Vehicle lamp module, vehicle lamp and vehicle

Abstract

The invention provides a vehicle lamp module, a vehicle lamp and a vehicle, and relates to the technical field of vehicle lamps, the vehicle lamp module comprises a light-emitting element, a first thick-wall part and a second thick-wall part, and the light source module, the first thick-wall part and the second thick-wall part are arranged in the first direction parallel to a light beam of the vehicle lamp. The first thick-wall part comprises a first light inlet surface, a first light outlet surface, a first total reflection side surface and a third total reflection side surface, the second thick-wall part comprises a second light inlet surface, a second light outlet surface and a second total reflection side surface, the vehicle lamp beam transmitted to the second thick-wall part is transmitted to the second light outlet surface through the second total reflection side surface to be emitted, and the divergence angle of the emitted beam is larger. In the first direction, the projection of the first light incident surface covers a first area, including a light emitting center, of the light emitting element, the third total reflection side surface is located on a light beam transmission path of the first area and obliquely extends in the direction away from the central axis, and the included angle between the third total reflection side surface and the central axis is larger than that between the light beam of the first area and the central axis. And the lighting uniformity of the emergent light beam is better.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, and more particularly to an automotive lighting module, an automotive lighting, and a vehicle. Background Technology

[0002] As the automotive industry increasingly demands intelligence and personalization, the requirements for headlight design are also gradually increasing, along with the growing emphasis on uniform illumination. However, with the trend towards more personalized headlight designs, the challenge of achieving uniform illumination is becoming increasingly apparent.

[0003] For example, ring-shaped car lights, such as Figure 1 As shown, Figure 1 a and b are simulation diagrams of the effects of monochrome and color lighting when the observation position deviates from the frontal view direction by different angles. Figure 1 In the monochrome illumination simulation, different shades represent different brightness levels, while in the color illumination simulation, different colors represent different brightness levels. According to... Figure 1 It can be seen that when the observation position deviates from the direction of direct view, there will be obvious bright and dark areas, and the brightness distribution will be different with different deviation angles, resulting in poor uniformity of headlight illumination. Summary of the Invention

[0004] In view of this, this application provides a vehicle lighting module, a vehicle lighting module, and a vehicle, as follows:

[0005] A vehicle lighting module includes a light source module and a lens module. The lens module includes a first thick-walled component and a second thick-walled component. The light source module, the first thick-walled component, and the second thick-walled component are arranged sequentially along a first direction. The light source module includes a light-emitting element for emitting a vehicle lighting beam. The first direction is parallel to the transmission direction of the vehicle lighting beam.

[0006] The first thick-walled member includes a first light-incident surface and a first light-exiting surface arranged along the first direction, and a first total internal reflection side surface located between the first light-incident surface and the first light-exiting surface; the second thick-walled member includes a second light-incident surface and a second light-exiting surface arranged along the first direction, and a second total internal reflection side surface located between the second light-incident surface and the second light-exiting surface; at least a portion of the vehicle lamp beam is transmitted to the second thick-walled member through the first thick-walled member, the second light-exiting surface is the light-emitting surface of the vehicle lamp module, and the vehicle lamp beam transmitted to the second thick-walled member is transmitted to the second light-exiting surface via the second total internal reflection side surface and emitted;

[0007] Along the first direction, at least a portion of the projection of the first light-incident surface covers the first region of the light-emitting element; the first thick-walled member further includes a third total internal reflection side surface, the third total internal reflection side surface being located on the transmission path of the light beam emitted from the first region and extending obliquely along the transmission direction of the vehicle headlight beam, the third total internal reflection side surface being extended obliquely away from the central axis and having a preset angle with the central axis, the preset angle being greater than the angle between the transmission direction of the light beam emitted from the first region and the central axis; wherein, the central axis is parallel to the first direction, and the light-emitting center of the light-emitting element is located on the central axis, the first region including a portion of the region including the light-emitting center of the light-emitting element.

[0008] Optionally, the plane containing the first light-incident surface is perpendicular to the first direction, and along the first direction, the projection of the third total internal reflection side surface covers the first region of the light-emitting element.

[0009] Optionally, along the first direction, the first light-incident surface covers the second region of the light-emitting element, the first region being located within the second region, and along the first direction, the portion of the light-emitting element other than the second region is exposed by the first thick-walled member;

[0010] The portion of the headlight beam transmitted to the second light-incident surface includes a first beam, a second beam, and a third beam. The first beam is transmitted to the second light-incident surface sequentially through the first light-incident surface and the first light-out surface. The second beam is transmitted to the second light-incident surface sequentially through the first light-incident surface, the first total internal reflection side surface, and the first light-out surface. The third beam is directly transmitted to the second light-incident surface.

[0011] The light beam emitted by the second region includes the first light beam and the second light beam, and the angle between the transmission directions of the first light beam and the second light beam and the central axis is greater than a preset angle. The light beam emitted by the part of the light-emitting element other than the second region includes the third light beam.

[0012] Optionally, the first total internal reflection side and the third total internal reflection side are located on opposite sides of the first light-incident surface and the first light-exit surface along the second direction, the first total internal reflection side and the third total internal reflection side are located on one side of the central axis, and the third total internal reflection side is closer to the central axis than the first total internal reflection side; the second direction is perpendicular to the first direction;

[0013] The angle between the transmission direction of the second beam and the central axis is greater than the angle between the transmission direction of the first beam and the central axis.

[0014] Optionally, the second total internal reflection side includes a first sub-reflection side and a second sub-reflection side located on opposite sides of the second light-incident surface and the second light-exit surface along the second direction, wherein the first sub-reflection side and the second sub-reflection side are respectively located on both sides of the central axis;

[0015] The first sub-reflecting side, the first total reflection side, and the third total reflection side are located on one side of the central axis. The first light beam is transmitted to the first sub-reflecting side in sequence through the first light-incident surface, the first light-outcident surface, and the second light-incident surface. The second light beam is transmitted to the second sub-reflecting side in sequence through the first light-incident surface, the first total reflection side, and the second light-incident surface. The third light beam is transmitted to the second sub-reflecting side through the second light-incident surface.

[0016] Optionally, along the first direction, the center of the second light-emitting surface coincides with the light-emitting center of the light-emitting element;

[0017] Along the second direction, the center of the second light-emitting surface is equidistant from the first sub-reflective side surface and from the second sub-reflective side surface.

[0018] Optionally, the second light-emitting surface includes at least a portion extending along a third direction and a portion extending along a fourth direction, wherein the third direction and the fourth direction intersect, and both the third direction and the fourth direction are perpendicular to the first direction.

[0019] Optionally, both the first thick-walled member and the second thick-walled member are annular.

[0020] Optionally, the outer side of the second light-emitting surface is provided with a patterned structure; or,

[0021] The lens module further includes an inner lens, which is located between the first thick-walled member and the second thick-walled member, and the inner lens has a pattern on at least one side along the first direction.

[0022] A vehicle light, comprising any of the vehicle light modules described above.

[0023] A vehicle including the aforementioned headlights.

[0024] Compared with related technologies, the beneficial effects of the technical solution of this application are as follows:

[0025] The headlight module includes a light source module, a first thick-walled component, and a second thick-walled component. The light-emitting element of the light source module emits a headlight beam. The light source module, the first thick-walled component, and the second thick-walled component are arranged sequentially along a first direction, and the transmission direction of the headlight beam is parallel to the first direction. The first thick-walled component includes a first light-incident surface and a first light-exit surface arranged along the first direction, and a first total internal reflection side located between the first light-incident surface and the first light-exit surface. The second thick-walled component includes a second light-incident surface and a second light-exit surface arranged along the first direction, and a second total internal reflection side located between the second light-incident surface and the second light-exit surface. At least a portion of the headlight beam is transmitted through the first thick-walled component to the second thick-walled component. The second light-exit surface is the light-exit surface of the headlight module. The headlight beam transmitted to the second thick-walled component is transmitted through the second total internal reflection side to the second light-exit surface for emission, thereby increasing the divergence angle of the emitted beam from the headlight module.

[0026] Along the first direction, at least a portion of the projection of the first light-incident surface covers the first region of the light-emitting element. The first thick-walled member further includes a third total internal reflection side surface, which is located on the transmission path of the light beam emitted from the first region and extends obliquely away from the central axis along the transmission direction of the headlight beam. This third total internal reflection side surface has a preset angle with the central axis, which is greater than the angle between the transmission direction of the light beam emitted from the first region and the central axis. The central axis is parallel to the first direction, and the light-emitting center of the light-emitting element is located on the central axis. The first region includes a portion of the light-emitting element, including its light-emitting center. Therefore, the headlight beam emitted from the first region of the light-emitting element, including the central beam, is reflected by the third total internal reflection side surface when transmitted to it. This can suppress the transmission of the light beam emitted from the first region of the light-emitting element to the second thick-walled member, weakening or even eliminating the energy contribution of this portion of the beam to illuminating the light-emitting surface. This can reduce the brightness difference of the headlight beam entering the second thick-walled member and help improve the brightness uniformity of the headlight beam emitted from the second light-emitting surface. It is evident that the emitted beam of this headlight module has a larger divergence angle and better illumination uniformity, which can ensure brightness uniformity under more viewing angles, and thus effectively solve the problem of poor headlight illumination uniformity under multiple viewing angles. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0029] Figure 1 A simulation of the lighting effect of a vehicle headlight module based on a related technology;

[0030] Figure 2 This is a structural schematic diagram of a vehicle headlight module provided in this application;

[0031] Figure 3 This application provides a schematic diagram of the light transmission of a vehicle headlight module;

[0032] Figure 4 This is a structural schematic diagram of another vehicle lighting module provided in this application;

[0033] Figure 5 A structural schematic diagram of yet another vehicle lighting module provided in this application;

[0034] Figure 6 A simulation diagram of the lighting effect of a vehicle headlight module provided in this application;

[0035] Figure 7 A structural schematic diagram of yet another vehicle lighting module provided in this application;

[0036] Figure 8 This is a structural schematic diagram of another type of vehicle lighting module provided in this application. Detailed Implementation

[0037] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] As described in the background section, with the increasing personalization of vehicle headlight designs and the growing demand for uniform headlight illumination, vehicle headlights are required to achieve uniform illumination from more viewing angles.

[0040] For example, the demand for ring-shaped headlights is gradually increasing as headlight designs become more personalized. Specifically, current ring-shaped headlight designs typically employ two methods: 1. Using a collimation structure to efficiently transmit the LED beam along its emission direction to the light-emitting surface of a thick-walled component, illuminating the surface; 2. Placing the LED directly on the light-incident surface of the thick-walled component, i.e., using a direct-projection method to illuminate the light-emitting surface. Both methods achieve good illumination uniformity in the direct viewing direction, but both suffer from excessively high light emission efficiency in that direction compared to other directions. This results in noticeable bright and dark areas appearing even when the viewing position deviates slightly from the direct viewing direction. Furthermore, the brightness difference between the dark areas and the direct viewing direction widens as the viewing position deviates further, leading to poor illumination uniformity. Additionally, even if most of the LED beam is transmitted along the direct viewing direction, some beams are inevitably reflected by the thick-walled component and emitted at large angles, causing certain areas in the dark areas to be illuminated, further worsening the illumination uniformity.

[0041] Based on this, this application provides a vehicle lighting module, such as... Figure 2 As shown, Figure 2 This application provides a schematic diagram of the structure of a vehicle lighting module. The module includes a light source module 100 and a lens module 200. The lens module 200 includes a first thick-walled member 220 and a second thick-walled member 240. The light source module 100, the first thick-walled member 220, and the second thick-walled member 240 are arranged sequentially along a first direction. The light source module 100 includes a light-emitting element 102, which emits a vehicle lighting beam. The first direction is parallel to the transmission direction of the vehicle lighting beam. It should be noted that the light-emitting element 102 can be an LED, and the transmission direction of the vehicle lighting beam emitted by the light-emitting element 102 is the transmission direction of its central beam, that is, the transmission direction of the beam emitted by the light-emitting center of the LED.

[0042] The first thick-walled member 220 includes a first light-incident surface 222 and a first light-exiting surface 224 arranged along a first direction, and a first total internal reflection side surface 226 located between the first light-incident surface 222 and the first light-exiting surface 224. The second thick-walled member 240 includes a second light-incident surface 242 and a second light-exiting surface 244 arranged along the first direction, and a second total internal reflection side surface 246 located between the second light-incident surface 242 and the second light-exiting surface 244. At least a portion of the headlight beam is transmitted from the first thick-walled member 220 to the second thick-walled member 240, specifically entering the first thick-walled member 220 through the first light-incident surface 222, exiting from the first light-exiting surface 224, and entering the second thick-walled member 240 through the second light-incident surface 242. The second light-emitting surface 244 is the light-emitting surface of the headlight module, that is, the light-emitting surface of the second thick-walled member 240 is the light-emitting surface of the headlight module. The headlight beam transmitted to the second thick-walled member 240 is transmitted to the second light-emitting surface 244 via the second total internal reflection side 246 and is emitted from the second light-emitting surface 244. In other words, at least a portion of the headlight beam emitted by the light-emitting element 102 is transmitted to the second thick-walled member 240 via the first thick-walled member 220, and whether the headlight beam is transmitted to the second thick-walled member 240 via the first thick-walled member 220 or enters the second thick-walled member 240 via the second light-incident surface 242, it is reflected by the second total internal reflection side 246 and emitted from the second light-emitting surface 244.

[0043] It should be noted that the first light-incident surface 222 and the first light-exiting surface 224 are arranged sequentially along the first direction, meaning that the first light-incident surface 222 and the first light-exiting surface 224 are arranged sequentially along the beam transmission direction. This refers to the first light-exiting surface 224 being located further away from the light-emitting element 102 relative to the first light-incident surface 222 along the first direction, and does not imply that the first light-incident surface 222 and the first light-exiting surface 224 are completely corresponding along the first direction. For example, if the first direction is defined as the horizontal direction, it can be understood that the first light-exiting surface 224 is farther away from the light-emitting element 102 relative to the first light-incident surface 222 along the horizontal direction, while there can be a height difference between them along the vertical direction, or they can be at the same height. Similarly, the arrangement of the second light-exiting surface 244 along the first direction is also subject to the above explanation, and will not be elaborated further here.

[0044] Along the first direction, at least a portion of the projection of the first light-incident surface 222 covers the first region 001 of the light-emitting element 102. The first region 001 includes a portion of the area including the light-emitting center of the light-emitting element 102. Therefore, the beam of the headlight, including its central beam, will enter the first thick-walled member 220 along the first direction via the first light-incident surface 222. It should be noted that the aforementioned first region 001 may include the light-emitting center of the light-emitting element 102 and a portion of the area surrounding the light-emitting center. Specifically, it can be set according to the light emission brightness of the headlight module. If the light emission brightness requirement is high, the area of ​​the first region 001 is small; if the light emission brightness requirement is low, the area of ​​the first region 001 is large. It should be understood that the central beam of the headlight beam is the beam emitted by the light-emitting center of the light-emitting element 102.

[0045] The first total reflection side 226 includes a third total reflection side 228. The third total reflection side 228 is located on the transmission path of the light beam emitted by the first region 001. That is, after the part of the headlight beam, including its central beam, enters the first thick-walled member 220 through the first light-incident surface 222, it will be transmitted to the third total reflection side 228.

[0046] Furthermore, along the transmission direction of the headlight beam, the third total internal reflection side 228 extends obliquely away from the central axis 01, and there is a preset angle between the third total internal reflection side and the central axis 01. This preset angle is greater than the angle between the transmission direction of the beam emitted by the first region 001 and the central axis 01. The central axis 01 is parallel to the first direction, and the light-emitting center of the light-emitting element 102 is located on the central axis 01. That is, the third total internal reflection side 228 is an oblique side relative to the light-emitting center of the light-emitting element 102 along the central axis 01 in the first direction, and the distance between the third total internal reflection side 228 and the central axis 01 increases gradually along the direction away from the light-emitting element 102. Therefore, the aforementioned third total reflection side 228 is an inclined side with a preset angle relative to the central axis 01, and the preset angle is greater than the angle between the transmission direction of the light beam emitted by the first region 001 of the light-emitting element 102 and the central axis 01. At the same time, along the direction away from the light-emitting element 102, the distance between the third total reflection side 228 and the central axis 01 becomes larger and larger. Therefore, part of the headlight beam emitted by the first region 001 of the light-emitting element 102, including the central beam, is transmitted to the third total reflection side 228 and will be reflected by the third total reflection side 228. This can suppress the light beam emitted by the first region 001 of the light-emitting element 102 from being transmitted to the second thick-walled member 240, that is, suppress part of the headlight beam, including its central beam, from being transmitted to the second thick-walled member 240, or suppress part of the headlight beam, including its central beam, from being directly transmitted to the second thick-walled member 240, thereby weakening or even eliminating the energy contribution of this part of the beam to the illuminated surface.

[0047] As described above, the headlight module weakens or even eliminates the central beam of the headlight beam emitted by the light-emitting element 102 of the light source module 100 through the first thick-walled member 220, so that the headlight beam entering the second thick-walled member 240 is a headlight beam with weakened or eliminated central beam. It is known that the emitted beam of an LED has a Lambertian distribution, with the central beam having the highest intensity. Therefore, the headlight module can reduce the brightness difference of the headlight beam entering the second thick-walled member 240, which helps to improve the brightness uniformity of the headlight beam emitted from the second light-emitting surface 244. Furthermore, since the headlight beam entering the second thick-walled component 240 needs to be reflected by the second total internal reflection side 246 before exiting from the second light-emitting surface 244, that is, the headlight beam exiting from the second light-emitting surface 244 is first reflected and mixed by the second total internal reflection side 246 before exiting from the second light-emitting surface 244, the brightness uniformity of the headlight beam exiting from the second light-emitting surface 244 can be further improved, thereby improving the brightness uniformity of the emitted beam of the headlight module.

[0048] Furthermore, because the emitted beam from this headlight module undergoes total internal reflection via the second total internal reflection side and then exits from the second light-emitting surface 244, the divergence angle of the emitted beam from the second light-emitting surface 244 is larger. Figure 3 As shown, Figure 3 The center viewing direction is parallel to the first direction. Therefore, it can be seen that the emitted beam of this headlight module has a larger divergence angle and better brightness uniformity, ensuring brightness uniformity across more viewing angles, thus effectively solving the problem of poor headlight illumination uniformity under multiple viewing angles.

[0049] In one embodiment of this application, such as Figure 2 As shown, the plane containing the first light-incident surface 222 is perpendicular to the first direction, and along the first direction, the projection of the third total internal reflection side surface 228 covers the first region 001 of the light-emitting element 102. Specifically, since the first light-incident surface 222 is perpendicular to the first direction, that is, the first light-incident surface 222 is perpendicular to the transmission direction of the headlight beam emitted by the light-emitting element 102, the reflectivity of the headlight beam when it is transmitted to the first light-incident surface 222 is reduced as much as possible, which helps to ensure light utilization. In addition, since the first light-incident surface 222 is perpendicular to the transmission direction of the headlight beam emitted by the light-emitting element 102, the center beam of the headlight beam still transmits approximately in the first direction after passing through the first light-incident surface 222. Based on this, the projection of the third total internal reflection side surface 228 along the first direction covers the first region 001 of the light-emitting element 102, which can effectively ensure that the third total internal reflection side surface 228 can be located on the transmission path of the center beam of the headlight beam, and thus the center beam can be reflected by the third total internal reflection surface to weaken or even eliminate the center beam.

[0050] In one embodiment of this application, such as Figure 4As shown, along the first direction, the first light-incident surface 222 covers the second region 002 of the light-emitting element 102, and the first region 001 is located in the second region 002. Furthermore, along the first direction, the portion of the light-emitting element 102 other than the second region 002 is exposed by the first thick-walled member 220. That is, the light beam emitted by a portion of the light-emitting element 102, including its light-emitting center, is blocked by the third total internal reflection side surface 228, and the second region 002, where the first region 001 is located, is covered along the first direction by the projection of the first thick-walled member 220, while the remaining portion other than the second region 002 is exposed along the first direction by the first thick-walled member 220. Specifically, the projection of the first light-incident surface 222 along the first direction covers the first region 001 of the light-emitting element 102 and is larger than the first region 001. The light beam emitted by the first region 001 is blocked by the third total internal reflection side surface 228; for example, the first light-incident surface 222 is perpendicular to the first direction, and the projection of the third total internal reflection side surface 228 along the first direction covers the first region 001. The light-emitting element 102, except for the second region 002, is exposed by the first thick-walled member 220. Since the light-emitting element 102, the first thick-walled member 220 and the second thick-walled member 240 are arranged sequentially along the first direction, the exposed part of the light-emitting element 102 corresponds to a part of the second light-incident surface 242.

[0051] Based on the above, such as Figure 5 As shown, the portion of the headlight beam transmitted to the second light-incident surface 242 includes a first beam, a second beam, and a third beam. The first beam is transmitted sequentially to the second light-incident surface 242 via the first light-incident surface 222 and the first light-out surface 224. The second beam is transmitted sequentially to the second light-incident surface 242 via the first light-incident surface 222, the first total internal reflection side surface 226, and the first light-out surface 224. The third beam is directly transmitted to the second light-incident surface 242. The beam emitted by the second region 002 includes the first beam and the second beam, and the angle between the transmission directions of the first beam and the second beam and the central axis 01 is greater than a preset angle. The beam emitted by the portion of the light-emitting element 102 other than the second region 002 includes the third beam. It should be noted that the beam emitted by the second region 002, including the first beam and the second beam, can refer to the beam emitted by the region of the second region 002 other than the first region 001.

[0052] As described above, when the second region 002 of the light-emitting element 102, including the light-emitting center, is covered by the projection of the first light-incident surface 222 along the first direction, and this second region 002 is larger than the first region 001, the light beam transmitted from the first thick-walled member 220 to the second thick-walled member 240 includes a first light beam that is directly transmitted to the first light-emitting surface 224 and enters the second thick-walled member 240, and a second light beam that is reflected by the first total reflection surface and transmitted to the second thick-walled member 240 via the first light-emitting surface 224. Simultaneously, the light beam emitted by the portion of the light-emitting element 102 exposed by the first thick-walled member 220 along the first direction directly enters the thick-walled member via the second light-incident surface 242. Therefore, for this headlight module, the light beam entering the second thick-walled member 240 can be controlled by the relative size of the projection of the first light-incident surface 222 along the first direction and the light-emitting element 102, and the inclination degree of the third total reflection surface 228, i.e., the aforementioned preset angle. For example, if the projection of the first light-incident surface 222 along the first direction covers the entire area of ​​the light-emitting element 102, then the light beam entering the second thick-walled member 240 will all be transmitted to its second light-incident surface 242 via the first thick-walled member 220, thereby controlling the transmission direction of the emitted light beam. Furthermore, the angle between the first and second light beams and the first direction must be greater than a preset angle. Therefore, the tilt of the third total internal reflection side 228 can control the amount of light beam that can ultimately be transmitted to the second thick-walled member 240 via the first thick-walled member 220, thus controlling the brightness of the emitted light beam to a certain extent. Therefore, the relative size of the projection of the first light-incident surface 222 along the first direction and the light-emitting element 102, and the tilt of the third total internal reflection side 228 (i.e., the size of the preset angle), can control the transmission direction and brightness of the emitted light beam, achieving uniform illumination and brightness adjustment at a specific viewing angle, making it applicable to a wider range of applications.

[0053] In one embodiment of this application, such as Figure 4 As shown, the first total internal reflection side 226 and the third total internal reflection side 228 are located on opposite sides of the first light-incident surface 222 and the first light-exit surface 224 along the second direction. The first total internal reflection side 226 and the third total internal reflection side 228 are located on one side of the central axis O1, and the third total internal reflection side 228 is closer to the central axis O1 than the first total internal reflection side 226. The second direction is perpendicular to the first direction. Based on this, as... Figure 5As shown, the angle between the transmission direction of the second beam and the central axis O1 is greater than the angle between the transmission direction of the first beam and the central axis O1. Therefore, the second beam enters the beam of the first thick-walled member 220 via the first light-incident surface 222. The second beam, with its larger angle between its transmission direction and the central axis O1, can be reflected by the first total internal reflection side surface 226 and enters the second thick-walled member 240 via the first light-out surface 224 and the second light-incident surface 242. Thus, while weakening the central beam of the headlight beam, the first thick-walled member 220 can transmit more beam to the second thick-walled member 240, ensuring light utilization. It should be noted that, as... Figure 4 As shown, the first total reflection side 226 and the third total reflection side 228 can be parallel, but this application does not limit this and it depends on the specific circumstances.

[0054] In one embodiment of this application, such as Figure 5 As shown, the second total internal reflection side surface 246 includes a first sub-reflective side surface 248 and a second sub-reflective side surface 250 located on opposite sides of the second light-incident surface 242 and the second light-exit surface 244 along a second direction. The first sub-reflective side surface 248 and the second sub-reflective side surface 250 are respectively located on both sides of the central axis 01. Specifically, the first sub-reflective side surface 248 and the second sub-reflective side surface 250 can be arranged symmetrically with respect to the central axis 01, but this application does not limit this and it depends on the specific circumstances.

[0055] The first sub-reflective side 248, the first total reflection side 226, and the third total reflection side 228 are located on one side of the central axis O1. The first light beam is transmitted to the first sub-reflective side 248 in sequence through the first light-incident surface 222, the first light-outceasing surface 224, and the second light-incident surface 242. The second light beam is transmitted to the second sub-reflective side 250 in sequence through the first light-incident surface 222, the first total reflection side 226, and the second light-incident surface 242. The third light beam is transmitted to the second sub-reflective side 250 through the second light-incident surface 242.

[0056] As can be seen from the above, the first sub-reflective side 248 of the second thick-walled member 240 is located on the transmission path of the first beam, and the second sub-reflective side 250 is located on the transmission paths of the second and third beams. This ensures that the beams entering the second thick-walled member 240 through the second light-incident surface 242 are all reflected by the second total internal reflection side 246 and then emitted from the second light-out surface 244. As a result, the divergence angle of the emitted beam of the headlight module is larger, which helps to achieve brightness uniformity at more viewing angles.

[0057] It should be noted that the first total reflection side 226 and the third total reflection side 228 are located on the same side of the central axis 01. However, not all areas of the first total reflection side 226 and the third total reflection side 228 are limited to one side of the central axis 01 along the second direction. Rather, at least a portion of the first total reflection side 226 and the third total reflection side 228 are located on one side of the central axis 01 along the direction away from the light-emitting element 102.

[0058] In one embodiment of this application, such as Figure 2 As shown, along the first direction, the center of the second light-emitting surface 244 coincides with the light-emitting center of the light-emitting element 102. Along the second direction, the distance between the center of the second light-emitting surface 244 and the first sub-reflective side surface 248, and the distance between the center and the second sub-reflective side surface 250, are equal; that is, the center of the thickness of the second light-emitting surface 244 along the second direction corresponds to the light-emitting center of the light-emitting element 102. As previously known, the light beam emitted from the light-emitting center of the light-emitting element 102 is blocked by the third total internal reflection side surface 228. Therefore, the higher brightness at the center of the second light-emitting surface 244 due to the light beam emitted from the light-emitting center can be suppressed, thus contributing to uniform illumination.

[0059] In one embodiment of this application, the second light-emitting surface 244 includes at least a portion extending along a third direction and a portion extending along a fourth direction, the third and fourth directions intersecting, and both the third and fourth directions being perpendicular to the first direction. Therefore, the light-emitting surface of this automotive lamp module can be a light-emitting surface extending along multiple directions, for example... Figure 6 As shown, the second light-emitting surface 244 may include at least portions extending along a third and a fourth direction.

[0060] Specifically, Figure 6 Figures a and b show the simulated lighting effects of monochrome and color illumination when the viewing angle deviates by 20° from the normal viewing angle along a third direction, respectively. Figures c and d show the simulated lighting effects of monochrome and color illumination when the viewing angle deviates by 30° from the normal viewing angle along a third direction. Compared to the aforementioned... Figure 1 It can be seen that, Figure 1 Figures a and b show simulated lighting effects at angles 20° and 30° away from the normal viewing angle. The headlight module provided in this application improves the lighting uniformity at multiple viewing angles with small viewing angles, and can effectively improve the lighting uniformity at large viewing angles. Therefore, this headlight module can ensure lighting uniformity at multiple viewing angles while extending the light-emitting surface in multiple directions, making it suitable for personalized headlight designs such as ring-shaped headlights, where both the first thick-walled member 220 and the second thick-walled member 240 are ring-shaped.

[0061] It should be noted that when the second light-emitting surface 244 of the second thick-walled member 240 extends at least along the third and fourth directions, the second light-incident surface 242, the first light-emitting surface 224 and the first light-incident surface 222 can also extend at least along the third and fourth directions, and the multiple light-emitting elements 102 in the light source module 100 can also be arranged at least along the third and fourth directions.

[0062] In one embodiment of this application, the outer side of the second light-emitting surface 244 is provided with a patterned structure. Or as... Figure 7 As shown, the transparent module also includes an inner lens, which is located between the first thick-walled member 220 and the second thick-walled member 240, and the inner lens has a pattern on at least one side along the first direction. That is to say, the vehicle lamp module provided in this application, according to design requirements, can have the pattern structure set on the second light-emitting surface 244 of the second thick-walled member 240, that is, on the light-emitting surface of the vehicle lamp module, or it can be added on the inner lens between the first thick-walled member 220 and the second thick-walled member 240.

[0063] In one embodiment of this application, such as Figure 8 As shown, the lens module 200 also includes a third thick-walled member 260 located on the side of the third total internal reflection side 228 away from the first total internal reflection side 226. The third thick-walled member 260 includes a third light-incident surface 262 and a third light-exiting surface 264 along a first direction. The third light-incident surface 262 and the third light-exiting surface 264 are perpendicular to the first direction. The third light beam emitted by the portion of the light-emitting element 102 exposed by the first thick-walled member 220 is transmitted to the second thick-walled member 240 via the third light-incident surface 262 and the third light-exiting surface 264. The thickness of the third thick-walled member 260 along the first direction is d, such that the incident angle of the edge beam of the third light beam, away from the central beam, to the third light-exiting surface 264 is smaller than the total internal reflection angle of the third incident angle. This allows the third thick-walled member 260 to absorb a portion of the third light beam, reducing the brightness of the beam transmitted to the second thick-walled member 240, thereby controlling the brightness of the emitted beam of the headlight module.

[0064] This application also provides a vehicle light, which includes the vehicle light module described in any of the above embodiments.

[0065] This application also provides a vehicle that includes the headlights described in the above embodiments.

[0066] In summary, this application provides a vehicle lamp module, a vehicle lamp, and a vehicle. The vehicle lamp module includes a light source module, a first thick-walled member, and a second thick-walled member. The light-emitting element of the light source module emits a vehicle lamp beam. The light source module, the first thick-walled member, and the second thick-walled member are arranged sequentially along a first direction, and the transmission direction of the vehicle lamp beam is parallel to the first direction. The first thick-walled member includes a first light-incident surface and a first light-exit surface arranged along the first direction, and a first total internal reflection side located between the first light-incident surface and the first light-exit surface. The second thick-walled member includes a second light-incident surface and a second light-exit surface arranged along the first direction, and a second total internal reflection side located between the second light-incident surface and the second light-exit surface. At least a portion of the vehicle lamp beam is transmitted through the first thick-walled member to the second thick-walled member. The second light-exit surface is the light-exiting surface of the vehicle lamp module. The vehicle lamp beam transmitted to the second thick-walled member is transmitted through the second total internal reflection side to the second light-exit surface for emission, thereby increasing the divergence angle of the emitted beam from the vehicle lamp module.

[0067] Along the first direction, at least a portion of the projection of the first light-incident surface covers the first region of the light-emitting element. The first thick-walled member further includes a third total internal reflection side surface, which is located on the transmission path of the light beam emitted from the first region and extends obliquely away from the central axis along the transmission direction of the headlight beam. This third total internal reflection side surface has a preset angle with the central axis, which is greater than the angle between the transmission direction of the light beam emitted from the first region and the central axis. The central axis is parallel to the first direction, and the light-emitting center of the light-emitting element is located on the central axis. The first region includes a portion of the headlight beam, including the central beam, emitted from the first region of the light-emitting element. Therefore, a portion of the headlight beam, including the central beam, emitted from the first region of the light-emitting element is transmitted to the third total internal reflection side surface and reflected by it. This can suppress the transmission of the light beam emitted from the first region of the light-emitting element to the second thick-walled member, weakening or even eliminating the energy contribution of this portion of the beam to illuminating the light-emitting surface. This can reduce the brightness difference of the headlight beam entering the second thick-walled member and help improve the brightness uniformity of the headlight beam emitted from the second light-emitting surface. It is evident that the emitted beam of this headlight module has a larger divergence angle and better brightness uniformity, which can ensure brightness uniformity under more viewing angles, and thus effectively solve the problem of poor headlight illumination uniformity under multiple viewing angles.

[0068] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0069] It should be noted that, in the description of this application, the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0070] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0071] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle lamp module, characterized in that, The application relates to a vehicle lamp module, comprising: a light source module and a lens module, the lens module comprising a first thick-walled piece and a second thick-walled piece, the light source module, the first thick-walled piece and the second thick-walled piece being arranged in sequence along a first direction; the light source module comprising a light emitting element for emitting a vehicle lamp beam, the first direction being parallel to a transmission direction of the vehicle lamp beam; the first thick-walled piece comprising a first light inlet surface and a first light outlet surface arranged along the first direction, and a first total reflection side surface located between the first light inlet surface and the first light outlet surface; the second thick-walled piece comprising a second light inlet surface and a second light outlet surface arranged along the first direction, and a second total reflection side surface located between the second light inlet surface and the second light outlet surface; at least part of the vehicle lamp beam is transmitted to the second thick-walled piece through the first thick-walled piece, the second light outlet surface being a light emitting surface of the vehicle lamp module, and the vehicle lamp beam transmitted to the second thick-walled piece is transmitted to the second light outlet surface through the second total reflection side surface and then emitted; along the first direction, at least part of a projection of the first light inlet surface covers a first area of the light emitting element; the first thick-walled piece further comprises a third total reflection side surface, the third total reflection side surface being located on a transmission path of a light beam emitted by the first area, and along the transmission direction of the vehicle lamp beam, the third total reflection side surface extends in a direction away from a central axis, and has a preset included angle with the central axis, the preset included angle being greater than an included angle between a transmission direction of the light beam emitted by the first area and the central axis; wherein the central axis is parallel to the first direction, and a light emitting center of the light emitting element is located on the central axis, and the first area comprises a partial area of the light emitting element including the light emitting center.

2. The vehicle lamp module of claim 1, wherein, a plane where the first light inlet surface is located is perpendicular to the first direction, and along the first direction, a projection of the third total reflection side surface covers the first area of the light emitting element.

3. The vehicle lamp module of claim 1, wherein, along the first direction, the first light inlet surface covers a second area of the light emitting element, the first area being located in the second area, and along the first direction, a part of the light emitting element other than the second area is exposed by the first thick-walled piece; the part of the vehicle lamp beam transmitted to the second light inlet surface comprises a first light beam, a second light beam and a third light beam, the first light beam is transmitted to the second light inlet surface in sequence through the first light inlet surface and the first light outlet surface, the second light beam is transmitted to the second light inlet surface in sequence through the first light inlet surface, the first total reflection side surface and the first light outlet surface, and the third light beam is directly transmitted to the second light inlet surface; wherein the light beam emitted by the second area comprises the first light beam and the second light beam, and an included angle between a transmission direction of the first light beam and the second light beam and the central axis is greater than the preset included angle, and the light beam emitted by the part of the light emitting element other than the second area comprises the third light beam.

4. The vehicle lamp module of claim 3, wherein, The first total reflection side and the third total reflection side are located on opposite sides of the first light entrance surface and the first light exit surface along a second direction, the first total reflection side and the third total reflection side are located on one side of the central axis, and the third total reflection side is closer to the central axis than the first total reflection side; the second direction is perpendicular to the first direction; An angle between a transmission direction of the second light beam and the central axis is greater than an angle between a transmission direction of the first light beam and the central axis.

5. The vehicle lamp module of claim 4, wherein, The second total reflection side includes a first sub-reflection side and a second sub-reflection side located on opposite sides of the second light entrance surface and the second light exit surface along the second direction, and the first sub-reflection side and the second sub-reflection side are respectively located on two sides of the central axis. The first sub-reflection side and the third total reflection side are located on one side of the central axis, the first light beam is transmitted to the first sub-reflection side in sequence through the first light entrance surface, the first light exit surface, and the second light entrance surface, the second light beam is transmitted to the second sub-reflection side in sequence through the first light entrance surface, the first total reflection side, and the second light entrance surface, and the third light beam is transmitted to the second sub-reflection side through the second light entrance surface.

6. The vehicle lamp module of claim 5, wherein, Along the first direction, a center of the second light exit surface coincides with a light-emitting center of the light-emitting element. Along the second direction, a distance between the center of the second light exit surface and the first sub-reflection side is equal to a distance between the center of the second light exit surface and the second sub-reflection side.

7. The vehicle lamp module of claim 1, wherein, The second light exit surface includes at least a portion extending along a third direction and a portion extending along a fourth direction, the third direction and the fourth direction intersect, and the third direction and the fourth direction are both perpendicular to the first direction.

8. The vehicle lamp module of claim 7, wherein, The first thick-walled member and the second thick-walled member are both annular.

9. The vehicle lamp module of claim 1, wherein, An outer side of the second light exit surface is provided with a pattern structure; or The lens module further includes an inner lens, the inner lens is located between the first thick-walled member and the second thick-walled member, and the inner lens is provided with a pattern on at least one side along the first direction.

10. A vehicle lamp characterized by The vehicle lamp module includes the vehicle lamp module of any one of claims 1-9.

11. A vehicle characterized by comprising: The vehicle lamp includes the vehicle lamp of claim 10.

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