Optical conductors, automotive lighting modules and vehicles

Abstract

This invention relates to a light conductor, comprising a first light-incident surface, a reflective surface corresponding to the first light-incident surface, and a light-emitting surface. The reflective surface extends along a predetermined direction such that at least one segment of the light conductor tapers into a cone shape from one end near the first light-incident surface toward the opposite end. The reflective surface includes multiple reflective stepped surfaces, each inclined at a predetermined angle toward the light-emitting surface. The predetermined angle is set such that, in the operating state of the light conductor, the first light-incident surface receives a first incident light beam, and at least a portion of the first incident light beam is reflected by the multiple reflective stepped surfaces and emitted from the light-emitting surface to form an emitted light beam. Furthermore, the light-emitting area of ​​the emitted light beam on the light-emitting surface is larger than the light-incident area of ​​the first incident light beam on the first light-incident surface. Furthermore, this invention also provides a vehicle lighting module and a vehicle. The light conductor of this invention can achieve a large light-emitting area as required by regulations using fewer light sources.

Description

Technical Field

[0001] This invention relates to automotive lighting, and more specifically, to a light conductor. Furthermore, this invention also relates to a lighting module and a vehicle. Background Technology

[0002] Optical conductors, as commonly used optical components, are widely used in automotive lighting systems. They feature a narrow, elongated light-emitting surface, an avant-garde design, and flexible structural arrangement. Currently, optical conductors are generally used for signal light functions, such as turn signals, position lights, and daytime running lights. By placing a light source and necessary collimating structures or optical devices at the side or rear of the optical conductor, light propagates within the conductor and is emitted through the light-emitting surface, forming a specific illumination range and light energy distribution to achieve the signal light function.

[0003] However, to meet the regulatory requirements for the light-emitting area of ​​signal lights, conventional technologies require the arrangement of numerous light sources, resulting in bulky headlight structures and large headlight sizes, which has become a technical challenge in this field. Furthermore, existing technologies typically only accommodate one type of light input, such as side or rear light input, and the light conductor cannot be used in conjunction with multiple lighting systems. A single light conductor cannot simultaneously guide the emitted light from multiple lighting systems. These two factors lead to low utilization of the light conductor, wasting internal headlight space and hindering overall vehicle installation and headlight design.

[0004] In view of this, it is necessary to design an optical conductor that can overcome the above-mentioned technical difficulties and effectively solve or alleviate the above-mentioned technical defects. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a light conductor that enables the emitted light area to meet regulatory requirements while reducing the number of light sources required.

[0006] Furthermore, the technical problem to be solved is to provide a vehicle lighting module that, while meeting regulatory requirements for the emitted light area, requires fewer light sources.

[0007] To address the aforementioned technical problems, the present invention provides an optical conductor, comprising a first light-incident surface, a reflective surface corresponding to the first light-incident surface, and a light-emitting surface. The reflective surface extends along a predetermined direction such that at least one segment of the optical conductor tapers into a cone shape from one end near the first light-incident surface toward the opposite end. The reflective surface comprises a plurality of reflective step surfaces, each inclined at a predetermined angle toward the light-emitting surface. The predetermined angle is set such that, in the operating state of the optical conductor, the first light-incident surface receives a first incident light beam, at least a portion of the first incident light beam is reflected by the plurality of reflective step surfaces, and then emitted from the light-emitting surface to form an emitted light beam. Furthermore, the light-emitting area of ​​the emitted light beam on the light-emitting surface is greater than the light-incident area of ​​the first incident light beam on the first light-incident surface.

[0008] Preferably, the light-emitting surface is a stepped surface.

[0009] Preferably, the light-emitting surface is a plane or a smooth curved surface.

[0010] Preferably, the reflective step surface is a total reflective step surface.

[0011] Preferably, it further includes a second light-incident surface. In the working state of the light conductor, the second light-incident surface receives the second incident light beam, and the second incident light beam is refracted by the second light-incident surface and the light-out surface before being emitted from the light-out surface.

[0012] More preferably, the second light-incident surface includes a plurality of light-incident stepped surfaces, and the light-incident stepped surfaces and the reflective stepped surfaces are correspondingly connected to each other so that the plurality of light-incident stepped surfaces and the plurality of reflective stepped surfaces cooperate to form a stepped structure.

[0013] More preferably, the angle between the light-incident step surface and the reflective step surface is set to a predetermined angle, so that when the light conductor is in use, the light beam incident from the first light-incident surface can enter the reflective surface without being blocked by the second light-incident surface.

[0014] Specifically, multiple second light-incident surfaces, first light-incident surfaces, and reflective surfaces that cooperate with the first light-incident surface are arranged.

[0015] Preferably, the interior of the optical conductor has a partially hollowed-out area.

[0016] Specifically, the partially hollowed-out area is provided with a parabolic total internal reflection step surface that mates with the first light-incident surface and / or a convex lens surface that mates with the second light-incident surface.

[0017] Specifically, the reflective step surface is a parabolic total internal reflection step surface and / or the incident light step surface is a convex lens surface.

[0018] Based on the above-mentioned optical conductor technical solution, the present invention provides a vehicle lamp module, the vehicle lamp including any of the above-mentioned optical conductors and at least one primary optical system, the primary optical system being used to emit a light beam to the light incident portion corresponding to the optical conductor.

[0019] Preferably, the at least one primary optical system is at least one of a high beam lighting system, a low beam lighting system, and a signal light system.

[0020] Based on the above-mentioned headlight module, the present invention provides a vehicle that includes any of the headlight modules described above.

[0021] Through the above technical solution, the optical conductor of the present invention innovatively extends the reflective surface along a set direction, so that at least one segment of the optical conductor of the present invention is tapered from one end near the first light-incident surface toward the opposite end. The reflective surface includes a plurality of reflective step surfaces, each inclined toward the light-emitting surface at a set tilt angle. Due to the plurality of spaced reflective step surfaces provided on the inclined side of the cone, and the reflective step surfaces of the present application being set to be inclined toward the light-emitting surface at a preset tilt angle, the first incident beam, after being reflected by the plurality of reflective step surfaces and emitted from the emission surface, forms an emission beam with a larger illumination range than the emission beam formed by the prior art, and the light-emitting area meets regulatory requirements.

[0022] In a further preferred embodiment, the optical conductor of the present invention is provided with a second light-incident surface. The first light-incident surface and the second light-incident surface can respectively guide side-incident light and rear-incident light, making full use of the optical conductor space. Furthermore, one or more primary optical systems can be provided on both the first light-incident surface and the second light-incident surface. The optical conductor of the present application can simultaneously guide the light beams generated by multiple primary optical systems, thereby realizing the integration of multiple optical systems.

[0023] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the optical conductor according to a specific embodiment of the present invention.

[0025] Figure 2 This is a specific embodiment of the optical path diagram formed by parallel light incident on a photoconductor.

[0026] Figure 3 This is a structural schematic diagram of a vehicle headlight module according to a specific embodiment of the present invention.

[0027] Figure 4 This is a light path diagram formed by parallel light incident on the first light-incident surface of the vehicle headlight module according to a specific embodiment of the present invention.

[0028] Figure 5 This is a light path diagram formed by parallel light incident on the second light-incident surface of the vehicle headlight module according to a specific embodiment of the present invention.

[0029] Figure 6 This is a light path diagram formed by parallel light incident on the first and second light incident surfaces of the vehicle headlight module according to a specific embodiment of the present invention.

[0030] Figure 7 This is a light path diagram formed by parallel light incident on the first and second light incident surfaces of a vehicle headlight module according to another specific embodiment of the present invention.

[0031] Figure 8 This is a light pattern diagram of the illumination spot formed by a single light source of the vehicle headlight module combined with a concentrator, according to a specific embodiment of the present invention.

[0032] Figure 9 A structural diagram of a vehicle headlight module according to a specific embodiment of the present invention, wherein the second light-incident surface guides the low beam illumination beam and the light-dark cutoff line structure is positioned at the top.

[0033] Figure 10 yes Figure 9 The longitudinal section of the optical path at the second incident light plane.

[0034] Figure 11 yes Figure 9 The resulting near-beam illumination pattern is shown in the diagram.

[0035] Figure 12 A structural diagram of a vehicle headlight module according to a specific embodiment of the present invention, wherein the second light-incident surface guides the low beam illumination beam and the light-dark cutoff line structure is set at the bottom.

[0036] Figure 13 yes Figure 12 Longitudinal sectional optical path diagram at the second incident light plane.

[0037] Figure 14 yes Figure 12 The resulting near-beam illumination pattern is shown in the diagram.

[0038] Figure 15 This is another specific embodiment of the present invention, showing the optical path diagram formed by the incident divergent light beam on the vehicle headlight module.

[0039] Figure 16 yes Figure 15 Top view.

[0040] Figure 17 This is a light path diagram formed by a divergent beam incident on a vehicle headlight module according to a specific embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures

[0042] 1. First incident surface 2. Reflecting surface

[0043] 3. Light-emitting surface 4. Reflective stepped surface

[0044] 5 Second incident surface 6 Incident step surface

[0045] 7 First incident beam 8 Second incident beam

[0046] 9. Outgoing beam 10. Optical conductor

[0047] 11 Light source 12 Parabolic reflective surface

[0048] 13 Collimated surface 14 Parabolic total internal reflection step surface

[0049] 15 Convex Lens Curved Surface Detailed Implementation

[0050] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0051] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" generally refer to the upper, lower, left, and right positions of the optical conductor under normal operating conditions. "Inner" and "outer" refer to the inner and outer contours of the relevant components. Terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance; they do not constitute a limitation on the scope of protection of this invention. The "light-incident area" involved in this application specifically falls into two categories: first, when the light-incident surface is planar, the "light-incident area" refers to the area of ​​the portion of the light-incident surface irradiated by the light beam; second, when the light-incident surface is curved, the "light-incident area" refers to the projected area of ​​the irradiated area of ​​the incident light beam on the curved surface onto a plane perpendicular to the normal of the light-incident surface. The term "light-emitting area" in this application specifically falls into two categories: first, when the light-emitting surface is planar, the "light-emitting area" refers to the area of ​​the light-emitting surface irradiated by the emitted beam; second, when the light-emitting surface is curved, the "light-emitting area" refers to the projected area of ​​the irradiated area of ​​the emitted beam on the curved surface onto a plane perpendicular to the normal of the light-emitting surface. Furthermore, the term "parallel" in this application is not absolute parallelism.

[0052] like Figure 1As shown, this application provides an optical conductor including a first light-incident surface 1, a reflective surface 2 corresponding to the first light-incident surface 1, and a light-emitting surface 3. The reflective surface 2 extends along a set direction so that at least one segment of the optical conductor narrows from one end near the first light-incident surface 1 toward the opposite end to form a cone shape. The reflective surface 2 includes a plurality of reflective step surfaces 4, each inclined at a set tilt angle toward the light-emitting surface 3. The set tilt angle is configured such that, in the use state of the optical conductor, the first light-incident surface 1 receives a first incident beam 7, and at least a portion of the first incident beam 7 can be reflected by the plurality of reflective step surfaces 4 and emitted from the light-emitting surface 3 to form an emitted beam 9. The light-emitting area of ​​the emitted beam 9 on the light-emitting surface 3 is greater than the light-incident area of ​​the first incident beam 7 on the first light-incident surface 1.

[0053] In the above basic implementation, the cone shape can include a pylon shape and a frustum shape, for example, see Figure 1 As shown, a preferred cone-shaped or frustum-shaped light conductor can have one side set as a straight surface and the other side as a sloped surface. When the light conductor is set as a cone shape, the reflective step surfaces 4 can be arranged alternately along the slope of the cone. The first incident beam 7 enters from the first incident surface 1 and passes through multiple reflective step surfaces 4 arranged at intervals along a set direction to form a reflected beam wider than the first incident beam 7. These reflected beams exit from the exiting surface 3 to form an exiting beam 9. These spaced and extended reflective step surfaces 4 allow the exiting beam 9 to have a larger illumination range. When the light conductor is set as a frustum-shaped, as... Figure 2 As shown, the reflective step surface 4 can be disposed on the side of the frustum. The first incident beam 7 enters from the first incident surface 1 and passes through multiple reflective step surfaces 4 arranged at intervals along a predetermined direction to form a reflected beam wider than the first incident beam 7. These reflected beams exit from the exiting surface 3 to form the exiting beam 9. These spaced and extended reflective step surfaces 4 enable the exiting beam 9 to have a larger illumination range, and as... Figure 2 As shown, by setting the tilt angle of the reflective step surface 4 towards the light-emitting surface 3 as the set tilt angle, the light-emitting area of ​​the emitted beam 9 on the light-emitting surface 3 is greater than the light-incident area of ​​the first incident beam 7 on the first incident surface 1. Furthermore, the beam emitted by one light source can correspond to multiple reflective step surfaces 4, thereby enabling the photoconductor of this application to use fewer light sources and meet the regulatory requirements for a larger light-emitting area of ​​the signal light.

[0054] As a preferred implementation method, such as Figure 7 As shown, the light-emitting surface 3 can be a stepped surface, thereby reducing the weight of the light conductor. Furthermore, since a light distribution lens needs to be installed at the light-emitting surface 3 of the light conductor during vehicle installation, setting the light-emitting surface 3 as a stepped surface can increase the tilt of the light-emitting surface and reduce assembly interference caused by the light conductor.

[0055] As a preferred embodiment, the light-emitting surface 3 can be a plane or a smooth curved surface, thereby avoiding the light-emitting surface 3 from having a significant impact on the light pattern.

[0056] As a preferred embodiment, the reflective step surface 4 can be a total reflection step surface, so that the light beam passing through the reflective step surface 4 can be completely reflected, thereby improving the light efficiency.

[0057] As a preferred implementation method, such as Figure 1 As shown, the optical conductor also includes a second incident surface 5. In the operating state of the optical conductor, the second incident surface 5 receives a second incident light beam 8. The second incident light beam 8, after being refracted by the second incident surface 5 and the exiting surface 3, exits from the exiting surface 3. Figure 5 As shown, compared to traditional light conductors that only allow illumination beams to enter through the side or rear, the light conductor of this application can simultaneously adapt to both side-incident and rear-incident light modes. Furthermore, multiple primary optical systems can be set on the first light-incident surface 1 and the second light-incident surface 5, enabling the light-exiting surface 3 of the light conductor to emit multiple beams. This provides multiple illumination patterns through a single optical system, increasing the utilization rate of the light conductor.

[0058] As a specific implementation method, as shown in the figure, the second light-incident surface 5 includes multiple light-incident step surfaces 6. The light-incident step surfaces 6 and the reflective step surfaces 4 are correspondingly connected to each other so that the multiple light-incident step surfaces 6 and the multiple reflective step surfaces 4 cooperate to form a stepped structure. By setting multiple light-incident step surfaces 6, the gap between each reflective step surface 4 is fully utilized, and the space utilization rate of the optical conductor is increased on the basis of adapting to multiple light-incident methods.

[0059] As a preferred implementation method, such as Figure 6 As shown, the angle between the incident light step surface 6 and the reflecting light step surface 4 is set to a predetermined angle so that when the light conductor is in use, the light beam incident from the first incident light surface 1 can enter the reflecting light surface 2 without being blocked by the second incident light surface 5, thereby reducing the influence of the incident light step surface 6 on the first incident light beam 7.

[0060] As a specific implementation method, such as Figure 17As shown, the optical conductor of this embodiment includes two integral, mutually symmetrical first light-incident surfaces 1 and two second light-incident surfaces 5, and one light-out surface 3. The two reflective surfaces 2 extend along their respective set directions to form two mutually symmetrical cones. The two first reflective surfaces 2 each include multiple reflective step surfaces 4 that are inclined toward the light-out surface 3 at a set tilt angle. This results in a larger light-out area on the light-out surface 3 for the emitted light beams 9 formed from the two first light-incident surfaces 1. Multiple primary optical systems can be set at the first light-incident surfaces 1 and the second light-incident surfaces 5 to achieve multiple light patterns emitted from a single optical conductor. Under the technical guidance of this invention, those skilled in the art can conceive of setting multiple first light-incident surfaces 1, second light-incident surfaces 5, and light-out surface 3 without mutual interference, so that the optical conductor can receive light beams incident from more directions, and the optical system formed by the optical conductor can achieve more light patterns.

[0061] As a preferred implementation method, such as Figure 15 As shown, the optical conductor has a partially hollowed-out area inside to reduce its weight.

[0062] As a further preferred implementation, such as Figure 15 and Figure 16 As shown, the partially hollowed-out area can be provided with a parabolic total internal reflection step surface 14 that cooperates with the first light-incident surface 1 and / or a convex lens surface 15 that cooperates with the second light-incident surface 5. This allows the diverging beam of the light source 11 to be collimated in the light conductor. The corresponding primary optical system does not need to be equipped with a collimator. The light source 11 is placed at or near the focal point of the parabolic total internal reflection step surface 14 or the convex lens surface 15. The collimation is completed directly through the parabolic total internal reflection step surface 14 or the convex lens surface 15 of the light conductor in this preferred embodiment, and finally the output beam 9 is formed. This further simplifies the optical system and reduces the size of the optical system.

[0063] In a preferred embodiment, the reflective step surface 4 can be a parabolic total internal reflection step surface 14 and / or the incident light step surface 6 can be a convex lens surface 15. The diverging light emitted by the light source 11, positioned at or near the first incident light surface 1 and the second incident light surface 5, can be collimated by its corresponding parabolic total internal reflection step surface 14 or convex lens surface 15. This eliminates the need for a collimating structure in the primary optical system with the light conductor's incident light surface to collimate the light beam, reducing the size of the optical system. It should be noted that "near the focal point" of the parabolic total internal reflection step surface 14 or convex lens surface 15 refers to a range of 2 mm around the focal point.

[0064] Based on the photoconductor of the above-described technical solution of the present invention, the present invention further provides a vehicle lamp module, which includes the photoconductor described in any of the above claims and at least one primary optical system, wherein the primary optical system is used to emit a light beam to the light incident portion corresponding to the photoconductor. For example... Figure 3 As shown, a light source 11 and a condenser can be disposed on the first light-incident surface 1 and the second light-incident surface 5 of the light conductor in this application, such as... Figure 4 As shown, the concentrator is configured to collimate the emitted beam of the light source 11, and the light source 11 and the concentrator are configured such that the collimated parallel beam can enter multiple reflective step surfaces 4 of the optical conductor. Thus, the concentrator positioned at the first incident surface 1 collimates the beam emitted by its corresponding light source 11 to form a parallel beam. After entering the optical conductor, the parallel beam is reflected by multiple reflective step surfaces 4 spaced apart along a predetermined direction to form a reflected beam wider than the incident beam. These reflected beams exit from the exit surface 3 to form an exit beam 9 with a larger illumination range. This allows the optical conductor of this application to achieve a larger luminous area with a single light source. The illumination pattern generated by a single light source combined with the concentrator entering from the first incident surface 1 of the optical conductor in this embodiment is as follows: Figure 8 As shown, the illumination pattern a can be used for signal lights and high beams. Those skilled in the art will understand that multiple light sources 11 can be arranged at the light-incident surface. The beams emitted from the multiple light sources 11 exit from the exiting surface 3 to form multiple emitted beams 9. These emitted beams 9 can combine to form a predetermined light pattern. Simultaneously, because the multiple reflective step surfaces 4 are set to be tilted at a predetermined angle towards the light-incident surface 3, the light-exiting area of ​​the emitted beams 9 exiting from the light-incident surface 3 is larger than the light-incident area of ​​the first incident beam 7 entering from the first light-incident surface 1. Therefore, the light conductor can use fewer light sources to achieve the required light-exiting area. Furthermore, the light conductor of this application can also have a primary optical system arranged on the second light-incident surface 5, such as... Figure 9 and Figure 10 As shown, in this embodiment, a light source 11, a parabolic reflector 12, and a cutoff line structure are provided at the second light-incident surface 5. The corresponding light-incident step surface 6 is set as a collimating surface 13. The focal point of the collimating surface 13 is set near the boundary of the parabolic reflector 12, and this boundary has a cutoff line structure corresponding to the shape of the cutoff line. The focal point of the parabolic reflector 12 is set at or near the light source 11. The light beam emitted from the light source 11 is reflected by the parabolic reflector 12 and partially intercepted by the cutoff line structure before entering through the collimating surface 13. After being collimated by the collimating surface 13, it exits from the light-emitting surface 3 to form a near-beam pattern or a part of a near-beam pattern. In this embodiment, the emitted light beam 9 is projected as follows: Figure 11 The near-beam type b is shown. As a specific implementation method, such as... Figure 12 and Figure 13As shown, the second light-incident surface 5 is equipped with a light source 11, a parabolic reflector 12, and a corresponding light-incident step surface 6, which is set as a collimating surface 13. The focal point of the collimating surface 13 is set on the parabolic reflector 12 near the light source 11. The diverging beam emitted by the light source 11 forms a primary light pattern with a central bright spot on the parabolic reflector 12. This primary light pattern is imaged by the collimating surface 13 and emitted from the light-outceasing surface 3 to form an outgoing beam 9 that is projected onto the road surface. This outgoing beam 9 can be projected to form a signal light pattern or a high beam pattern, such as... Figure 14 The image shows the light pattern c formed by the vehicle headlight module of this embodiment. This light pattern c can be used as a high beam pattern or a signal light pattern. For the vehicle headlight module of this application, the collimation of the diverging light emitted by the light source 11 can be completed by the primary optical system. Alternatively, the reflective step surface 4 can be set as a parabolic total internal reflection step surface 14, and the incident light step surface can be set as a convex lens surface 15. Or, the parabolic total internal reflection step surface 14 and the convex lens surface 15 can be directly set in the partially hollowed-out area of ​​the light conductor, and collimation can be completed by the set parabolic total internal reflection step surface 14 and convex lens surface 15.

[0065] In a preferred embodiment, at least one primary optical system includes a high beam lighting system, a low beam lighting system, and a signal light system. The high beam lighting system, low beam lighting system, and signal light system are disposed on the light-incident surface of the light conductor, thereby guiding multiple light beam patterns through a single light conductor, and thus achieving the integration of low beam, high beam, and signal light. In addition, the first light-incident surface 1 and its corresponding primary optical system of the vehicle lamp module of this application can form a light pattern by emitting light beams separately from the second light-incident surface 5 and its corresponding primary optical system, or they can emit light beams simultaneously to form different light patterns, or the light beams emitted simultaneously and the two ultimately form a light pattern. Furthermore, each light-incident surface of the light conductor of this application can be provided with one or more primary optical systems.

[0066] Based on the above-described vehicle headlight module of the present invention, the present invention further provides a vehicle whose headlights include the above-described vehicle headlight module, thereby enabling the use of fewer light sources to achieve a light-emitting area of ​​the emitted beam that meets regulatory requirements.

[0067] This invention provides a preferred embodiment of a vehicle lighting module, such as... Figure 7As shown, the headlight module includes a light conductor and a primary optical system. The light conductor includes a first light-incident surface 1, a second light-incident surface 5, a reflective surface 2 corresponding to the first light-incident surface 1, and a light-emitting surface 3. The reflective surface 2 extends along a predetermined direction, such that at least one segment of the light conductor tapers into a frustum shape from one end near the first light-incident surface 1 towards the opposite end. The reflective surface 2 includes multiple reflective stepped surfaces 4, each inclined at a predetermined angle towards the light-emitting surface 3. The reflective stepped surfaces 4 are disposed on the side of the frustum. The second light-incident surface 5 includes multiple light-incident stepped surfaces 6, such that the multiple light-incident stepped surfaces 6 and the multiple reflective stepped surfaces 4 cooperate to form a stepped structure. The reflective surface 2 is a total reflection surface, and the light-emitting surface 3 is a smooth stepped surface. In the operating state of the light conductor, the first light-incident surface 1 receives at least a portion of the first incident light beam 7. The first incident beam 7, after being reflected by multiple reflective step surfaces 4, exits from the light-emitting surface 3 to form an emitted beam 9. The multiple reflective step surfaces 4 are configured to be inclined towards the light-emitting surface 3 at a predetermined angle, meaning that the projection of the reflective step surfaces onto the plane perpendicular to the emitted beam 9 is greater than their projection onto the plane perpendicular to the incident beam 7. This results in the emitted beam 9 having an area larger than the incident area of ​​the first incident beam 7 entering from the first incident surface 1. Furthermore, the angle between the incident step surface 6 and the reflective step surface 5 is set to a predetermined angle so that, in the operating state of the light conductor, the first incident beam 7 entering from the first incident surface 1 can enter the reflective surface 2 without being blocked by the second incident surface 5. The primary optical system includes a light source 11 and a condenser. The light conductor, by setting the first incident surface 1 and the second incident surface 5, can accommodate various light incident methods. In this embodiment, the first incident surface 1 corresponds to side-incident lighting, and the second incident surface 5 corresponds to rear-incident lighting, thereby facilitating the spatial layout of the internal structure of the headlight. The first light-incident surface 1 of the light conductor is provided with multiple primary optical systems for forming a signal light pattern. Each primary optical system at the first light-incident surface 1 corresponds to multiple reflective step surfaces 4. Thus, the divergent light emitted by the light source 11 of the primary optical system is converged by a concentrator to form a parallel first incident beam 7 that enters the first light-incident surface 1 of the light guide. One light source 11 corresponds to multiple spaced reflective step surfaces 4, thereby forming a reflected beam through reflection by the multiple spaced reflective step surfaces 4, so that the outgoing beam 9 has a large illumination range. Furthermore, the multiple reflective step surfaces 4 are configured such that the projected area on the plane perpendicular to the outgoing beam 9 is larger than the incident area of ​​the first incident beam 7 entering from the first light-incident surface 1, so that the exiting area of ​​the outgoing beam 9 exiting from the exiting surface 3 is larger than the incident area of ​​the first incident beam 7 entering from the first light-incident surface 1. Thus, the vehicle lamp module of this application can use fewer light sources to make the light-emitting area of ​​the signal light pattern formed by the outgoing beam 9 corresponding to the first light-incident surface meet regulatory requirements.The light-incident step surface 6 of the vehicle headlight module is equipped with a primary optical system for forming the high beam pattern. Each primary optical system corresponds to a light-incident step surface 6. The divergent light emitted by the light source 11 is converged by a condenser to form a parallel beam. After passing through the light-incident step surface 6 and the light-emitting surface, the parallel beam forms an outgoing beam 9. The outgoing beam 9 can form a high beam illumination pattern on the road surface. Thus, the vehicle headlight module can realize the functions of a signal light and a high beam by an independent optical system. Furthermore, the angle between the light-incident step surface 6 and the reflective step surface 5 is set to a predetermined angle so that the first incident beam 7 is not blocked by the light-incident step surface 6, thereby increasing the light efficiency of the vehicle headlight module. In addition, the reflective surface 2 is set as a total reflection surface, so that the first incident beam 7 can be completely reflected by the reflective surface 2 to the light-emitting surface 3, which improves the light efficiency of the headlight module. The light-emitting surface 3 is set as a smooth stepped surface, thereby reducing the influence of the light-emitting surface 3 on the beam when it is transmitted out of the light-emitting surface 3. Setting the light-emitting surface 3 as a stepped surface can reduce the weight of the headlight, and the stepped surface can increase the tilt of the light-emitting surface 3, reducing the assembly interference generated during headlight assembly.

[0068] As can be seen from the above description, the advantages of this invention can be summarized as follows: First, the light guide can increase the illumination range, thereby enabling the use of fewer light sources to achieve a light-emitting area of ​​the emitted beam that meets regulatory requirements. Second, it can simultaneously adapt to various light incident methods, such as side-incident and rear-incident lighting. Third, it can guide beams generated by various primary optical systems, forming different light patterns, enabling the vehicle headlight module to integrate high and low beams with signal lights. Fourth, it can directly collimate the beam emitted from the light source through the light guide, reducing the size of the vehicle headlight module.

[0069] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0070] 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, the present invention will not describe the various possible combinations separately.

[0071] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A photoconductor, characterized in that, The light conductor includes a first light-incident surface (1), a reflective surface (2) corresponding to the first light-incident surface (1), and a light-exiting surface (3). The reflective surface (2) extends along a set direction so that at least one segment of the light conductor narrows from one end near the first light-incident surface (1) toward the opposite end to form a cone shape. The reflective surface (2) includes a plurality of reflective step surfaces (4) each inclined toward the light-exiting surface (3) at a set tilt angle. The set tilt angle is set such that, in the use state of the light conductor, the first light-incident surface (1) receives a first incident light beam (7), and at least a portion of the first incident light beam (7) can be reflected by the plurality of reflective step surfaces (4) and then emitted from the light-exiting surface (3) to form an emitted light beam (9). The emitted light beam (9) on the light-exiting surface (3) has a larger light-incident area than the first incident light beam (7) on the first light-incident surface (1). It also includes a second light-incident surface (5). In the working state of the light conductor, the second light-incident surface (5) receives a second incident light beam (8). After the second incident light beam (8) is refracted by the second light-incident surface (5) and the light-outceasing surface (3), it is emitted from the light-outceasing surface (3). The second light-incident surface (5) includes a plurality of light-incident stepped surfaces (6). The light-incident stepped surfaces (6) and the reflective stepped surfaces (4) are correspondingly connected to each other so that the plurality of light-incident stepped surfaces (6) and the plurality of reflective stepped surfaces (4) cooperate to form a stepped structure.

2. The optical conductor according to claim 1, characterized in that, The light-emitting surface (3) is a stepped surface.

3. The optical conductor according to claim 1, characterized in that, The light-emitting surface (3) is a plane or a smooth curved surface.

4. The optical conductor according to claim 1, characterized in that, The reflective step surface (4) is a total reflective step surface.

5. The optical conductor according to claim 1, characterized in that, The angle between the light-incident step surface (6) and the reflective step surface (4) is set to a predetermined angle so that, in the working state of the light conductor, the first incident light beam (7) incident from the first light-incident surface (1) can enter the reflective surface (2) without being blocked by the second light-incident surface (5).

6. The optical conductor according to claim 1, characterized in that, The second light-incident surface (5), the first light-incident surface (1), and the reflective surface (2) that cooperates with the first light-incident surface (1) are arranged in multiple ways.

7. The optical conductor according to claim 5, characterized in that, The optical conductor has a partially hollowed-out area inside.

8. The optical conductor according to claim 7, characterized in that, The partially hollowed-out area is provided with a parabolic total internal reflection step surface that cooperates with the first light-incident surface (1) and / or a convex lens surface that cooperates with the second light-incident surface (5).

9. The optical conductor according to claim 1, characterized in that, The reflective step surface (4) is a parabolic total reflection step surface and / or the incident light step surface (6) is a convex lens surface.

10. A vehicle headlight module, characterized in that, The invention includes a light conductor as described in any one of claims 1 to 9 and at least one primary optical system, the primary optical system being used to emit a light beam to the light incident portion corresponding to the light conductor.

11. The vehicle headlight module according to claim 10, characterized in that, The at least one primary optical system is at least one of a high beam lighting system, a low beam lighting system, and a signal light system.

12. A vehicle, characterized in that, Includes the vehicle lighting module according to claim 10 or 11.

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