Optical element, optical system and vehicle

Abstract

The utility model provides an optical element, an optical system and a vehicle, and relates to the technical field of vehicle lamps, the optical element comprises a light-transmitting part, the light-transmitting part comprises a light-in surface and a light-out surface which are oppositely arranged, and a side wall surface adjacent to the light-out surface; the dimming structure is positioned on the side wall surface of the light-transmitting part; the first light incident to the side wall surface through the light incident surface can form divergent light emitted to the observation area after passing through the dimming structure. By arranging the dimming structure on the side wall surface of the light-transmitting part, light originally concentrated on the side wall surface can be dispersed by the dimming structure and continuously propagated at various angles, so that obvious brightness difference caused by local over-brightness due to concentrated propagation of the light at the position can be relieved, the light is more uniform, the lighting effect of the optical element is better, and the service life of the optical element is prolonged. The glare risk to traffic participants is reduced; and meanwhile, the risk that the service life of the optical element is shortened due to over-high temperature of a local area caused by local light convergence of the optical element can be reduced.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, and more specifically, to an optical element, an optical system, and a vehicle. Background Technology

[0002] Automotive lights are crucial devices for ensuring safe driving, serving both illumination and signaling functions: headlights provide road lighting to ensure visibility, while turn signals, brake lights, and side marker lights convey the vehicle's driving intentions (such as turning, braking, and warning) through specific light signals. Their design must comply with relevant regulations to ensure that parameters such as brightness and illumination angle are reasonable. Meanwhile, with technological advancements, new products such as LED and adaptive headlights are gradually becoming more widespread, improving lighting efficiency and safety while incorporating more intelligent and personalized elements.

[0003] Existing traffic lights illuminate to display vehicle information to other road users. Currently, traffic light designs must meet various requirements, including vehicle shape. Therefore, when illuminated, some light tends to converge on the sidewall of the light-emitting section, causing significant differences in brightness between different illuminated areas. This not only makes bright spots easily observable from the outside but also hinders other road users from quickly and accurately recognizing the information displayed by the traffic lights. Utility Model Content

[0004] The purpose of this application is to provide an optical element, an optical system, and a vehicle, addressing the shortcomings of the prior art described above.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In one aspect of this application, an optical element is provided, comprising: a light-transmitting portion, the light-transmitting portion including an incident light surface and an exit light surface disposed opposite to each other, and a side wall surface adjacent to the exit light surface; a dimming structure, the dimming structure being located on the side wall surface of the light-transmitting portion; and a first light ray incident on the side wall surface through the incident light surface being able to form a diverging light emitted to the observation area after passing through the dimming structure.

[0007] Optionally, the dimming structure has at least one optical surface, which may be convex or concave.

[0008] Optionally, the dimming structure includes multiple optical surfaces, which are arranged sequentially along the optical axis perpendicular to the light-transmitting part, and adjacent optical surfaces are sequentially adjacent to each other.

[0009] Optionally, the light-transmitting part has a thick wall, and a first light-uniforming structure is provided on the light-incident surface. The second light rays incident on the light-incident surface are diffused by the first light-uniforming structure and then emitted from the light-out surface to the observation area.

[0010] Optionally, the light-transmitting part is configured to be installed into the mounting holes of the body panel, with the light-emitting surface of the light-transmitting part exposed relative to the body panel.

[0011] Optionally, a mounting part is also provided on the side wall of the light-transmitting part, which is engaged with the body panel.

[0012] In another aspect of this application, an optical system is provided, including a light source and a reflector and the aforementioned optical elements arranged sequentially along the optical path. The optical elements include a light-transmitting portion. The light emitted by the light source includes a first light ray and a second light ray. The first light ray is reflected by the reflector and then enters the dimming structure through the light-incident surface of the light-transmitting portion, and exits in the form of diverging light. Alternatively, the first light ray is reflected by the reflector and then enters the dimming structure through the light-incident surface of the light-transmitting portion, where it is reflected and diverged, and then transmitted to the light-exiting surface of the light-transmitting portion before exiting. The second light ray is reflected by the reflector and then enters the light-incident surface of the light-transmitting portion, and exits through the light-exiting surface of the light-transmitting portion to the observation area.

[0013] Optionally, the light source includes a plurality of light-emitting elements arranged in sequence, and the reflector includes a reflective surface disposed corresponding to the light source; each reflective surface includes a plurality of sub-reflective surfaces arranged in sequence, adjacent sub-reflective surfaces are connected by steps connected in sequence, and the light-emitting elements are disposed corresponding to the sub-reflective surfaces and disposed at or near the focal point of the sub-reflective surfaces.

[0014] Optionally, the sub-reflective surface has multiple lattice surfaces arranged in a matrix.

[0015] Optionally, a reflective sidewall is provided on at least one side of the reflector, and the reflective sidewall and the reflector enclose a reflective cavity, with the light source located inside the reflective cavity; a second light-uniforming structure located inside the reflective cavity is provided on the reflective sidewall.

[0016] Optionally, the optical system also includes a circuit board for setting the light source, and a light-blocking structure is provided on the circuit board; along the light-emitting direction of the optical system, the light-blocking structure is located in front of the light source, and the light-blocking structure is configured to block the third light rays that are directly emitted from the light source to the light-transmitting part.

[0017] This application also provides a vehicle, including a body panel and the aforementioned optical system, wherein the light-transmitting part of the optical system is installed in the mounting hole of the body panel.

[0018] The beneficial effects of this application include:

[0019] This application provides an optical element, an optical system, and a vehicle, including a light-transmitting part and a dimming structure disposed on the side wall of the light-transmitting part. Most of the light emitted by the light source propagates through the light-emitting surface of the light-transmitting part to the observation area, while some light rays illuminate the side wall of the light-transmitting part, forming light spots. By providing a dimming structure on the side wall of the light-transmitting part, the light rays originally concentrated on the side wall can be dispersed by the dimming structure and continue to propagate at multiple angles. This can alleviate the obvious difference in brightness caused by localized overbrightness due to concentrated light propagation at that location, resulting in more uniform light, better illumination of the optical element, and reduced glare risk to traffic participants. At the same time, it can also reduce the risk of reduced lifespan of the optical element due to excessively high local temperatures caused by localized light convergence. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an optical element provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the dimming structure provided in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the light-incident surface provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the structure of an optical system provided in an embodiment of this application;

[0025] Figure 5 A schematic diagram of the optical path of a first ray in an optical system provided in an embodiment of this application;

[0026] Figure 6 A schematic diagram of the optical path of a second ray in an optical system provided in this application embodiment;

[0027] Figure 7 This is a schematic diagram of the structure of the reflector and reflective sidewall provided in the embodiments of this application;

[0028] Figure 8 This is a schematic diagram of the specific structure of the reflective surface provided in an embodiment of this application.

[0029] Icons: 100-Optical element; 110-Light-transmitting part; 1101-Light-incident surface; 1102-Light-exiting surface; 1103-Side wall surface; 1104-First light-uniforming structure; 120-Light-dimming structure; 1201-Optical surface; 200-Optical system; 210-Light source; 2101-First ray; 2102-Second ray; 220-Light-emitting element; 230-Reflector; 2301-Reflective surface; 2302-Sub-reflective surface; 2303-Grid surface; 2304-Step; 240-Reflective side wall; 2401-Second light-uniforming structure; 250-Reflective cavity; 260-Circuit board; 2601-Light-blocking structure; 270-Lamp housing. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, in the absence of conflict, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In this application, "lateral" refers to the left-right direction, i.e., the width direction of the vehicle, with the vehicle as the reference.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Current traffic light designs need to meet various conditions, such as vehicle styling. Therefore, after they are turned on, some light tends to converge on the side wall of the light-emitting part of the traffic light, resulting in obvious differences in brightness between different illuminated areas. Not only are bright spots easily observable from the outside, but the significant changes in brightness can also affect other road users' ability to quickly and accurately identify the information displayed by the traffic light.

[0034] To avoid significant differences in brightness between different illuminated areas of optical systems such as traffic lights, this application provides a dimming structure on the side wall of the light-transmitting part of the optical element. When the optical system is lit, some of the light rays that converge on the side wall of the light-transmitting part are redirected by the dimming structure to change their propagation path. The light rays are dispersed by the dimming structure, allowing the originally converged light rays to continue propagating at multiple different angles. This alleviates the adverse phenomenon of localized overbrightness caused by light convergence in the area, resulting in uniform light emission from the optical system and no significant differences in brightness between different illuminated areas.

[0035] like Figure 1 and Figure 2 As shown, in one aspect of this application embodiment, an optical element 100 is provided, including: a light-transmitting portion 110, the light-transmitting portion 110 including an incident light surface 1101 and an exit light surface 1102 disposed opposite to each other, and a side wall surface 1103 adjacent to the exit light surface 1102; a dimming structure 120, the dimming structure 120 being located on the side wall surface 1103 of the light-transmitting portion 110; a first light ray 2101 incident on the side wall surface 1103 through the incident light surface 1101 can form a diverging light emitted to the observation area after passing through the dimming structure 120.

[0036] Specifically, the light-transmitting part 110 is disposed in the optical path, so that when the light (i.e., the subsequent second light ray 2102) is transmitted to the observation area through the light-transmitting part 110, the light can be modulated as desired, such as homogenizing the light. It should be noted that the observation area is located on one side of the light-emitting surface 1102 of the light-transmitting part 110, which can be the area where other traffic participants are located. The light-transmitting part 110 includes an incident surface 1101 and an exit surface 1102 disposed opposite to each other. The second light ray 2102 enters from the incident surface 1101 of the light-transmitting part 110 and then exits from its opposite exit surface 1102. The inner side of the light-transmitting part 110 is the side where the incident surface 1101 is located, and the outer side of the light-transmitting part 110 is the side where the exit surface 1102 is located.

[0037] The dimming structure 120 can disperse the light gathered here and emit it at multiple different angles, thus propagating it to the observation area in the form of diffused light. The dimming structure 120 can improve the uniformity of light and avoid obvious differences in brightness caused by local overbrightness in the illuminated area. At the same time, it can also reduce the risk of the optical element 100 having a shortened lifespan due to excessively high temperature in local areas caused by local light gathering.

[0038] When the optical element 100 is applied to vehicle lights, such as in a signal light optical system, it can be placed in the optical path. When the vehicle lights are turned on, light enters the light-transmitting part 110 through the light-incident surface 1101. The second light ray 2102 is emitted from the light-exit surface 1102 of the light-transmitting part 110 to the outside and can eventually propagate to the observation area, so that other traffic participants can quickly and accurately perceive and identify the information displayed by the vehicle lights. Of course, as mentioned above, it is unavoidable that some of the light rays (i.e., the first light ray 2101) may converge on the side wall surface 1103 of the light-transmitting part 110, thus forming a noticeable bright spot when viewed in the observation area. To alleviate this problem, a dimming structure 120 can be provided at the location where the first light ray 2101 converges on the side wall surface 1103. In this way, the dimming structure 120 disperses the incident first light ray 2101 into the observation area at multiple different angles to alleviate the problem of light concentration at this location, thereby weakening the phenomenon of other traffic participants observing a noticeable bright spot, so that the optical element 100 presents a uniform lighting effect. It should be noted that, in this application, the first light ray 2101 refers to the light ray that is concentratedly incident on the side wall surface 1103 of the light-transmitting part 110, thus forming a noticeable bright spot.

[0039] In some embodiments, the dimming structure 120 can be a convex lens, a concave lens, an irregular lens, a microlens array, etc., and is not limited thereto. These structures control the path of light refraction or reflection to convert converged light into divergent light, thereby eliminating obvious bright spots.

[0040] Optionally, such as Figure 2 As shown, the dimming structure 120 has at least one optical surface 1201, which can be convex or concave. For example, when the optical surface 1201 is convex, the first light ray 2101 converges and then diverges through the convex surface to form diverging light in the observation area; when the optical surface 1201 is concave, the first light ray 2101 diverges through the concave surface to form diverging light in the observation area.

[0041] Specifically, the dimming structure 120 can diffuse the collected light by means of an optical surface 1201 disposed on the dimming structure 120. In this application, the dimming structure 120 has at least one optical surface 1201, meaning that the dimming structure 120 can be provided with one or more optical surfaces 1201. It should be understood that as the number of optical surfaces 1201 included in the dimming structure 120 increases, the area it can operate on will also increase accordingly. When there are multiple optical surfaces 1201, they can be distributed in multiple independent areas of the sidewall surface 1103, thus enabling the aforementioned improvements to be made separately for multiple areas where the first light 2101 converges.

[0042] The incident first ray 2101 can be adjusted through the optical surface 1201. Therefore, the optical surface 1201 can be concave or convex, which can be reasonably selected according to actual needs. For ease of understanding, the following is an example in a schematic manner:

[0043] For example, when the optical surface 1201 is a convex surface, the property that parallel light rays converge at the focal point of the convex surface and then diverge can be utilized to make the first light ray 2101 emitted from the optical surface 1201 propagate to the observation area in a divergent manner.

[0044] For example, when the optical surface 1201 is concave, the property that parallel light rays diverge after passing through the concave surface is utilized so that the first light ray 2101 that finally exits through the optical surface 1201 propagates to the observation area in a divergent manner.

[0045] like Figure 2 As shown, the optical surface 1201 is an arc surface or a near-arc surface. Specifically, an arc surface refers to an arc surface capable of diverging the first ray 2101, such as a cylindrical surface, a sphere, or an ellipsoid; a near-arc surface refers to a surface with a similar shape to an arc surface that can also diverge the first ray 2101, such as a near-cylindrical surface (similar to a cylindrical surface, and so on), a near-spherical surface, or a near-ellipsoidal surface. In other embodiments, the optical surface 1201 can also be a freeform surface.

[0046] Optionally, such as Figure 2 As shown, the dimming structure 120 includes a plurality of optical surfaces 1201, which are arranged sequentially along the optical axis direction perpendicular to the light-transmitting portion 110, and adjacent optical surfaces 1201 are sequentially adjacent to each other.

[0047] Specifically, the first light ray 2101 may be light rays from different directions, and its incident position on the side wall surface 1103 of the light-transmitting part 110 is a certain area. Therefore, the dimming structure 120 may include multiple optical surfaces 1201. The combination of multiple optical surfaces 1201 adjacent to each other can cover a larger area, so that the first light ray 2101 can be modulated more comprehensively.

[0048] for example Figure 2 As shown, multiple optical surfaces 1201 converge on the side wall surface 1103 of the light-transmitting portion 110 and are arranged sequentially along a direction perpendicular to the optical axis of the light-transmitting portion 110. That is, the multiple optical surfaces 1201 are arranged sequentially along the side wall surface 1103 of the light-transmitting portion 110. Furthermore, the multiple optical surfaces 1201 are arranged adjacent to each other, meaning there are no gaps between any two optical surfaces 1201, thus avoiding the problem of obvious bright spots caused by the convergence of the first light rays 2101 at intervals. This arrangement ensures that the light rays converged at the dimming structure 120 can be diffused through the adjustment of the optical surfaces 1201.

[0049] Optionally, such as Figure 1 and Figure 3 As shown, the light-transmitting part 110 has a thick wall, and a first light-uniforming structure 1104 is provided on the light-incident surface 1101. The second light ray 2102 incident on the light-incident surface 1101 is diffused by the first light-uniforming structure 1104 and then emitted from the light-exiting surface 1102 to the observation area.

[0050] Specifically, the light-transmitting part 110 has a thick wall. A thick wall refers to a light guide component with a certain thickness in the light-emitting direction. A first light-uniforming structure 1104 is provided on the light-incident surface 1101 of the light-transmitting part 110. The first light-uniforming structure 1104 allows the light incident on the light-incident surface 1101 to be diffused, improving the uniformity of the light. The uniformly diffused light then exits from the light-emitting surface 1102 to the observation area.

[0051] Based on the thick wall of the light-transmitting part 110, it can integrate the function of a light distribution lens. For example, a first light-uniforming structure 1104 is provided on its light-incident surface 1101. Compared with the existing form where the thick wall and the light distribution lens are set separately, this can save the number of parts, thereby reducing light loss and improving light utilization.

[0052] In some embodiments, the first uniform light structure 1104 can be a corn kernel pattern, an arc-shaped protrusion, or a structure with multiple concave surfaces.

[0053] Optionally, the light-transmitting part 110 is configured to be installed into the mounting hole of the body panel, and the light-emitting surface 1102 of the light-transmitting part 110 is exposed relative to the body panel.

[0054] Specifically, when the optical element 100 is applied to a vehicle lamp, the light-emitting surface 1102 of the light-transmitting part 110 is exposed relative to the body panel, allowing it to be directly observed from the observation area. In some embodiments, the remaining structure of the light-transmitting part 110, except for the light-emitting surface 1102, is covered within the mounting holes of the body panel, while the light-emitting surface 1102 is exposed. This arrangement integrates the original three components—the light-transmitting part 110, the lens, and the lamp cover—into a single component (optical element 100), reducing the number of parts in the lamp, lowering costs, and improving light utilization. It also avoids the problem of water vapor easily forming between the lamp cover and the light-transmitting part 110 (which has only one component), causing a decrease in light transmittance and resulting in uneven lighting effects. In other embodiments, both the light-emitting surface 1102 and the side wall surface 1103 of the light-transmitting part 110 are exposed relative to the body panel, resulting in a full and three-dimensional lighting effect of the light-transmitting part 110 as observed in the observation area.

[0055] Optionally, a mounting part is also provided on the side wall 1103 of the light-transmitting part 110, and the mounting part is engaged with the body panel.

[0056] Specifically, the light-transmitting part 110 is connected to the vehicle body panel via a mounting part. The fixed connection between the light-transmitting part 110 and the vehicle body panel ensures the stability of the light-transmitting part 110 and prevents the light-transmitting part 110 from shaking due to vehicle bumps, which would cause the emitted light to deviate and affect the lighting effect.

[0057] In some embodiments, the connection between the mounting portion of the light-transmitting part 110 and the vehicle body panel can be by snap-fit, screw connection, riveting, welding or adhesive bonding, etc., and is not limited here.

[0058] like Figures 4 to 6 As shown, in another aspect of this application embodiment, an optical system 200 is provided, including a light source 210, a reflector 230 and the aforementioned optical element 100 arranged sequentially along the optical path, the optical element 100 including a light-transmitting portion 110; the light emitted by the light source 210 includes a first light ray 2101 and a second light ray 2102; the first light ray 2101 is reflected by the reflector 230 and then enters the dimming structure 120 through the light-incident surface 1101 of the light-transmitting portion 110 and exits in the form of diverging light, and / or, the first light ray 2101 is reflected by the reflector 230 and then enters the dimming structure 120 through the light-incident surface 1101 of the light-transmitting portion 110, is reflected and diverged, and is transmitted to the light-exiting surface 1102 of the light-transmitting portion 110 and exits; the second light ray 2102 is reflected by the reflector 230 and then enters the light-incident surface 1101 of the light-transmitting portion 110, and exits the observation area through the light-exiting surface 1102 of the light-transmitting portion 110.

[0059] Specifically, one side of the light-incident surface 1101 of the optical element 100 is connected to the lamp housing 270. The light source 210 and the reflector 230 are disposed within the cavity formed by the optical element 100 and the lamp housing 270. The reflector 230 has a semi-enclosed structure, meaning it surrounds the light source 210 from one side to the top of the light source 210. The light emitted by the light source 210 is reflected by the reflector 230, allowing most of the light to be transmitted towards the light-transmitting part 110.

[0060] The reflector 230 reflects the light emitted from the light source 210, including a first ray 2101 and a second ray 2102. It should be noted that the first ray 2101 and the second ray 2102 do not refer to a specific beam of light, but rather to a portion of light rays with approximately the same incident direction. Specifically, the first ray 2101 refers to the light ray that, after being reflected by the reflector 230, enters the light-transmitting part 110 through the light-incident surface 1101 and then reaches the side wall surface 1103 of the light-transmitting part 110. Then, it passes through the dimming structure 120, which disperses the first ray 2101. A portion of the first ray 2101 is reflected and dispersed by the dimming structure 120 and then transmitted to the light-exiting surface 1102 before exiting; or the first ray 2101 is reflected and dispersed by the dimming structure 120 and transmitted to the light-exiting surface 1102 of the light-transmitting part 110 before exiting, preventing bright spots from forming on the side wall surface 1103 of the light-transmitting part 110 and improving the uniformity of light in the observation area. Furthermore, the second ray 2102 refers to the ray that illuminates the optical system 200. That is, after being reflected by the mirror 230, the second ray 2102 enters the light-transmitting part 110 through the light-incident surface 1101 and exits through the light-exit surface 1102 to the observation area. The second ray 2102 exits the observation area according to the ideal ray propagation path required to illuminate the optical system 200.

[0061] It should be understood that the optical system 200 can be a high beam module, a low beam module, or a signal light optical system, wherein the signal light optical system includes, but is not limited to, daytime running lights, position lights, turn signals, brake lights, reversing lights, and ADS lights (Autonomous Driving System Marker Lamp).

[0062] In some implementations, the light source 210 can be a laser light source or an LED, and no limitation is made here.

[0063] In some implementations, the light source 210 is blue-green. Specifically, the blue-green color of the light source 210 allows the optical system 200 to be used in ADS lamps, meeting regulatory requirements for the color of ADS lamp emission.

[0064] In some embodiments, the reflecting surface 2301 of the reflector 230 can be a parabola, a parabolic quasi-parabola, an ellipsoid, a quasi-ellipsoid, or a freeform surface, and is not limited thereto. Among them, a parabolic quasi-parabola is similar in shape to a parabola and has similar optical effects; a quasi-ellipsoid is similar in shape to an ellipsoid and has similar optical effects.

[0065] In some embodiments, the optical element 100 and the lamp housing 270 can be connected by screws, riveting, welding or gluing, etc., and no limitation is made here.

[0066] Optionally, such as Figure 6 and Figure 7 As shown, the light source 210 includes a plurality of light-emitting elements 220 arranged in sequence, and the reflector 230 includes a reflective surface 2301 corresponding to the light source 210; each reflective surface 2301 includes a plurality of sub-reflective surfaces 2302 arranged in sequence, and adjacent sub-reflective surfaces 2302 are connected by steps 2304 connected in sequence. The light-emitting elements 220 are arranged corresponding to the sub-reflective surfaces 2302. Further, the light-emitting elements 220 are arranged at or near the focal point of the sub-reflective surface 2302.

[0067] Specifically, the light source 210 includes multiple light-emitting elements 220. It should be noted that "multiple light-emitting elements 220" refers to two or more light-emitting elements 220 arranged sequentially. The reflector 230 surrounding the light source 210 is provided with a reflective surface 2301, which includes multiple sub-reflective surfaces 2302. Each light-emitting element 220 is correspondingly positioned to a sub-reflective surface 2302; for example, each light-emitting element 220 corresponds to one sub-reflective surface 2302, or multiple light-emitting elements 220 correspond to one sub-reflective surface 2302. Furthermore, adjacent sub-reflective surfaces 2302 are connected by sequentially linked minute steps 2304. Compared to the traditional method of connecting reflective surfaces with large sidewalls, which results in large dark areas due to the weak light diffusion ability of the sidewalls, the sub-reflective surfaces 2302 are connected by sequentially connected tiny steps 2304. This reduces the drop between adjacent sub-reflective surfaces 2302, thereby greatly mitigating the occurrence of large dark areas and improving the uniformity of light.

[0068] The optical center of the light-emitting element 220 is located at or near the focal point of the sub-reflecting surface 2302. For example, if the sub-reflecting surface 2302 is a parabola, the optical center of the light-emitting element 220 is located at or near the focal point of the parabola. When the light-emitting element 220 is located at the focal point of the sub-reflecting surface 2302, the light emitted from the light-emitting element 220 can be reflected by the sub-reflecting surface 2302 as much as possible, improving light utilization, increasing luminous efficiency, and improving the lighting effect of the optical element 100. "Near the focal point" refers to a range of 5mm from the focal point.

[0069] Optionally, such as Figure 7 and Figure 8 As shown, the sub-reflective surface 2302 has multiple grid surfaces 2303 arranged in a matrix.

[0070] Specifically, each sub-reflective surface 2302 has multiple grid surfaces 2303 arranged in a matrix. For example... Figure 6 As shown, the light reflected by the grid surface 2303 can have its reflection angle adjusted and its light diffused, resulting in higher light uniformity.

[0071] In some implementations, such as Figure 5 and Figure 6 As shown, a reflective sidewall 240 is provided on at least one side of the reflector 230, and the reflective sidewall 240 and the reflector 230 surround to form a reflective cavity 250, with the light source 210 located inside the reflective cavity 250; a second light-uniforming structure 2401 located inside the reflective cavity 250 is provided on the reflective sidewall 240.

[0072] Specifically, the light source 210 is placed within a reflecting cavity 250 formed by the reflecting sidewall 240 and the reflecting mirror 230. Light emitted from the light source 210 is reflected by the reflecting mirror 230 and the reflecting sidewall 240 and then propagates into the light-transmitting part 110. The light enters through the light-incident surface 1101 of the light-transmitting part 110 and exits through the light-exit surface 1102 to the observation area. The reflecting cavity 250 formed by the reflecting sidewall 240 and the reflecting mirror 230 prevents the light emitted from the light source 210 from directly exiting into the light-transmitting part 110 and forming stray light, thus improving the utilization rate of the light source 210 and providing a more uniform lighting effect. For example, such as... Figure 7 As shown, the reflective sidewalls 240 are disposed on three sides of the reflector 230.

[0073] A second light-uniforming structure 2401 is also provided on one side of the reflective sidewall 240 located in the reflective cavity 250. The second light-uniforming structure 2401 consists of multiple protrusions, which cause the light emitted from the light source 210 to be reflected when it reaches the reflective sidewall 240 and to be reflected uniformly at the same time.

[0074] In some embodiments, the second uniform light structure 2401 can be an arc-shaped protrusion, a cylindrical protrusion, or a structure with multiple concave surfaces.

[0075] In some implementations, such as Figure 4 As shown, the optical system 200 also includes a circuit board 260 for setting the light source 210. A light-blocking structure 2601 is provided on the circuit board 260. Along the light-emitting direction of the optical system 200, the light-blocking structure 2601 is located in front of the light source 210, so that the light-blocking structure 2601 is configured to block the third light rays that are directly emitted from the light source 210 and have not been reflected by the reflector 230.

[0076] Specifically, the optical system 200 also includes a circuit board 260, on which the light source 210 is mounted. A light-blocking structure 2601 for blocking a third ray is provided on the circuit board 260. This third ray refers to light that is emitted directly from the light source 210 and exits directly into the light-transmitting part 110 without being reflected by the reflective surface 2301 and the reflective sidewall 240. This light, if not controlled, can easily form stray light. Along the light-emitting direction of the optical system 200, the light-blocking structure 2601 is located in front of the light source 210. Simultaneously, multiple light-emitting elements 220 are correspondingly positioned with multiple light-blocking structures 2601. The light-blocking structure 2601 reduces the generation of stray light by blocking the direct light rays (i.e., the third ray) from the light-emitting elements 220.

[0077] In some implementations, the light-blocking structure 2601 can be a capacitor disposed on the circuit board 260. By optimizing the placement of the capacitor to make it the light-blocking structure 2601, the need to additionally set up the light-blocking structure 2601 is avoided.

[0078] This application embodiment also provides a vehicle, including a body panel and the aforementioned optical system 200, wherein the light-transmitting portion 110 of the optical system 200 is mounted in the mounting hole of the body panel.

[0079] Specifically, the light-transmitting part 110 in the optical system 200 is fixedly installed in the mounting hole of the vehicle body panel to ensure the stability of the light-transmitting part 110 during vehicle operation.

[0080] In some embodiments, the connection between the light-transmitting part 110 and the vehicle body panel can be by screw connection, riveting, welding or gluing, etc., and is not limited here.

[0081] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An optical element, characterized in that, include: The light-transmitting part includes an incident light surface and an exit light surface disposed opposite to each other, and a side wall surface adjacent to the exit light surface; A dimming structure is located on the side wall of the light-transmitting part; The first ray of light incident on the side wall after passing through the light-incident surface can form a divergent light that exits into the observation area after passing through the dimming structure.

2. The optical element as claimed in claim 1, characterized in that, The dimming structure has at least one optical surface, which is either convex or concave.

3. The optical element as described in claim 2, characterized in that, The dimming structure includes a plurality of optical surfaces, which are arranged sequentially along the optical axis perpendicular to the light-transmitting portion, and adjacent optical surfaces are sequentially adjacent to each other.

4. The optical element as claimed in claim 1, characterized in that, The light-transmitting part has a thick wall, and a first light-uniforming structure is provided on the light-incident surface. The second light rays incident on the light-incident surface are diffused by the first light-uniforming structure and then emitted from the light-out surface to the observation area.

5. The optical element according to any one of claims 1 to 4, characterized in that, The light-transmitting part is configured to be installed into the mounting hole of the vehicle body panel, and the light-emitting surface of the light-transmitting part is exposed relative to the vehicle body panel.

6. The optical element as claimed in claim 5, characterized in that, A mounting part is also provided on the side wall of the light-transmitting part, and the mounting part is engaged with the vehicle body cover.

7. An optical system, characterized in that, The system includes a light source, a reflector arranged sequentially along the optical path, and an optical element as described in any one of claims 1 to 6, wherein the optical element includes a light-transmitting portion; The light emitted by the light source includes a first light ray and a second light ray; After being reflected by the mirror, the first light ray enters the dimming structure through the light-incident surface of the light-transmitting part and exits in the form of diverging light; and / or, after being reflected by the mirror, the first light ray enters the dimming structure through the light-incident surface of the light-transmitting part, is reflected and diverged, and is transmitted to the light-exiting surface of the light-transmitting part before exiting. The second ray is reflected by the mirror and enters the light-incident surface of the light-transmitting part, and exits through the light-exiting surface of the light-transmitting part to the observation area.

8. The optical system as claimed in claim 7, characterized in that, The light source includes a plurality of light-emitting elements arranged in sequence, and the reflector includes a reflective surface disposed corresponding to the light source; The reflective surface includes a plurality of sub-reflective surfaces arranged in sequence, and adjacent sub-reflective surfaces are connected by steps that are connected in sequence. The light-emitting element is disposed corresponding to the sub-reflective surface and is disposed at or near the focal point of the sub-reflective surface.

9. The optical system as claimed in claim 8, characterized in that, The sub-reflective surface has multiple grid surfaces arranged in a matrix.

10. The optical system as claimed in claim 7, characterized in that, A reflective sidewall is provided on at least one side of the reflector, and the reflective sidewall and the reflector form a reflective cavity, with the light source located inside the reflective cavity; a second light-uniforming structure located inside the reflective cavity is provided on the reflective sidewall.

11. The optical system according to any one of claims 7 to 10, characterized in that, The optical system further includes a circuit board for mounting the light source, and a light-blocking structure is provided on the circuit board; along the light-emitting direction of the optical system, the light-blocking structure is located in front of the light source, and the light-blocking structure is configured to block a third ray of light that is directly emitted from the light source to the light-transmitting part.

12. A vehicle, characterized in that, The system includes a vehicle body panel and an optical system as described in any one of claims 7 to 11, wherein a light-transmitting portion of the optical system is mounted within a mounting hole in the vehicle body panel.

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