Light mirror, illumination device and vehicle
By setting a stepped surface at the connection of the light-emitting area of the lamp, the flow path of water droplets is changed, the dripping phenomenon is solved, the aesthetics and anti-fog performance of the lamp are improved, the service life is extended and the optical performance is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-03
AI Technical Summary
Car lights are prone to dripping during use, which affects their appearance and anti-fog performance, and may also cause light scattering, reducing driving safety.
A stepped surface is set at the connection between the first and second light-emitting areas of the lamp to change the flow path of the water droplets, so that they drip directly under the action of gravity and avoid sliding down the second light-emitting area.
It reduces sag, improves the aesthetics and lifespan of the lamps, and enhances the anti-fog effect and optical performance.
Smart Images
Figure CN224080037U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and more particularly to a lens, a lighting device, and a vehicle. Background Technology
[0002] In modern automotive design, lighting fixtures are not only key components for achieving illumination and signal indication, but also significantly influence the overall aesthetics and brand recognition of the vehicle. Therefore, automakers have placed higher demands on the appearance and performance of lighting fixtures.
[0003] Automotive lights are subject to various environmental factors during use, such as temperature changes, humidity fluctuations, and the intrusion of external pollutants. These factors can cause fogging inside the lights, affecting their optical performance and appearance. Fogging not only reduces light transmittance but can also cause light scattering, impacting driving safety.
[0004] To address the fogging problem, the industry typically employs an anti-fog coating applied to the inner surface of the lighting fixture. This anti-fog coating alters the surface's hydrophilicity, causing water vapor to form a uniform water film instead of droplets, thereby reducing light scattering.
[0005] However, during long-term use, the lens of a luminaire with both horizontal and vertical extensions is prone to sagging (e.g. Figure 1 As shown, when the horizontal part of the lens is exposed to temperature differences between the inside and outside, water vapor is more likely to accumulate and condense inside. This causes hydrophilic molecules in the anti-fog coating to be released and flow down along the vertical extension of the lens. After the water droplets dry, they leave tear-like marks. This not only affects the aesthetics of the lamp but may also further reduce its anti-fog performance and lower the quality of the lamp. Utility Model Content
[0006] In view of this, embodiments of this application provide a lens, a lighting device, and a vehicle. By setting a stepped surface at the connection between the first light-emitting area and the second light-emitting area, even if water droplets are formed in the first light-emitting area, when the water droplets slide to the stepped surface, due to the presence of the step, the water droplets will drip directly under the action of gravity and will not slide down along the second light-emitting area. This reduces the occurrence of dripping phenomena in the second light-emitting area, which is beneficial to improving the aesthetics of the lamp and also helps to extend the service life of the lamp.
[0007] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:
[0008] On one hand, embodiments of this application provide a light-emitting lens for a light-emitting cavity of an illumination device, comprising:
[0009] The lens body has an inner surface facing into the light-emitting cavity and an outer surface facing out of the light-emitting cavity. The lens includes a first light-emitting region and a second light-emitting region distributed from top to bottom. There is an angle between the inner surface of the first light-emitting region and the inner surface of the second light-emitting region. The angle is greater than 90° and less than 180°. At the connection between the first light-emitting region and the second light-emitting region, the inner surface forms a downward stepped surface. An anti-fog coating covers at least the inner surface of the first light-emitting region.
[0010] The lens of this application effectively alters the water vapor flow path by providing a downward-facing stepped surface at the junction of the first and second light-emitting areas. Under the influence of gravity, water droplets will drip directly instead of sliding down the second light-emitting area, reducing the likelihood of dripping in that area. This improves the aesthetics of the luminaire and extends its lifespan.
[0011] In some embodiments, at least a portion of the inner surface of the first light-emitting region protrudes inwardly from the inner surface of the second light-emitting region to form the stepped surface at the junction of the first light-emitting region and the second light-emitting region.
[0012] In this way, by making at least a portion of the inner surface of the first light-emitting region protrude inward beyond the inner surface of the second light-emitting region, a distinct stepped surface is formed. This structural design helps to create a physical barrier between the first and second light-emitting regions, reducing the accumulation and flow of water vapor on the inner surface, thereby enhancing the anti-fogging effect.
[0013] According to some embodiments of this application, at the junction of the first light-emitting region and the second light-emitting region, the thickness of the first light-emitting region is greater than the thickness of the second light-emitting region.
[0014] By creating a thickness difference between the first and second light-emitting areas, additional physical support is provided for the luminaire, making the lens more resistant to external impacts and vibrations during use, thereby improving the luminaire's durability. Furthermore, the different thicknesses of the first and second light-emitting areas allow for more precise control over light refraction and reflection: the greater thickness of the first light-emitting area helps to better focus and guide the light, thus optimizing light distribution and intensity, and improving the luminous efficacy and lighting quality of the vehicle headlights.
[0015] According to some embodiments of this application, at the connection between the first light-emitting region and the second light-emitting region, the outer surfaces of the first light-emitting region and the second light-emitting region smoothly transition.
[0016] On the one hand, the smooth transition between the outer surfaces of the first and second light-emitting areas helps eliminate obvious boundaries or discontinuities, making the lamps look more refined and enhancing the overall aesthetics of the vehicle. On the other hand, the smooth transition surface also reduces the accumulation of dust, dirt, and moisture, helping to maintain the cleanliness and transparency of the lamps, reducing the frequency of lamp maintenance and cleaning, and thus extending the lifespan of the lamps.
[0017] In some embodiments, the stepped surface has an inward-facing first end and an outward-facing second end, the first end being flush with the second end in the horizontal direction, or the first end being higher than the second end.
[0018] This design helps guide water droplets condensing on the first light-emitting area to fall directly from the first end, preventing them from sliding down the second light-emitting area. This reduces the likelihood of water dripping in the second light-emitting area, improving the aesthetics of the lamp and extending its lifespan.
[0019] According to some embodiments of this application, the width of the stepped surface along the thickness direction of the mirror body is 0.2mm-0.5mm. On the one hand, this avoids the stepped surface being too narrow (e.g., less than 0.2mm), which would reduce the guiding effect on water droplet flow, causing water droplets to still flow along the second light-emitting area, forming a drip phenomenon and affecting the aesthetics of the lamp. On the other hand, this avoids the stepped surface being too wide (e.g., more than 0.5mm), reducing unnecessary material usage and contributing to the lightweighting of the lamp.
[0020] According to some embodiments of this application, the anti-fog coating also covers the inner surface of the second light-emitting region.
[0021] This design provides anti-fogging protection for the entire inner surface of the lens, reducing fogging within the luminaire and ensuring its optical performance and clarity. Applying an anti-fogging coating to both the first and second light-emitting areas further enhances the optical consistency of the entire inner surface of the lens. This ensures that the refraction and reflection characteristics of light remain consistent across different light-emitting areas, thereby improving the overall luminous efficacy and lighting quality of the luminaire.
[0022] According to some embodiments of this application, the first light-emitting region is located at the top of the light-emitting cavity, and the second light-emitting region is opposite to the light source of the lighting device.
[0023] Thus, the first light-emitting area is located at the top of the light-emitting cavity, which helps optimize the guidance and distribution of light, achieving a more uniform and efficient lighting effect. The second light-emitting area is directly opposite the light source, ensuring that the light emitted by the light source can pass through the lens to the maximum extent. This design improves the luminous efficacy and brightness of the headlights, providing drivers with a clearer field of vision and better road illumination.
[0024] Secondly, embodiments of this application also provide a lighting device, comprising: a light source; a lampshade defining a light-emitting cavity, the light source being located on the light-incident side of the light-emitting cavity; and the aforementioned light-distributing lens being disposed on the light-emitting side of the light-emitting cavity.
[0025] The lighting device of this application, by incorporating the aforementioned lens, reduces the occurrence of sags, which improves the aesthetics of the lighting device, prevents sags from affecting its quality, and extends its service life.
[0026] Thirdly, embodiments of this application also provide a vehicle, including the aforementioned lighting device.
[0027] The vehicle described in this application, due to the use of the aforementioned lighting device, reduces the occurrence of sags in the lighting device, resulting in a more aesthetically pleasing appearance and improved user satisfaction. At the same time, it helps to reduce uneven distribution of the guiding light from the lens caused by sags, thereby improving the vehicle's driving safety. Attached Figure Description
[0028] Figure 1 This is a schematic diagram illustrating the dripping phenomenon on the lens in related technologies;
[0029] Figure 2 This is a schematic diagram of the structure of the lighting device according to an embodiment of this application;
[0030] Figure 3 yes Figure 2 A magnified structural diagram of point A in the middle.
[0031] Figure label:
[0032] 100-optical glasses;
[0033] 110 - Mirror body; 110a - Inner surface; 110b - Outer surface; 111 - First light-emitting area; 112 - Second light-emitting area; 113 - Stepped surface; 113a - First end; 113b - Second end;
[0034] 200-Lighting devices;
[0035] 210 - Light source;
[0036] 220 - Lampshade; 221 - Light-emitting cavity. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.
[0038] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.
[0039] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.
[0040] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.
[0041] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0042] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0043] In existing technologies, during long-term use, the lens of a luminaire with both horizontal and vertical extensions is prone to sagging. When exposed to temperature differences between the inside and outside, water vapor more easily accumulates and condenses on the horizontal portion of the lens, causing hydrophilic molecules from the anti-fog coating to leach out and flow down the vertical extension. After the water droplets dry, they leave tear-like marks. This not only affects the aesthetics of the luminaire but may also further reduce its anti-fog performance and lower the overall quality of the luminaire.
[0044] In view of this, embodiments of this application provide a lens, a lighting device, and a vehicle. By setting a stepped surface at the connection between the first light-emitting area and the second light-emitting area, even if water droplets are formed in the first light-emitting area, when the water droplets slide to the stepped surface, due to the presence of the step, the water droplets will drip directly under the action of gravity and will not slide down along the second light-emitting area. This reduces the occurrence of dripping phenomena in the second light-emitting area, which is beneficial to improving the aesthetics of the lamp and also helps to extend the service life of the lamp.
[0045] refer to Figure 2 and Figure 3 On the one hand, this application provides a light distribution lens 100 for the light-emitting cavity 221 of the lighting device 200. The light distribution lens 100 may include a lens body 110 and an anti-fog coating.
[0046] The mirror body 110 can be located on the light-emitting side of the light-emitting cavity 221. When the lighting device 200 is turned on, the light emitted by the light source 210 is guided by the mirror body 110 and evenly illuminates the front area of the vehicle, providing users with good lighting effects and improving driving safety.
[0047] The mirror body 110 may have an inner surface 110a and an outer surface 110b, with the inner surface 110a facing into the light-emitting cavity 221 and the outer surface 110b facing out of the light-emitting cavity 221. The light emitted by the light source 210 passes through the inner surface 110a, passes through the mirror body 110, and exits from the outer surface 110b.
[0048] The lens 100 includes a first light-emitting region 111 and a second light-emitting region 112 distributed from top to bottom. An angle is formed between the inner surfaces 110a of the first light-emitting region 111 and the second light-emitting region 112, which is greater than 90° and less than 180°. For example, the angle can be 100°, 110°, 120°, 130°, 140°, 150°, 160°, or 170°. Of course, the angle between the inner surfaces 110a of the first light-emitting region 111 and the second light-emitting region 112 can also be other angles; this embodiment does not limit this. In other words, the angle between the first light-emitting region 111 and the second light-emitting region 112 is an obtuse angle. This helps to optimize the distribution of light, allowing the light to be projected more evenly onto the desired area, providing the user with good illumination and improving driving safety.
[0049] At the junction of the first light-emitting region 111 and the second light-emitting region 112, a downward-facing stepped surface 113 is formed on the inner surface 110a. For example, the portion of the surface of the first light-emitting region 111 near the second light-emitting region 112 may protrude inwards towards the light-emitting cavity 221 to form the stepped surface 113. Alternatively, the portion of the surface of the second light-emitting region 112 near the first light-emitting region 111 may be recessed outwards towards the light-emitting cavity 221 to form the stepped surface 113. The stepped surface 113 alters the flow direction of water droplets formed in the first light-emitting region 111, causing the water droplets to drip directly along one end of the stepped surface 113 (such as the first end 113a described later) under the influence of gravity, preventing them from flowing towards the second light-emitting region 112 and thus reducing dripping.
[0050] The anti-fog coating covers at least the inner surface 110a of the first light-emitting area 111. By applying the anti-fog coating to the inner surface 110a of the first light-emitting area 111, water vapor can be effectively prevented from condensing into water droplets on the inner surface 110a, reducing the occurrence of fogging. This helps maintain the optical performance of the vehicle lighting device, ensuring good lighting effect and signal indication function. Of course, the anti-fog coating can also be applied to other areas of the lens 100 (such as the second light-emitting area 112) to ensure that the entire lens body 110 has good anti-fog performance.
[0051] The lens 100 of this application effectively alters the water vapor flow path by providing a downward-facing stepped surface 113 at the junction of the first light-emitting region 111 and the second light-emitting region 112. The stepped surface 113 helps change the flow direction of water droplets; under the influence of gravity, the water droplets will drip directly instead of sliding down the second light-emitting region 112, reducing the likelihood of dripping in the second light-emitting region 112. This improves the aesthetics of the lighting device 200 and also extends its service life.
[0052] In some embodiments, at least a portion of the inner surface 110a of the first light-emitting region 111 (such as the surface of the first light-emitting region 111 near the second light-emitting region 112) protrudes inwardly from the inner surface 110a of the second light-emitting region 112, forming a stepped surface 113 at the junction of the first light-emitting region 111 and the second light-emitting region 112. Thus, by making at least a portion of the inner surface 110a of the first light-emitting region 111 protrude inwardly from the inner surface 110a of the second light-emitting region 112, a distinct stepped surface 113 is formed. This structural design helps to form a physical barrier between the first light-emitting region 111 and the second light-emitting region 112, reducing the accumulation and flow of moisture on the inner surface 110a, thereby enhancing the anti-fogging effect.
[0053] Furthermore, in order to enhance the effect of changing the direction of water droplet flow at the step surface 113, the surface of the first light-emitting region 111 near the step surface 113 can be set as an arc surface, so that when the water droplet slides to the vicinity of the step surface 113, it has an inertial force towards the light-emitting cavity 221, further reducing the possibility of the water droplet sliding to the second light-emitting region 112.
[0054] According to some embodiments of this application, at the junction of the first light-emitting region 111 and the second light-emitting region 112, the thickness of the first light-emitting region 111 is greater than the thickness of the second light-emitting region 112. This makes the first light-emitting region 111 thicker, which provides additional physical support for the lighting device 200, making the lens 100 more resistant to external impacts and vibrations during use, thereby improving the durability of the lighting device 200. Furthermore, the different thicknesses of the first light-emitting region 111 and the second light-emitting region 112 allow for more precise control over the refraction and reflection of light: the larger thickness of the first light-emitting region 111 helps to better focus and guide light, thereby optimizing the distribution and intensity of light and improving the luminous efficacy and lighting quality of the vehicle lamp. Moreover, due to the greater thickness of the first light-emitting region 111, the anti-fog coating adheres more strongly in this area, reducing the precipitation of hydrophilic molecules in the anti-fog coating under the action of water mist. This helps to maintain the cleanliness and transparency of the inner surface 110a of the lighting device 200, reducing the formation of tear-like marks.
[0055] According to some embodiments of this application, at the junction of the first light-emitting region 111 and the second light-emitting region 112, the outer surfaces 110b of the first light-emitting region 111 and the second light-emitting region 112 smoothly transition. On one hand, this smooth transition helps eliminate obvious boundaries or discontinuities, making the lighting device 200 appear more refined and enhancing the overall aesthetics of the vehicle. On the other hand, the smooth transition surface also reduces the accumulation of dust, dirt, and moisture, helping to maintain the cleanliness and transparency of the headlights, reducing the frequency of maintenance and cleaning of the lighting device 200, and thus extending the service life of the lighting device 200.
[0056] In some embodiments, the stepped surface 113 has an inward-facing first end 113a and an outward-facing second end 113b, with the first end 113a and the second end 113b being flush in the horizontal direction. This facilitates the guidance of water droplets condensed on the first light-emitting area 111 to fall directly from the first end 113a, preventing them from sliding down the second light-emitting area 112. This reduces the likelihood of dripping in the second light-emitting area 112, improves the aesthetics of the lighting device 200, and also helps extend the service life of the lighting device 200.
[0057] Alternatively, the first end 113a can be higher than the second end 113b, making it easier for water droplets under gravity to flow along a preset path, rather than forming irregular drips on the inner surface 110a of the second light-emitting area 112. This helps reduce the formation of tear-like marks and maintains the aesthetics of the lamp.
[0058] According to some embodiments of this application, the width of the step surface 113 along the thickness direction of the mirror body 110 is 0.2mm-0.5mm. Exemplarily, the width of the step surface 113 can be 0.2mm, 0.3mm, 0.4mm, or 0.5mm. Of course, the width of the step surface 113 can also be other values, which designers can select according to their needs.
[0059] On the one hand, it is important to avoid making the stepped surface 113 too narrow (e.g., less than 0.2mm), as this would reduce the guiding effect on the flow of water droplets, causing them to still flow along the second light-emitting area 112 and resulting in dripping, which would affect the aesthetics of the lighting device 200. On the other hand, it is important to avoid making the stepped surface 113 too wide (e.g., more than 0.5mm), as this would reduce unnecessary material usage and help achieve a lightweight design for the lighting device 200.
[0060] According to some embodiments of this application, the anti-fog coating also covers the inner surface 110a of the second light-emitting region 112. This ensures that the entire inner surface 110a of the lens 100 is protected against fogging, which helps reduce fogging within the lighting device 200 and ensures the optical performance and clarity of the lighting device 200. Applying the anti-fog coating to both the first light-emitting region 111 and the second light-emitting region 112 improves the optical consistency of the entire inner surface 110a of the lens 100. This, in turn, ensures that the refraction and reflection characteristics of light remain consistent when passing through different light-emitting regions, thereby improving the overall luminous efficacy and lighting quality of the lighting device 200.
[0061] According to some embodiments of this application, the first light-emitting region 111 is located at the top of the light-emitting cavity 221, which helps to optimize the guidance and distribution of light, achieving a more uniform and efficient lighting effect. Furthermore, since the first light-emitting region 111 is located at the top of the light-emitting cavity 221, the water droplets formed are more likely to flow towards the stepped surface 113 under the influence of gravity, which helps to prevent water droplets from accumulating in the first light-emitting region 111.
[0062] The second light-emitting area 112 is opposite to the light source 210 of the lighting device 200, ensuring that the light emitted by the light source 210 can pass through the lens 100 to the maximum extent. This design improves the luminous efficiency and brightness of the lighting device 200, providing drivers with a clearer field of vision and better road lighting.
[0063] Secondly, embodiments of this application also provide a lighting device 200, which may include a light source 210, a lampshade 220, and the aforementioned lens 100.
[0064] The lampshade 220 defines the light-emitting cavity 221, and the light source 210 is located on the light-incident side of the light-emitting cavity 221; the light distribution lens 100 is located on the light-emitting side of the light-emitting cavity 221.
[0065] The light source 210 can be a halogen bulb, a xenon lamp, a light-emitting diode, or a laser headlight, etc. Designers can choose according to their needs, and this embodiment does not impose any restrictions on this.
[0066] Optionally, the lighting device 200 may also include a reflector, which may be set on the upper and lower sides of the light source 210 to reflect and converge the light emitted by the light source 210, so that the light can be projected onto a specific area (such as the light distribution lens 100) according to the design requirements, thereby improving the lighting efficiency and effect.
[0067] It is important to note that the shape and structure of the reflectors for different types of lamps (such as headlights) are designed according to lighting requirements. Common examples include parabolic reflectors, which can focus light into parallel beams or specific light distribution patterns.
[0068] In use, the lighting device 200 of this application emits light from the light source 210, which shines onto the lens 100. The light is then guided and distributed by the lens 100 and exits from its outer surface 110b to provide illumination to the user. The use of the lens 100 reduces the occurrence of sags in the lighting device 200, improving its aesthetics and preventing sags from affecting its quality, thus extending its lifespan.
[0069] On the other hand, this application also provides a vehicle. In this embodiment, a vehicle can refer to a large car, a small car, a special-purpose vehicle, etc. For example, according to the power type, the vehicle in this application can be a pure electric vehicle, a hybrid vehicle, a fuel vehicle, etc. For fuel vehicles, the power source can refer to a gasoline engine, a diesel engine, or other fuel engines; for electric vehicles, the power source can refer to an electric motor; for hybrid electric vehicles, the power source can refer to an engine or an electric motor; for vehicles powered by other means, the power source can refer to a device that generates power. According to the vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles.
[0070] The vehicle of this embodiment may include a vehicle body and the aforementioned lighting device 200. Specifically, the vehicle body has a frame, and the lighting device 200 may be located on the left and right sides of the front and rear ends of the frame.
[0071] The vehicle described in this application, due to the use of the aforementioned lighting device 200, reduces the occurrence of sags on the lighting device 200, resulting in a more aesthetically pleasing appearance and improved user satisfaction. At the same time, it helps to reduce the uneven distribution of guiding lights on the lens 100 caused by sags, thereby improving the vehicle's driving safety.
[0072] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A light distribution mirror for a light emitting cavity of a lighting device, characterized in that, The light distribution mirror comprises a first light exit area and a second light exit area distributed from top to bottom, an included angle between the inner surface of the first light exit area and the inner surface of the second light exit area is greater than 90° and less than 180°, and a downward step surface is formed at the junction of the first light exit area and the second light exit area; The anti-fog coating covers at least the inner surface of the first light exit area. At least part of the inner surface of the first light exit area protrudes inwardly from the inner surface of the second light exit area to form the step surface at the junction of the first light exit area and the second light exit area.
2. The light guide of claim 1, wherein At the junction of the first light exit area and the second light exit area, the thickness of the first light exit area is greater than the thickness of the second light exit area.
3. The light guide of claim 2, wherein At the junction of the first light exit area and the second light exit area, the outer surface of the first light exit area and the outer surface of the second light exit area smoothly transition.
4. The light guide of claim 3, wherein The step surface has a first end facing inwardly and a second end facing outwardly, the first end is flush with the second end in the horizontal direction, or the first end is higher than the second end.
5. The light guide of any of claims 1-4, wherein, In the thickness direction of the mirror, the width of the step surface is 0.2-0.5 mm.
6. The light guide of any of claims 1-4, wherein, The anti-fog coating also covers the inner surface of the second light exit area.
7. The light guide of any of claims 1-4, wherein, The first light exit area is located at the top of the light emitting cavity, and the second light exit area is opposite to the light source of the lighting device.
8. The light guide of any of claims 1-4, wherein, The lighting device comprises:
9. An illumination device, characterized by A light source; A lampshade defining a light emitting cavity, the light source being located at the light entrance side of the light emitting cavity; The light distribution mirror of any one of claims 1-8 is arranged at the light exit side of the light emitting cavity. The lighting device of claim 9 is included.
10. A vehicle characterized by comprising: