Light module and vehicle

Abstract

The utility model discloses a light module and a vehicle, in the light module, the light module comprises a laser light source, a coupling lens, an optical fiber, a fluorescent unit and a projection lens which are arranged in sequence; the laser light source is used for generating light, and the light is conducted to one end of the optical fiber through the coupling lens; the light is conducted to the fluorescent unit through the other end of the optical fiber, and the fluorescent unit is used for converting the light into mixed light; and the mixed light is projected through the projection lens. The light module provided by the utility model is high in luminous flux, high in brightness, good in heat dissipation effect, small in structural size and small in occupied space.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle accessories, and in particular to a lighting module and a vehicle. Background Art

[0002] In the lighting module provided by the related art, the mixed light generated by the light source has low luminous flux, low illumination, low brightness, and poor focusing effect of the mixed light. It is necessary to increase the light output aperture of the projection lens in order to project the mixed light. However, increasing the light output aperture of the projection lens will increase the structural size of the projection lens, which in turn increases the space occupied by the lighting module. Utility Model Content

[0003] The purpose of the present application is to provide a lighting module and a vehicle. In the lighting module provided in the present application, the luminous flux is high, the brightness is high, the heat dissipation effect is good, the structural size is small, and the space occupied is small.

[0004] In a first aspect, the present application provides a lighting module, which includes a laser light source, a coupling lens, an optical fiber, a fluorescent unit and a projection lens arranged in sequence; the laser light source is used to generate light, and the light is transmitted to one end of the optical fiber through the coupling lens; the light is transmitted to the fluorescent unit through the other end of the optical fiber, and the fluorescent unit is used to convert the light into mixed light; the mixed light is projected through the projection lens.

[0005] In some embodiments, the laser light source, the coupling lens, the optical fiber, and the fluorescent unit are all multiple; the multiple laser light sources, the multiple coupling lenses, the multiple optical fibers, and the multiple fluorescent units correspond to each other one by one.

[0006] In some embodiments, surfaces of the plurality of fluorescent units facing the projection lens are all located at the object focal plane of the projection lens.

[0007] In some embodiments, a plurality of the fluorescent units are arranged in an array.

[0008] In some embodiments, the plurality of fluorescent units are arranged in M ​​rows and N columns; wherein M is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2.

[0009] In some embodiments, the central optical axis of the projection lens is located on a first horizontal plane of the projection lens, and the first horizontal plane is parallel to the horizontal direction; at least a portion of the fluorescent units in the second row and the fluorescent units in the first row are located on one side of the first horizontal plane; along the horizontal direction, the first horizontal plane and the fluorescent units in the first row have a first spacing h, and the first spacing h satisfies the following condition: h=f*tan(0.57°), where f is the focal length of the projection lens.

[0010] In some embodiments, the central optical axis of the projection lens lies in a first vertical plane of the projection lens, and the first vertical plane is parallel to the vertical direction; along the vertical direction, a second spacing x exists between a side of the fluorescent unit facing away from the first vertical plane and the first vertical plane, and the second spacing x satisfies the following condition: x > f * tan(12°), where f is the focal length of the projection lens.

[0011] In some embodiments, the axis line of the optical fiber passes through the center of the fluorescent unit; along the axis line direction of the optical fiber, a first distance l exists between the optical fiber and the fluorescent unit, and the first distance l satisfies the following condition: D + 2 * l * tanα < S, where D is the fiber diameter of the optical fiber, α is the numerical aperture angle of the optical fiber, and S is the length of the fluorescent unit.

[0012] In some embodiments, the fluorescent unit includes a first surface, a second surface, and a side surface. The first surface and the second surface are arranged opposite to each other along the thickness direction of the fluorescent unit, and the side surface is connected between the first surface and the second surface; the first surface faces the optical fiber, the second surface faces the projection lens, and the side surface is covered with a light-shielding film.

[0013] In some embodiments, the projection lens includes at least three imaging lenses, and the imaging lenses are arranged in sequence from the object side to the image side.

[0014] In a second aspect of the present application, a vehicle is provided, and the vehicle includes the lighting module according to any one of the above embodiments.

[0015] The lighting module provided by the embodiments of the present application uses a laser light source. Compared with traditional light sources, the light generated by the laser light source has higher luminous flux, higher illuminance, and greater brightness, and has a better lighting effect. The light generated by the laser light source is coupled through a coupling lens, and the coupling lens can focus the above light, making the above light become compact and concentrated. The optical fiber is used to conduct light, and the optical fiber is a light guiding medium for conducting light. The combined use of the coupling lens and the optical fiber can combine the focusing function of the coupling lens and the conduction function of the optical fiber, efficiently focus and conduct the light generated by the laser light source, and a small-sized fluorescent unit can convert the above light into mixed light, so that a small-sized projection lens can project the above mixed light. In addition, the optical fiber can separate the photoelectricity, which is beneficial to the heat dissipation of the lighting module. Therefore, in the lighting module provided by the present application, the luminous flux is high, the brightness is large, the heat dissipation effect is good, the structural size is small, and the occupied space is small. Description of the Drawings

[0016] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation scheme are briefly introduced below.

[0017] Figure 1 It is a structural schematic diagram of a lighting module provided in one embodiment of the present application.

[0018] Figure 2 It is a structural schematic diagram of a lighting module provided in another embodiment of the present application.

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure of the optical fiber.

[0020] Figure 4 yes Figure 2 Schematic diagram of the structure of the optical fiber and fluorescent unit.

[0021] Figure 5 yes Figure 4 Schematic diagram of the structure of the fluorescent unit from another perspective.

[0022] Figure 6 yes Figure 2 Schematic diagram of the structure of the fluorescent unit and projection lens.

[0023] Figure 7 yes Figure 2 Schematic diagram of the structure of the fluorescent unit in .

[0024] Figure 8 yes Figure 2 Schematic diagram of the structure of the fluorescent unit in the object focal plane of the projection lens.

[0025] Fig. 9 yes Figure 8 Enlarged view of part IX.

[0026] Fig.10 It is a structural schematic diagram of a lighting module provided in another embodiment of the present application.

[0027] Description of reference numerals:

[0028] 100-lighting module; 10-laser light source; 20-coupling lens; 30-optical fiber; 31-core; 32-cladding; 33-coating layer; 301-first light spot; 40-fluorescent unit; 41-first surface; 42-second surface; 43-side; 50-projection lens; 501-object focal plane; 51-imaging lens; 502-second light spot; 60-sensor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more related listed items.

[0032] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0033] See also Figure 1 The embodiment of the present application provides a lighting module 100, which includes a laser light source 10, a coupling lens 20, an optical fiber 30, a fluorescent unit 40, and a projection lens 50 arranged in sequence. The laser light source 10 is used to generate light, which is transmitted to one end of the optical fiber 30 through the coupling lens 20, and the light is transmitted to the fluorescent unit 40 through the other end of the optical fiber. The fluorescent unit 40 is used to convert the light into mixed light, and the mixed light is projected through the projection lens 50.

[0034] In the lighting module provided by the related art, the mixed light generated by the light source has low luminous flux, low illumination, low brightness, and poor focusing effect of the mixed light. It is necessary to increase the light output aperture of the projection lens in order to project the mixed light. However, increasing the light output aperture of the projection lens will increase the structural size of the projection lens, which in turn increases the space occupied by the lighting module.

[0035] In the lighting module 100 provided in the embodiment of the present application, a laser light source 10 is used. Compared with a traditional light source, the light generated by the laser light source 10 has a higher luminous flux, a higher illuminance, and a greater brightness, thereby having a better lighting effect. In the embodiment of the present application, the laser light source 10 is a semiconductor laser diode, which emits blue light.

[0036] The light generated by the laser light source 10 is coupled through the coupling lens 20, and the coupling lens 20 can focus the light so that the light becomes compact and concentrated. The optical fiber 30 is used to transmit light, and the optical fiber 30 is a light-guiding medium for transmitting light. The use of the coupling lens 20 and the optical fiber 30 can combine the focusing function of the coupling lens 20 and the transmitting function of the optical fiber 30, and efficiently focus and transmit the light generated by the laser light source 10. The small-sized fluorescent unit 40 can convert the light into mixed light, so that the small-sized projection lens 50 can project the mixed light. In addition, the optical fiber 30 can separate the photoelectricity, which is beneficial to the heat dissipation of the lighting module 100. Therefore, in the lighting module 100 provided in the present application, the luminous flux is high, the brightness is large, the heat dissipation effect is good, the structural size is small, and the space occupied is small.

[0037] In some embodiments, the light generated by the laser light source 10 is transmitted to the fluorescent unit 40 through the coupling lens 20 and the optical fiber 30. The fluorescent unit 40 is used to convert the above light into mixed light, that is, the fluorescent unit 40 converts the blue light emitted by the semiconductor laser diode into mixed light. Exemplarily, part of the blue light emitted by the semiconductor laser diode is absorbed by the fluorescent unit 40 and emits yellow light; the unabsorbed blue light is scattered by the fluorescent unit 40 and mixed with the above yellow light to form mixed light. The above mixed light has high luminous flux, high illuminance and high brightness. The mixed light output by the fluorescent unit 40 is projected by the projection lens 50 to form a light spot with high luminous flux, high illuminance and high brightness.

[0038] In some embodiments, see Figure 2 , the laser light source 10, the coupling lens 20, the optical fiber 30 and the fluorescent unit 40 in the lighting module 100 are all multiple; the multiple laser light sources 10, the multiple coupling lenses 20, the multiple optical fibers 30 and the multiple fluorescent units 40 correspond to each other. Figure 2 In the embodiment, some components of the lighting module 100 are briefly processed. Specifically, Figure 2 1 shows a laser light source 10, a coupling lens 20, a row of optical fibers 30, four rows of fluorescent units 40 and a projection lens 50. In fact, the number of laser light sources 10, coupling lenses 20, optical fibers 30 and fluorescent units 40 is the same and corresponds one to one.

[0039] In the present application, there is no requirement for the arrangement of the laser light source 10, as long as the installation is stable and heat dissipation is convenient. The packaging of the laser light source 10 can be, but is not limited to, TO-Can packaging, C-Mount packaging, Butterfly packaging, Chip-On-Submount packaging or other packaging methods, and different packaging types are suitable for different application scenarios and requirements.

[0040] In the present application, the laser light source 10 , the coupling lens 20 and the optical fiber 30 can match each other so that when the light generated by the laser light source 10 is transmitted to the fluorescent unit 40 through the coupling lens 20 and the optical fiber 30 , the energy density of the light is high.

[0041] On the one hand, the light generated by the laser light source 10 is focused onto the end face of the optical fiber 30 facing the coupling lens 20 through the coupling lens 20. If the coupling lens 20 is too close to the laser light source 10, the coupling lens 20 cannot focus the light; if the coupling lens 20 is too far from the laser light source 10, the light is focused by the coupling lens 20, and the energy density and brightness of the light are low. The input light intensity at the input end of the optical fiber 30 can be maximized by adjusting the distance between the laser light source 10 and the coupling lens 20. On the other hand, the optical axes of the coupling lens 20 and the optical fiber 30 are aligned and maintained at a certain distance. When the light is incident from one side of the coupling lens 20, the coupling lens 20 will focus the light onto the focal point, and then the light will be refracted after passing through the focal point and finally enter the optical fiber 30. By adjusting the distance between the coupling lens 20 and the optical fiber 30, the focusing position of the light and the receiving efficiency of the optical fiber 30 can be controlled.

[0042] See also Figure 3 The optical fiber 30 includes a core 31, a cladding 32 and a coating 33. The core 31, the cladding 32 and the coating 33 are coaxially arranged, the cladding 32 is a tubular structure with an inner cavity, the core 31 is arranged in the inner cavity of the cladding 32, and the coating 33 covers the outer side of the cladding 32. The coating 33 can be one layer or multiple layers, which is not limited here.

[0043] The fiber core 31 and the cladding 32 are made of transparent materials. The fiber core 31 and the cladding 32 are the main light transmission channels. The above channels conduct and constrain the light to achieve light transmission. Since the fiber core 31 and the cladding 32 are fragile, have poor bending resistance and poor toughness. Providing the coating 33 can improve the bending performance of the optical fiber 30, and can improve the toughness of the optical fiber 30, and facilitate the arrangement of multiple optical fibers 30. In addition, providing the coating 33 can play a role in mechanical protection, prevent the wear of the fiber core 31 and the cladding 32, thereby extending the life of the optical fiber 30.

[0044] Combination Figure 2 , Figure 4 and Figure 5The fluorescent unit 40 includes a first surface 41, a second surface 42 and a side surface 43. The first surface 41 and the second surface 42 are arranged opposite to each other along the thickness direction of the fluorescent unit 40, and the side surface 43 is connected between the first surface 41 and the second surface 42. The first surface 41 faces the optical fiber 30, and the second surface 42 faces the projection lens 50. The side surface 43 of the fluorescent unit 40 is covered with a light-shielding film, which is made of a light-proof material. The light-shielding film is used for light shielding, and the light-shielding film can avoid light loss. In the present application, the thickness of the light-shielding film is less than 50 μm.

[0045] The fluorescent unit 40 is a regular polygonal structure, that is, the cross section of the fluorescent unit 40 along the direction perpendicular to its thickness is a regular polygon. In the embodiment of the present application, the cross section of the fluorescent unit 40 along the direction perpendicular to its thickness is a regular quadrilateral. In other embodiments, the cross section of the fluorescent unit 40 along the direction perpendicular to its thickness can also be a regular triangle, a regular pentagon, a regular hexagon, etc., which is not limited here.

[0046] In the positional relationship between the optical fiber 30 and the fluorescent unit 40, the axis of the optical fiber 30 is parallel to the thickness direction of the fluorescent unit 40, and the axis of the optical fiber 30 passes through the center of the fluorescent unit 40. Along the axis direction of the optical fiber 30, the optical fiber 30 and the fluorescent unit 40 have a first distance l, that is, the first distance l is the distance between the end face of the optical fiber 30 facing the fluorescent unit 40 and the first surface 41. The first distance l satisfies the following condition: D+2*l*tanα <S。

[0047] Wherein, the above D is the fiber diameter of the optical fiber 30, that is, the outer diameter of the coating layer 33. The above α is the fiber numerical aperture angle of the optical fiber 30. The fiber numerical aperture angle α of the optical fiber 30 is related to the fiber numerical aperture NA of the optical fiber 30. The fiber numerical aperture NA of the optical fiber 30 and the fiber numerical aperture angle α of the optical fiber 30 satisfy the following condition NA=sinα. The above S is the length of the fluorescent unit 40. The length direction of the fluorescent unit 40 is perpendicular to the axis direction of the optical fiber 30. In the present application, the cross section of the fluorescent unit 40 perpendicular to its thickness direction is a regular quadrilateral. The length of the fluorescent unit 40 refers to the side length of the first surface 41 or the second surface 42. In other embodiments, the length of the fluorescent unit 40 refers to the diameter of the inner diameter circle of the first surface 41 or the second surface 42.

[0048] The light outputted by the optical fiber 30 is transmitted to the first surface 41 of the fluorescent unit 40 to form a first light spot 301. The first distance l satisfies the above conditions, and can improve the brightness and illumination of the first light spot 301, thereby improving the brightness and illumination of the input light of the fluorescent unit 40.

[0049] In some embodiments, the maximum length of the light-emitting surface of the laser light source 10, the fiber diameter of the optical fiber 30 and the length of the fluorescent unit 40 match each other, so that the output light intensity at the output end of the optical fiber 30 is maximized. The above-mentioned light-emitting surface refers to the size of the surface area of ​​the laser light source 10 radiating light. The larger the light-emitting area, the more the luminous flux radiated by the laser light source 10 will be distributed in a wider area. The larger the light-emitting area of ​​the laser light source 10, the larger the structural size of the light module 100. In the present application, the length of the light-emitting surface of the laser light source 10 is less than or equal to 220μm, and the light-emitting surface of the above-mentioned laser light source 10 is in the shape of a long strip. The length of the above-mentioned light-emitting surface refers to the size of the light-emitting surface along its length direction.

[0050] Specifically, when the length of the light-emitting surface of the laser light source 10 is less than 105 μm, the core of the optical fiber 30 is 105 μm, and the minimum size of the first surface 41 or the second surface 42 of the fluorescent unit 40 is 105 μm*105 μm. When the length of the light-emitting surface of the laser light source 10 is greater than or equal to 105 μm and less than or equal to 220 μm, the core of the optical fiber 30 is 220 μm, and the minimum size of the first surface 41 or the second surface 42 of the fluorescent unit 40 is 220 μm*220 μm.

[0051] In some embodiments, see Figure 6 , the surfaces of the plurality of fluorescent units 40 facing the projection lens 50 are all located at the object focal plane 501 of the projection lens 50. This arrangement can improve the brightness and illumination of the mixed light input to the projection lens 50.

[0052] The object focal plane 501 is a virtual plane, which passes through the object focus of the projection lens 50, and is perpendicular to the central optical axis of the projection lens 50. The central optical axis of the projection lens 50 refers to a virtual line in the optical system that passes through the optical center of the projection lens 50 and is perpendicular to the surface of the projection lens 50.

[0053] In some embodiments, see Figure 6 and Figure 7 , multiple fluorescent units 40 are arranged in an array. The above array arrangement means that multiple fluorescent units 40 are regularly distributed in the object focal plane 501 of the projection lens 50. In this way, the mixed light output by the fluorescent unit 40 is projected through the projection lens 50 to form a regular light spot.

[0054] Specifically, a plurality of fluorescent units 40 are arranged in M ​​rows and N columns, wherein the aforementioned M is a positive integer greater than or equal to 2, and the aforementioned N is a positive integer greater than or equal to 2. Among them, the fluorescent units 40 in the same row are arranged in sequence in the horizontal direction, and the multiple rows of fluorescent units 40 are arranged in sequence from top to bottom, with the top row being the first row and the second top row being the second row. The fluorescent units 40 in the same column are arranged in sequence in the vertical direction, and the multiple columns of fluorescent units 40 are arranged in sequence from left to right, with the leftmost column being the first column and the second leftmost column being the second column. The number of fluorescent units 40 in each row may be the same or different. The number of fluorescent units 40 in each column may be the same or different, and is not limited here. The "multiple rows", "multiple columns" or "multiple" mentioned herein means that the number is two or more.

[0055] In this embodiment, the plurality of fluorescent units 40 are arranged in 4 rows and 26 columns, and the number of fluorescent units 40 from the first row to the fourth row is 20, 20, 26, and 26, respectively. In other embodiments, the plurality of fluorescent units 40 are arranged in 2 rows and 14 columns, and the number of fluorescent units 40 from the first row to the second row is 14 and 12, respectively. In other embodiments, the plurality of fluorescent units 40 are arranged in 5 rows and 26 columns, and the number of fluorescent units 40 from the first row to the fifth row is 26, 26, 24, 20, and 12, respectively.

[0056] In this embodiment, the plurality of fluorescent units 40 may also be arranged in a "convex" shape. In other embodiments, the plurality of fluorescent units 40 may also be arranged in a rectangular shape, in a "cross" shape, or in a trapezoidal shape, which is not limited here. The plurality of fluorescent units 40 may be arranged symmetrically or asymmetrically, which is not limited here.

[0057] See also Figures 7 to 9 In the positional relationship between the plurality of fluorescent units 40 and the central optical axis of the projection lens 50, the central optical axis of the projection lens 50 is located at a first horizontal plane of the projection lens 50, and the first horizontal plane of the projection lens 50 is parallel to the horizontal direction. Figure 8 In FIG. 5 , the orthographic projection of the first horizontal plane on a plane perpendicular to the central optical axis of the projection lens 50 is the HH line.

[0058] At least a portion of the second row of fluorescent units 40 and the first row of fluorescent units 40 are both located on one side of the first horizontal plane of the projection lens 50;

[0059] Along the horizontal direction, the first horizontal plane of the projection lens 50 and the first row of fluorescent units 40 have a first spacing h, that is, the first spacing h is the spacing between the side of the first row of fluorescent units 40 facing the first horizontal plane and the first horizontal plane of the projection lens 50, and the first spacing h satisfies the following condition: h=f*tan(0.57°), wherein the above f is the focal length of the projection lens 50.

[0060] In this embodiment, at least a portion of the second row of fluorescent units 40 and the first row of fluorescent units 40 are both located above the first horizontal plane of the projection lens 50. In other embodiments, at least a portion of the second row of fluorescent units 40 and the first row of fluorescent units 40 are both located below the first horizontal plane of the projection lens 50.

[0061] The first spacing h satisfies the above conditions, and the mixed light output by the fluorescent unit 40 is projected through the projection lens 50 to form a matrix light spot that meets the relevant standards. Furthermore, the lighting module 100 complies with the installation regulations of automotive lighting devices, and the lighting module 100 can be applied to vehicles.

[0062] See also Figures 7 to 9 In the positional relationship of the plurality of fluorescent units 40 relative to the central optical axis of the projection lens 50, the central optical axis of the projection lens 50 is located on the first vertical plane of the projection lens 50, and the first vertical plane of the projection lens 50 is parallel to the vertical direction. Figure 8 In the figure, the orthographic projection of the first vertical surface of the projection lens 50 on the plane perpendicular to the central optical axis of the projection lens 50 is the VV line.

[0063] In the vertical direction, the side of the fluorescent unit 40 facing away from the first vertical surface of the projection lens 50 has a second distance x from the first vertical surface of the projection lens 50 , and the second distance x satisfies the following condition: x>f*tan(12°), wherein the above f is the focal length of the projection lens 50 .

[0064] The side of each fluorescent unit 40 facing away from the first vertical surface of the projection lens 50 has a second spacing x with the first vertical surface of the projection lens 50, and each second spacing x satisfies the above conditions. In other words, in the horizontal direction, the plurality of fluorescent units 40 include one or more first fluorescent units, and the side of the first fluorescent unit facing away from the first vertical surface of the projection lens 50 has the largest spacing with the first vertical surface of the projection lens 50. The second spacing x can also be considered as the spacing between the side of the first fluorescent unit facing away from the first vertical surface of the projection lens 50 and the first vertical surface of the projection lens 50.

[0065] The second spacing x satisfies the above conditions, and the mixed light output by the fluorescent unit 40 is projected through the projection lens 50 to form a matrix light spot that meets the relevant standards. Furthermore, the lighting module 100 meets the installation regulations of automotive lighting devices, and the lighting module 100 can be applied to vehicles.

[0066] See also Figure 2 and Fig. 9 The projection lens 50 may be a conventional imaging lens module, a Fresnel lens module, or other forms of lens modules. The purpose of the projection lens 50 is to project the mixed light output by the fluorescent unit 40 to form a light spot. The projection lens 50 includes at least three imaging lenses 51, which are arranged in sequence from the object side to the image side.

[0067] The direction from the object side to the image side is the direction of the incident light path of the light. The three imaging lenses 51 are respectively the first lens, the second lens and the third lens along the direction of the incident light path. The mixed light output by the fluorescent unit is incident, and is output to form a second light spot 502 through the converging effect of the first lens, the diverging effect of the second lens, and the focusing effect of the third lens.

[0068] The projection lens 50 of this embodiment can ensure a large amount of light, ensure high light extraction efficiency, and improve the utilization rate of mixed light. In this embodiment, the light extraction efficiency of the projection lens 50 is 50%, and the light extraction efficiency of the projection lens 50 refers to the ratio of the output light flux of the projection lens 50 to the input light flux of the projection lens 50.

[0069] In some embodiments, the lighting module 100 further includes a sensor 60, which is used to sense the state of the fluorescent unit 40. When the fluorescent unit 40 is damaged, the sensor 60 can sense the damage and disconnect the power supply of the laser light source 10, and the laser light source 10 is turned off, thereby avoiding laser safety accidents.

[0070] In some embodiments, see Fig.10 Each laser light source 10 can be controlled individually, and some or all of the laser light sources 10 can be turned off. The turned-off laser light sources 10 can form a shadow in the corresponding area of ​​the second light spot 502.

[0071] An embodiment of the present application further provides a vehicle, the vehicle comprising the lighting module 100 described in any one of the above embodiments, and the lighting module 100 is installed on the vehicle.

[0072] The vehicle includes an acquisition unit and a processing unit. The acquisition unit is used to acquire information in front of the vehicle, and the acquisition unit can be one or more of a vehicle-mounted camera, a laser radar or other sensors. The acquisition unit can acquire information about pedestrians or vehicles in front of the vehicle. The processing unit is used to control the opening or closing of the laser light source 10. The processing unit can turn off part or all of the laser light sources 10, and the turned-off laser light sources 10 can form a shadow in the corresponding area of ​​the second light spot 502 to avoid dazzling pedestrians or vehicle personnel in front and reduce the occurrence of safety accidents.

[0073] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea.

Claims

1. A lighting module, characterized in that: The lighting module includes a laser light source, a coupling lens, an optical fiber, a fluorescent unit, and a projection lens arranged in sequence; The laser light source is used to generate light, and the light is conducted to one end of the optical fiber through the coupling lens; the light is conducted to the fluorescent unit through the other end of the optical fiber, and the fluorescent unit is used to convert the light into mixed light; the mixed light is projected through the projection lens.

2. The lighting module according to claim 1, characterized in that: The laser light source, the coupling lens, the optical fiber, and the fluorescent unit are all multiple; the multiple laser light sources, the multiple coupling lenses, the multiple optical fibers, and the multiple fluorescent units correspond one by one.

3. The lighting module according to claim 2, characterized in that: The surfaces of the multiple fluorescent units facing the projection lens are all located on the object-side focal plane of the projection lens.

4. The lighting module according to claim 3, characterized in that: The multiple fluorescent units are arranged in an array.

5. The lighting module according to claim 4, characterized in that: The multiple fluorescent units are arranged in M rows and N columns; where M is a positive integer greater than or equal to 2, and N is a positive integer greater than or equal to 2.

6. The lighting module according to claim 5, characterized in that: The central optical axis of the projection lens is located in the first horizontal plane of the projection lens, and the first horizontal plane is parallel to the horizontal direction; at least a part of the fluorescent units in the second row and the fluorescent units in the first row are both located on one side of the first horizontal plane; Along the horizontal direction, the first horizontal plane and the fluorescent units in the first row have a first distance h, and the first distance h satisfies the following condition: h = f * tan(0.57°), where f is the focal length of the projection lens.

7. The lighting module according to claim 5, characterized in that: The central optical axis of the projection lens is located in the first vertical plane of the projection lens, and the first vertical plane is parallel to the vertical direction; Along the vertical direction, the side of the fluorescent unit背离 the first vertical plane and the first vertical plane have a second distance x, and the second distance x satisfies the following condition: x > f * tan(12°), where f is the focal length of the projection lens.

8. The lighting module according to claim 1 or 2, characterized in that: The axis line of the optical fiber passes through the center of the fluorescent unit; along the axis line direction of the optical fiber, the optical fiber and the fluorescent unit have a first distance l, and the first distance l satisfies the following condition: D + 2 * l * tanα < S, where D is the fiber diameter of the optical fiber, α is the fiber numerical aperture angle of the optical fiber, and S is the length of the fluorescent unit.

9. The lighting module according to claim 1 or 2, characterized in that: The fluorescent unit includes a first surface, a second surface, and a side surface. The first surface and the second surface are arranged opposite to each other along the thickness direction of the fluorescent unit, and the side surface is connected between the first surface and the second surface; the first surface faces the optical fiber, the second surface faces the projection lens, and the side surface is covered with a light-shielding film.

10. The lighting module according to claim 1 or 2, characterized in that: The projection lens includes at least three imaging lenses, and the imaging lenses are arranged in sequence from the object side to the image side direction.

11. A vehicle, characterized in that: The vehicle includes the lighting module according to any one of claims 1 to 10.

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