmm, satisfying: 1 ≤ h ≤ 5, such as 1, 2, 3, 4, 5, etc. When the value of h is less than 1, the height of the light-transmitting convex block 13 is too low, which is not conducive to processing and forming. And when the value is less than 1, the area of the corresponding refraction surface 131 will also become smaller, and it cannot cover a large amount of stray light; when the value of h is greater than 5, the height of the light-transmitting convex block 13 is too high, which will occupy the space at the top of the optical element 10 ( Figure 3 viewing angle), which is not conducive to the design of the headlight shape. It has been verified that when 1 ≤ h ≤ 5, it can not only ensure that the refraction surface 131 can refract a large area of stray light, but also avoid occupying the space at the top of the optical element 10, which is beneficial to the headlight structure design.

[0042] Refer to Figure 4 , in an embodiment, the refraction surface 131 has a first refraction sub-surface 1311 and a second refraction sub-surface 1312 adjacent to each other. The second refraction sub-surface 1312 is connected between the first refraction sub-surface 1311 and the main body portion 11, and the slope of the first refraction sub-surface 1311 is less than the slope of the second refraction sub-surface 1312.

[0043] It should be noted that the slope of the first refractive surface 1311 is less than that of the second refractive surface 1312, that is, the second refractive surface 1312 is steeper than the first refractive surface 1311, which means the first refractive surface 1311 is more inclined to the right side ( Figure 4 viewing angle). With such a setting, the light refracted by the refractive surface 131 can be refracted into two different regions respectively, and the stray light is dispersed in each region. That is, there is less light in a single region, which is beneficial to reducing the temperature in this region and improving the service life of the vehicle lamp. At the same time, with such a setting, rapid demolding can be achieved, and at the same time, damage to the light-transmitting bump 13 during the demolding process can be avoided.

[0044] In some embodiments, the refractive surface 131 can also be set as a convex or concave curved surface, which can ensure the refraction effect of the stray light without affecting the demolding (if it is not injection molding, the demolding operation does not need to be considered), and it is not limited to this.

[0045] Refer to Figure 3 , in an embodiment, the light-transmitting bump 13 further has a demolding inclined surface 132, which is connected between the refractive surface 131 and the light-emitting surface 112, and the angle between the demolding inclined surface 132 and the light-emitting surface 112 is β, satisfying: 93° ≤ β ≤ 95°, such as 90°, 94°, 95°, etc. When the value of β is less than 93°, the demolding inclined surface 132 is close to perpendicular to the light-emitting surface 112 or forms an acute angle therebetween, and the mutual force (friction force) between the demolding inclined surface 132 and the mold is relatively large, which is not conducive to the demolding operation of the light-transmitting bump 13. Even when an acute angle is formed between the demolding inclined surface 132 and the light-emitting surface 112, the surface of the light-transmitting bump 13 will be damaged during the demolding process, reducing the yield rate. When the value of β is greater than 95°, the distance of the demolding inclined surface 132 along the transverse ( Figure 3 viewing angle) is too large (when the height of the light-transmitting bump 13 remains unchanged), which will occupy the area of the light-emitting surface 112 and is not conducive to the design of the vehicle lamp. It has been verified that when 93° ≤ β ≤ 95°, the smooth progress of the demolding process can be ensured, the yield rate can be improved, and at the same time, the area of the light-emitting surface 112 will not be occupied, which is beneficial to the structural design of the vehicle lamp.

[0046] Refer to Figure 1 and Figure 5, on the other hand, the present application also relates to an optical module, which includes any one of the foregoing optical elements 10. The optical module further includes a mirror 20, and the optical element 10 is fixedly disposed on the mirror 20. In this embodiment, the optical element 10 further includes mounting portions 12, which are disposed on opposite sides of the main body portion 11, and are fixedly mounted to the mirror 20 through the mounting portions 12; the mounting portions 12 are horizontally disposed on the mounting support surface of the mirror 20, with the incident light surface 111 facing the reflection area of the mirror 20. In this embodiment, the incident light surface 111 includes a first incident light sub-surface 1111 and a second incident light sub-surface 1112. The second incident light sub-surface 1112 is disposed on the periphery of the first incident light sub-surface 1111. After the light passes through the first incident light sub-surface 1111, an illumination area 50 is formed. In the direction perpendicular to the light exit surface 112, the distance from the second incident light sub-surface 1112 to the light exit surface 112 is less than the distance from the first incident light sub-surface 1111 to the light exit surface 112, that is, the middle of the main body portion 11 is thick and the two ends are thin ( Figure 6 viewing angle); such a setting can avoid interference between the two ends of the first incident light sub-surface 1111 in the lateral direction ( Figure 6 viewing angle) and the mirror 20 when the optical element 10 is mounted on the mounting support surface of the mirror 20, that is, an installation gap 40 is formed between the main body portion 11 and the mirror 20, improving the assembly efficiency.

[0047] It should be noted that the mounting portion 12 and the mirror 20 are positioned and fixed through a positioning structure 30. The positioning structure 30 includes a positioning block 31, a positioning groove 32, and a welding bump 33. In this embodiment, the positioning block 31 is disposed on the mounting support surface of the mirror 20, and the positioning groove 32 is disposed on the mounting portion 12. The relative position between the optical element 10 and the mirror 20 is positioned by the positioning block 31 being snapped into the positioning groove 32, improving the assembly accuracy and assembly efficiency; after the cooperation of the positioning block 31 and the positioning groove 32, the optical element 10 is positioned on the mirror 20. At this time, the welding bump 33 is melt-welded from the side of the mounting portion 12 facing away from the mirror 20 (transparent material in this embodiment) by laser welding (using laser as energy to melt the material to achieve welding between materials), realizing the fixation of the optical element 10 and the mirror 20.

[0048] In some embodiments, the positioning groove 32 can be disposed on the mounting support surface of the mirror 20, the positioning block 31 is disposed on the mounting portion 12, and the positioning block 31 can be wedge-shaped, having a positioning function and a guiding function at the same time, and can guide the positioning block 31 to the positioning groove 32 for positioning, with a simple structure and further improving the assembly efficiency; in addition, in some embodiments, the positioning structure 30 can also be set in other forms, and the fixation between the optical element 10 and the mirror 20 can also be in other forms, such as glue bonding, etc., not limited to this.

[0049] Refer to Figure 6 , in one embodiment, the installation part 12 has a first surface 121 and a second surface 122 in a direction perpendicular to the light-emitting surface 112, and the first surface 121 is arranged above the second surface 122 ( Figure 6 in the perspective view). When the installation part 12 also uses a light-transmitting material, it can be injection-molded together with the main body part 11. The first surface 121 is flush with the light-emitting surface 112, so that the processing difficulty of the mold itself can be reduced. In some embodiments, the first surface 121 can also be convex out of the light-emitting surface 112, or the first surface 121 is arranged between the light-emitting surface 112 and the light-incident surface 111, which is set according to the actual installation structure, not limited to this.

[0050] Refer to Figure 3 , in one embodiment, the light-incident surface 111 includes a first light-incident sub-surface 1111 and a second light-incident sub-surface 1112. The second light-incident sub-surface 1112 is arranged on the periphery of the first light-incident sub-surface 1111. After the light passes through the first light-incident sub-surface 1111, an illumination area 50 is formed. The main body part 11 also has a connection surface 113, and this connection surface 113 is connected between the first light-incident sub-surface 1111 and the second light-incident sub-surface 1112, that is, the side surface of the main body part 11. In this embodiment, both ends of the main body part 11 in the length direction are stepped (as Figure 3 shown). An installation gap 40 is formed between the connection surface 113 and the reflector 20, reserving an assembly margin and improving the assembly efficiency; a leather texture structure 21 is provided on the part of the reflector 20 opposite to the connection surface 113. With such a setting, after part of the stray light enters the installation gap 40, it can be reflected by the leather texture structure 21, and it can also achieve the effect of eliminating light (refracting the stray light toward the direction away from the illumination area 50).

[0051] On the other hand, the present application also relates to a vehicle lamp, including any one of the foregoing optical modules.

[0052] Adopting the technical solution provided by the embodiment of the present application aims to set a light-transmitting convex block 13 on the periphery of the light-emitting surface 112, so that part of the light (the light that is not used to form the illumination area 50, that is, stray light) incident from the light-incident surface 111 is refracted by the refracting surface 131 and then emitted in a direction away from the illumination area 50; the stray light is refracted into the space outside the illumination area 50, effectively improving the uniformity of the vehicle lamp light.

[0053] In each embodiment of the present application, if there is no special description and logical conflict, the terms or descriptions between different embodiments are consistent and can be mutually referenced. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship. In the present application, "at least one" means one or more, and "a plurality" means two or more.

[0054] It should be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The magnitudes of the serial numbers of the above processes do not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic.

[0055] The above has introduced in detail the optical element, optical module and vehicle lamp provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the present application and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An optical element, characterized in that, Comprising a main body portion having an incident light surface and an emergent light surface disposed opposite to each other; and a light-transmitting convex block, at least one of the light-transmitting convex block being provided on the periphery of the emergent light surface; wherein, after the light passes through the emergent light surface, an illumination area is formed on the side of the emergent light surface away from the incident light surface; the light-transmitting convex block has a refracting surface to refract a part of the light incident from the side of the incident light surface and emit it in a direction away from the illumination area.

2. The optical element according to claim 1, wherein the incident light surface includes a first incident light sub-surface and a second incident light sub-surface, the second incident light sub-surface is disposed on the periphery of the first incident light sub-surface, and the illumination area is formed after the light passes through the first incident light sub-surface; the positive projection of the refracting surface on the plane where the emergent light surface is located is adjacent to or partially overlaps with the positive projection of the first incident light sub-surface on the plane where the emergent light surface is located.

3. The optical element according to claim 2, wherein in a direction perpendicular to the emergent light surface, the distance from the second incident light sub-surface to the emergent light surface is less than the distance from the first incident light sub-surface to the emergent light surface.

4. The optical element according to claim 1, wherein the angle between the refracting surface and the emergent light surface is α, satisfying: 30° ≤ α ≤ 80°.

5. The optical element according to claim 4, wherein α＝40°。 6. The optical element according to claim 1, wherein in a direction perpendicular to the emergent light surface, the maximum distance between the refracting surface and the emergent light surface is h mm, satisfying: 1 ≤ h ≤ 5.

7. The optical element according to claim 1, wherein the refracting surface has a first refracting sub-surface and a second refracting sub-surface adjacent to each other, the second refracting sub-surface is connected between the first refracting sub-surface and the main body portion, and the slope of the first refracting sub-surface is less than the slope of the second refracting sub-surface.

8. The optical element according to claim 1, wherein the light-transmitting convex block further has a demolding inclined surface, the demolding inclined surface is connected between the refracting surface and the emergent light surface, and the angle between the demolding inclined surface and the emergent light surface is β, satisfying: 93° ≤ β ≤ 95°.

9. An optical module, characterized in that, An optical module comprising the optical element according to any one of claims 1 to 8, the optical module further includes a reflector, and the optical element is fixedly provided on the reflector.

10. The optical module according to claim 9, wherein the incident light surface includes a first incident light sub-surface and a second incident light sub-surface, the second incident light sub-surface is disposed on the periphery of the first incident light sub-surface, and the illumination area is formed after the light passes through the first incident light sub-surface; the main body portion further has a connecting surface, the connecting surface is connected between the first incident light sub-surface and the second incident light sub-surface; a leather grain structure is provided on the side surface of the reflector opposite to the connecting surface.

11. A vehicle lamp, characterized in that, An optical module comprising the optical module according to any one of claims 9 to 10.

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