Optical module, vehicle lamp and vehicle

Abstract

The utility model discloses an optical module, a vehicle lamp and a vehicle. The optical module comprises a first light guide component and a second light guide component. The first light guide component is provided with a light incident surface and a light emergent surface, and is configured to adjust light rays incident from the light incident surface into parallel light rays and emit the parallel light rays to the light emergent surface; the second light guide part is arranged on the light emitting side of the first light guide part through the mounting part; the light-emitting surface comprises a light-emitting main surface and a diffusion sub-surface, and the diffusion sub-surface is arranged on at least part of the peripheral side of the light-emitting main surface; a reference plane lambda perpendicular to the parallel light rays is used as a projection plane, and the diffusion sub-plane is configured to diffuse the parallel light rays incident to the diffusion sub-plane, so that the area of an irradiation area, on the reference plane lambda, of the light rays emitted from the light emitting surface is larger than the orthographic projection area, on the reference plane lambda, of the light emitting surface. The light-emitting area of the second light guide part is increased through the diffusion effect of the diffusion sub-surface; and the overall lighting uniformity of the second light guide part is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle lighting technology, in particular to an optical module, a vehicle lamp and a vehicle. BACKGROUND

[0002] Automobile has always been the perfect combination of industry and aesthetics. As a part of the automobile exterior component, the vehicle lamp is also the embodiment of aesthetics in the design. Many OEMs now hope that the entire light-emitting surface of the vehicle lamp can be full, three-dimensional and uniform. However, the light-emitting surface of the traditional vehicle lamp is designed with a black edge of a certain black trim frame to block stray light so as to make the light-emitting surface emit light more uniformly, but the light-emitting area of the lamp is reduced.

[0003] Therefore, it is necessary to improve the prior art. CONTENT OF THE UTILITY MODEL

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

[0005] According to an aspect of the present application, an optical module is provided, comprising a first light guide component and a second light guide component; the first light guide component has a light-incident surface and a light-emitting surface, and is configured to adjust the light rays incident from the light-incident surface into parallel light rays and emit the parallel light rays to the light-emitting surface; the second light guide component is arranged on the light-emitting side of the first light guide component through a mounting member; the light-emitting surface comprises a light-emitting main surface and a diffusion sub-surface, at least part of the circumferential side of the light-emitting main surface is provided with the diffusion sub-surface; taking a reference plane λ perpendicular to the parallel light rays as a projection plane, the diffusion sub-surface is configured to diffuse the parallel light rays incident to the diffusion sub-surface, so that the area of the illumination area of the light rays emitted from the light-emitting surface on the reference plane λ is greater than the normal projection area of the light-emitting surface on the reference plane λ.

[0006] In one embodiment, the mounting member is provided with a blocking protrusion configured to block stray light rays emitted from the circumferential side of the light-emitting main surface without the diffusion sub-surface from being emitted to the second light guide component.

[0007] In one embodiment, the diffusion sub-surface is annularly arranged on the circumferential side of the light-emitting main surface.

[0008] In one embodiment, the parallel light rays have a first axis, the first axis is configured to pass through the connection between the light-emitting main surface and the diffusion sub-surface, and is parallel to the parallel light rays; in the direction from the first light guide component to the second light guide component, the distance from the diffusion sub-surface to the first axis gradually increases.

[0009] In one embodiment, the diffusion sub-faces are planar, and the diffusion sub-faces make an angle θ with the first axis, satisfying: 45°≤θ≤80°.

[0010] In one embodiment, θ=60°.

[0011] In one embodiment, the minimum distance from the side of the diffusion sub-faces away from the light-emitting main face to the first axis is L mm, and the distance L is proportional to the value of the angle θ.

[0012] According to another aspect of the present application, a vehicle lamp is provided, comprising the optical module as described above.

[0013] According to another aspect of the present application, a vehicle is provided, comprising the vehicle lamp as described above.

[0014] The beneficial effects of the present application are: the area of the illumination region of the light rays emitted from the light-emitting surface on the reference plane λ is greater than the area of the orthographic projection of the light-emitting surface on the reference plane λ, i.e., the light-emitting area of the second light guide component is increased by the diffusion effect of the diffusion sub-faces; in addition, the parallel light rays illuminating the diffusion sub-faces are diffused outward to the edge of the second light guide component by the diffusion sub-faces arranged at the edge of the light-emitting main face, thereby improving the uniformity of the overall lighting of the second light guide component, effectively improving the uniformity of the lighting of the vehicle lamp, and the lighting effect is more full and beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0015] The technical solutions and other beneficial effects of the present application will become apparent through the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0016] Figure 1 is a schematic diagram of the light propagation of a first light guide component and a second light guide component provided by an embodiment of the present application.

[0017] Figure 2 is Figure 1 is an enlarged view of A in FIG.

[0018] Figure 3 is Figure 1 is an enlarged view of A in FIG.

[0019] Figure 4 is another schematic diagram of the light propagation of a first light guide component and a second light guide component provided by an embodiment of the present application.

[0020] Figure 5 is a schematic diagram of the projection on a reference plane provided by an embodiment of the present application.

[0021] in the figure:

[0022] 10, first light guide component; 11, light entrance surface; 12, light exit surface; 121, light exit main surface; 122, diffusion sub-surface;

[0023] 20, second light guide component;

[0024] 30, mounting member; 31, shielding protrusion;

[0025] 40, parallel light. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 work fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, or electrical connection or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The optical module, vehicle lamp and vehicle in the present application will be described in detail below with reference to the drawings and specific embodiments.

[0029] In the prior art, the black edge of the black decorative frame blocks stray light to make the light-emitting surface emit light more uniformly, but reduces the light-emitting area of the lamp.

[0030] To solve the above technical problems, the present application provides an optical module, comprising a first light guide component and a second light guide component; the first light guide component has a light entrance surface and a light exit surface, and the first light guide component is configured to adjust the light rays incident from the light entrance surface into parallel light rays and emit the parallel light rays to the light exit surface; the second light guide component is arranged on the light exit side of the first light guide component through a mounting member; the light exit surface comprises a light exit main surface and a diffusion sub-surface, and at least part of the circumferential side of the light exit main surface is provided with the diffusion sub-surface; taking a reference plane λ perpendicular to the parallel light rays as a projection plane, the diffusion sub-surface is configured to diffuse the parallel light rays incident to the diffusion sub-surface, so that the light rays emitted from the light exit surface irradiate an area on the reference plane λ, and the area is greater than the normal projection area of the light exit surface on the reference plane λ. The following will be described in detail.

[0031] Referring to Figure 1 And Figure 5 In an embodiment, the optical module comprises a first light guide component 10 and a second light guide component 20; the first light guide component 10 has an incident light surface 11 and an exit light surface 12, and the first light guide component 10 is configured to adjust the light rays incident from the incident light surface 11 into parallel light rays 40 (standard parallel or approximately parallel) and emit them to the exit light surface 12; the second light guide component 20 is arranged on the exit light side of the first light guide component 10 through a mounting member 30; the exit light surface 12 comprises an exit light main surface 121 and a diffusion sub-surface 122, and at least part of the circumferential side of the exit light main surface 121 is provided with the diffusion sub-surface 122; taking a reference plane λ perpendicular to the parallel light rays 40 as a projection plane, the diffusion sub-surface 122 is configured to diffuse the parallel light rays 40 incident to the diffusion sub-surface 122, so that the area of the irradiation area of the light rays emitted from the exit light surface 12 on the reference plane λ is greater than the normal projection area of the exit light surface 12 on the reference plane λ.

[0032] As Figure 5 shown, in the reference plane λ, the area B is the area of the irradiation area of the light rays emitted from the exit light surface 12 on the reference plane λ, and the area C is the normal projection area of the exit light surface 12 on the reference plane λ; in this embodiment, the area C falls within the range of the area B, that is, the diffusion sub-surface 122 is arranged around the circumferential side of the exit light main surface 121, and the irradiation range of the diffusion-increased exit light main surface 121 is around the entire circumference; the diffusion sub-surface 122 is arranged around the circumferential side of the exit light main surface 121, that is, the diffusion sub-surface 122 is arranged around the entire circumference of the exit light main surface 121, and through the arrangement of the diffusion sub-surface 122, the uniformity of the overall lighting of the second light guide component 20 is ensured (the stray light rays irradiated on the circumferential side of the second light guide component 20 are supplemented by the refracted light rays of the diffusion sub-surface 122); and in this embodiment, no additional shielding bump 31 is needed, which reduces the production difficulty and cost of the mounting member 30 and improves the lighting area of the second light guide component 20 (the lighting area of the second light guide component 20 is increased to the four corners).

[0033] It should be noted that in some embodiments, the side edges of the area B and the area C can be overlapped, and are not limited thereto.

[0034] The parallel light 40 is diffused outwardly by the diffusion sub-surface 122, effectively increasing the light emitting area; the light emitted from the light emitting surface 12 irradiates an area on the reference plane λ which is larger than the orthographic projection of the light emitting surface 12 on the reference plane λ, that is, the diffusion effect of the diffusion sub-surface 122 increases the light emitting area of the second light guide component 20; in addition, the parallel light 40 irradiated on the diffusion sub-surface 122 is diffused outwardly to the edge (the area close to the boundary, the same below) of the second light guide component 20 by the diffusion sub-surface 122 arranged at the edge of the light emitting main surface 121, improving the uniformity of the light at the edge of the second light guide component 20 (that is, improving the uniformity of the overall lighting of the second light guide component 20), and further improving the uniformity of the overall lighting of the second light guide component 20, effectively improving the uniformity of the lighting of the vehicle lamp, and the lighting effect is more full and beautiful.

[0035] It should be noted that if the diffusion sub-surface 122 is not arranged, part of the stray light emitted from the first light guide component 10 will fall on the edge of the second light guide component 20, and due to the insufficient energy of the stray light, the part of the second light guide component 20 illuminated by the stray light (the edge of the second light guide component 20) is not uniform with the middle part of the second light guide component 20; by arranging the diffusion sub-surface 122, part of the parallel light 40 is refracted to the edge of the second light guide component 20 to make up the energy of the edge of the second light guide component 20, so that the energy of the edge of the second light guide component 20 is basically consistent with the energy of the middle part of the second light guide component 20, thereby improving the uniformity of the lighting of the second light guide component 20 and increasing the lighting area of the second light guide component 20.

[0036] Referring to Figure 4 In an embodiment, the mounting member 30 is provided with a shielding protrusion 31 configured to block stray light emitted from the edge of the light emitting main surface 121 without the diffusion sub-surface 122 from being irradiated to the second light guide component 20.

[0037] In this embodiment, the stray light emitted from the edge of the light emitting main surface 121 (the edge without the diffusion sub-surface 122) is blocked by the shielding protrusion 31, so as to avoid the stray light from irradiating to the second light guide component 20 to form a non-uniform lighting area, effectively improving the uniformity of the overall lighting of the second light guide component 20.

[0038] It should be noted that the specific position of the diffusion sub-surface 122 arranged at the edge of the light emitting main surface 121 can be set according to the actual lighting requirements of the vehicle lamp and other factors, and this embodiment is not limited in particular.

[0039] Referring to Figures 1-2In an embodiment, the parallel light 40 has a first axis, the first axis is configured to pass through the connection between the light-out main surface 121 and the diffusion sub-surface 122, and is parallel to the parallel light 40; in the direction from the first light guide component 10 to the second light guide component 20, the distance from the diffusion sub-surface 122 to the first axis gradually increases.

[0040] In the embodiment, the diffusion sub-surface 122 is outwardly expanded (as shown in Figure 2 The arrangement of the diffusion sub-surface 122 not only refracts part of the parallel light 40 to the outside for diffusion, but also does not block the light emitted by the light-out main surface 121, thereby ensuring the lighting brightness of the light-out main surface 121.

[0041] In addition, the arrangement of the diffusion sub-surface 122 facilitates the processing and molding of the first light guide component 10. For example, when the first light guide component 10 is processed by an injection molding method, the arrangement of the diffusion sub-surface 122 facilitates the demolding of the first light guide component 10, thereby improving the production efficiency.

[0042] It should be noted that the first axis is the middle line a Figure 1 (as shown by the line a1 and the line a2), and the same applies below. Figure 2 Figure 3

[0043] Referring to Figures 1-2 In an embodiment, the diffusion sub-surface 122 is a plane, and the angle between the diffusion sub-surface 122 and the first axis is θ, which satisfies: 45°≤θ≤80°, such as 45°, 50°, 60°, 70°, 80°, etc.

[0044] When the value of θ is less than 45°, the value of θ tends to the critical angle of refraction. When the value of θ is less than the critical angle, the light incident on the diffusion sub-surface 122 will be totally reflected, and cannot be refracted and diffused to increase the light-emitting area of the second light guide component 20. The smaller the value of θ, the sharper the structure formed by the connection between the diffusion sub-surface 122 and the side wall of the first light guide component 10, which is prone to cause personal injury during actual assembly, and is prone to knocking to reduce the effective area (the area for light diffusion) of the diffusion sub-surface 122, thereby affecting the diffusion effect of the diffusion sub-surface 122 on the light. When the value of θ is greater than 80°, the diffusion sub-surface 122 and the light-out main surface 121 tend to be coplanar, which is not conducive to the diffusion effect of the diffusion sub-surface 122 and the increase of the overall lighting area.

[0045] Therefore, when 45°≤θ≤80°, the overall lighting area can be effectively increased, and the production and assembly difficulty can be reduced.

[0046] It should be noted that the first axis is the middle line a Figure 2 ​​For example, the viewing angle, the greater the value of θ (the value in the range, the same below), the more the light rays refracted by the diffusion sub-surface 122 will be biased to the upper and lower sides (i.e., the deflection angle of the light rays is larger, the light rays on the upper side are more biased upward after being diffused by the upper diffusion sub-surface 122, and the light rays on the lower side are more biased downward after being diffused by the lower diffusion sub-surface 122), and the overall lighting area increases more; the smaller the value of θ, the more the light rays diffused by the diffusion sub-surface 122 will be biased to the right side (i.e., the deflection angle of the light rays is smaller, and the distance of the illumination is farther); therefore, the value of θ can be determined according to different shapes of the vehicle lamp light-emitting surface 12, different required illumination brightness, and other factors.

[0047] In some embodiments, the diffusion sub-surface 122 is provided with a plurality of diffusion sub-surfaces, and the corresponding included angle θ is also provided with a plurality of included angles, as shown in FIGS. 1A and 1B, denoted by θ1, θ2, and the like. Figure 2

[0048] Referring to FIG. 1A, Figures 2-3 In an embodiment, the minimum distance from the side of the diffusion sub-surface 122 away from the light-emitting main surface 121 to the first axis is L mm, and the value of the distance L is proportional to the value of the included angle θ.

[0049] In this embodiment, the distance L is the vertical distance from the side of the diffusion sub-surface 122 away from the light-emitting main surface 121 to the first axis, and the greater the distance L, the more parallel light rays 40 the diffusion sub-surface 122 receives. When the value of the included angle θ increases, the light rays diffused by the diffusion sub-surface 122 will be more biased to the upper and lower sides (detailed in the foregoing embodiment, which will not be repeated here), that is, the greater the value of the included angle θ, the greater the range of the vertical diffusion; if the light flux incident on the diffusion sub-surface 122 is constant, the greater the value of the included angle θ, the greater the range of the vertical diffusion, and the fewer the light rays diffused per unit length in the vertical direction, and the lower the brightness. In order to ensure the lighting brightness, the number of light rays diffused per unit length needs to be increased, which can be achieved by increasing the value of L, thereby increasing the light flux for refraction and ensuring the uniformity of the brightness.

[0050] When the value of the included angle θ decreases, the light rays diffused by the diffusion sub-surface 122 will be more biased to the right side, that is, the smaller the value of the included angle θ, the smaller the range of the vertical diffusion; if the light flux incident on the diffusion sub-surface 122 is constant, the smaller the value of the included angle θ, the greater the number of light rays diffused per unit length in the vertical direction, and the brighter the brightness. In order to ensure the uniformity of the brightness, the number of light rays diffused per unit length needs to be reduced, which can be achieved by reducing the value of L, thereby reducing the light flux for refraction and ensuring the uniformity of the brightness.

[0051] Therefore, the value of the distance L is proportional to the value of the included angle θ, which is beneficial to the uniformity of the overall lighting; as shown in FIGS. 1A and 1B, Figure 2 and Figure 3 When θ1> θ2, L1> L2.​

[0052] In another aspect, the present application also relates to a vehicle lamp comprising any of the optical modules mentioned above.

[0053] In another aspect, the present application also relates to a vehicle comprising any of the vehicle lamps mentioned above.

[0054] According to the technical scheme provided by the embodiments of the present application, the light rays emitted from the light emitting surface 12 irradiate an area on the reference plane λ which is larger than the normal projection area of the light emitting surface 12 on the reference plane λ, that is, the diffusing effect of the diffusing sub-surface 122 increases the light emitting area of the second light guide component 20; in addition, the parallel light rays 40 irradiated on the diffusing sub-surface 122 are diffused outward to the edge of the second light guide component 20 through the diffusing sub-surface 122 arranged at the edge of the light emitting main surface 121, thereby improving the uniformity of the overall lighting of the second light guide component 20, effectively improving the uniformity of the lighting of the vehicle lamp, and the lighting effect is more full and beautiful.

[0055] In the various embodiments of the present application, the terms or descriptions of different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict, and 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 "multiple" means two or more.

[0056] It can be understood that the various numbers involved in the embodiments of the present application are only for the convenience of differentiation, and do not limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic.

[0057] The optical module, vehicle lamp and vehicle provided by the embodiments of the present application are described in detail above, and the principles and implementation modes of the present application are described by applying specific examples; the above embodiment descriptions are only used to help understand the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as limiting the present application.

Claims

1. An optical module, characterized by comprising: Comprising: a first light guide component having an incident light surface and an emergent light surface, the first light guide component configured to adjust light rays incident from the incident light surface into parallel light rays and direct the parallel light rays toward the emergent light surface; and a second light guide component disposed on the emergent light side of the first light guide component via a mounting member; the emergent light surface comprises an emergent light main surface and a diffusion sub-surface, at least a portion of a peripheral side of the emergent light main surface is provided with the diffusion sub-surface; with a reference plane λ perpendicular to the parallel light rays as a projection plane, the diffusion sub-surface is configured to diffuse the parallel light rays incident to the diffusion sub-surface, so that the light rays emitted from the emergent light surface irradiate an area on the reference plane λ with an area greater than a normal projection area of the emergent light surface on the reference plane λ.

2. The optical module of claim 1, wherein the mounting member is provided with a blocking protrusion configured to block stray light rays emitted from a peripheral side of the emergent light main surface not provided with the diffusion sub-surface from being directed toward the second light guide component.

3. The optical module of claim 1, wherein the diffusion sub-surface is annularly provided on the peripheral side of the emergent light main surface.

4. The optical module of claim 1, wherein the parallel light rays have a first axis configured to pass through a connection between the emergent light main surface and the diffusion sub-surface and be parallel to the parallel light rays; and in a direction from the first light guide component toward the second light guide component, a distance from the diffusion sub-surface to the first axis gradually increases.

5. The optical module of claim 4, wherein the diffusion sub-surface is a plane, and an included angle between the diffusion sub-surface and the first axis is θ, satisfying 45°≤θ≤80°.

6. The optical module of claim 5, wherein θ=60°.

7. The optical module of claim 5, wherein a minimum distance from a side of the diffusion sub-surface away from the emergent light main surface to the first axis is L mm, and the distance L is directly proportional to the included angle θ. An optical module comprising any one of claims 1 to 7.

8. A vehicle lamp characterized by A vehicle lamp comprising the optical module of claim 8.

9. A vehicle characterized by comprising: ​

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