Light guide element, vehicle lamp module and vehicle lamp
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-08-13
Smart Images
Figure CN2025076452_13082026_PF_FP_ABST
Abstract
Description
Light guide elements, automotive lighting modules and automotive lights Technical Field
[0001] This application belongs to the field of automotive lighting, specifically relating to a light guide element, an automotive lighting module, and an automotive lighting. Background Technology
[0002] In vehicle headlights, both low beam and high beam functions are mandatory. When the vehicle's headlights are in low beam mode, the high beam is off, meaning the low beam unit is lit while the high beam unit is off. Visually, this creates an uneven illumination, which is not aesthetically pleasing. For a better visual effect, not only should the low beam be on when the low beam is engaged, but we also hope that, while meeting relevant low beam regulations, the high beam should also be on, so that the high beam unit appears to be lit as well.
[0003] Existing technologies for achieving the accompanying illumination function simply involve adding an additional accompanying light source to illuminate the high beam unit in low beam mode. The accompanying illumination pattern achieved by a single accompanying light source is not uniform enough and has a small beam spread. To improve the illumination effect of the accompanying illumination pattern, multiple accompanying light sources and multiple light guides corresponding to the accompanying light sources are required, which will undoubtedly greatly increase the manufacturing cost of the vehicle lights.
[0004] Chinese patent application CN219389472U discloses a low-beam illumination component, which includes an accompanying light source and a light guide sheet. In low-beam conditions, by illuminating the accompanying light source, the light emitted by the accompanying light source enters the light guide sheet through the light-incident surface of the light guide sheet, and is reflected by the side wall of the light guide sheet before exiting to the high-beam lens, thereby realizing the accompanying illumination function. However, the resulting accompanying illumination light pattern has a small broadening and the illumination effect is not uniform enough. Summary of the Invention
[0005] The technical problem to be solved by this application is to provide a light guide element, a vehicle lamp module and a vehicle lamp, so as to achieve a uniform light output and a large light output angle when using a single light source.
[0006] To address the aforementioned technical problems, a first aspect of this application provides a light guide element, comprising a focusing portion, a first light emitting portion, a first light transmitting portion, and a second light emitting portion. The focusing portion is configured to converge light received by the focusing portion to form a collimated beam that propagates forward. The first light emitting portion is disposed in front of the focusing portion. The first light emitting portion is sequentially connected to the first light transmitting portion and the second light emitting portion along a first lateral side. The first light emitting portion includes a first light emitting surface and a first reflective surface. The first light emitting surface is configured to emit a portion of the collimated beam forward, and the first reflective surface is configured to reflect a portion of the collimated beam back to the first light transmitting portion, so that the first light transmitting portion guides the reflected light to the second light emitting portion for forward emission.
[0007] In some specific embodiments, the light guide element further includes a second light-transmitting part and a third light-emitting part. The first light-emitting part is sequentially connected to the second light-transmitting part and the third light-emitting part along a second side in the lateral direction. The first light-emitting part further includes a second reflective surface, which is configured to reflect a portion of the collimated beam toward the second light-transmitting part, so that the second light-transmitting part guides the reflected light to the third light-emitting part for forward emission.
[0008] In some specific embodiments, the first reflective surface, the first light-emitting surface, and the second reflective surface are arranged sequentially in the transverse direction, wherein the first reflective surface is close to the first side of the first light-emitting part in the transverse direction, and the second reflective surface is close to the second side of the first light-emitting part in the transverse direction; or, the first reflective surface is close to the second side of the first light-emitting part in the transverse direction, and the second reflective surface is close to the first side of the first light-emitting part in the transverse direction.
[0009] In some specific embodiments, the second light-emitting portion includes a second light-emitting surface and a second light-emitting reflective surface disposed opposite to each other. The second light-emitting reflective surface is configured to reflect the reflected light guided by the first light-transmitting portion to the second light-emitting surface, so that the reflected light from the second light-emitting reflective surface is emitted forward through the second light-emitting surface; and / or, the third light-emitting portion includes a third light-emitting surface and a third light-emitting reflective surface disposed opposite to each other. The third light-emitting reflective surface is configured to reflect the reflected light guided by the second light-transmitting portion to the third light-emitting surface, so that the reflected light from the third light-emitting reflective surface is emitted forward through the third light-emitting surface.
[0010] In some specific embodiments, the first light-transmitting portion includes a first front sidewall and a first rear sidewall, both of which are total reflective surfaces; and / or, the second light-transmitting portion includes a second front sidewall and a second rear sidewall, both of which are total reflective surfaces.
[0011] In some specific embodiments, the light guide element further includes a fourth light emitting section, which is disposed on one side of the first light emitting section along the vertical direction. The first light emitting section further includes a third reflective surface, which is configured to reflect a portion of the collimated beam vertically to the fourth light emitting section, so that the reflected light is emitted forward through the fourth light emitting section.
[0012] In some specific embodiments, the fourth light-emitting part includes a fourth light-emitting surface and a fourth light-emitting reflective surface disposed opposite to each other. The fourth light-emitting reflective surface is configured to reflect the light reflected by the third reflective surface to the fourth light-emitting surface, so that the reflected light from the fourth light-emitting reflective surface is emitted forward through the fourth light-emitting surface.
[0013] In some specific embodiments, the first light-emitting surface is a plane; or, the first light-emitting surface is a concave curved surface formed by sweeping the contour line of a concave curve along a sweeping line, which is a straight line or arc extending vertically.
[0014] A second aspect of this application provides a vehicle lighting module, including an illumination concentrator, a companion concentrator, a lens, an illumination source, and a companion light source. The companion concentrator is disposed below the illumination concentrator. The light emitted from the illumination source is adapted to be focused by the illumination concentrator and then projected by the lens to form an illumination pattern. The companion concentrator is the aforementioned light guide element. The companion light source is disposed corresponding to the concentrator, so that the light emitted from the companion light source is adapted to be focused by the companion concentrator and then projected by the lens to form a companion illumination pattern.
[0015] In some specific embodiments, the light guide element further includes a second light-transmitting part and a third light-emitting part. The first light-emitting part is sequentially connected to the second light-transmitting part and the third light-emitting part along a second side of the transverse direction. The first light-emitting part further includes a second reflective surface, which is configured to reflect a portion of the collimated beam toward the second light-transmitting part, so that the second light-transmitting part guides the reflected light to the third light-emitting part for forward emission. The second light-emitting part and the third light-emitting part are respectively arranged on both sides of the optical axis of the lens. The second light-emitting part is configured such that the light emitted through the second light-emitting part is directed toward the light-incident surface of the lens located on the second side of the transverse direction of the optical axis. The third light-emitting part is configured such that the light emitted through the third light-emitting part is directed toward the light-incident surface of the lens located on the first side of the transverse direction of the optical axis.
[0016] In some specific embodiments, the second light-emitting portion includes a second light-emitting surface, which is configured such that light rays emitted from the second light-emitting portion are directed toward the light-incident surface of the lens; the third light-emitting portion includes a third light-emitting surface, which is configured such that light rays emitted from the third light-emitting portion are directed toward the light-incident surface of the lens; wherein the angle between the second light-emitting surface and the optical axis of the lens is greater than or equal to 61° and less than or equal to 81°, and the angle between the third light-emitting surface and the optical axis of the lens is greater than or equal to 61° and less than or equal to 81°.
[0017] In some specific embodiments, the headlight module further includes a baffle disposed between the accompanying condenser and the lens. The baffle includes a first baffle reflective surface and a second baffle reflective surface. The first baffle reflective surface is located on a first side of the optical axis of the lens along the transverse direction. The first baffle reflective surface is configured to reflect the light emitted from the third light-emitting part to the light-incident surface of the lens, and then project it onto the first side of the optical axis through the lens. The second baffle reflective surface is located on a second side of the optical axis of the lens along the transverse direction. The second baffle reflective surface is configured to reflect the light emitted from the second light-emitting part to the light-incident surface of the lens, and then project it onto the second side of the optical axis through the lens.
[0018] In some specific embodiments, the light guide element further includes a fourth light emitting section disposed below the first light emitting section. The first light emitting section further includes a third reflective surface configured to reflect a portion of the collimated beam downwards to the fourth light emitting section, so that the reflected light is emitted forward through the fourth light emitting section. The baffle further includes a third baffle reflective surface located below the optical axis of the lens, and the third baffle reflective surface configured to reflect both the light emitted from the fourth light emitting section and the light emitted from the first light emitting section upwards and forwards to the light incident surface of the lens.
[0019] In some specific embodiments, the lighting concentrator and the accompanying concentrator are integrally molded parts.
[0020] In some specific embodiments, the illumination concentrator is a needle-shaped concentrator, which includes a plurality of needle-shaped sub-concentrators, and the illumination source includes a plurality of illumination sub-sources, which are arranged in a one-to-one correspondence with the needle-shaped sub-concentrators.
[0021] In some specific embodiments, the vehicle light module further includes a circuit board, on which the lighting source and the accompanying light source are jointly disposed.
[0022] In some specific embodiments, the headlight module is a high beam module, and the light emitted from the lighting source is adapted to be focused by the lighting concentrator and then projected by the lens to form a high beam pattern.
[0023] A third aspect of this application provides a vehicle lamp, including the aforementioned vehicle lamp module, wherein the accompanying light source is configured to illuminate under low beam conditions.
[0024] The light guide element of this application is provided with a focusing part, a first light emitting part, a first light-passing part, and a second light emitting part. Part of the collimated beam focused by the focusing part can pass straight through the first light emitting part and be emitted forward. Part of the collimated beam can also enter the first light-passing part through the first reflective surface. The first light-passing part can guide the reflected light to the second light emitting part and emit it forward. Therefore, when it is necessary to realize the accompanying lighting function of the vehicle lights, only one light source needs to be set up so that the light emitted by the light source enters the focusing part, which can realize the light emission of the dual light emitting parts, making the light emission angle larger, effectively expanding the lateral width of the accompanying lighting light pattern, and having a uniform lighting effect.
[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description
[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:
[0027] Figure 1 is a schematic diagram of a specific embodiment of the light guide element of this application;
[0028] Figure 2 is a front view of the integrated lighting condenser and accompanying condenser.
[0029] Figure 3 is a rear view of the integrated lighting condenser and accompanying condenser.
[0030] Figure 4 is a front view of the integrated lighting condenser and accompanying condenser.
[0031] Figure 5 is a cross-sectional view at point AA in Figure 4;
[0032] Figure 6 is a schematic diagram of the optical path at point AA in Figure 4;
[0033] Figure 7 is a cross-sectional view at point BB in Figure 4;
[0034] Figure 8 is a schematic diagram of the optical path at point BB in Figure 4;
[0035] Figure 9 is a structural schematic diagram of the first specific embodiment of the vehicle lighting module of this application;
[0036] Figure 10 is a schematic diagram of the optical path of the first specific embodiment of the vehicle lighting module of this application;
[0037] Figure 11 is a schematic diagram of the light pattern of the accompanying illumination light pattern formed by the first specific embodiment of the vehicle light module of this application;
[0038] Figure 12 is a structural schematic diagram of a second specific embodiment of the vehicle lighting module of this application;
[0039] Figure 13 is a schematic diagram of the baffle structure;
[0040] Figure 14 is a schematic diagram of the light pattern of the accompanying illumination light pattern formed by the second specific embodiment of the vehicle light module of this application;
[0041] Figure 15 is an exploded view of the components of the second specific embodiment of the vehicle lighting module of this application;
[0042] Figure 16 is an exploded view of the components of the third specific embodiment of the vehicle lighting module of this application;
[0043] Figure 17 is a schematic diagram of another specific embodiment of the light guide element of this application;
[0044] Figure 18 is a front view of another specific embodiment of the light guide element of this application;
[0045] Figure 19 is a left view of another specific embodiment of the light guide element of this application;
[0046] Figure 20 is a top view of another specific embodiment of the light guide element of this application;
[0047] Figure 21 is a schematic diagram of the optical path at point CC in Figure 18.
[0048] Explanation of reference numerals in the attached drawings: 1. Illumination concentrator; 2. Accompanying concentrator; 201. Concentrating part; 202. First light-emitting part; 202-1. First light-emitting surface; 202-2. First reflecting surface; 202-3. Second reflecting surface; 202-4. Third reflecting surface; 203. First light-transmitting part; 203-1. First front sidewall; 203-2. First rear sidewall; 204. Second light-emitting part; 204-1. Second light-emitting surface; 204-2. Second light-emitting reflecting surface; 205. Second light-transmitting part; 205-1. Second front sidewall; 205-2. Second rear sidewall; 206. Third light-emitting part; 206-1. Third light-emitting surface; 206-2. Third light-emitting reflecting surface; 207. Fourth light-emitting part; 208. First light-emitting part; 209. Second light-emitting part; 2000. Third ... Light section; 207-1, fourth light-emitting surface; 207-2, fourth light-emitting reflective surface; 3, lens; 4, illumination source; 5, accompanying light source; 6, baffle; 601, first baffle reflective surface; 602, second baffle reflective surface; 603, third baffle reflective surface; 7, circuit board; 8, lens bracket; 9, heat sink; 10, mounting screw; 11, condenser bracket; 100, first accompanying light-emitting beam; 200, second accompanying light-emitting beam; 300, third accompanying light-emitting beam; 400, fourth accompanying light-emitting beam. Detailed Implementation
[0049] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0050] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.
[0051] It should be noted that, for ease of description and simplification, the orientation of the headlight module is generally the same as that of the headlight in actual use on a vehicle. For example, the lens is in front, and correspondingly, the primary optical element (e.g., the condenser) is behind. The horizontal arrangement of the individual optical systems means that the individual optical systems are arranged roughly along the left-right direction, and the vertical arrangement means roughly along the up-down direction. In the description of this application, the indicated orientations or positional relationships are only for ease of description and simplification, 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. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0052] Furthermore, the use of terms such as "including" or "comprising" in this application means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that it may also cover other elements.
[0053] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.
[0054] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.
[0055] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.
[0056] This application provides a light guide element as a basic embodiment of the light guide element. Referring to Figures 1-8 and 17-21, the light guide element can be a solid, integrally formed light conductor. The light guide element includes a focusing portion 201, a first light-emitting portion 202, a first light-transmitting portion 203, and a second light-emitting portion 204. The focusing portion 201 is configured to converge the light received by the focusing portion 201 to form a collimated beam that propagates forward. The first light-emitting portion 202 is disposed within the focusing portion 201. At the front, the first light-emitting part 202 is sequentially connected to the first light-transmitting part 203 and the second light-emitting part 204 along the first side of the transverse direction. The first light-emitting part 202 includes a first light-emitting surface 202-1 and a first reflective surface 202-2. The first light-emitting surface 202-1 is configured to emit part of the collimated beam forward, and the first reflective surface 202-2 is configured to reflect part of the collimated beam toward the first light-transmitting part 203, so that the first light-transmitting part 203 guides the reflected light to the second light-emitting part 204 for forward emission.
[0057] Based on the above-described basic embodiment of the light guide element, when it is necessary to realize the accompanying lighting function of the vehicle headlight, it is only necessary to set a light source corresponding to the focusing part 201. For example, referring to Figure 6, an accompanying light source 5 is set behind the focusing part 201, so that the light emitted from the accompanying light source 5 enters the focusing part 201. The focusing part 201 focuses the light emitted from the accompanying light source 5 into a collimated beam. Part of the collimated beam is directly emitted forward through the first light-emitting surface 202-1 of the first light-emitting part 202 to form the first accompanying light-emitting beam 100. Part of the collimated beam can be reflected by the first reflective surface 202-2 and change its transmission direction. It is guided laterally through the first light-transmitting part 203 to the second light-emitting part 204 and emitted forward to form the second accompanying light-emitting beam 200. The first accompanying light-emitting beam 100 and the second accompanying light-emitting beam 200 are arranged laterally, thereby forming two light-emitting areas in the lateral light path of the light guide element, making the light emission angle larger, effectively expanding the lateral width of the accompanying lighting pattern, and having a uniform lighting effect.
[0058] Referring to Figures 2-6 and 17-21, the light guide element of this application further includes a second light-transmitting part 205 and a third light-emitting part 206. The first light-emitting part 202 is sequentially connected to the second light-transmitting part 205 and the third light-emitting part 206 along the second side of the transverse direction. The first light-emitting part 202 also includes a second reflective surface 202-3. The second reflective surface 202-3 is configured to reflect part of the collimated beam toward the second light-transmitting part 205, so that the second light-transmitting part 205 guides the reflected light to the third light-emitting part 206 for forward emission. In this context, the first and second sides of the lateral direction are opposite directions. Specifically, referring to Figures 2-6 and 10, the first light-transmitting part 203 and the second light-emitting part 204 are located to the right of the first light-emitting part 202, and the second light-transmitting part 205 and the third light-emitting part 206 are located to the left of the first light-emitting part 202. Part of the collimated beam can be reflected by the second reflecting surface 202-3 and its transmission direction can be changed. It is then guided laterally through the second light-transmitting part 205 to the third light-emitting part 204 and emitted forward to form the third accompanying light-emitting beam 300. The second accompanying light-emitting beam 200 and the third accompanying light-emitting beam 300 are located on the left and right sides of the first accompanying light-emitting beam 100, respectively. This forms three light-emitting areas in the lateral optical path of the light guide element that forms the accompanying illuminated light pattern, further expanding the lateral width of the accompanying illuminated light pattern and making the accompanying illuminated light pattern uniform.
[0059] It should be noted that the first reflective surface 202-2, the first light-emitting surface 202-1, and the second reflective surface 202-3 are arranged sequentially in the transverse direction. In one specific embodiment, the first reflective surface 202-2 is located near the first side of the first light-emitting part 202 in the transverse direction, and the second reflective surface 202-3 is located near the second side of the first light-emitting part 202 in the transverse direction. Specifically, referring to Figures 5, 6, and 10, the first reflective surface 202-2 and the second light-emitting part 204 are both located to the right of the first light-emitting surface 202-1, and the second reflective surface 202-3 and the third light-emitting part 206 are both located to the right of the first light-emitting surface 202-1. On the left side of the light surface 202-1, the collimated beam formed by the focusing part 201, located in the middle region, is emitted forward through the first light-emitting surface 202-1 to form a first accompanying light-emitting beam 100. The light in the right region of the collimated beam is reflected to the right by the first reflecting surface 202-2, and then guided by the first light-transmitting part 203 to the second light-emitting part 204 to be emitted forward to form a second accompanying light-emitting beam 200. The light in the left region of the collimated beam is reflected to the left by the second reflecting surface 202-3, and then guided by the second light-transmitting part 205 to the third light-emitting part 206 to be emitted forward to form a third accompanying light-emitting beam 300; or, as the first reflection... In another specific embodiment of surface 202-2 and second reflective surface 202-3, the first reflective surface 202-2 is located near the second side of the first light-emitting part 202 along the transverse direction, and the second reflective surface 202-3 is located near the first side of the first light-emitting part 202 along the transverse direction. Specifically, referring to Figures 17-21, the first reflective surface 202-2 is located to the left of the first light-emitting surface 202-1, the second light-emitting part 204 is located to the right of the first light-emitting surface 202-1, the second reflective surface 202-3 is located to the right of the first light-emitting surface 202-1, and the third light-emitting part 206 is located to the left of the first light-emitting surface 202-1. Furthermore, the first reflective surface 202-2 and the second reflective surface 202-3 are located on opposite sides of the first light-emitting part 202-1. The light-emitting surfaces 202-3 are staggered in the front-to-back direction. Thus, the light rays in the middle region of the collimated beam formed by the focusing part 201 are emitted forward through the first light-emitting surface 202-1 to form the first accompanying light-emitting beam 100. The light rays in the left region of the collimated beam are reflected to the right by the first reflecting surface 202-2 and then guided by the first light-transmitting part 203 to the second light-emitting part 204 to be emitted forward to form the second accompanying light-emitting beam 200. The light rays in the right region of the collimated beam are reflected to the left by the second reflecting surface 202-3 and then guided by the second light-transmitting part 205 to the third light-emitting part 206 to be emitted forward to form the third accompanying light-emitting beam 300.
[0060] As a specific embodiment of the second light-emitting section 204, referring to Figures 2-6 and 17-21, the second light-emitting section 204 includes a second light-emitting surface 204-1 and a second light-emitting reflective surface 204-2 disposed opposite to each other. The first light-transmitting section 203 guides the reflected light in a transverse direction. The second light-emitting reflective surface 204-2 is disposed at the end of the first light-transmitting section 203 that is transversely away from the first light-emitting section 202. The second light-emitting reflective surface 204-2 is configured to reflect the reflected light guided by the first light-transmitting section 203 to the second light-emitting surface 204-1, so that the reflected light from the second light-emitting reflective surface 204-2 is emitted forward through the second light-emitting surface 204-1.
[0061] As a specific embodiment of the third light-emitting section 206, referring to Figures 2-6 and 17-21, the third light-emitting section 206 includes a third light-emitting surface 206-1 and a third light-emitting reflective surface 206-2 disposed opposite to each other. The second light-transmitting section 205 guides the reflected light in a transverse direction. The third light-emitting reflective surface 204-2 is disposed at the end of the second light-transmitting section 205 that is transversely away from the first light-emitting section 202. The third light-emitting reflective surface 206-2 is configured to reflect the reflected light guided by the second light-transmitting section 205 to the third light-emitting surface 206-1, so that the reflected light from the third light-emitting reflective surface 206-2 is emitted forward through the third light-emitting surface 206-1.
[0062] As a specific embodiment of the first light-transmitting part 203, referring to Figures 5, 6 and 21, the first light-transmitting part 203 includes a first front sidewall 203-1 and a first rear sidewall 203-2. Both the first front sidewall 203-1 and the first rear sidewall 203-2 are total reflection surfaces. After the light reflected by the first reflection surface 202-2 enters the first light-transmitting part 203, the light can be reflected back and forth between the first front sidewall 203-1 and the first rear sidewall 203-2, and finally guided to the second light-emitting reflection surface 204-2, effectively improving the utilization rate of light.
[0063] As a specific embodiment of the second light-transmitting part 205, referring to Figures 5, 6 and 21, the second light-transmitting part 205 includes a second front sidewall 205-1 and a second rear sidewall 205-2. Both the second front sidewall 205-1 and the second rear sidewall 205-2 are total reflection surfaces. After the light reflected by the second reflection surface 202-3 enters the second light-transmitting part 205, the light can be reflected back and forth between the second front sidewall 205-1 and the second rear sidewall 205-2, and finally guided to the third light-emitting reflection surface 206-2, effectively improving the utilization rate of light.
[0064] It should be noted that there are two specific implementations of the above-mentioned total internal reflection mask. The first specific implementation is to coat the optical surface with a reflective coating to form a total internal reflection surface. The second specific implementation is to utilize the principle of total internal reflection, that is, when light enters a medium with a lower refractive index from a medium with a higher refractive index, if the angle of incidence is greater than a certain critical angle (the light is away from the normal), the refracted light will disappear, and all the incident light will be reflected and will not enter the medium with a lower refractive index. This can be achieved by reasonably setting the angle of incidence of the received light on the optical surface, so that the optical surface forms a total internal reflection surface.
[0065] Preferably, referring to Figures 2-8, the light guide element further includes a fourth light emitting section 207, which is disposed on one side of the first light emitting section 202 along the vertical direction. It can be the upper side or the lower side. The first light emitting section 202 also includes a third reflective surface 202-4, which is configured to reflect part of the collimated beam vertically to the fourth light emitting section 207, so that the reflected light is emitted forward through the fourth light emitting section 207. This adds another light emitting area to the vertical optical path of the light guide element that forms the accompanying illuminated light pattern, increases the light emission angle of the light passing through the light guide element, and effectively expands the vertical width of the accompanying illuminated light pattern.
[0066] As a specific embodiment of the fourth light-emitting section, referring to Figures 2-8, the fourth light-emitting section 207 includes a fourth light-emitting surface 207-1 and a fourth light-emitting reflective surface 207-2 disposed opposite to each other. The reflected light from the third reflective surface 202-4 is transmitted downward, and the fourth light-emitting reflective surface 207-2 is correspondingly disposed below the third reflective surface 202-4. The fourth light-emitting reflective surface 207-2 is configured to reflect the light reflected by the third reflective surface 202-4 to the fourth light-emitting surface 207-1, so that the reflected light from the fourth light-emitting reflective surface 207-2 is emitted forward through the fourth light-emitting surface 207-1.
[0067] It should be noted that the third reflecting surface 202-4 is disposed above the first light-emitting surface 202-1. That is, the light of the collimated beam located in the upper region is reflected downward by the third reflecting surface 202-4, and then reflected forward by the fourth light-emitting reflecting surface 207-2 to the fourth light-emitting surface 207-1. Finally, it is emitted forward by the fourth light-emitting surface 207-1 to form the fourth accompanying light-emitting beam 400. The fourth accompanying light-emitting beam 400 is located below the first accompanying light-emitting beam 100.
[0068] As a specific embodiment of the first light-emitting surface 202-1, referring to Figure 5, the first light-emitting surface 202-1 is a concave curved surface formed by the contour line of the concave curve along the sweep line. The sweep line is a straight line or arc extending vertically, so that the first accompanying light-emitting beam 100 emitted through the first light-emitting surface 202-1 diffuses in the lateral (left-right direction); as another specific embodiment of the first light-emitting surface 202-1, the first light-emitting surface 202-1 can also be a plane.
[0069] The second aspect of this application provides a vehicle lighting module, as shown in Figure 9. As a basic embodiment of the vehicle lighting module of this application, it includes an illumination concentrator 1, a secondary concentrator 2, a lens 3, an illumination source 4, and a secondary light source 5. The secondary concentrator 2 is disposed below the illumination concentrator 1. The light emitted from the illumination source 4 is adapted to be focused by the illumination concentrator 1 and then projected by the lens 3 to form an illumination pattern. The secondary concentrator 2 is a light guide element provided in the first aspect of this application. The secondary light source 5 is disposed corresponding to the concentrator 201, so that the light emitted from the secondary light source 5 is adapted to be focused by the secondary concentrator 1 and then projected by the lens 3 to form an illumination pattern. After the light is focused by the concentrator 2 and projected by the lens 3, it forms a lighting pattern, thus enabling the accompanying lighting function of the headlight module. Taking the headlight module as a high beam module, auxiliary high beam module or ADB module as an example, the headlight module is lit up in the low beam condition, so that the headlight module can also appear lit up, effectively improving the appearance. Moreover, the accompanying light source 5 only needs to set one LED, which can form at least two light-emitting areas in the lateral light path through the light guide element, effectively expanding the lateral width of the accompanying lighting pattern and having a uniform lighting effect.
[0070] Further, referring to Figures 2-6, the light guide element also includes a second light-transmitting section 205 and a third light-emitting section 206. The first light-emitting section 202 is sequentially connected to the second light-transmitting section 205 and the third light-emitting section 206 along a second side in the transverse direction. The first light-emitting section 202 also includes a second reflective surface 202-3, which is configured to reflect a portion of the collimated beam toward the second light-transmitting section 205, so that the second light-transmitting section 205 guides the reflected light to the third light-emitting section 206 for forward emission. This allows a light guide element that forms an accompanying illuminated light pattern to be formed. The three light-emitting areas emit a second accompanying light-emitting beam 200, a first accompanying light-emitting beam 100, and a third accompanying light-emitting beam 300 arranged sequentially from right to left. The second light-emitting part 204 and the third light-emitting part 206 are respectively arranged on both sides of the optical axis of the lens 3. The second light-emitting part 204 is configured such that the light emitted from the second light-emitting part 204 is directed toward the light-incident surface of the lens 3 located on the second side of the optical axis. The third light-emitting part 206 is configured such that the light emitted from the third light-emitting part 206 is directed toward the light-incident surface of the lens 3 located on the first side of the optical axis. Specifically, referring to Figures 6 and 10, a first accompanying light beam 100 is formed by the emission from the first light-emitting section 202. The first accompanying light beam 100 is directly projected forward by the lens 3. The second light-emitting section 204 is located to the right of the first light-emitting section 202. A second accompanying light beam 200 is formed by the emission from the second light-emitting surface 204-1 of the second light-emitting section 204, which is located to the right of the first accompanying light beam 100. The second light-emitting surface 204-1 is a refractive surface, so that the second accompanying light beam 200 is directed towards the incident surface of the lens 3 located to the left of the optical axis through refraction, forming a larger incident beam. The angle is such that after being projected forward by the lens 3, the left side of the accompanying illuminated light pattern is widened. The third light-emitting part 206 is located to the left of the first light-emitting part 202. The third light-emitting part 206 emits light through the third light-emitting surface 206-1 to form a third accompanying light-emitting beam 300 located to the left of the first accompanying light-emitting beam 100. The third light-emitting surface 206-1 is a refractive surface, so that the third accompanying light-emitting beam 300 is directed towards the light-incident surface of the lens 3 located to the right of the optical axis through refraction, forming a larger incident angle, so that after being projected forward by the lens 3, the right side of the accompanying illuminated light pattern is widened.
[0071] Specifically, the second light-emitting surface 204-1 and the third light-emitting surface 206-1 are inclined to the optical axis of the lens 3. By adjusting the angle between the second light-emitting surface 204-1 and the optical axis of the lens 3, and the angle between the third light-emitting surface 206-1 and the optical axis of the lens 3, the lateral widening of the final illuminated light pattern can be controlled to meet the design requirements. When installed on a vehicle, the projection angle between the second light-emitting surface 204-1 and the optical axis of the lens 3 on the horizontal plane is greater than or equal to 61° and less than or equal to 81°, and the projection angle between the third light-emitting surface 206-1 and the optical axis of the lens 3 on the horizontal plane is greater than or equal to 61° and less than or equal to 81°.
[0072] It should be noted that the second light-emitting surface 204-1 and the third light-emitting surface 206-1 are provided with optical patterns, so that the light emission of the second accompanying light-emitting beam 200 and the third accompanying light-emitting beam 300 is uniform. Furthermore, the optical pattern is a columnar pattern extending in the vertical direction (up and down direction) so as to diffuse the lateral light emission angle of the second accompanying light-emitting beam 200 and the third accompanying light-emitting beam 300.
[0073] In a preferred embodiment, the vehicle headlight module of this application further includes a baffle 6, which is disposed between the accompanying condenser 2 and the lens 3. The baffle 6 includes a first baffle reflective surface 601 and a second baffle reflective surface 602. The first baffle reflective surface 601 is located on the first side of the optical axis of the lens 3 along the transverse direction. The first baffle reflective surface 601 is configured to reflect the light emitted from the third light-emitting part 206 to the light-incident surface of the lens 3, and then project it onto the second side of its optical axis through the lens 3. The second baffle reflective surface 602 is located on the second side of the optical axis of the lens 3 along the transverse direction. The second baffle reflective surface 602 is configured to reflect the light emitted from the second light-emitting part 204 to the light-incident surface of the lens 3, and then project it onto the second side of its optical axis through the lens 3. Specifically, referring to Figures 6, 12, and 13, the second accompanying light beam 200 emitted from the second light-emitting section 204 on the right is directed towards the second baffle reflector 602 located on the left side of the optical axis of the lens 3. After being reflected by the second baffle reflector 602, it is directed forward and to the right towards the light-incident surface of the lens 3, and then projected onto the right side of the optical axis of the lens 3. The arrangement of the second baffle reflector 602 allows the second accompanying light beam 200 to have a longer light transmission path under the limited front-to-back space between the accompanying condenser 2 and the lens 3, and it can enter the light-incident surface of the lens 3 at a larger incident angle. After the light is projected forward by the lens 3, the accompanying illumination pattern has... The third accompanying light beam 300 emitted from the third light-emitting section 206 on the left is directed toward the first baffle reflector 601 on the right side of the optical axis of the lens 3. After being reflected by the first baffle reflector 601, it is directed forward and to the left toward the light-incident surface of the lens 3, and then projected onto the left side of the optical axis of the lens 3. The arrangement of the first baffle reflector 602 allows the third accompanying light beam 300 to have a longer light transmission path under the limitation of the front and rear space size between the accompanying condenser 2 and the lens 3, and can enter the light-incident surface of the lens 3 at a larger incident angle. After the light is projected forward by the lens 3, the accompanying illumination pattern has a greater left-side widening.
[0074] To extend the vertical width of the accompanying illuminated light pattern, as shown in Figures 2-10, the light guide element further includes a fourth light emitting section 207. The fourth light emitting section 207 is disposed below the first light emitting section 202. The first light emitting section 202 also includes a third reflective surface 202-4. The third reflective surface 202-4 is configured to reflect a portion of the collimated beam downwards to the fourth light emitting section 207, so that the reflected light is emitted forward through the fourth light emitting section 207 to form a fourth accompanying light emitting beam 400 located below the first accompanying light emitting beam 100. The fourth accompanying light emitting beam 400 is directed toward the light incident surface of the lens 3 located below the optical axis, so that it can be refracted by the lens 3 and projected upwards onto the optical axis, thereby effectively extending the upper width of the accompanying illuminated light pattern.
[0075] Furthermore, referring to Figures 12 and 13, the baffle also includes a third baffle reflective surface 603. The third baffle reflective surface 603 is located below the optical axis of the lens 3, and is configured to reflect the light emitted from the fourth light-emitting part 207 and the light emitted from the first light-emitting part 202 upward and forward to the light-incident surface of the lens 3. This allows the first accompanying light-emitting beam 100 and the fourth accompanying light-emitting beam 400 to be incident forward and upward onto the light-incident surface of the lens 3 with a large incident angle, thereby further effectively expanding the upper side of the accompanying illumination pattern. At the same time, after the first accompanying light-emitting beam 100 and the fourth accompanying light-emitting beam 400 are projected out by the lens 3, the brightness of the upper edge of the accompanying illumination pattern can also be improved, thus achieving a better appearance illumination effect. It should be noted that the aforementioned third baffle reflector 603 reflects at least the light rays of the first accompanying light beam 100 located on the lower side and the light rays of the fourth accompanying light beam 400 located on the lower side forward and upward toward the light-incident surface of the lens 3.
[0076] It should be noted that, referring to Figures 12, 13, and 15, the first baffle reflective surface 601, the second baffle reflective surface 602, and the third baffle reflective surface 603 form a semi-enclosed structure. This structure further expands the vertical and horizontal width of the accompanying illumination pattern while also reflecting and utilizing light rays directed to the left, right, and lower sides. This improves the utilization rate of light emitted through the accompanying concentrator 2, effectively avoids stray light generation, improves the light pattern quality of the accompanying illumination pattern, and enhances the aesthetics of the headlight module's illumination effect. The baffle 6 and lens 3 are fixedly mounted on the vehicle via the lens bracket 8.
[0077] In some specific embodiments, referring to Figures 2-4, 9, 10, 12 and 15, the lighting concentrator 1 and the accompanying concentrator 2 are integrally molded parts, which facilitates manufacturing and assembly. The lighting concentrator 1 and the accompanying concentrator 2 can be formed into an integral part by injection molding, for example, they can be integrally injection molded using PMMA (polymethyl methacrylate) material.
[0078] In some specific embodiments, the vehicle headlight module also includes a circuit board 7, on which the lighting source 4 and the accompanying light source 5 are jointly disposed, improving the integration of components and facilitating assembly. Furthermore, the circuit board 7 is mounted on the radiator 9 by mounting screws 10, which facilitates the arrangement of heat dissipation space.
[0079] In some specific embodiments, the headlight module of this application can be a high beam module. The light emitted from the lighting source 4 is suitable for being focused by the lighting concentrator 1 and then projected by the lens 3 to form a high beam pattern. The accompanying light source 5 is configured to be lit in the low beam condition, thereby realizing the accompanying lighting function of the high beam module, making the appearance of the high beam module have a lighting effect and improving its aesthetics.
[0080] Furthermore, the vehicle lighting module of this application is an ADB vehicle lighting module, i.e., an adaptive vehicle lighting module. Referring to Figure 16, the illumination concentrator 1 is a needle-shaped concentrator, which includes several needle-shaped sub-concentrators. The illumination source 4 includes several illumination sub-sources, and the illumination sub-sources are configured in a one-to-one correspondence with the needle-shaped sub-concentrators, thereby controlling the on / off state of the several illumination sub-sources to achieve the adaptive adjustment function of the vehicle lighting module of this application. Referring to Figure 16, the needle-shaped concentrator and the accompanying concentrator 2 are separate structures. The needle-shaped concentrator is mounted on the circuit board 5 via a concentrator bracket 11, and the accompanying concentrator 2 has mounting holes on the circuit board 5. The lens 3 is fixedly mounted on the vehicle via a lens bracket 8.
[0081] To better understand the technical solution of this application, the following description is based on the preferred technical features of the vehicle lighting module of this application.
[0082] Referring to Figures 1-9, the vehicle headlight module of this application includes an illumination concentrator 1, a companion concentrator 2, a lens 3, an illumination source 4, and a companion light source 5. The companion concentrator 2 is located below the illumination concentrator 1. The light emitted from the illumination source 4 is suitable for being focused by the illumination concentrator 1 and then projected by the lens 3 to form an illumination pattern. The companion concentrator 2 is a solid light conductor integrally formed, which includes a concentrating part 201, a first light-emitting part 202, a first light-transmitting part 203, a second light-emitting part 204, a second light-transmitting part 205, a third light-emitting part 206, and a fourth light-emitting part 207. The light emitted by the companion light source 5 is focused by the concentrator 201 to form a collimated beam that propagates forward. The first light-emitting part 202 is provided with... Positioned in front of the focusing section 201, the first light-emitting section 202 includes a first light-emitting surface 202-1, a first reflective surface 202-2, a second reflective surface 202-3, and a third reflective surface 202-4. The second reflective surface 202-3 and the first reflective surface 202-2 are located on the left and right sides of the first light-emitting surface 202-1, respectively, and the third reflective surface 202-4 is located above the first light-emitting surface 202-1. The collimated beam located in the middle region is directly emitted forward through the first light-emitting surface 202-1 to form a first accompanying light-emitting beam 100. The right side of the first light-emitting section 202 is sequentially connected to the first light-transmitting section 203 and the second light-emitting section 204. The second light-emitting section 204 includes oppositely arranged... The second light-emitting surface 204-1 and the second light-emitting reflective surface 204-2 are used. The collimated beam located in the right-side region is reflected to the right by the first reflective surface 202-2, then guided to the second light-emitting reflective surface 204-2 by the first light-transmitting part 203, and then reflected again by the second light-emitting reflective surface 204-2 to the second light-emitting surface 204-1 before being emitted forward to form the second accompanying light-emitting beam 200. The left side of the first light-emitting part 202 is sequentially connected to the second light-transmitting part 205 and the third light-emitting part 206. The third light-emitting part 206 includes a third light-emitting surface 206-1 and a third light-emitting reflective surface 206-2 arranged opposite to each other. The collimated beam located in the left-side region is reflected to the left by the second reflective surface 202-3. The light is reflected and then guided by the second light-transmitting part 205 to the third light-emitting reflective surface 206-2. It is then reflected by the third light-emitting reflective surface 206-2 to the third light-emitting surface 206-1 and emitted forward to form the third accompanying light-emitting beam 300. The fourth light-emitting part 207 is located below the first light-emitting part 202. The fourth light-emitting part 207 includes a fourth light-emitting surface 207-1 and a fourth light-emitting reflective surface 207-2 that are disposed opposite to each other. The light of the collimated beam located in the upper region is reflected downward by the third reflective surface 202-4, then reflected forward by the fourth light-emitting reflective surface 207-2 to the fourth light-emitting surface 207-1, and finally emitted forward by the fourth light-emitting surface 207-1 to form the fourth accompanying light-emitting beam 400.This technical solution only requires one accompanying light source 5 to be provided corresponding to the focusing part 201 of the accompanying condenser 2 to realize the first accompanying light-emitting beam 100, the second accompanying light-emitting beam 200, and the third accompanying light-emitting beam 300 in the left and right directions. Referring to Figure 12, the first accompanying light-emitting beam 100 is directly projected forward through the lens 3, while the second accompanying light-emitting beam 200 is projected forward and to the left onto the light-incident surface of the lens 3, thereby projecting it to the left side of the accompanying illuminated light pattern through the lens 3, thus widening the left side of the accompanying illuminated light pattern. The third accompanying light-emitting beam 300 is projected forward and to the right onto the lens. The light is incident on the incident surface of lens 3, and is projected onto the right side of the accompanying illuminated light pattern through lens 3, thus expanding the right-side exit angle of the accompanying illuminated light pattern. The fourth accompanying illuminated light beam 300 is directed forward toward the incident surface of lens 3 located below the optical axis, and is then refracted by lens 3 and projected forward and upward toward the upper side of the accompanying illuminated light pattern, thus expanding the upper side of the accompanying illuminated light pattern. See Figure 14 for details. The final accompanying illuminated light pattern has a left-right angle of 35°, an upper angle of 25°, and a lower angle of 2.5°, thus forming an accompanying illumination effect with a large exit angle, and the four exit areas formed improve the uniformity of the light pattern.
[0083] In the preferred embodiment described above, referring to Figure 12, a baffle 6 can be provided between the accompanying condenser 2 and the lens 3. The baffle 6 includes a first baffle reflective surface 601, a second baffle reflective surface 602, and a third baffle reflective surface 603. The first baffle reflective surface 601 and the second baffle reflective surface 602 are located on the right and left sides of the optical axis of the lens 3, respectively. The third baffle reflective surface 603 is located on the lower side of the optical axis of the lens 3. The second accompanying light beam 200 is directed towards the second baffle reflective surface 602, and after being reflected by the second baffle reflective surface 602, it is directed forward and to the right towards the light-incident surface of the lens 3. Then, it is projected by the lens 3 to the right side of the accompanying illuminated light pattern, which can be incident on the light-incident surface of the lens 3 at a larger incident angle, further expanding the right-side light-out angle of the accompanying illuminated light pattern. The third accompanying light beam 300 is directed towards the first baffle reflective surface 601, and after being reflected by the first baffle reflective surface 602, it is directed forward and to the right towards the light-incident surface of the lens 3. After being reflected by surface 601, the light beam is directed forward and to the left towards the incident surface of lens 3, and then projected by lens 3 onto the left side of the accompanying illuminated light pattern. This allows the light beam to enter the incident surface of lens 3 at a larger incident angle, further widening the left side of the accompanying illuminated light pattern. The first accompanying light beam 100 and the fourth accompanying light beam 400 are directed towards the third baffle reflector surface 601, and after being reflected by the third baffle reflector surface 603, they are directed forward and upward towards the incident surface of lens 3, and then projected by lens 3 onto the upper side of the accompanying illuminated light pattern. This allows the light beam to enter the incident surface of lens 3 at a larger incident angle, further widening the upper side of the accompanying illuminated light pattern. See Figure 14 for details. The final accompanying illuminated light pattern has a left-right angle of 45°, an upper angle of 40°, and a lower angle of 2.5°, thus forming an accompanying illumination effect with a large light-emitting angle and more uniform light emission.
[0084] The third aspect of this application provides a vehicle lamp, including the vehicle lamp module provided in the first aspect of this application, with the accompanying light source 5 configured to illuminate in low beam conditions. It possesses all the beneficial effects of the vehicle lamp module of this application, which will not be elaborated here.
[0085] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.
[0086] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately.
[0087] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.
Claims
1. A light guide element, characterized in that, The device includes a focusing section (201), a first light-emitting section (202), a first light-transmitting section (203), and a second light-emitting section (204). The focusing section (201) is configured to converge the light received by the focusing section (201) to form a collimated beam that is transmitted forward. The first light-emitting section (202) is disposed in front of the focusing section (201). The first light-emitting section (202) is connected to the first light-transmitting section (203) and the second light-emitting section (204) in sequence along a first side in the lateral direction. The first light-emitting section (202) includes a first light-emitting surface (202-1) and a first reflective surface (202-2). The first light-emitting surface (202-1) is configured to emit part of the collimated beam forward, and the first reflective surface (202-2) is configured to reflect part of the collimated beam toward the first light-transmitting section (203), so that the first light-transmitting section (203) guides the reflected light to the second light-emitting section (204) for forward emission.
2. The light guide element according to claim 1, characterized in that, The light guide element further includes a second light-transmitting part (205) and a third light-emitting part (206). The first light-emitting part (202) is connected to the second light-transmitting part (205) and the third light-emitting part (206) in sequence along the second side of the transverse direction. The first light-emitting part (202) further includes a second reflective surface (202-3). The second reflective surface (202-3) is configured to reflect part of the collimated beam toward the second light-transmitting part (205) so that the second light-transmitting part (205) guides the reflected light to the third light-emitting part (206) for forward emission.
3. The light guide element according to claim 2, characterized in that, The first reflective surface (202-2), the first light-emitting surface (202-1), and the second reflective surface (202-3) are arranged sequentially in the transverse direction, wherein, The first reflective surface (202-2) is located near the first light-emitting part (202) on a first side along the transverse direction, and the second reflective surface (202-3) is located near the first light-emitting part (202) on a second side along the transverse direction; or, The first reflective surface (202-2) is located on the second side of the first light-emitting part (202) along the lateral direction, and the second reflective surface (202-3) is located on the first side of the first light-emitting part (202) along the lateral direction.
4. The light guide element according to claim 2, characterized in that, The second light-emitting section (204) includes a second light-emitting surface (204-1) and a second light-emitting reflective surface (204-2) disposed opposite to each other. The second light-emitting reflective surface (204-2) is configured to reflect the reflected light guided by the first light-transmitting section (203) to the second light-emitting surface (204-1), so that the reflected light from the second light-emitting reflective surface (204-2) is emitted forward through the second light-emitting surface (204-1); and / or, The third light-emitting part (206) includes a third light-emitting surface (206-1) and a third light-emitting reflective surface (206-2) disposed opposite to each other. The third light-emitting reflective surface (206-2) is configured to reflect the reflected light guided by the second light-transmitting part (205) to the third light-emitting surface (206-1), so that the reflected light from the third light-emitting reflective surface (206-2) is emitted forward through the third light-emitting surface (206-1).
5. The light guide element according to claim 2, characterized in that, The first light-transmitting portion (203) includes a first front sidewall (203-1) and a first rear sidewall (203-2), both of which are total reflective surfaces; and / or, The second light-transmitting part (205) includes a second front sidewall (205-1) and a second rear sidewall (205-2), both of which are total reflective surfaces.
6. The light guide element according to any one of claims 1-5, characterized in that, The light guide element further includes a fourth light emitting part (207), which is disposed on one side of the first light emitting part (202) along the vertical direction. The first light emitting part (202) further includes a third reflective surface (202-4), which is configured to reflect part of the collimated beam vertically to the fourth light emitting part (207) so that the reflected light is emitted forward through the fourth light emitting part (207).
7. The light guide element according to claim 6, characterized in that, The fourth light-emitting part (207) includes a fourth light-emitting surface (207-1) and a fourth light-emitting reflective surface (207-2) disposed opposite to each other. The fourth light-emitting reflective surface (207-2) is configured to reflect the light reflected by the third reflective surface (202-4) to the fourth light-emitting surface (207-1), so that the reflected light from the fourth light-emitting reflective surface (207-2) is emitted forward through the fourth light-emitting surface (207-1).
8. The light guide element according to any one of claims 1-5, characterized in that, The first light-emitting surface (202-1) is a plane; or, the first light-emitting surface (202-1) is a concave curved surface formed by the contour line of a concave curve along a sweep line, which is a straight line or arc extending vertically.
9. A vehicle headlight module, characterized in that, The system includes an illumination concentrator (1), an accompanying concentrator (2), a lens (3), an illumination source (4), and an accompanying light source (5). The accompanying concentrator (2) is disposed below the illumination concentrator (1). The light emitted from the illumination source (4) is adapted to be focused by the illumination concentrator (1) and then projected by the lens (3) to form an illumination light pattern. The accompanying concentrator (2) is a light guide element as described in any one of claims 1-8. The accompanying light source (5) is disposed corresponding to the concentrator (201) so that the light emitted from the accompanying light source (5) is adapted to be focused by the accompanying concentrator (2) and then projected by the lens (3) to form an accompanying point illumination light pattern.
10. The vehicle headlight module according to claim 9, characterized in that, The light guide element further includes a second light-transmitting part (205) and a third light-emitting part (206). The first light-emitting part (202) is connected to the second light-transmitting part (205) and the third light-emitting part (206) in sequence along the second side of the transverse direction. The first light-emitting part (202) further includes a second reflective surface (202-3). The second reflective surface (202-3) is configured to reflect part of the collimated beam toward the second light-transmitting part (205), so that the second light-transmitting part (205) guides the reflected light to the third light-emitting part (206) for forward emission. The second light-emitting part (204) and the third light-emitting part (206) are respectively arranged on both sides of the optical axis of the lens (3). The second light-emitting part (204) is configured such that the light emitted from the second light-emitting part (204) is directed toward the light-incident surface of the lens (3) located on the second side of the optical axis. The third light-emitting part (206) is configured such that the light emitted from the third light-emitting part (206) is directed toward the light-incident surface of the lens (3) located on the first side of the optical axis.
11. The vehicle headlight module according to claim 10, characterized in that, The second light-emitting part (204) includes a second light-emitting surface (204-1), which is configured such that light rays emitted from the second light-emitting part (204) are directed toward the light-incident surface of the lens (3). The third light-emitting part (206) includes a third light-emitting surface (206-1), which is configured such that light rays emitted from the third light-emitting part (206) are directed toward the light-incident surface of the lens (3). Wherein, the angle between the second light-emitting surface (204-1) and the optical axis of the lens (3) is greater than or equal to 61° and less than or equal to 81°, and the angle between the third light-emitting surface (206-1) and the optical axis of the lens (3) is greater than or equal to 61° and less than or equal to 81°.
12. The vehicle headlight module according to claim 10, characterized in that, The headlight module also includes a baffle (6), which is disposed between the accompanying condenser (2) and the lens (3). The baffle (6) includes a first baffle reflective surface (601) and a second baffle reflective surface (602). The first baffle reflective surface (601) is located on the first side of the optical axis of the lens (3) in the transverse direction. The first baffle reflective surface (601) is configured to reflect the light emitted from the third light-emitting part (206) to the light-incident surface of the lens (3), and then project it onto the first side of the optical axis through the lens (3). The second baffle reflective surface (602) is located on the second side of the optical axis of the lens (3) in the transverse direction. The second baffle reflective surface (602) is configured to reflect the light emitted from the second light-emitting part (204) to the light-incident surface of the lens (3), and then project it to the second side of the optical axis through the lens (3).
13. The vehicle headlight module according to claim 12, characterized in that, The light guide element further includes a fourth light emitting part (207), which is disposed below the first light emitting part (202). The first light emitting part (202) further includes a third reflective surface (202-4), which is configured to reflect a portion of the collimated beam downward to the fourth light emitting part (207), so that the reflected light is emitted forward through the fourth light emitting part (207). The baffle also includes a third baffle reflective surface (603), which is located below the optical axis of the lens (3) and is configured to reflect the light emitted from the fourth light-emitting part (207) and the light emitted from the first light-emitting part (202) upward and forward to the light-incident surface of the lens (3).
14. The vehicle headlight module according to claim 9, characterized in that, The lighting concentrator (1) and the accompanying concentrator (2) are integrally molded parts.
15. The vehicle headlight module according to claim 9, characterized in that, The illumination concentrator (1) is a needle-shaped concentrator, which includes several needle-shaped sub-concentrators. The illumination source (4) includes several illumination sub-sources, and the illumination sub-sources are arranged in a one-to-one correspondence with the needle-shaped sub-concentrators.
16. The vehicle headlight module according to claim 9, characterized in that, The vehicle headlight module also includes a circuit board (7), and the lighting source (4) and the accompanying light source (5) are both disposed on the circuit board (7).
17. The vehicle headlight module according to any one of claims 9-16, characterized in that, The headlight module is a high beam module. The light emitted from the lighting source (4) is suitable for being focused by the lighting concentrator (1) and then projected by the lens (3) to form a high beam pattern.
18. A vehicle light, characterized in that, The vehicle headlight module includes any one of claims 9-17, wherein the accompanying light source (5) is configured to illuminate in low beam mode.