Vehicle lamp module and lighting system
By using a laser light source and fiber optic connector in the vehicle headlight, combined with wavelength conversion components and drive components, a compact structure and adjustable brightness have been achieved, solving the problems of complex structure and insufficient brightness of traditional vehicle headlights, and enhancing the vehicle's market competitiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YLX INC
- Filing Date
- 2025-08-08
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional car lights have complex structures, take up a lot of space, and have insufficient light output, which cannot meet the needs of modern cars for lightweighting and intelligent driving.
Using laser as the lighting source, the vehicle headlight module is connected via fiber optic connector. A wavelength conversion component generates fluorescence under laser excitation, and the laser incident angle is adjusted by a light guide and a drive assembly, achieving a compact structure and adjustable brightness.
This has enabled the miniaturization of vehicle lights and high brightness output, enriching the application scenarios of vehicle lights and enhancing the market competitiveness of vehicles.
Smart Images
Figure CN224364708U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive lighting technology, and more specifically, to an automotive lighting module and lighting system. Background Technology
[0002] With the continuous development and maturation of intelligent driving technology, users' requirements for vehicle lights are also increasing. Vehicle lights are not only lighting tools, but also an important component of intelligent driving systems. However, current vehicle lights still face many challenges in terms of structure and performance. On the one hand, traditional vehicle lights have complex structures and occupy a large amount of space, making it difficult to meet the needs of modern automobiles for lightweighting and miniaturization; on the other hand, their light output brightness is insufficient, failing to provide adequate vision support for intelligent driving.
[0003] Therefore, designing a compact and high-brightness vehicle headlight has become a critical issue that researchers urgently need to address. Utility Model Content
[0004] This application provides a vehicle headlight module and a lighting system.
[0005] According to a first aspect of this application, an embodiment of this application provides a vehicle lighting module adapted to connect to an optical fiber connector, the optical fiber connector being used to emit a specified laser. The vehicle lighting module includes a base, a reflector, a wavelength converter, a light guide, and a driving assembly. The reflector is mounted on the base and, together with the base, defines a reflective cavity. The reflective cavity has an inlet and an outlet, and the specified laser is incident on the reflective cavity through the inlet. The wavelength converter is disposed on the base. Under the excitation of the specified laser, the wavelength converter generates a specified fluorescence, which is reflected by the reflector to the outlet. The light guide is disposed in the optical path of the specified laser and is used to guide the specified laser to the wavelength converter. The driving assembly is drively connected to the optical fiber connector and is used to control the rotation of the optical fiber connector to adjust the angle at which the specified laser is incident on the wavelength converter.
[0006] In some possible embodiments, the fiber optic connector has a first rotational position in which the optical axis corresponding to the designated laser emitted from the fiber optic connector is parallel to the light-emitting surface of the wavelength conversion element.
[0007] In some possible embodiments, the light guide includes a first cylindrical mirror disposed in the optical path of the designated laser, used to converge and deflect the designated laser before it is incident on the wavelength conversion device; wherein the first cylindrical mirror includes a first incident surface and a first exit surface, the first incident surface is a convex curved surface used to converge the designated laser emitted from the fiber optic connector; the first exit surface is a plane and is inclined relative to the optical axis of the designated laser to change the propagation direction of the designated laser.
[0008] In some possible embodiments, the first cylindrical mirror further includes a bonding surface, which is a plane and located between the first light-incident surface and the first light-outceasing surface, and is connected to the base.
[0009] In some possible embodiments, the fiber optic connector has a second rotational position in which the angle between the optical axis corresponding to the designated laser emitted from the fiber optic connector and the light-emitting surface of the wavelength conversion element is an acute angle.
[0010] In some possible embodiments, the light guide includes a second cylindrical mirror, which is disposed in the optical path of the specified laser and is used to converge the specified laser before it is incident on the wavelength conversion device; wherein the second cylindrical mirror includes a second light-incident surface and a second light-outcident surface, the second light-incident surface is a convex curved surface, used to converge the specified laser emitted from the fiber optic connector; the second light-outcident surface is a plane and is perpendicular to the optical axis of the specified laser.
[0011] In some possible embodiments, the base includes a fixed part and a light-blocking part connected together, and a wavelength conversion element is disposed on the fixed part; the light-blocking part is located on the side of the fixed part facing the reflective cavity and protrudes relative to the fixed part; the light-blocking part is used to block the designated laser light reflected by the wavelength conversion element from being emitted to the light outlet.
[0012] In some possible embodiments, the headlight module further includes a focusing lens, which is disposed opposite to the light outlet to converge the light emitted through the light outlet and transmit it to the outside. The base includes a reflector located between the light outlet and the focusing lens. A portion of the light emitted through the light outlet is directly incident on the focusing lens, while another portion of the light emitted through the light outlet is reflected by the reflector and then incident on the focusing lens.
[0013] In some possible embodiments, the reflective assembly includes a reflector and a connector. The reflector is mounted on a base and together with the base defines a reflective cavity. The connector is movably connected to the reflector and is used to connect an optical fiber connector. A drive assembly is drivenly connected to the connector and is used to control the rotation of the connector relative to the reflector to adjust the angle at which a specified laser is incident on the wavelength conversion element.
[0014] In some possible embodiments, the reflector has a guide portion on the side facing the connector, and the connector has a mating portion on the side facing the reflector. The guide portion and the mating portion are slidably nested together so that the connector can rotate relative to the reflector.
[0015] According to a second aspect of this application, embodiments of this application also provide a lighting system, which includes a housing, a laser module, and the aforementioned vehicle headlight module. The laser module includes a laser generator, an optical fiber, and an optical fiber connector, with the laser generator and the optical fiber connector respectively connected to both ends of the optical fiber. The laser generator is disposed outside the housing and is used to generate a specified laser beam. The vehicle headlight module is connected to the optical fiber connector and is located on the optical path of the specified laser beam. The vehicle headlight module is disposed inside the housing.
[0016] This application provides a vehicle lamp module and a lighting system. The vehicle lamp module is adapted to connect to an optical fiber connector, which is used to emit a specified laser. The vehicle lamp module includes a base, a reflector, a wavelength converter, a light guide, and a driving component. The wavelength converter generates a specified fluorescence under the excitation of the specified laser, and the specified fluorescence is reflected to the light outlet via the reflector.
[0017] On one hand, the headlight module in this application uses laser as the lighting source. Compared with LED light sources, lasers have a smaller spread and higher brightness. While ensuring sufficient luminous flux, the size of optical components in the headlight module can be reduced. In addition, the headlight module is connected to a fiber optic connector, which allows for structural separation between the headlight module and the laser module. In other words, there is no need to integrate the light source (i.e., the laser module) inside the headlight module, which is beneficial for miniaturizing the headlight module design.
[0018] On the other hand, the drive component is connected to the fiber optic connector, which can control the rotation of the fiber optic connector to adjust the angle at which a specified laser is incident on the wavelength conversion element, thereby adjusting the excitation efficiency of a specified fluorescence. Therefore, with the fiber optic connector in different rotation positions, the overall light output brightness of the headlight module can be adjusted due to the different excitation efficiencies of the specified fluorescence. This enriches the application scenarios of the headlight module and can enhance the market competitiveness of vehicles equipped with this headlight module. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the lighting system provided in the embodiments of this application.
[0021] Figure 2 yes Figure 1 A cross-sectional structural diagram of the vehicle lamp module in the lighting system shown.
[0022] Figure 3 yes Figure 1 This is a schematic diagram of another cross-sectional structure of the vehicle lamp module in the lighting system shown.
[0023] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the headlight module in another state.
[0024] Figure 5 yes Figure 3 The diagram shows another structural schematic of the drive component in the headlight module. Detailed Implementation
[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.
[0026] This application provides a lighting system 100 that can be applied to a vehicle and serve as the vehicle's headlights (e.g., low beam headlights, headlights, etc.). Please refer to... Figure 1 The lighting system 100 may include a laser module 120 and a vehicle headlight module 200. The laser module 120 generates a specified laser L, and the vehicle headlight module 200 is connected to the laser module 120 and located in the optical path of the specified laser L. Specifically, the specified laser L may be a blue laser; for example, the center wavelength of the specified laser L may be between 445 nm and 470 nm.
[0027] In some possible embodiments, the laser module 120 may be integrated inside the headlight module 200 to make the overall structure of the lighting system 100 more compact.
[0028] In other possible embodiments, such as Figure 1 As shown, the lighting system 100 may further include a housing 140, within which the headlight module 200 is disposed. The housing 140 serves to fix and protect the lighting system 100. Specifically, the housing 140 may be made of metal (e.g., aluminum, copper, alloy, etc.) to provide better heat dissipation for the headlight module 200.
[0029] The laser module 120 is disposed outside the housing 140 to achieve spatial separation from the vehicle light module 200. Specifically, the laser module 120 may include a laser generator 1210, an optical fiber connector 1230, and an optical fiber 1250. The laser generator 1210 is disposed outside the housing 140 and is used to generate a specified laser L. Specifically, the laser generator 1210 may be a blue laser tube, a blue laser chip, etc. The laser generator 1210 and the optical fiber connector 1230 are respectively connected to the two ends of the optical fiber 1250, and the optical fiber connector 1230 is connected to the vehicle light module 200. Specifically, the optical fiber 1250 may be a quartz optical fiber, a plastic optical fiber, a fluoride optical fiber, etc.
[0030] Therefore, the designated laser L generated by the laser generator 1210 is coupled into the laser via the optical fiber 1250, coupled out through the laser interface 1230, and enters the vehicle headlight module 200. Specifically, the optical fiber connector 1230 can be disposed in the housing 140, and the housing 140 is also provided with a mounting hole 1410 for the optical fiber 1250 to pass through. The mounting hole 1410 passes through opposite sides of the housing 140, and the end of the optical fiber 1250 away from the laser generator 1210 passes through the mounting hole 1410 and connects to the optical fiber connector 1230.
[0031] In this embodiment, by placing the laser generator 1210 outside the housing 140, the overall size of the headlight module 200 can be reduced, achieving a miniaturized design. Furthermore, the high temperature generated by the laser generator 1210 during operation can be isolated outside the housing 140, achieving "photothermal separation," thereby reducing the internal temperature of the housing 140 and ensuring the working efficiency of the lighting system 100. In addition, the laser generator 1210 can be flexibly installed in a heat dissipation area of the vehicle via the optical fiber 1250; for example, the heat dissipation area could be the exhaust area of a vehicle's internal cooling fan, improving the heat dissipation efficiency of the laser generator 1210.
[0032] In this embodiment, the vehicle lamp module 200 is connected to the fiber optic connector 1230 and is set in the optical path where the designated laser L is located. It is used to generate a designated fluorescence F under the excitation of the designated laser L and emit the designated fluorescence F to the outside world to realize the illumination function of the vehicle lamp.
[0033] Please see Figure 2 The vehicle headlight module 200 may include a base 20, a reflector 30, a wavelength conversion component 40, a light guide component 50, and a driving component 60. The reflector 30 is mounted on the base 20 and together with the base 20 defines a reflector cavity 302. The reflector cavity 302 has a light exit port 304 and a light entrance port 306, through which a specified laser L is incident into the reflector cavity 302.
[0034] A wavelength conversion element 40 is disposed on the base 20. Under the excitation of a specified laser L, the wavelength conversion element 40 generates a specified fluorescence F, which is reflected by the reflector 30 to the light output port 304. A light guide 50 is disposed in the optical path of the specified laser L and is used to guide the specified laser L to the wavelength conversion element 40. A drive assembly 60 is connected to the fiber optic connector 1230 and is used to control the rotation of the fiber optic connector 1230 to adjust the angle at which the specified laser L is incident on the wavelength conversion element 40.
[0035] On one hand, the headlight module 200 in this embodiment uses laser as the lighting source. Compared with LED light sources, lasers have a smaller spread and higher brightness. While ensuring sufficient luminous flux, the size of the optical components in the headlight module 200 can be reduced. In addition, the headlight module 200 is connected to the fiber optic connector 1230, which enables structural separation between the headlight module 200 and the laser module 120. That is, there is no need to integrate the light source (i.e., the laser module 120) inside the headlight module 200, which is beneficial for miniaturizing the headlight module 200.
[0036] On the other hand, the drive assembly 60 is connected to the fiber optic connector 1230, which can control the rotation of the fiber optic connector 1230 to adjust the angle at which the specified laser L is incident on the wavelength conversion element 40, thereby adjusting the excitation efficiency of the specified fluorescence F. Therefore, when the fiber optic connector 1230 is in different rotation positions, the overall light output brightness of the vehicle lamp module 200 can be adjusted due to the different excitation efficiencies of the specified fluorescence F. This enriches the application scenarios of the vehicle lamp module 200 and can enhance the market competitiveness of vehicles equipped with this vehicle lamp module 200.
[0037] The specific structure of the headlight module 200 is described below.
[0038] In this embodiment, the base 20 is used to fix and support the devices (e.g., wavelength conversion element 40, light guide element 50, etc.) in the vehicle lamp module 200. It can be made of metal materials (e.g., copper, aluminum, iron, copper-aluminum composite material, aluminum alloy material) and can provide a good heat dissipation effect for the wavelength conversion element 40 disposed on the base 20.
[0039] Specifically, the base 20 may include a fixed portion 210 and a light-blocking portion 230 connected to each other. The fixed portion 210 is generally flat, and the wavelength conversion element 40 is disposed on the fixed portion 210. The light-blocking portion 230 is generally block-shaped, located on the side of the fixed portion 210 facing the reflective cavity 302, and protrudes relative to the fixed portion 210. The light-blocking portion 230 is used to block the designated laser L reflected by the wavelength conversion element 40 from being emitted to the light outlet 304. Here, "blocking" means that the designated laser L reflected by the wavelength conversion element 40 can only irradiate the outer surface of the light-blocking portion 230 and cannot pass through the light-blocking portion 230.
[0040] Therefore, the light-blocking part 230 in this embodiment can prevent a portion of the designated laser L from leaking to the outside after being directly reflected by the wavelength conversion element 40, so that the illumination spot generated by the headlight module 200 contains some of the light spots corresponding to the designated laser L (e.g., blue light spots), which can ensure the illumination effect of the headlight module 200. In addition, the light-blocking part 230 can also prevent a portion of the designated laser L from leaking into the external environment, thereby avoiding potential harm to personnel, such as preventing accidents such as laser light entering the eyes of pedestrians.
[0041] It should be noted that the names "fixing part" and "light-blocking part" are used for ease of description. In specific examples, there may or may not be a clear dividing line between the two structures. In some possible embodiments, the fixing part 210 and the light-blocking part 230 can be integrally formed. For example, the base 20 can be formed by stamping, hot pressing, or casting from metal material. The fixing part 210 and the light-blocking part 230 are two parts at different positions on the base 20, which can improve the reliability of the connection between the two.
[0042] In this embodiment, the wavelength conversion element 40 is disposed on the side of the fixing part 210 facing the reflective cavity 302, and is located between the fiber optic connector 1230 and the light-blocking part 230. It is used to generate a specified fluorescence F under the excitation of a specified laser L. The specified fluorescence F can be green fluorescence, yellow fluorescence, etc. Specifically, the wavelength conversion element 40 can be attached to or embedded on the outer surface of the fixing part 210 to ensure the reliability of the connection between the two.
[0043] As an example, the wavelength conversion element 40 can be a fluorescent ceramic sheet, which is made by combining fluorescent materials (such as rare earth-doped oxides, nitrides, etc.) with a ceramic matrix (such as alumina, silicon nitride, etc.) to ensure the thermal stability of the wavelength conversion element 40.
[0044] As another example, the wavelength conversion element 40 can be a fluorescent coating, which can be a coating formed by directly applying a colloid mixed with fluorescent material to the outer surface of the fixing part 210. Specifically, this embodiment does not limit the implementation of the wavelength conversion element 40.
[0045] In this embodiment, the reflective component 30 is generally in the shape of a cover, which covers the base 20 and together with the base 20 defines the reflective cavity 302. As an example, one side of the reflective component 30 is provided with a light inlet 306, and the other side of the reflective component 30 is disposed opposite to the base 20 to form a light outlet 304. The light inlet 306 and the light outlet 304 are respectively connected to the reflective cavity 302, so that a specified laser L is incident into the reflective cavity 302 through the light inlet 306, and a specified fluorescence F is emitted to the outside through the light outlet 304.
[0046] In some possible embodiments, such as Figure 2 As shown, the drive assembly 60 is positioned opposite the light inlet 306, and the drive assembly 60 is located on the side of the reflector assembly 30 away from the reflector cavity 302. For example, both can be fixed to the housing 140 respectively. Specifically, the drive assembly 60 can be a three-dimensional rotating platform, with the fiber optic connector 1230 directly fixed to the three-dimensional rotating platform and rotating along a preset trajectory under the drive of the three-dimensional rotating platform to adjust the angle at which the specified laser L is incident on the wavelength conversion element 40.
[0047] In some other possible embodiments, the reflective assembly 30 may include a reflector 320 and a connector 340. The reflector 320 is disposed on the base 20 and together with the base 20 defines a reflective cavity 302. One side of the reflector 320 has a light inlet 306, and the other side of the reflector 320 is disposed opposite to the base 20 to form a light outlet 304. Specifically, the reflector 320 may be a reflector cup, and its side facing the base 20 may have a reflective layer (e.g., a dielectric reflective layer, a metal reflective layer, etc.). This reflective layer is used to reflect the designated fluorescence F emitted by the wavelength conversion element 40 to the light outlet 304.
[0048] It should be noted that the first portion of the light from the designated laser L incident on the wavelength conversion element 40 is converted into a designated fluorescence F, the second portion is reflected by the wavelength conversion element 40 to the light-blocking part 230, and the third portion is not converted into the designated fluorescence F, but is scattered by the wavelength conversion element 40 and then combined with the designated fluorescence F to form a combined light beam (e.g., white light). Therefore, the reflector 30 is specifically used to reflect this combined light beam to the light outlet 304.
[0049] As an example, the reflector 320 may be provided with multiple microstructures (e.g., a micro-mirror array) on the side facing the base 20. Each microstructure is used to accurately reflect the incident light to the light outlet 304, so as to avoid the situation where some of the specified fluorescent F cannot be emitted in the reflector 320, thereby ensuring the illumination brightness of the vehicle lamp module 200.
[0050] In this embodiment, the connector 340 is movably connected to the reflector 320 and is used to connect the fiber optic connector 1230 so that a designated laser L is incident on the reflector cavity 302. Specifically, the connector 340 may be provided with a fixing groove 3410, which extends through opposite sides of the connector 340. The fiber optic connector 1230 is connected to the side of the fixing groove 3410 opposite to the reflector cavity 302, for example, by plugging, threading, etc., and this embodiment does not specify a particular connection. Therefore, the designated laser L emitted from the fiber optic connector 1230 can be incident on the reflector cavity 302 through the fixing groove 3410.
[0051] Specifically, the side of the connector 340 facing the base 20 may also be provided with a reflective layer (e.g., a dielectric reflective layer, a metal reflective layer, etc.), which is used to reflect the specified fluorescence F emitted by the wavelength conversion element 40 to the light outlet 304, so as to improve the reflection efficiency of the specified fluorescence F.
[0052] exist Figure 3 In the illustrated embodiment, the connector 340 is located on the side of the reflector 320 facing the reflective cavity 302. The fiber optic connector 1230 is adapted to pass through the light inlet 306 and connect to the connector 340. The light inlet 306 can provide "camber space" for the fiber optic connector 1230 and the fiber optic cable 1250 connected to the fiber optic connector 1230, ensuring that the connector 340 can smoothly rotate relative to the reflector 320 with the fiber optic connector 1230. In other possible embodiments, the connector 340 may also be located on the side of the reflector 320 away from the reflective cavity 302. In this case, the light inlet 306 is used to ensure that the designated laser L can be smoothly incident into the reflective cavity 302.
[0053] In some possible embodiments, the reflector 320 has a guide portion 3230 on the side facing the connector 340, and the connector 340 has a mating portion 3430 on the side facing the reflector 320. The guide portion 3230 and the mating portion 3430 are slidably nested together to allow the connector 340 to rotate relative to the reflector 320. Therefore, with the cooperation of the guide portion 3230 and the mating portion 3430, the connector 340 can be guided to rotate smoothly relative to the reflector 320, thereby improving the stability of rotation.
[0054] Specifically, in Figure 3 In the illustrated embodiment, the guide portion 3230 is a guide groove, and the mating portion 3430 is a slider. In other possible embodiments, the guide portion 3230 is a slider, and the mating portion 3430 is a guide groove; this embodiment does not impose specific limitations.
[0055] In this embodiment, the fiber optic connector 1230 has a first rotation position and a second rotation position, which can be two extreme positions corresponding to the rotation of the fiber optic connector 1230. Of course, the fiber optic connector 1230 can also have other rotation positions (e.g., a third rotation position, a fourth rotation position, etc.), which can be intermediate rotation positions located between the first and second rotation positions.
[0056] Specifically, the rotation trajectory of the fiber optic connector 1230 can be an arc with the center of the wavelength conversion element 40 as the center and the line connecting the center of the wavelength conversion element 40 and the fiber optic connector 1230 as the radius. Therefore, during the rotation of the fiber optic connector 1230, the orientation of the fiber optic connector 1230 relative to the wavelength conversion element 40 is constantly changing, causing the angle at which the specified laser L is incident on the wavelength conversion element 40 to also constantly change.
[0057] Therefore, as the angle at which the specified laser L is incident on the wavelength conversion element 40 continuously changes, the excitation efficiency of the specified fluorescence F also changes accordingly, making the overall light output brightness of the vehicle lamp module 200 adjustable, thereby enriching the application scenarios of the vehicle lamp module 200.
[0058] exist Figure 2 and Figure 3 In the embodiment shown, the fiber optic connector 1230 is located in a first rotational position. In this first rotational position, the optical axis corresponding to the designated laser L emitted from the fiber optic connector 1230 is parallel to the light-emitting surface (not shown in the figure) of the wavelength conversion element 40.
[0059] Specifically, the light guide 50 may include a first cylindrical mirror 520, which is disposed in the optical path of the designated laser L. The first cylindrical mirror 520 is used to converge and deflect the designated laser L before it is incident on the wavelength conversion element 40. The first cylindrical mirror 520 may include a first incident surface and a first exiting surface (neither shown in the figure). The first incident surface is a convex curved surface that protrudes towards the side facing the fiber optic connector 1230, and is used to converge the designated laser L emitted from the fiber optic connector 1230. The first exiting surface is a plane and is inclined relative to the optical axis of the designated laser L, and is used to change the propagation direction of the designated laser L. That is, the angle between the exiting surface of the first cylindrical mirror 520 and the exiting surface of the wavelength conversion element 40 (not shown in the figure) is an obtuse angle. Specifically, in the first rotation position, the angle between the optical axis corresponding to the designated laser L emitted from the fiber optic connector 1230 and the optical axis of the first cylindrical mirror 520 is an acute angle.
[0060] Therefore, under the action of the first cylindrical mirror 520, the designated laser L, after being deflected along its optical axis, can be incident on the wavelength conversion element 40 at a certain angle (e.g., within the range of Brewster's angle) to ensure that the designated fluorescence F can be successfully excited. Furthermore, the first cylindrical mirror 520 can also converge the designated laser L to increase its power density, thereby improving the excitation efficiency of the designated fluorescence F. Specifically, the first cylindrical mirror 520 can be a plano-convex cylindrical mirror.
[0061] As an example, the first cylindrical mirror 520 may further include a bonding surface 5210, which is a plane located between the first light-incident surface and the first light-exit surface of the first cylindrical mirror 520 and connected to the base 20. The bonding surface 5210 is a plane formed after the first cylindrical mirror 520 has undergone edge trimming.
[0062] Therefore, in this embodiment, a portion of the structure of the first cylindrical mirror 520 is removed to form the bonding surface 5210. On one hand, this reduces the overall volume of the first cylindrical mirror 520, making the overall structure of the headlight module 200 more compact and facilitating miniaturization. On the other hand, the bonding surface 5210 increases the contact area with the base 20, allowing the first cylindrical mirror 520 to be connected to the base 20 without additional fixing brackets, thus reducing the difficulty of fixing the first cylindrical mirror 520 and the base 20. Specifically, the first cylindrical mirror 520 can be attached to or embedded in the base 20 via the bonding surface 5210; this embodiment does not impose specific limitations.
[0063] exist Figure 3 In the embodiment shown, in the first rotation position, the connector 340 can also shield the light inlet 306 to prevent the specified fluorescence F from leaking from the light inlet 306, so as to ensure the illumination brightness of the vehicle lamp module 200.
[0064] Please see Figure 4 The fiber optic connector 1230 is located in the second rotation position. In this second rotation position, the angle between the optical axis corresponding to the designated laser L emitted from the fiber optic connector 1230 and the light-emitting surface of the wavelength conversion element 40 (not shown in the figure) is an acute angle. For example, this angle can be greater than or equal to 10 degrees and less than or equal to 45 degrees. Exemplarily, this angle can be 10 degrees, 20 degrees, 25 degrees, 30 degrees, 45 degrees, etc., and this embodiment does not impose a specific limitation.
[0065] Specifically, the light guide 50 may include a second cylindrical mirror 540, which is disposed in the optical path of the designated laser L. The second cylindrical mirror 540 is used to converge the designated laser L before it is incident on the wavelength conversion element 40. The second cylindrical mirror 540 may include a second incident surface and a second exiting surface (neither shown in the figure). The second incident surface is a convex curved surface that protrudes towards the side facing the fiber optic connector 1230, and is used to converge the designated laser L emitted from the fiber optic connector 1230. The second exiting surface is a plane and is perpendicular to the optical axis of the designated laser L. That is, the angle between the exiting surface of the second cylindrical mirror 540 and the exiting surface of the wavelength conversion element 40 (not shown in the figure) is an acute angle. Specifically, in the second rotation position, the optical axis corresponding to the designated laser L emitted from the fiber optic connector 1230 coincides with the optical axis of the second cylindrical mirror 540.
[0066] Therefore, under the converging effect of the second cylindrical mirror 540, the power density of the specified laser L incident on the wavelength conversion element 40 increases, which can improve the excitation efficiency of the specified fluorescence F. Specifically, the second cylindrical mirror 540 can be a plano-convex cylindrical mirror.
[0067] As one example, the second cylindrical mirror 540 and the first cylindrical mirror 520 are connected; for instance, they can be a single, integrally formed structure to make the overall structure of the headlight module 200 more compact. As another example, the second cylindrical mirror 540 and the first cylindrical mirror 520 are spaced apart, with the second cylindrical mirror 540 connected to the reflector 320. This facilitates adjusting the mounting positions of the first cylindrical mirror 520 and the second cylindrical mirror 540 separately, reducing the difficulty of adjusting the optical path.
[0068] exist Figure 3 and Figure 4 In the embodiment shown, the drive assembly 60 is connected to the connector 340 in a transmission manner. The drive assembly 60 is used to control the connector 340 to rotate relative to the reflector 320 in order to adjust the angle at which the specified laser L is incident on the wavelength conversion member 40.
[0069] As an example, such as Figure 3 and Figure 4 As shown, the drive assembly 60 can be a linear motor, which can be located on the side of the reflector 320 opposite to the reflector cavity 302. The linear motor can include a stator and a mover (neither shown in the figure) connected together, wherein the stator can be fixed to the housing 140, and the mover can move relative to the stator. Specifically, the mover is connected to the connector 340 through an elastic element (e.g., a flexible cable) to drive the connector 340 to rotate. In addition, the reflector 320 is also provided with a clearance space for the elastic element to pass through.
[0070] It is easy to understand here that, due to the presence of the guide portion 3230 and the mating portion 3430, even if the mover moves linearly relative to the stator, the connecting member 340 can still achieve relative rotation with the reflector 320 under the nested sliding engagement of the guide portion 3230 and the mating portion 3430. In other words, the "linear motor" here only provides a force to the connecting member 340.
[0071] As another example, please refer to Figure 5 The drive assembly 60 can also employ a crank-rocker mechanism to achieve relative rotation between the connecting member 340 and the reflector 320. Figure 5 In region (a), the connecting member 340 is in the first rotational position, which corresponds to the working state of the crank-rocker mechanism; Figure 5Region (b) corresponds to the crank-rocker mechanism in its second rotational position when the connecting member 340 is in that position. Of course, in other possible examples, the drive assembly 60 could also be a rack and pinion mechanism, etc., but this embodiment does not impose specific limitations.
[0072] Please refer to it again. Figures 2 to 4 The headlight module 200 may further include a focusing lens 70, which is disposed opposite to the light outlet 304. The focusing lens 70 is used to converge the light emitted through the light outlet 304 (i.e., the combined light rays mentioned above) and transmit it to the outside. Specifically, the focusing lens 70 can be a positive lens, such as a plano-convex lens, a biconvex lens, etc. The number of focusing lenses 70 can be one or more; this embodiment does not impose a specific limitation.
[0073] In some possible embodiments, the base 20 may further include a reflective portion 250, which is located between the light exit port 304 and the condenser lens 70. This reflective portion 250 can be considered as a part of the base 20 located between the light exit port 304 and the condenser lens 70. Specifically, a portion of the light emitted through the light exit port 304 directly enters the condenser lens 70; another portion of the light emitted through the light exit port 304 is reflected by the reflective portion 250 and then enters the condenser lens 70.
[0074] Specifically, the reflector 250 can be a cutoff line reflector. The side of the cutoff line reflector facing the light outlet 304 has a reflective coating. The reflective coating can reflect another part of the light emitted through the light outlet 304 to a specific area of the condenser lens 70. In addition, the cutoff line reflector also uses part of its own structure to block part of the light, so that a bright and dark cutoff line is formed in the light spot corresponding to the light emitted from the condenser lens 70, so as to meet the light spot shape required by automotive standards.
[0075] This application provides a vehicle lamp module 200 and a lighting system 100 configured with the vehicle lamp module 200. The vehicle lamp module 200 may include a base 20, a reflector 30, a wavelength conversion element 40, a light guide element 50, and a driving component 60. The reflector 30 is disposed on the base 20 and, together with the base 20, defines a reflective cavity 302. The reflective cavity 302 has a light exit port 304 and a light entrance port 306. A specified laser L is incident on the reflective cavity 302 through the light entrance port 306.
[0076] A wavelength conversion element 40 is disposed on the base 20. Under the excitation of a specified laser L, the wavelength conversion element 40 generates a specified fluorescence F, which is reflected by the reflector 30 to the light output port 304. A light guide 50 is disposed in the optical path of the specified laser L and is used to guide the specified laser L to the wavelength conversion element 40. A drive assembly 60 is connected to the fiber optic connector 1230 and is used to control the rotation of the fiber optic connector 1230 to adjust the angle at which the specified laser L is incident on the wavelength conversion element 40.
[0077] On one hand, the headlight module 200 in this embodiment uses laser as the lighting source. Compared with LED light sources, lasers have a smaller spread and higher brightness. While ensuring sufficient luminous flux, the size of the optical components in the headlight module 200 can be reduced. In addition, the headlight module 200 is connected to the fiber optic connector 1230, which enables structural separation between the headlight module 200 and the laser module 120. That is, there is no need to integrate the light source (i.e., the laser module 120) inside the headlight module 200, which is beneficial for miniaturizing the headlight module 200.
[0078] On the other hand, the drive assembly 60 is connected to the fiber optic connector 1230, which can control the rotation of the fiber optic connector 1230 to adjust the angle at which the specified laser L is incident on the wavelength conversion element 40, thereby adjusting the excitation efficiency of the specified fluorescence F. Therefore, when the fiber optic connector 1230 is in different rotation positions, the overall light output brightness of the vehicle lamp module 200 can be adjusted due to the different excitation efficiencies of the specified fluorescence F. This enriches the application scenarios of the vehicle lamp module 200 and can enhance the market competitiveness of vehicles equipped with this vehicle lamp module 200.
[0079] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.
[0080] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application 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.
[0081] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A vehicle headlight module, characterized in that, Suitable for connecting fiber optic connectors for emitting designated laser beams, the vehicle headlight module includes: Base; A reflective component is mounted on the base and together with the base defines a reflective cavity. The reflective cavity has a light outlet and a light inlet. The designated laser light is incident into the reflective cavity through the light inlet. A wavelength conversion element is disposed on the base; the wavelength conversion element generates a specified fluorescence under the excitation of the specified laser, and the specified fluorescence is reflected to the light outlet via the reflective component; An optical guide, disposed in the optical path of the designated laser, is used to guide the designated laser to the wavelength conversion element; and A drive assembly is connected to the fiber optic connector for controlling the rotation of the fiber optic connector to adjust the angle at which the specified laser is incident on the wavelength conversion element.
2. The vehicle headlight module according to claim 1, characterized in that, The fiber optic connector has a first rotational position, in which the optical axis corresponding to the designated laser emitted from the fiber optic connector is parallel to the light-emitting surface of the wavelength conversion element.
3. The vehicle headlight module according to claim 2, characterized in that, The light guide includes a first cylindrical mirror, which is disposed in the optical path of the designated laser and is used to converge and deflect the designated laser before it is incident on the wavelength conversion device. The first cylindrical mirror includes a first incident surface and a first exit surface. The first incident surface is a convex curved surface used to converge the specified laser emitted from the fiber optic connector. The first exit surface is a plane and is inclined relative to the optical axis of the specified laser to change the propagation direction of the specified laser.
4. The vehicle headlight module according to claim 3, characterized in that, The first cylindrical mirror further includes a bonding surface, which is a plane and located between the first light-incident surface and the first light-outceasing surface, and is connected to the base.
5. The vehicle headlight module according to claim 1, characterized in that, The fiber optic connector has a second rotational position. In the second rotational position, the angle between the optical axis corresponding to the designated laser emitted from the fiber optic connector and the light-emitting surface of the wavelength conversion element is an acute angle.
6. The vehicle headlight module according to claim 5, characterized in that, The light guide includes a second cylindrical mirror, which is disposed in the optical path of the designated laser and is used to focus the designated laser before it is incident on the wavelength conversion device. The second cylindrical mirror includes a second incident surface and a second exit surface. The second incident surface is a convex curved surface used to converge the specified laser emitted from the fiber optic connector. The second exit surface is a plane and is perpendicular to the optical axis of the specified laser.
7. The vehicle headlight module according to any one of claims 1 to 6, characterized in that, The base includes a fixed part and a light-blocking part connected together, and the wavelength conversion element is disposed on the fixed part; The light-blocking part is located on the side of the fixing part facing the reflective cavity and protrudes relative to the fixing part; the light-blocking part is used to block the designated laser light reflected by the wavelength conversion element from being emitted to the light outlet.
8. The vehicle headlight module according to any one of claims 1 to 6, characterized in that, The headlight module also includes a focusing lens, which is disposed opposite to the light outlet and is used to converge the light emitted through the light outlet and transmit it to the outside. The base includes a reflective portion located between the light outlet and the condenser lens; wherein a portion of the light emitted through the light outlet is directly incident on the condenser lens; and another portion of the light emitted through the light outlet is reflected by the reflective portion and then incident on the condenser lens.
9. The vehicle headlight module according to any one of claims 1 to 6, characterized in that, The reflective assembly includes a reflector and a connector. The reflector is disposed on the base and together with the base defines the reflective cavity. The connector is movably connected to the reflector and is used to connect the optical fiber connector. The drive assembly is connected to the connector for driving and controlling the connector to rotate relative to the reflector, so as to adjust the angle at which the specified laser is incident on the wavelength conversion component.
10. The vehicle headlight module according to claim 9, characterized in that, The reflector has a guide portion on the side facing the connector, and the connector has a mating portion on the side facing the reflector. The guide portion and the mating portion are slidably nested together to allow the connector to rotate relative to the reflector.
11. A lighting system, characterized in that, include: case; A laser module includes a laser generator, an optical fiber, and an optical fiber connector, wherein the laser generator and the optical fiber connector are respectively connected to the two ends of the optical fiber; wherein the laser generator is disposed outside the housing and is used to generate a specified laser beam; and The vehicle lighting module as described in any one of claims 1 to 10, wherein the vehicle lighting module is connected to the fiber optic connector and located on the optical path of the designated laser; wherein the vehicle lighting module is disposed within the housing.