Vehicle headlamp control method and device, vehicle and computer readable storage medium

Abstract

The invention discloses a control method and device of a vehicle headlamp, a vehicle and a computer readable storage medium, the vehicle headlamp comprises an illumination module used for illumination and a projection module used for projection, and the control method of the vehicle headlamp comprises the steps that when the vehicle runs, the width of a vehicle body is obtained; and based on the vehicle body width, controlling the projection module to project a projection image with the same width as the vehicle body width in front of the running vehicle so as to indicate whether the vehicle can smoothly pass through the current road section. The trafficability of the vehicle can be judged by observing the projection image projected on the ground, and a driver is helped to be prevented from driving on a road section which is not suitable for passing, so that the accident risk caused by misjudgment is reduced; meanwhile, by means of the control method of the vehicle headlight, the problem that a traditional headlight is poor in lighting effect at night or under the condition of poor sight is solved, more visual and accurate visual assistance is provided for a driver, and the overall science and technology feeling and the intelligent feeling of the vehicle can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a method, device, vehicle, and computer-readable storage medium for controlling vehicle headlights. Background Technology

[0002] In the modern traffic environment, vehicle driving safety is receiving increasing attention from all sectors of society. Especially when driving at night, drivers may encounter situations such as scrapes, collisions, or even impassable roads when driving on narrow sections of road, such as alleys, bridge width-restricted areas, and mountain road curves. This not only affects driving safety but may also cause property damage.

[0003] In existing technologies, traditional driving assistance methods mainly rely on the driver's visual judgment and experience. However, this reliance is particularly vulnerable when there is insufficient light, obstructed vision, or the driver underestimates the width of the road. Especially at night or in bad weather, when visibility is limited, it becomes more difficult for the driver to accurately judge the width of narrow road sections, which greatly increases the driving risk. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the object of the present invention is to provide a method, device, vehicle, and storage medium for controlling vehicle headlights.

[0005] The present invention proposes a method for controlling vehicle headlights, wherein the vehicle headlights include a lighting module for illumination and a projection module for projection. The method for controlling vehicle headlights includes: acquiring the vehicle body width while the vehicle is in motion; and, based on the vehicle body width, controlling the projection module to project a projection image with the same width as the vehicle body in front of the vehicle to indicate whether the vehicle can pass through the current road segment smoothly.

[0006] According to the vehicle headlight control method of the present invention, during vehicle operation, the projection module can project a projection image with the same width as the vehicle body in front of the vehicle based on the vehicle body width, thereby determining the vehicle's passability and helping the driver avoid risky driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0007] In addition, the vehicle headlight control method according to embodiments of the present invention may also have the following additional technical features:

[0008] Furthermore, the projected image includes a projected beam of light along the vehicle's direction of travel.

[0009] Furthermore, the projection beam is a monochromatic projection beam.

[0010] Furthermore, the monochromatic projection beam is a white projection beam.

[0011] Furthermore, the projected image includes two parallel projected lines, and the width between the two projected lines is the same as the width of the vehicle body.

[0012] Furthermore, the method for controlling vehicle headlights also includes: if the width of the projected image is less than or equal to the width of the current road segment, and the projected image does not exceed any edge line of the current road segment, then outputting a prompt message indicating that the vehicle can pass through the current road segment smoothly.

[0013] Furthermore, the method for controlling vehicle headlights also includes: if the width of the projected image is greater than the width of the current road segment, and / or the projected image exceeds any edge line of the current road segment, then outputting a prompt message indicating that the vehicle cannot pass through the current road segment smoothly.

[0014] To address the aforementioned problems, the present invention also proposes a vehicle headlight control device. The vehicle headlight includes a lighting module for illumination and a projection module for projection. The vehicle headlight control device includes: an acquisition module for acquiring the vehicle body width when the vehicle is in motion; and a control module for controlling the projection module to project a projection image with the same width as the vehicle body in front of the vehicle based on the vehicle body width, so as to indicate whether the vehicle can pass through the current road segment smoothly.

[0015] According to the vehicle headlight control device of the present invention, the vehicle headlight control method of the above embodiments of the present invention is implemented. During vehicle driving, the projection module can project a projection image with the same width as the vehicle body in front of the vehicle based on the vehicle body width, thereby judging the vehicle's passability and helping the driver avoid driving on unsuitable road sections, thereby reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to improve the overall technological and intelligent feel of the vehicle.

[0016] To address the aforementioned problems, the present invention also proposes a vehicle comprising: a vehicle headlight control device as described in the second aspect embodiment of the present invention; or, the vehicle comprising: a processor, a memory, and a vehicle headlight control program stored in the memory and executable on the processor, wherein the vehicle headlight control program, when executed by the processor, implements the vehicle headlight control method as described in the first aspect embodiment of the present invention.

[0017] According to an embodiment of the present invention, the vehicle headlight control method of the above embodiment of the present invention is implemented. During the vehicle's operation, the projection module can project a projection image with the same width as the vehicle body in front of the vehicle based on the vehicle body width, thereby determining the vehicle's passability and helping the driver avoid driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0018] To address the aforementioned problems, the present invention also proposes a computer-readable storage medium storing a vehicle headlight control program, wherein the vehicle headlight control program, when executed by a processor, implements the vehicle headlight control method as described in the first aspect embodiment of the present invention.

[0019] According to an embodiment of the present invention, when a computer-readable storage medium storing a vehicle headlight control program thereon is executed by a processor, it implements the vehicle headlight control method of the above-described embodiment of the present invention. During vehicle operation, the projection module can be controlled to project a projection image with the same width as the vehicle body in front of the vehicle, thereby determining the vehicle's passability and helping the driver avoid driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a headlight provided in an embodiment of the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of a vehicle headlight (with the lens assembly removed) according to an embodiment of the present invention;

[0024] Figure 3 for Figure 2A schematic diagram of the exploded structure of the car's headlights;

[0025] Figure 4 This is a schematic diagram of the structure of a thermally conductive pad provided in an embodiment of the present invention;

[0026] Figure 5 for Figure 1 Rear view of the central headlight (some heat dissipation components are omitted, only one heat dissipation copper pipe is shown);

[0027] Figure 6 This is a schematic diagram of the structure of the heat dissipation fins and heat dissipation copper pipes provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of a heat dissipation copper pipe provided in an embodiment of the present invention;

[0029] Figure 8 for Figure 7 A schematic diagram of the heat dissipation copper pipe from another perspective;

[0030] Figure 9 This is a schematic diagram of the structure of a heat dissipation fin provided in an embodiment of the present invention;

[0031] Figure 10 This is an assembly diagram of a heat dissipation component (with thermal pads removed) provided in an embodiment of the present invention;

[0032] Figure 11 for Figure 10 An exploded view of the heat dissipation components;

[0033] Figure 12 This is a schematic diagram of the structure of a fan housing provided in an embodiment of the present invention;

[0034] Figure 13 for Figure 12 A schematic diagram of the fan casing from another perspective;

[0035] Figure 14 This is a schematic diagram of the assembly structure of a lens assembly and a circuit board provided in an embodiment of the present invention;

[0036] Figure 15 for Figure 14 An exploded view of the lens assembly and circuit board.

[0037] Figure 16 This is a schematic diagram of a support structure provided in an embodiment of the present invention;

[0038] Figure 17 for Figure 16 A schematic diagram of the support structure from another perspective;

[0039] Figure 18This is a schematic diagram of a lens structure provided in an embodiment of the present invention;

[0040] Figure 19 A schematic diagram of the lens structure provided in one embodiment of the present invention from another perspective;

[0041] Figure 20 This is a schematic diagram of the structure of a lens provided in an embodiment of the present invention;

[0042] Figure 21 Astigmatism curve and distortion curve of a lens structure provided in an embodiment of the present invention;

[0043] Figure 22 This is a front view schematic diagram of a lens structure and a light source module provided in an embodiment of the present invention;

[0044] Figure 23 This is a left-side view of the lens structure and light source module provided in an embodiment of the present invention;

[0045] Figure 24 This is a top view of the lens structure and light source module provided in an embodiment of the present invention;

[0046] Figure 25 This is a schematic diagram showing the relationship between the emission field of view and the first optical axis of a light source module provided in an embodiment of the present invention;

[0047] Figure 26 A schematic diagram of a light source module provided in an embodiment of the present invention;

[0048] Figure 27 This is a schematic diagram of the grouping of a light source module according to an embodiment of the present invention;

[0049] Figure 28 This is a schematic diagram of the grouping of the light source module provided in another embodiment of the present invention;

[0050] Figure 29 This is a schematic diagram of the structure of a heat insulation sheet and lens assembly provided in an embodiment of the present invention;

[0051] Figure 30 This is a schematic diagram of the structure of a heat insulation sheet provided in an embodiment of the present invention;

[0052] Figure 31 for Figure 30 A schematic diagram of the structure of the heat insulation sheet from another perspective;

[0053] Figure 32 This is a schematic diagram of the lens structure and heat insulation sheet provided in an embodiment of the present invention;

[0054] Figure 33 This is a flowchart of a vehicle headlight control method according to an embodiment of the present invention;

[0055] Figure 34 This is a structural block diagram of a vehicle headlight control device according to an embodiment of the present invention.

[0056] Figure label:

[0057] 10-Headlight; 100-Lens assembly; 101-Lens; 102-First optical axis; L1-First lens; L2-Second lens; L3-Third lens; L4-Fourth lens; 110-Lens structure; 111-First positioning component; 112-Second positioning component; 113-Limiting component; 114-Lens barrel; 115-Second connecting component; 116-Limiting component; 120-Bracket structure; 121-Base; 1211-Housing part; 1212-Light transmission opening; 1213-Weight reduction cavity; 1214-Firming plate part; 1215-Containment 122-First connector; 1221-Connecting groove; 123-Sealing element; 200-Light source module; 201-Light-emitting device; 210-First device group; 220-Second device group; 230-First part; 240-Second part; 300-Circuit board; 311-Mounting hole; 320-Heat sink; 400 Heat dissipation assembly; 401-Mounting plate; 4001-First heat conduction hole; 4002-Connecting post; 410-Copper heat dissipation pipe; 411-Heat absorption pipe section; 412-Heat dissipation pipe section; 413-Connecting pipe section; 42 0-Heat dissipation fins; 421-Through hole; 422-Protrusion; 430-Thermal pad; 431-Second thermal hole; 432-First clearance notch; 433-Clearing hole; 440-Cooling fan; 441-Air inlet; 442-Air outlet; 443-Snap-fit ​​slot; 444-Wire harness; 450-Fan housing; 4501-Recess; 451-Airflow guide; 4511-Bend; 4512-Vertical section; 452-Mounting notch; 4521-Claw; 453-Extension plate; 4531-Second clearance notch; 454- Wiring notch; 4541 - Wiring clamp; 455 - Baffle; 4551 - Connecting hole; 456 - Guide plate; 457 - First protrusion; 458 - Second protrusion; 600 - Heat insulation sheet; 610 - Main body; 611 - Light transmission hole; 612 - Positioning edge; 6121 - First section; 6122 - Second section; 613 - Connecting groove; 620 - Connecting part; 630 - Positioning part; 631 - Positioning hole; 640 - Weight reduction opening; 700 - Transmission field of view; 701 - Center line; 702 - First sub-field of view; 703 - Second sub-field of view;

[0058] 1000 - Control device for vehicle headlights; 1001 - Acquisition module; 1002 - Control module. Detailed Implementation

[0059] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0060] The following is for reference. Figures 1-34 A method, apparatus, vehicle, and storage medium for controlling vehicle headlights according to embodiments of the present invention are described.

[0061] First, combined Figure 1-32 The structure of the vehicle headlights involved in the embodiments of the present invention is described.

[0062] With the development of vehicle technology, the functions of vehicle headlights have become more diverse. One type of headlight in this technology can not only provide illumination but also project static patterns or dynamic images onto the road surface in front of the vehicle.

[0063] To achieve optimal projection performance, the headlight power needs to be kept at a high level. However, in related technologies, the headlight light source module is usually integrated on a circuit board. The high heat energy generated by the light source module can easily damage the components on the circuit board, thereby reducing the lifespan of the headlight.

[0064] To address the aforementioned problems, embodiments of the present invention provide a headlight 10 and a vehicle having the headlight 10. See also... Figure 1 , Figure 2 and Figure 3 The headlight 10 includes a circuit board 300, a light source module 200, a lens assembly 100, and a heat dissipation assembly 400. The light source module 200 is located on one side of the circuit board 300 and has an illumination mode and a projection mode. In projection mode, the light source module 200 can project a pattern. The lens assembly 100 is located on the light-emitting side of the light source module 200 to receive and emit the light emitted from the light source module 200. The heat dissipation assembly 400 includes at least one heat dissipation copper pipe 410 and a thermal pad 430. The thermal pad 430 is located on the surface of the circuit board 300 facing away from the light source module 200, and the heat dissipation copper pipe 410 is located on the side of the thermal pad 430 facing away from the circuit board 300 and is in contact with the thermal pad 430. The thermal pad 430 has a second thermal hole 431, which is opposite to the light source module 200. At least one heat dissipation copper pipe 410 dissipates heat from the light source module 200 through the second thermal hole 431.

[0065] In this invention, headlight 10 refers to a vehicle's lighting fixture. Automobiles have many types of lighting fixtures, including headlights, taillights, turn signals, brake lights, projector lights, etc. Among them, headlights are the most important lighting device on a vehicle; their function is to illuminate the road and objects in front of the vehicle at night, ensuring driving safety. Headlights can emit alternating high and low beam light signals to facilitate overtaking at night and avoid dazzling oncoming drivers. The headlight 10 provided in this embodiment of the invention is not limited to headlights; it can also be taillights, projector lights, or other lighting fixtures.

[0066] The light source module 200 is mounted on the circuit board 300 as the light source for the headlight 10. The light source module 200 may include multiple micron-sized light-emitting points, each of which can be independently controlled. For example, a single light-emitting point can be controlled to emit light or not, or its luminous intensity can be changed. The control method for the light-emitting points is existing and can be achieved through a control circuit composed of thin-film transistors (TFTs), which will not be elaborated upon in this invention. The light source module 200 has an illumination mode and a projection mode. The luminous emission mode of the light-emitting points can be adjusted according to different operating modes. For example, in illumination mode, all light-emitting points can be controlled to emit white light to maximize illumination brightness. In projection mode, some light-emitting points can be controlled to emit light, thus projecting a specific pattern. It is understood that if the light-emitting points in each light source module 200 consist of red, green, and blue light-emitting points, then various colors of light can be modulated through color combinations, and dynamic images can be projected using existing display technology. Optionally, refer to… Figure 26 The light source module 200 includes multiple light-emitting devices 201 arranged in an array. The light-emitting devices 201 are Mini LEDs or Micro LEDs. Among them, Mini LEDs are light-emitting devices 201 with a size in the tens of micrometers range, and Micro LEDs are light-emitting devices 201 with a size in the less than ten micrometers range.

[0067] The lens assembly 100 is a lens assembly with a light-converging effect. The lens assembly 100 is located on the light-emitting side of the light source module 200, which helps to improve the clarity of the projection.

[0068] The heat dissipation assembly 400 is used to dissipate heat from the structure inside the headlight 10. Specifically, the heat dissipation assembly 400 includes at least one heat dissipation copper pipe 410 and a thermally conductive pad 430. At least one heat dissipation copper pipe 410 means that there can be two, three, four, etc., heat dissipation copper pipes. The thermally conductive pad 430 is located between the circuit board 300 and the heat dissipation copper pipe 410, and the thermally conductive pad 430 can improve the heat transfer efficiency between the circuit board 300 and the heat dissipation copper pipe 410.

[0069] The solution provided by this invention involves a thermally conductive pad 430 disposed on the surface of the circuit board 300 facing away from the light source module 200. This allows heat transferred from the light source module 200 to the circuit board 300 to the heat dissipation copper pipe 410 via the thermally conductive pad 430, and then dissipated to the outside. Furthermore, the thermally conductive pad 430 is provided with a second thermally conductive hole 431 opposite to the light source module 200. This allows the heat dissipation copper pipe 410 to directly dissipate heat generated by the light source module 200 via the second thermally conductive hole 431. Thus, on the one hand, the heat dissipation copper pipe 410 can indirectly dissipate heat transferred from the light source module 200 to the circuit board 300 via the thermally conductive pad 430; on the other hand, the heat dissipation copper pipe 410 can directly dissipate heat generated by the light source module 200 via the second thermally conductive hole 431 on the thermally conductive pad 430. Therefore, this solution effectively dissipates the high heat energy of the light source module 200 of the headlight 10, reducing the probability of damage to components on the light source module 200 and circuit board 300, and improving the service life of the headlight 10.

[0070] See Figure 2 and Figure 3 , Figure 3 yes Figure 2 The exploded structural diagram shows that in some embodiments, the circuit board 300 has mounting holes 311, which are positioned opposite to the light source module 200. The heat dissipation assembly 400 also includes a heat sink 320, one side of which contacts the light source module 200 through the mounting hole 311, and the other side of which contacts at least one heat dissipation copper pipe 410 through a second heat conduction hole 431.

[0071] The shape of the heat sink 320 is similar to the shape of the mounting hole 311, and the heat sink 320 can be embedded within the mounting hole 311, for example. For example, as... Figure 2 As shown, the mounting hole 311 is rectangular, and the heat sink 320 can be a rectangular copper block, aluminum block, etc. The heat sink 320 can conduct the heat from the light source module 200 to the heat dissipation copper pipe 410.

[0072] To further improve the heat dissipation effect and heat conduction speed of the light source module 200, in some embodiments, a phase change thermally conductive material can be coated between the heat sink 320 and the light source module 200, and / or between the heat sink 320 and the heat dissipation copper pipe 410. This reduces the air gap between the heat sink 320 and the light source module 200 and the heat dissipation copper pipe 410, increases the effective contact area, establishes an effective heat conduction channel, reduces contact thermal resistance, and allows the heat dissipation performance of the heat dissipation component 400 to be fully utilized. The phase change thermally conductive material has a thermal conductivity ≥6W / mK and a thickness ≤0.1mm. Various suitable phase change thermally conductive adhesives can be used. There are many types of phase change thermally conductive adhesives available, and designers can choose flexibly according to actual needs.

[0073] Please see Figure 3 In some embodiments, the heat dissipation assembly 400 further includes a mounting plate 401 located between the heat sink 410 and the thermal pad 430. The mounting plate 401 provides support for the circuit board 300 and the heat sink 410. Figure 3 As shown, the mounting plate 401 also has a first heat-conducting hole 4001, which serves as a channel to guide the heat generated by the light source module 200 to the heat dissipation copper pipe 410. The first heat-conducting hole 4001 can be polygonal, circular, elliptical, etc., and the present invention does not specifically limit it.

[0074] Please see Figures 3 to 5 The shape of the second heat-conducting hole 431 is similar to that of the first heat-conducting hole 4001, and the second heat-conducting hole 431 can be quadrilateral. In addition, in order to avoid various electrical components on the circuit board 300, such as capacitors, inductors, chips, etc., in some embodiments, the heat-conducting pad 430 may also be provided with a first clearance notch 432 and / or clearance hole 433.

[0075] Furthermore, the orthographic projection of the second heat-conducting hole 431 on the mounting plate 401 is located within the first heat-conducting hole 4001. That is, the size of the second heat-conducting hole 431 is smaller than the size of the first heat-conducting hole 4001. This allows part of the thermal pad 430 to be exposed on the mounting plate 401. Therefore, the thermal pad 430 can directly contact the heat dissipation copper pipe 410 through the first heat-conducting hole 4001, thereby allowing the heat dissipation copper pipe 410 to dissipate the heat of the circuit board 300 collected by the thermal pad 430.

[0076] The structure of the heat dissipation copper pipe 410 can be varied; for example, see [link to example]. Figure 3 , Figure 6 and Figure 7 In some embodiments, the heat dissipation copper pipe 410 may include a heat-absorbing pipe section 411, a heat-dissipating pipe section 412, and a connecting pipe section 413. The heat-absorbing pipe section 411 has a first contact surface that is in contact with the thermally conductive pad 430. The heat-dissipating pipe section 412 is spaced apart from the heat-absorbing pipe section 411. The two ends of the connecting pipe section 413 are respectively connected to the heat-absorbing pipe section 411 and the heat-dissipating pipe section 412. The heat generated by the light source module 200 can be discharged from the headlight 10 in sequence through the heat-absorbing pipe section 411, the connecting pipe section 413, and the heat-dissipating pipe section 412.

[0077] Since the size of the second heat-conducting hole 431 is smaller than that of the first heat-conducting hole 4001, a part of the structure of the heat-conducting gasket 430 will not be blocked by the mounting plate 401. The heat-conducting gasket 430 can directly contact the first contact surface of the heat-absorbing pipe section 411 of the heat-dissipating copper pipe 410 corresponding to the first heat-conducting hole 4001. Then, the heat on the circuit board 300 absorbed by the heat-conducting gasket 430 is导出大灯10,有效降低电路板300的热量。

[0078] It should be noted that, in order to further improve the heat dissipation effect, in some embodiments, microchannels can be formed on the inner wall of the heat-dissipating copper pipe 410, and the inside of the heat-dissipating copper pipe 410 is in a negative pressure environment and filled with a coolant. Among them, the coolant can be pure water, or a special coolant such as alcohol-based or glycerin-based. The negative pressure state inside the heat-dissipating copper pipe 410 can reduce the boiling point of the coolant inside the heat-dissipating copper pipe 410.

[0079] With such a setting, when the heat generated by the headlight 10 is transferred to the heat-absorbing pipe section 411 of the heat-dissipating copper pipe 410, the coolant in the heat-absorbing pipe section 411 under the negative pressure environment is heated and evaporated, and flows from the heat-absorbing pipe section 411 through the connecting pipe section 413 to the heat-dissipating pipe section 412. The temperature of the heat-dissipating pipe section 412 is lower than that of the heat-absorbing pipe section 411. The gaseous coolant condenses when it meets the heat-dissipating pipe section 412 and导出大灯10。随后,散热管段412内的冷却液在散热铜管410内壁微流道的毛细作用下,能够逐渐从散热管段412回流至吸热管段411。具体而言,由于散热铜管410内壁具有许多细小的微流道,冷却液吸附在这些细小的微流道内,并且在冷却液表面张力、内聚力与附着力的共同作用下,能够逐渐从散热管段412回流至吸热管段411。因此冷却液可以在吸热管段411和散热管段412往复循环,从而不断地将大灯10产生的热量从吸热管段411传递至散热管段412并散发至大灯10外。可见,通过本方案能够进一步提高大灯10的散热效果。

[0080] It can be understood that the structure of the heat-dissipating copper pipe 410 can be various. In one possible implementation, the heat-dissipating copper pipe 410 can be bent twice to form a structure similar to a "匚" shape. In addition, the heat-absorbing pipe section 411 and the heat-dissipating pipe section 412 of the heat-dissipating copper pipe 410 can be arranged in a staggered manner. For example, see Figure 6 和 Figure 7 It should be noted that the content of "导出大灯10,有效降低电路板300的热量。" and "导出大灯10。随后,散热管段412内的冷却液在散热铜管410内壁微流道的毛细作用下,能够逐渐从散热管段412回流至吸热管段411。" in the original text seems to be incomplete or incorrect in expression. I have translated it as accurately as possible based on the existing context. If there are any specific corrections or clarifications needed for these parts, please let me know.In some embodiments, in the vertical direction, the heat-absorbing pipe section 411 can be positioned higher or lower than the heat-dissipating pipe section 412. Specifically, the connecting pipe section 413 connecting the heat-absorbing pipe section 411 and the heat-dissipating pipe section 412 can be positioned at an angle to both the heat-absorbing pipe section 411 and the heat-dissipating pipe section 412. For example, see... Figure 7 The connecting pipe section 413 can be configured to be perpendicular to both the heat absorption pipe section 411 and the heat dissipation pipe section 412. Alternatively, it can be configured as an acute or obtuse angle depending on actual needs; this embodiment of the invention does not impose specific limitations on this.

[0081] The heat-absorbing tube segment 411 can have a contact plane, which can increase the effective contact area between the heat dissipation copper tube 410 and other components, thereby improving heat dissipation efficiency. The heat-absorbing tube segment 411 can be a cuboid structure or other structures, such as a flat structure. Considering the convenience of processing and manufacturing the heat-absorbing tube segment 411, the heat dissipation copper tube 410 can be made entirely of round tube, and the heat-absorbing tube segment 411 can be processed into a flat structure with two relatively contact planes by stamping, extrusion, etc.

[0082] In some embodiments, such as Figures 6 to 8 As shown, there are two heat dissipation copper pipes 410, and the heat absorption tube segments 411 of the two heat dissipation copper pipes 410 are adjacent and arranged side by side, one above the other. It can be understood that the multiple heat absorption tube segments 411 arranged adjacently are more closely packed, which can better cover the component to be dissipated. The side by side arrangement of the heat absorption tube segments 411 also facilitates the installation and fixation of the heat dissipation copper pipes 410.

[0083] Furthermore, such as Figure 7 and Figure 8 As shown, in the vertical direction, in the upper heat dissipation copper pipe 410, the heat dissipation pipe section 412 is positioned higher than the heat absorption pipe section 411. Thus, in addition to being subject to capillary action, the heat dissipation pipe section 412 can accelerate its return flow to the heat absorption pipe section 411 under the influence of gravity. Therefore, the coolant in the heat dissipation copper pipe 410 can return to the heat absorption pipe section 411 more quickly.

[0084] Please continue reading Figure 7 and Figure 8 In the lower heat dissipation copper pipe 410, the heat dissipation pipe section 412 is positioned lower than the heat absorption pipe section 411. This ensures sufficient space between the heat dissipation pipe section 412 of the upper heat dissipation copper pipe 410 and the heat dissipation pipe section 412 of the lower heat dissipation copper pipe 410, preventing them from affecting each other's heat dissipation performance.

[0085] like Figures 6 to 9As shown, in some embodiments, the heat dissipation assembly 400 may further include a plurality of heat dissipation fins 420. The plurality of heat dissipation fins 420 are spaced apart and perpendicular to the heat absorption pipe section 411 and the heat dissipation pipe section 412. The heat dissipation fins 420 are in contact with the heat dissipation copper pipe 410. The heat absorption pipe section 411 is located at one end of the heat dissipation fin 420. The heat dissipation fin 420 has a through hole 421 for accommodating the heat dissipation pipe section 412. In this way, the heat of the heat dissipation pipe section 412 can be better dissipated through the heat dissipation fins 420.

[0086] To further improve heat dissipation, the heat-absorbing pipe section 411 also has a second contact surface, which is in contact with the end of the heat dissipation fin 420. That is, the first contact surface is in contact with the thermal pad 430 and the heat sink 320, and the second contact surface is in contact with one end of the heat dissipation fin 420. In this way, the heat absorbed by the heat-absorbing pipe section 411 from the thermal pad 430 and the heat from the light source module 200 can be dissipated to the outside of the headlight 10 through the heat dissipation fin 420. The heat dissipation copper pipe 410 can be made entirely of round pipe, and the heat-absorbing pipe section 411 can be processed into a flat structure with the first and second contact surfaces by stamping, extrusion, etc.

[0087] In some embodiments, such as Figure 2 , Figures 10 to 13 As shown, the heat dissipation assembly 400 may further include a cooling fan 440 and a fan housing 450. Multiple heat dissipation fins 420 are arranged parallel to each other and spaced apart. The cooling fan 440 has an air inlet 441 and an air outlet 442. The cooling fan 440 provides cooling airflow to the gap between adjacent heat dissipation fins 420 through the air outlet 442. The fan housing 450 is connected to the mounting plate 401 and is arranged around the outer periphery of the cooling fan 440. The fan housing 450 is provided with at least two air guides 451 corresponding to the air outlet 442 of the cooling fan 440 so that the cooling airflow converges between the at least two air guides 451.

[0088] In this embodiment of the invention, the heat dissipation assembly 400 further includes a cooling fan 440 and a fan housing 450. The fan housing 450 is provided on the outer periphery of the cooling fan 440. By providing at least two airflow guides 451 on the fan housing 450 corresponding to the air outlet 442 of the cooling fan 440, the cooling airflow generated by the cooling fan 440 can be concentrated between the airflow guides. This arrangement reduces the loss of cooling airflow, allowing more cooling airflow to act on the gaps between the cooling fins 420, thereby improving the heat dissipation efficiency of the heat dissipation assembly 400. Therefore, this solution can further improve the heat dissipation effect of the headlight 10, reduce the probability of the headlight 10 being damaged due to overheating, and thus further improve the service life of the headlight 10.

[0089] It is understandable that the number of guide sections 451 is at least two; that is, the number of guide sections 451 can be two, three, four, etc. See also Figure 13 The two airflow guides 451 can be arranged opposite each other. The two airflow guides 451 arranged opposite each other can be in a figure-eight shape or a trumpet shape, which can converge the heat dissipation airflow.

[0090] For example, see Figures 11 to 13 In some embodiments, the airflow guide 451 includes a bent section 4511 and a vertical section 4512. The bent section 4511 is connected to the fan housing 450 and is inclined in a direction away from the cooling fan 440. In this case, the lower end of the bent section 4511 can be connected to the fan housing 450 or integrally formed, and the upper end of the bent section 4511 is inclined outward away from the cooling fan 440. The vertical section 4512 is fixed to the end of the bent section 4511 and extends toward the heat dissipation fins 420. The vertical section 4512 is slightly shorter than the bent section 4511 and is mainly used to fit against the bottom surface of the heat dissipation fins 420.

[0091] For better connection with heatsink fin 420, see [link / reference] Figure 11 In some embodiments, multiple heat dissipation fins 420 are provided with protrusions 422, with the protrusions 422 located near the side of the fan housing 450; the fan housing 450 is provided with a recess 4501 corresponding to the air outlet 442 of the cooling fan 440, and the recess 4501 is engaged with the protrusions 422. Thus, when installing the fan housing 450, the recess 4501 of the fan housing 450 can be fastened onto the protrusions 422, thereby tightly sealing the gap between the cooling fan 440 and the heat dissipation fins 420, preventing heat dissipation airflow from overflowing from the gap between the cooling fan 440 and the heat dissipation fins 420, thereby improving the heat dissipation effect of the heat dissipation component.

[0092] Furthermore, to facilitate the connection between the cooling fan 440 and the fan housing 450 and prevent relative displacement between them during use, a snap-fit ​​connection can be used. Various snap-fit ​​connection methods are possible. In some embodiments, a snap-fit ​​groove 443 can be provided around the cooling fan 440, and a mounting notch 452 corresponding to the snap-fit ​​groove 443 is provided on the fan housing 450. The edge of the mounting notch 452 has a locking claw 4521 that engages with the snap-fit ​​groove 443. Thus, the connection between the cooling fan 440 and the fan housing 450 can be easily achieved through the locking claw 4521 on the fan housing 450 and the snap-fit ​​groove 443 on the cooling fan 440. When it is necessary to disassemble the fan housing 450, simply pry up the locking claw 4521 to separate the fan housing 450 from the cooling fan 440.

[0093] There can be multiple claws 4521 and locking slots 443. For example, see... Figure 11 For a cooling fan 440 with four sides, a claw 4521 and a slot 443 can be provided on each side. Alternatively, two sides can be selected, and claws 4521 and slots 443 can be provided on both sides. The number of claws 4521 and slots 443 provided on each side can also be multiple, for example, see [reference needed]. Figure 12 and Figure 13 There can be two clips 4521, spaced apart. Understandably, the more clips 4521 there are, the tighter the connection between the cooling fan 440 and the fan housing 450.

[0094] Please continue reading Figures 10 to 13 To effectively support the cooling fan 440, in some embodiments, the fan housing 450 extends by bending an extension plate 453 corresponding to the air inlet 441 of the cooling fan 440. The extension plate 453 abuts against the end of the air inlet 441 of the cooling fan 440. In this way, the fan housing 450, which is fixedly connected to the mounting plate 401, abuts against the cooling fan 440 through its extension plate 453, thus providing effective support for the cooling fan 440.

[0095] It should be noted that the number and mounting position of the extension plates 453 are related to the number and position of the mounting notches 452 or claws 4521 on the fan housing 450. For example, see... Figure 12 and Figure 13 When there are two mounting notches 452 or claws 4521 and they are positioned opposite each other at the air inlet 441 of the fan housing 450, the number of extension plates 453 can be one or two and they are positioned adjacent to the mounting notches 452 or claws 4521.

[0096] In order to avoid the extension plate 453 affecting the heat dissipation airflow of the air inlet 441 of the fan housing 450, in some embodiments, a second clearance notch 4531 may also be provided in the extension plate 453.

[0097] See Figure 11 and Figure 13 The cooling fan 440 is connected to the power supply via its wiring harness 444. To facilitate wiring and secure the wiring harness, in some embodiments, a wiring notch 454 may be provided in the fan housing 450, and a wire clamping portion 4541 extends corresponding to the wiring notch 454. The wiring harness can extend out of the fan housing 450 through the wiring notch 454 and connect to the power supply. The wire clamping portion 4541 provides clamping force to the wiring harness, such as... Figure 13As shown, the wire clamping portion 4541 can be provided on the side wall of the wiring notch 454 and is cantilevered. When the wire harness is clamped in the wire clamping portion 4541, the cantilever end of the wire clamping portion 4541 can provide clamping force to the wire harness and fix the wire harness. In addition, providing the second clearance notch 4531 and the wiring notch 454 can also reduce the weight of the heat dissipation assembly 400.

[0098] There are several ways to securely connect the fan housing 450 to the mounting plate 401, such as adhesive bonding, snap-fit ​​connection, screw connection, etc. See also... Figures 11 to 12 In some embodiments, a connecting post 4002 extending away from the mounting plate 401 can be provided on one side of the mounting plate 401, and an internal threaded hole can be provided on the connecting post 4002; at the same time, a baffle 455 abutting against the mounting plate 401 is provided on the periphery of the fan housing 450, and the baffle 455 has a connecting hole 4551 corresponding to the internal threaded hole. In this way, the fan housing 450 and the mounting plate 401 can be fixedly connected by screws passing through the connecting hole 4551 and the internal threaded hole.

[0099] To facilitate quick installation of the fan housing 450 and mounting plate 401, in some embodiments, see [link to relevant documentation]. Figures 11 to 12 Alternatively, guide plates 456 can be provided on both sides of the fan housing 450 corresponding to the connecting post 4002. When installing the fan housing 450 and mounting plate 401, simply insert the connecting post 4002 into the two guide plates 456, and push the mounting plate 401 or fan housing 450 along the guide plates 456 until the connecting post 4002 abuts against the baffle 455, thus installing the fan housing 450 and mounting plate 401 into place. It is understood that the distance between the two guide plates 456 can be gradually reduced along the direction near the baffle 455. Simultaneously, the connecting post 4002 can be correspondingly set to a tapered shape with the smaller end near the baffle 455. This makes it easier to align the connecting post 4002 when it is inserted towards the two guide plates 456.

[0100] In addition, see Figure 12In some embodiments, a first protrusion 457 protruding towards the connecting post 4002 is formed on the guide plate 456, and / or a second protrusion 458 protruding towards the connecting post 4002 is formed on the fan housing 450. The two first protrusions 457 on the two guide plates 456 are arranged opposite to each other. When the connecting post 4002 is inserted into the baffle 455, the two first protrusions 457 can press the connecting post 4002 tightly, preventing the connecting post 4002 from shaking relative to the baffle 455. In addition to the first protrusion 457 protruding towards the connecting post 4002 on the guide plate 456, a second protrusion 458 protruding towards the connecting post 4002 can also be formed on the fan housing 450. Under the combined action of the first protrusion 457 and the second protrusion 458, the connecting post 4002 can be further pressed tightly, preventing the connecting post 4002 from shaking relative to the baffle 455 and the fan housing 450.

[0101] Please refer to Figure 1 , Figures 14 to 17 In some embodiments, the lens assembly 100 includes a lens structure 110 and a support structure 120. The lens structure 110 is used to receive and diffuse light emitted from the light source module 200. One side of the support structure 120 is connected to the lens structure 110, and the other side is connected to the circuit board 300. The support structure 120 is used to support the lens structure 110. By providing the support structure 120, it can provide support for the lens structure 110 and also serve as a substrate for fixing the circuit board 300, thereby improving the strength of the lens assembly 100 and the convenience of connecting it with other components.

[0102] Furthermore, the support structure 120 includes a base 121 and a first connector 122 connected to each other. The first connector 122 is connected to the lens structure 110, and the base 121 is connected to the circuit board 300. The base 121 includes a housing portion 1211 and a rib portion 1214. The housing portion 1211 is surrounded by a light-transmitting opening 1212 for transmitting light, and the housing portion 1211 has a weight-reducing cavity 1213. The rib portion 1214 is located in the weight-reducing cavity 1213 and is connected to the housing portion 1211.

[0103] In this embodiment of the invention, the light-transmitting opening 1212 is used to allow light emitted from the light source module 200 to pass through. In this embodiment of the invention, the size and shape of the light-transmitting opening 1212 are not limited, as long as the light-transmitting opening 1212 can allow light emitted from the light source module 200 to pass through. In some embodiments, the light-transmitting opening 1212 is configured as a rectangular hole.

[0104] The stiffener portion 1214 is used to strengthen the structural strength of the shell portion 1211. In this embodiment of the invention, the structure of the stiffener portion 1214 is not limited, as long as the stiffener portion 1214 can provide support for the shell portion 1211. For example, in this embodiment of the invention, the stiffener portion 1214 is configured as a grid structure, in which the grid bars are connected to each other, which can provide better support for the shell portion 1211.

[0105] In this embodiment of the invention, the bracket structure 120 supports the lens structure 110. The first connector 122 connects the bracket structure 120 and the lens structure 110. The housing part 1211 is provided with a light-transmitting opening 1212, which allows light to pass through the bracket structure 120 and enter the lens structure 110. The housing part 1211 is provided with a weight-reducing cavity 1213, which can reduce the weight of the bracket structure 120. The rib part 1214 is located in the weight-reducing cavity 1213, which can strengthen the structure of the housing part 1211. At this time, the base 121 not only has a lighter weight but also ensures that it has sufficient structural strength.

[0106] Please refer to Figures 15 to 17 In some embodiments, along the axial direction of the lens structure 110, the housing portion 1211 is recessed on the side near the light source module 200 toward the direction away from the light source module 200 to form a weight reduction cavity 1213, and the first connector 122 protrudes from the end face of the base 121 away from the light source module 200.

[0107] The housing portion 1211 is recessed on the side near the light source module 200 to form a weight-reducing cavity 1213, ensuring that the side of the housing portion 1211 away from the light source module 200 has a solid structure. At this time, the first connector 122 can be protruded on the end face of the base 121 away from the light source module 200. Since the lens structure 110 usually has a long length along the lens assembly 100, that is, the lens structure 110 itself needs to occupy a lot of space in the length direction of the lens assembly 100. By protruding the first connector 122 on the end face of the base 121 away from the light source module 200, the first connector 122 and the base 121 are arranged along the axial direction of the lens structure 110, reducing the space occupied by the lens structure 110 in the radial direction of the lens assembly 100.

[0108] The weight-reducing cavity 1213 is used to reduce the weight of the base 121. In this embodiment of the invention, the shape of the weight-reducing cavity 1213 is not limited, as long as it can reduce the weight of the base 121. In some embodiments, the shell portion 1211 is made by stamping sheet metal, so the weight-reducing cavity 1213 can be formed when the shell portion 1211 is manufactured. After the shell portion 1211 is manufactured, it is connected to the stiffening plate portion 1214. In other embodiments of the invention, the shell portion 1211 and the stiffening plate portion 1214 are integrally injection molded, that is, after the base 121 is injection molded, the weight-reducing cavity 1213 can be formed in the shell portion 1211, and the shell portion 1211 and the stiffening plate portion 1214 are connected.

[0109] Please refer to Figures 15 to 18 In some embodiments, the lens structure 110 includes a lens barrel 114 and a second connector 115 fixed to the periphery of the lens barrel 114. The second connector 115 is fixedly connected to the first connector 122. The mutual connection between the second connector 115 and the first connector 122 realizes the mutual connection between the lens structure 110 and the support structure 120.

[0110] In this embodiment of the invention, the connection method of the first connector 122 and the second connector 115 is not limited. For example, in some embodiments, one of the first connector 122 and the second connector 115 has a connecting groove 1221, and the other is at least partially located in the connecting groove 1221. The initial connection between the first connector 122 and the second connector 115 is achieved by inserting the second connector 115 into the connecting groove 1221 provided on the first connector 122, or by inserting the first connector 122 into the connecting groove 1221 provided on the second connector 115. On this basis, the first connector 122 and the second connector 115 can still be further connected by bolts, pins or other connectors to strengthen the connection strength between the first connector 122 and the second connector 115.

[0111] Please refer to Figures 16 to 18In some embodiments, the second connector 115 and the connecting groove 1221 are both arranged along the axial direction of the lens structure 110. The first connector 122 has a connecting groove 1221, which connects to the side wall of the first connector 122 away from the base 121. The second connector 115 is slidably connected to the groove wall of the connecting groove 1221. When the first connector 122 has a connecting groove 1221, during the assembly of the lens structure 110 and the bracket structure 120, the second connector 115 is slid along the groove wall of the connecting groove 1221 into the connecting groove 1221. Since the connecting groove 1221 and the second connector 115 are both arranged along the axial direction of the lens structure 110, the connecting groove 1221 can guide the second connector 115, and when the second connector 115 is in the connecting groove 1221, the relative position of the lens structure 110 and the bracket structure 120 can be fixed.

[0112] In other embodiments, the first connector 122 and the connecting groove 1221 are both arranged along the axial direction of the lens structure 110. The second connector 115 has a connecting groove 1221, which connects to the side wall of the second connector 115 away from the base 121. The first connector 122 is slidably connected to the groove wall of the connecting groove 1221. When the second connector 115 has a connecting groove 1221, the first connector 122 is slid along the groove wall of the connecting groove 1221 into the connecting groove 1221 during the assembly of the lens structure 110 and the bracket structure 120. Since the connecting groove 1221 and the first connector 122 are both arranged along the axial direction of the lens assembly 100, the connecting groove 1221 can guide the first connector 122, and the relative position of the lens structure 110 and the bracket structure 120 can be fixed when the first connector 122 is in the connecting groove 1221.

[0113] In some embodiments, the first connector 122 has a connecting groove 1221, and the lens structure 110 further includes a limiting member 113. The limiting member 113 is fixed to the periphery of the lens barrel 114, and the limiting member 113 is connected to the end face of the second connector 115 away from the base 121. The limiting member 113 can prevent the first connector 122 or the second connector 115 from completely entering the connecting groove 1221. In some embodiments, the limiting member 113 and the first connector 122 form a "T" shape.

[0114] Please refer to Figure 15 as well as Figure 17In some embodiments, the end face of the base 121 away from the first connector 122 has a receiving groove 1215, and the support structure 120 further includes a sealing member 123, which is partially located within the receiving groove 1215 and protrudes from the end face of the base 121 away from the first connector 122. The sealing member 123 can improve the sealing between the circuit board 300 and the base 121, preventing light emitted from the light source module 200 from escaping through the gap between the circuit board 300 and the base 121.

[0115] Optionally, the seal 123 is an elastic sealing ring, which is partially located in the receiving groove 1215. When the circuit board 300 and the base 121 are connected to each other, the circuit board 300 and the base 121 press against each other to make the elastic sealing ring in close contact with the circuit board 300 and the groove wall of the receiving groove 1215.

[0116] Reference Figure 1 , Figure 2 , Figures 19 to 21 In some embodiments, the light source module 200 is located on the image source side, and the lens structure 110 is located on the imaging side. The lens structure 110 also includes a plurality of lenses 101 with optical power located in the lens barrel 114. The plurality of lenses 101 are arranged in sequence from the imaging side to the image source side along the first optical axis 102, including a first lens L1, a second lens L2, a third lens L3 and a fourth lens L4. The light from the light source module 200 can pass through the fourth lens L4, the third lens L3, the second lens L2 and the first lens L1 in sequence to reach the imaging side of the lens assembly 100. The lenses 101 in the lens structure 110 are coaxially arranged, and the common axis of the lenses 101 is the first optical axis 102 of the lens structure 110. Each lens 101 can be installed in the lens barrel 114 of the lens structure 110.

[0117] The imaging-side surface S1 and the image-source-side surface S2 of the first lens L1 are both convex near the first optical axis 102; the imaging-side surface S3 of the second lens L2 is convex near the first optical axis 102, and the image-source-side surface S4 is concave near the first optical axis 102; after the first lens L1 converges the light rays, the second lens L2 moderately expands them, making the light rays tend to be flat after entering the lens structure 110. The convex-concave design of the second lens L2 helps to reduce the incidence angle of the principal rays on the imaging-side and image-source-side surfaces of the two lenses, thus reducing the generation of off-axis aberrations; the third lens L... The imaging-side surface S5 and the image source-side surface S6 of lens 3 are both convex near the first optical axis 102, which helps to expand light and facilitates the miniaturization of the lens design, playing an important role in reducing the lens thickness. The imaging-side surface S7 of the fourth lens L4 is convex near the first optical axis 102, and the image source-side surface S8 is concave near the first optical axis 102, further shortening the length of the lens structure 110 in the direction of the first optical axis 102. The convex and concave surface design avoids the light from converging too quickly on the first optical axis 102, thereby effectively reducing field curvature and improving the overall image quality. By rationally designing the surface shapes of the first lens L1 to the fourth lens L4, this embodiment of the invention can reduce the number of lenses used. The lens structure 110 uses only four lenses 101, that is, improving the image quality while miniaturizing the lens assembly 100.

[0118] In this lens, the imaging-side surface S1 and the image-source-side surface S2 of the first lens L1 are both aspherical; and the imaging-side surface S3 and the image-source-side surface S4 of the second lens L2 are both aspherical. When at least one surface of a lens is aspherical, the lens is said to have an aspherical surface profile. The aspherical design helps the lens structure 110 to more effectively eliminate aberrations and improve image quality. When a lens surface is aspherical, the lens surface may have a point of inflection. At this time, the surface profile changes radially. For example, the imaging-side surface S3 of the second lens L2 is convex near the first optical axis 102, and the image-source-side surface S4 is concave near the first optical axis 102. The surface profile design of the point of inflection can effectively correct the field curvature and distortion aberrations in the edge field of view of the lens structure 110, thereby improving image quality. The imaging-side surface S54 and the image-source-side surface S6 of the third lens L3 are both spherical; and the imaging-side surface S7 and the image-source-side surface S8 of the fourth lens L4 are both spherical. The spherical surface design can reduce the difficulty and cost of lens fabrication. In this embodiment of the invention, in order to balance fabrication cost, fabrication difficulty, image quality, and assembly difficulty, the design of each lens surface in the lens structure 110 is a combination of spherical and aspherical surface shapes.

[0119] Both the first lens L1 and the second lens L2 are plastic lenses, made of materials such as polycarbonate and resin. Using plastic lenses reduces the production cost of the lens structure 110. Furthermore, it effectively reduces aberrations and length, and also makes the overall weight of the lens structure 110 lighter. The third lens L3 and the fourth lens L4 are both glass lenses. Glass lenses can withstand high or low temperatures and have excellent optical performance and stability. Utilizing the cooling effect of the glass material in the third lens L3 and fourth lens L4 effectively reduces the impact of temperature changes in the projected light on the lens structure 110, thereby maintaining good and stable image quality. The combination of glass and plastic lenses utilizes the lower coefficient of thermal expansion of glass and the higher coefficient of thermal expansion of plastic to adjust the temperature compensation of the entire lens structure 110. This also helps reduce spherical aberration and optimize field curvature and distortion.

[0120] In some embodiments, at least one of the imaging-side surface S3 and the image-source-side surface S4 of the second lens L2 is coated with an anti-reflection film. The anti-reflection film reduces the intensity of reflected light, thereby increasing the intensity of transmitted light and making the image of the lens assembly 100 clearer. The principle is to utilize the interference effect produced by different optical material films to eliminate incident and reflected light, thereby improving light transmittance. The anti-reflection film is deposited on the surface of the second lens L2, thereby increasing the light transmittance of the second lens L2, reducing surface reflection of the second lens L2, and increasing the transmittance of the second lens L2.

[0121] Similarly, at least one of the imaging-side surface S5 and the image source-side surface S6 of the third lens L3 is coated with an anti-reflection film, and at least one of the imaging-side surface S7 and the image source-side surface S8 of the fourth lens L4 is coated with an anti-reflection film, thereby increasing the light transmission performance of the third lens L3 and the fourth lens L4, reducing surface reflection of the third lens L3 and the fourth lens L4, and increasing the transmittance of the third lens L3 and the fourth lens L4.

[0122] In some embodiments, a light source module 200 emits light on the image source side of the lens assembly 100, which increases the temperature inside the lens structure 110, thus placing the internal lens in a high-temperature working environment. Since the fourth lens L4 is closest to the image source side of the lens assembly 100, that is, the fourth lens L4 is closest to the light source module 200, the temperature resistance of the fourth lens L4 in this embodiment of the invention is not lower than 150°C, and the temperature resistance of the first lens L1, the second lens L2 and the third lens L3 is not lower than 105°C, thereby ensuring the normal operation of the four lenses.

[0123] In some embodiments, the lens structure 110 satisfies the condition: 30mm ≤ f ≤ 40mm. For example, f can be 30mm, 31mm, 32mm, 35mm, 36mm, or 40mm, where f is the effective focal length of the lens assembly 100. Based on the above embodiments, by reasonably limiting the effective focal length of the lens structure 110, the lens assembly 100 can improve image quality while ensuring miniaturization.

[0124] In some embodiments, the lens structure 110 satisfies the condition: -20°≤FOV≤20°, where FOV can be -20°, -10°, -5°, 5°, 15° or 20°, etc., where FOV is the maximum field of view of the lens structure 110 to meet the usage requirements of the lens structure 110.

[0125] Furthermore, the lens structure 110 satisfies the condition: 40mm≤EDP≤55mm. For example, EDP can be 40mm, 43mm, 45mm, 46mm, 50mm, or 55mm, etc., where EDP is the entrance pupil diameter of the lens structure 110.

[0126] Based on the above embodiments, by reasonably limiting the maximum field of view and entrance pupil diameter of the lens structure 110, the relationship between the focal length and the maximum field of view of the lens structure 110 is coordinated. This allows the lens structure 110 to meet the requirements of a large image plane and high-quality imaging, while also ensuring sufficient image plane brightness at the edge of the field of view by controlling the entrance pupil diameter. This prevents the entrance pupil diameter from being too small, which would be detrimental to the improvement of the large aperture lens structure 110 and the image plane brightness. At the same time, it can prevent the entrance pupil diameter from being too large, thereby reducing the astigmatism of the light beam at the edge of the field of view, which is beneficial to improving the imaging quality of the lens structure 110. It also prevents the image plane from bending, which is beneficial to improving the lens resolution of the lens structure 110.

[0127] Furthermore, in some embodiments, the lens structure 110 satisfies the condition: 0.55 ≤ f / EDP ≤ 0.75. For example, f / EDP can be 0.55, 0.6, 0.61, 0.64, 0.68, or 0.75, etc. Based on the above embodiments, by reasonably limiting the ratio of the maximum field of view and the entrance pupil diameter of the lens structure 110, it is beneficial to achieve miniaturization of the lens structure 110, while taking into account both design difficulty and the requirements of the field of view, providing a combination effect of a large angle of view and a large aperture. When f / EDP < 0.55, that is, when selecting a small angle of view with a large aperture, it will increase the design difficulty and further enlarge the lens diameter, which is not conducive to reducing tolerance sensitivity and improving yield. When f / EDP > 0.7, that is, when using a large angle of view with a small aperture, it will result in insufficient relative illumination in the peripheral field of view and insufficient resolution, which is not conducive to improving the imaging quality of the lens structure 110.

[0128] In summary, the embodiments of the present invention achieve a balance between the optical path difference between the central field of view and the peripheral field of view by rationally designing the surface shape and material of the first lens L1 to the fourth lens L4, and by rationally limiting the maximum field of view and entrance pupil diameter of the lens structure 110. This effectively improves the field curvature and the distortion of the lens assembly 100, thereby controlling the distortion of the lens assembly 100 within -5% to 5% and improving the imaging quality.

[0129] The lens structure 110 will be described in detail below with reference to specific parameters.

[0130] See the schematic diagram of the lens structure 110 in this embodiment of the invention. Figure 20 The lens structure 110 includes a first lens L1, a second lens L2, a third lens L3 and a fourth lens L4 along the first optical axis 102 from the imaging side to the image source side. The first lens L1 and the second lens L2 are both plastic lenses, and the third lens L3 and the fourth lens L4 are both glass lenses.

[0131] The imaging-side surface S1 and the image-source-side surface S2 of the first lens L1 are both convex near the first optical axis 102, and the first lens L1 is a plastic aspherical lens. The imaging-side surface S3 of the second lens L2 is convex near the first optical axis 102, and the image-source-side surface S4 is concave near the first optical axis 102; the second lens L2 is also a plastic aspherical lens. The imaging-side surface S5 and the image-source-side surface S6 of the third lens L3 are both convex near the first optical axis 102, and the third lens L3 is a glass spherical lens. The imaging-side surface S7 of the fourth lens L4 is convex near the first optical axis 102, and the image-source-side surface S8 is concave near the first optical axis 102; the fourth lens L4 is also a glass spherical lens.

[0132] In one embodiment, the focal length reference wavelength of each lens is 546.1 nm, the refractive index and Abbe number reference wavelength are 546.1 nm, in the lens structure 110, f = 30.56 mm, FNO = 0.63, FOV = 9°, TTL = 63.8 mm, f is the effective focal length of the lens structure 110, FNO represents the aperture number, FOV represents the maximum field of view of the lens structure 110, and TTL represents the distance from the imaging side of the first lens L1 to the image source side on the first optical axis 102.

[0133] For the first lens L1 and the second lens L2, which are aspherical surfaces, the aspherical equations satisfied by the aspherical surfaces are:

[0134]

[0135] Where Z is the distance from the corresponding point on the aspherical surface to the plane tangent to the vertex of the surface, r is the distance from the corresponding point on the aspherical surface to the first optical axis 102, c represents the curvature of the surface at the vertex, K represents the conic constant, and A4, A6, A8, A10, A12, A14, A16, A18, and A20 represent the aspherical coefficients of the 4th, 6th, 8th, 10th, and 12th orders, respectively.

[0136] Figure 21 This is an example of an astigmatism curve and a distortion curve.

[0137] The horizontal axis of the astigmatism curve represents the image plane offset, and the vertical axis represents the field of view angle. Figure 21 The wavelengths given are 644.00nm, 620.00nm, 580.00nm, 520.00nm, 500.00nm, 480.00nm, 440.00nm and 436.00nm respectively. The image plane offset of different fields of view is within -17.5 micrometers to 10.5 micrometers, which indicates that the lens structure 110 in the embodiment of the present invention has small spherical aberration and good imaging quality.

[0138] The distortion curve graph shows the distortion rate on the horizontal axis and the field of view on the vertical axis. Figure 21 The distortion curves given in the figure show that when the wavelengths are 656nm, 486nm, 435nm, 387nm and 346nm respectively, the distortion of the lens structure 110 in the embodiment of the present invention is well corrected.

[0139] Depend on Figure 21 As can be seen from the astigmatism and distortion curves, the astigmatism and distortion of the lens structure 110 are well controlled, thus the lens structure 110 of this embodiment has good imaging quality.

[0140] Please refer to Figures 22 to 25 In some embodiments, the lens structure 110 has a first optical axis 102. The center of the light source module 200 is offset from the first optical axis 102, so that the center line 701 of the emission field of view 700 corresponding to the light source module 200 intersects the first optical axis 102.

[0141] In this embodiment of the invention, the center of the light source module 200 is offset from the first optical axis 102, so that the emission field of view 700 corresponding to the light source module 200 will be deflected relative to the first optical axis 102. When the headlight of the present invention is applied to a vehicle, the lens structure 110 of the lens assembly 100 can be oriented towards the front of the vehicle, so that the first optical axis 102 extends along the front-rear direction of the vehicle. If the left headlight of the vehicle uses the headlight of the present invention, then the center of the light source module 200 can be deflected to the right relative to the first optical axis 102, so that the emission field of view 700 corresponding to the light source module 200 will be deflected to the left relative to the first optical axis 102. In the lighting mode, the illumination range to the left front of the vehicle can be widened, thereby widening the illumination range of the entire vehicle. Similarly, if the vehicle's right headlight uses the headlight described in this invention, the center of the light source module 200 can be shifted to the left relative to the first optical axis 102. This causes the emission field of view 700 corresponding to the light source module 200 to shift to the right relative to the first optical axis 102, thus widening the illumination range for the right front of the vehicle in illumination mode, thereby expanding the overall illumination range of the vehicle. This achieves the goal of improving projection clarity without affecting the driver's observation range.

[0142] In some embodiments, such as Figure 25 As shown, the emission field of view 700 corresponding to the light source module 200 includes a first sub-field of view 702 and a second sub-field of view 703. The first optical axis 102 extends along a first direction, and the first sub-field of view 702 and the second sub-field of view 703 are respectively disposed on both sides of the first optical axis 102 along a second direction. The first direction is the front-rear direction of the vehicle, and the second direction is the left-right direction of the vehicle. The field of view angle α of the first sub-field of view 702 is greater than the field of view angle β of the second sub-field of view 703.

[0143] It is understandable that, such as Figure 26 As shown, the light-emitting devices 201 in the light source module 200 can be divided into two parts with the first optical axis 102 as the boundary. Each part contains multiple light-emitting devices 201. The part to the right of the first optical axis 102 is called the first part 230, and the part to the left of the first optical axis 102 is called the second part 240. Based on the imaging law of the lens assembly 100, the sub-field of view formed by the light emitted from the first part 230 after passing through the lens assembly 100 is located to the left of the first optical axis 102, and the sub-field of view formed by the light emitted from the second part 240 after passing through the lens assembly 100 is located to the right of the first optical axis 102.

[0144] In this embodiment of the invention, the first sub-field of view 702 and the second sub-field of view 703 are respectively the sub-fields of view located on both sides of the first optical axis 102. The field of view angle of the first sub-field of view 702 is greater than the field of view angle of the second sub-field of view 703, which means that the emission field of view 700 of the light source module 200 has been deflected relative to the first optical axis 102.

[0145] Furthermore, the field of view α of the first sub-field of view 702 is 15 degrees, and the field of view α of the second sub-field of view 703 is 9 degrees. At this time, the field of view β of the emission field of view 700 corresponding to the light source module 200 is 24 degrees. After testing, if one of the vehicle's left and right headlights has a field of view α of 24 degrees and is deflected by 3 degrees, and the other has a field of view α of 36 degrees and is not deflected, then the left and right headlights, when used together, can illuminate six lanes, thus well meeting the driver's observation requirements while driving.

[0146] Furthermore, along the second direction, the center of the light source module 200 is offset from the first optical axis 102 by a distance greater than or equal to 1 mm and less than or equal to 2 mm. This allows the emission field of view 700 of the light source module 200 to deflect relative to the first optical axis 102, while ensuring that the deflection is not excessive.

[0147] Furthermore, along the height direction of the vehicle, the center of the light source module 200 is offset from the first optical axis 102 by a distance greater than or equal to 0.7 mm and less than or equal to 1.2 mm. Thus, when the headlight 10 is installed on the vehicle, the center of the light source module 200 is 0.7 mm to 1.2 mm above the first optical axis 102, which is beneficial for the projected pattern or image to fall on the ground in front of the vehicle.

[0148] In some of these embodiments, such as Figure 28 As shown, a portion of the multiple light-emitting devices 201 constitute a first device group 210, and another portion constitutes a second device group 220. Both the first device group 210 and the second device group 220 contain a plurality of light-emitting devices 201. In illumination mode, all light-emitting devices 201 in the first device group 210 and all light-emitting devices 201 in the second device group 220 emit light. In projection mode, all light-emitting devices 201 in the first device group emit light, while none of the light-emitting devices 201 in the second device group emit light.

[0149] In this embodiment of the invention, the light-emitting devices 201 in the light source module 200 can be divided into a first device group 210 and a second device group 220 according to functional requirements. The light-emitting devices 201 in the first device group 210 are used for both projection and illumination, while the light-emitting devices 201 in the second device group 220 are used only for illumination. That is, when the light source module 200 is in illumination mode, both the light-emitting devices 201 in the first device group 210 and the second device group 220 emit light, thereby maximizing the illumination brightness. In projection mode, only the light-emitting devices 201 in the first device group 210 emit light. Thus, when the light-emitting devices 201 in the first device group 210 are distributed in a specific pattern, the projected light can form a specific pattern. It is understood that in this embodiment of the invention, the light-emitting devices 201 in the second device group 220 do not emit light in projection mode, which results in a smaller illumination range in this mode. Therefore, it is suitable for projection when the vehicle is parked.

[0150] In other embodiments, a portion of the plurality of light-emitting devices 201 constitutes a first device group 210, and another portion constitutes a second device group 220, wherein both the first device group 210 and the second device group 220 contain a plurality of light-emitting devices 201. In illumination mode, all light-emitting devices 201 in the first device group 210 emit light, and all light-emitting devices 201 in the second device group 220 emit light, with the luminous intensity of the light-emitting devices 201 in the first device group 210 equal to the luminous intensity of the light-emitting devices 201 in the second device group 220. In projection mode, all light-emitting devices 201 in the first device group emit light, and all light-emitting devices 201 in the second device group emit light, with the luminous intensity of the light-emitting devices 201 in the first device group 210 greater than the luminous intensity of the light-emitting devices 201 in the second device group 220.

[0151] In this embodiment of the invention, the light-emitting devices 201 in the light source module 200 are also divided into a first device group 210 and a second device group 220. Similarly, the light-emitting devices 201 in the first device group 210 are used for both projection and illumination, while the light-emitting devices 201 in the second device group 220 are used only for illumination. However, unlike the previous embodiment, in projection mode, both the light-emitting devices 201 in the first device group 210 and the second device group 220 emit light, but the luminous intensity of the two groups of light-emitting devices 201 is different. That is, the luminous intensity of the light-emitting devices 201 in the first device group 210 is greater. Thus, while forming the projection pattern, the light-emitting devices 201 in the second device group 220 can also provide illumination. This mode can be used for projection when the vehicle is parked or when the vehicle is in motion.

[0152] In one embodiment, the center of the first device group 210 is located on the first optical axis 102. With this configuration, in projection mode, the projected pattern or image will be located directly in front of the headlight 10, rather than at the center of the front of the vehicle.

[0153] In another embodiment, the center of the first device group 210 is offset from the first optical axis 102. With this configuration, in projection mode, the projected pattern or image will be offset from directly in front of the headlights. For example, the projected pattern or image can be positioned at the center of the front of the vehicle.

[0154] Reference Figure 14 , Figure 15 and Figure 29 In some embodiments, the headlight 10 further includes a heat insulation sheet 600, which is located between the circuit board 300 and the lens assembly 100 and connected to the lens assembly 100. The heat insulation sheet 600 has a light-transmitting hole 611 corresponding to the light source module 200.

[0155] In this embodiment of the invention, when the headlight 10 is working, the circuit board 300 supplies power to the light source module 200, causing the light source module 200 to emit light. The light emitted by the light source module 200 passes through the light-transmitting hole 611 on the heat insulation sheet 600 and enters the lens assembly 100. After being diffused by the lens assembly 100, it forms an illumination or projection area in front of the headlight 10. Since the light source module 200 generates heat when it is working, the heat insulation sheet 600 can reduce the heat transferred from the light source module 200 to the lens assembly 100, and can also block stray light generated by the light source module 200 from entering the lens assembly 100 and affecting the illumination quality of the headlight 10 module.

[0156] When the headlight 10 is not working, some ambient light will enter the headlight 10 module through the lens assembly 100. Since the lens assembly 100 has a diverging effect on the light emitted from the light source module 200, it also has a focusing effect on the light entering the headlight 10 module from the outside. This causes the ambient natural light entering the headlight 10 module to be focused into high-energy light, which can release a lot of heat. At this time, the heat insulation sheet 600 can reduce the amount of ambient natural light entering the headlight 10 module that shines on the circuit board 300 and the light source module 200, thereby reducing the damage caused by the ambient natural light entering the headlight 10 to the circuit board 300 and the light source module 200 and extending the life of the headlight 10 module.

[0157] It is understood that the heat insulation sheet 600 in this embodiment of the invention can employ both physical and chemical matting methods. Physical matting involves adding a matting agent to the coating, causing the coating to form a film on the surface of the heat insulation sheet 600. The coating precipitates onto the surface of the coating, making its surface uneven, increasing light scattering and reducing reflection. Chemical matting achieves low gloss by introducing light-absorbing structures or groups, such as polypropylene grafted substances, into the coating.

[0158] In some embodiments, the heat insulation sheet 600 has a light-absorbing layer at least on the side facing the lens assembly 100. Having a light-absorbing layer on the side facing the lens assembly 100 improves the heat insulation sheet 600's ability to absorb light entering the headlight 10 module from the outside, further enhancing the protection of the circuit board 300 and the light source module 200. Having a light-absorbing layer on the side away from the lens assembly 100 allows the heat insulation sheet 600 to absorb some stray light generated by the light source module 200, further improving the lighting quality of the headlight 10. In this embodiment, the outer surface of the heat insulation sheet 600 is provided with a light-absorbing layer.

[0159] In some embodiments, the light-absorbing layer is a black zinc plating layer, which has good extinction and solar heat absorption capabilities, helping the heat insulation sheet 600 to eliminate stray light emitted from the light source module 200 and external natural light, and to absorb stray light emitted from the light source module 200 and external natural light. The light-absorbing layer in these embodiments can also be configured as other extinction and / or light-absorbing materials, such as extinction resins.

[0160] Please refer to Figure 30 and Figure 31 In some embodiments, the heat insulation sheet 600 includes a main body 610 and a connecting part 620. The main body 610 has a light-transmitting hole 611. The connecting part 620 is connected to the main body 610 and is also connected to the lens assembly 100.

[0161] The main body 610 and the light source module 200 are axially spaced apart from each other in the lens assembly 100, and there is no direct contact between them. The heat generated after the outside natural light shines on the heat insulation sheet 600 can only be transmitted through the air. Furthermore, by connecting the heat insulation sheet 600 to the lens assembly 100 through the connecting part 620, the heat transferred from the heat insulation sheet 600 to the light source module 200 can be reduced.

[0162] To ensure that the heat insulation sheet 600 blocks external natural light, in some embodiments, along the axial direction of the lens structure 110, the main body 610 coincides with the end of the lens structure 110 near the light source module 200, so that external natural light can only shine on the heat insulation sheet 600.

[0163] Please refer to Figures 29 to 32In some embodiments, a positioning edge 612 is formed on a portion of the edge of the main body 610, and the lens structure 110 is provided with a first positioning member 111. The first positioning member 111 abuts against the positioning edge 612. When the heat insulation sheet 600 is assembled with the lens assembly 100, the first positioning member 111 abuts against the positioning edge 612 to position the heat insulation sheet 600.

[0164] In this embodiment of the invention, the first positioning member 111 can be configured as a positioning protrusion. Any sidewall of the positioning protrusion abuts against the positioning edge 612. The shape of the side of the positioning protrusion that abuts against the positioning edge 612 should correspond to the shape of the positioning edge 612. Preferably, any sidewall of the positioning protrusion can fit against the positioning edge 612.

[0165] Please refer to Figures 29 to 32 In some embodiments, the heat insulation sheet 600 further includes a positioning part 630, which is connected to the main body part 610 and has a positioning hole 631. The lens assembly 100 is provided with a second positioning member 112, which passes through the positioning hole 631. When the heat insulation sheet 600 and the lens assembly 100 are assembled, the second positioning member 112 passes through the positioning hole 631, which can guide the assembly of the heat insulation sheet 600 and the lens assembly 100 and facilitate the subsequent interconnection of the heat insulation sheet 600 and the lens assembly 100.

[0166] Please refer to Figure 29 and Figure 30 In some embodiments, the second positioning member 112 is configured as a positioning post, and the positioning post is inserted through the positioning hole 631 and then fits against the hole wall of the positioning hole 631.

[0167] Please refer to Figures 29 to 32 In some embodiments, the heat insulation sheet 600 may be configured as a centrally symmetrical structure, that is, the main body 610 is configured as a centrally symmetrical structure, the number of positioning parts 630 is two, the two positioning parts 630 are centrally symmetrical about the main body 610, the number of connecting parts 620 is two, the two connecting parts 620 are centrally symmetrical about the main body 610.

[0168] Please refer to Figures 29 to 32 In some embodiments, the main body 610 extends toward the circuit board 300 relative to the connecting part 620 and is provided with a connecting groove 613. The end of the lens structure 110 near the circuit board 300 is located in the connecting groove 613 and connected to the heat insulation sheet 600. The lens bracket 120 is connected to the lens structure 110 and to the circuit board 300.

[0169] After the main body 610 forms the connecting groove 613, one end of the lens structure 110 is located in the connecting groove 613. That is, the groove wall of the connecting groove 613 wraps around at least part of the end of the lens structure 110 near the light source module 200. When the external natural light enters the headlight 10 module through the lens structure 110, the groove wall of the connecting groove 613 can better block the external natural light and absorb the heat of the external natural light.

[0170] Please refer to Figure 30 and Figure 31 In some embodiments, the heat insulation sheet 600 has a weight reduction opening 640 that penetrates the heat insulation sheet 600 at the bend between the main body portion 610 and the connecting portion 620, and also penetrates the heat insulation sheet 600 at the bend between the bottom wall and the side wall of the connecting groove 613.

[0171] The weight-reducing opening 640 can reduce the weight of the heat insulation sheet 600. During the manufacturing process of the heat insulation sheet 600, the sheet metal needs to be bent to form the main body 610, the connecting part 620 and the positioning part 630. Since the weight-reducing opening 640 is located at the position where the sheet metal needs to be bent, it is convenient to bend the sheet metal to form the heat insulation sheet 600.

[0172] In order to ensure that the weight reduction opening 640 does not affect the light-absorbing and heat-exting capabilities of the heat insulation sheet 600, in some embodiments, the weight reduction opening 640 coincides with one end of the lens structure 110 located in the connecting groove 613. That is, the lens structure 110 can abut against the bottom wall of the connecting groove 613 so that the end of the lens structure 110 blocks the weight reduction opening 640, preventing the light emitted from the light source module 200 and the external natural light from passing through the weight reduction opening 640.

[0173] Please refer to Figure 16 and Figure 29 In some embodiments, the lens bracket 120 is provided with a light-transmitting opening 1212, and the heat insulation sheet 600 is located inside the light-transmitting opening 1212. The lens bracket 120 protects the heat insulation sheet 600, especially the black zinc plating on the heat insulation sheet 600, so as to ensure the light-extinguishing and heat-absorbing capacity of the heat insulation sheet 600.

[0174] Another embodiment of the present invention provides a vehicle including a left headlight and a right headlight, wherein at least one of the left headlight and the right headlight is the headlight described in the first aspect. Exemplarily, the vehicle may be a passenger car, a commercial vehicle, or a freight vehicle, etc. The drive type of the vehicle is not limited; it may be a gasoline-powered vehicle, an electric vehicle, or a hybrid vehicle.

[0175] The vehicle in this embodiment of the invention is based on the same concept as the headlights in the above embodiments. Therefore, the vehicle in this embodiment of the invention can achieve the technical effects of the headlights in the above embodiments.

[0176] It is understood that the vehicle includes a left headlight and a right headlight, wherein one of the left headlight and the right headlight adopts the headlight described in the above embodiment, or both the left headlight and the right headlight adopt the headlight described in the above embodiment.

[0177] In one embodiment, the left headlight is the same as the headlight described in the previous embodiment, and the center of the light source module 200 is located to the upper right of the first optical axis 102. This arrangement causes the emission field of view 700 corresponding to the light source module 200 to deflect to the left, thus widening the illumination range to the left front of the vehicle. While the illumination field of view of the right headlight remains unchanged, the overall illumination range of the vehicle is widened. Furthermore, the position of the light source module 200 above the first optical axis 102 ensures that the projected pattern or image is formed on the ground.

[0178] In another embodiment, the right headlight is the main headlight, and the center of the light source module 200 is located at the upper left of the first optical axis 102. This arrangement causes the emission field of view 700 corresponding to the light source module 200 to be deflected to the right, thus widening the illumination range of the right front of the vehicle. While the illumination field of view of the left headlight remains unchanged, the illumination range of the entire vehicle is widened. Furthermore, the position of the light source module 200 above the first optical axis 102 ensures that the projected pattern or image is formed on the ground.

[0179] Figure 33 This is a flowchart of a vehicle headlight control method according to an embodiment of the present invention. The vehicle headlight involved in the vehicle headlight control method of this embodiment is, for example, the headlight 10 described in any of the above embodiments of the present invention. This vehicle headlight has the same structure and working principle as the headlight 10, and the specific details can be found in the above description of the headlight 10.

[0180] Specifically, in this embodiment of the invention, the vehicle headlight may include a lighting module for illumination and a projection module for projection, wherein the lighting module is used to position the vehicle headlight in the illumination mode as described above, and the projection module is used to position the vehicle headlight in the projection mode as described above. It is easy to understand that the vehicle headlight provided in this embodiment of the invention is suitable for low-light scenarios, and is particularly suitable for nighttime scenarios.

[0181] Based on this, such as Figure 33 As shown, a method for controlling vehicle headlights according to an embodiment of the present invention specifically includes the following steps:

[0182] Step S1: Obtain the vehicle width while the vehicle is in motion.

[0183] In a specific embodiment, during vehicle operation, the vehicle width can be obtained, including but not limited to extracting the vehicle width from vehicle data queried and stored by the user in the vehicle's user manual, vehicle registration certificate, or the vehicle manufacturer's official website, or installing multiple ultrasonic sensors at the front or rear of the vehicle, facing to both sides, to measure the distance between the vehicle and other objects on the roadside, thereby determining the vehicle width.

[0184] Step S2: Based on the vehicle width, control the projection module to project a projection image with the same width as the vehicle in front of the vehicle to indicate whether the vehicle can pass through the current road section smoothly.

[0185] Specifically, based on the vehicle width obtained above, the projection module is controlled to project a projection image of the same width as the vehicle body in front of the vehicle to indicate whether the vehicle can pass through the current road section smoothly. For example, when the projection image is complete, it indicates that the vehicle can pass; when the projection image is incomplete, it prompts the driver to drive cautiously, thereby helping the driver avoid risky driving on unsuitable road sections and reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by this invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to improve the overall technological and intelligent feel of the vehicle.

[0186] Specifically, the specific structure and working principle of the vehicle headlights and projection module are detailed above and will not be repeated here. Thus, in the vehicle headlight control method of this embodiment, when projection is needed, the light source module 200 can be controlled to enter projection mode. Specifically, the projection module can be turned on, causing the light source module 200 to operate in projection mode, thereby projecting the desired pattern to achieve vehicle projection. On the other hand, when illumination is needed, the light source module 200 can be controlled to enter illumination mode. Specifically, the illumination module can be turned on, causing the light source module 200 to operate in illumination mode, thereby providing illumination light to achieve vehicle illumination.

[0187] Therefore, according to the vehicle headlight control method of the present invention, during vehicle operation, the projection module can project a projection image with the same width as the vehicle body in front of the vehicle based on the vehicle body width, thereby determining the vehicle's passability and helping the driver avoid risky driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0188] In one embodiment of the invention, the projected image includes a projected beam along the vehicle's travel direction.

[0189] In a specific embodiment, the projected image includes a projected beam along the vehicle's direction of travel, and the width of the projected beam matches the actual width of the vehicle. This allows the driver to clearly see the width of the road surface occupied by the vehicle at its current position by projecting a beam of the same width as the vehicle body onto the ground. Simultaneously, as the vehicle moves, the projected beam can move accordingly to ensure that it remains in the vehicle's direction of travel, thereby helping the driver to more accurately judge the vehicle's passability when approaching narrow sections of road or obstacles.

[0190] Specifically, by projecting a beam of light along the vehicle's direction of travel, the vehicle's passability can be determined, helping the driver avoid taking risks on unsuitable road sections, thereby reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by this invention not only solves the problem of poor lighting effect of traditional headlights at night or in poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0191] In one embodiment of the present invention, the projection beam is a monochromatic projection beam.

[0192] In a specific embodiment, the projection beam is a monochromatic projection beam, that is, throughout the entire projection process, the projection beam is composed of light of a single color, and there is no color change or mixing.

[0193] Specifically, when the projection module projects, because the monochrome projection beam has a single color, its brightness is usually relatively stable and will not fluctuate due to color mixing, thus ensuring the clarity and stability of the projection effect. At the same time, from the perspective of equipment cost and maintenance, monochrome projection is relatively simple. It does not require the use of multiple color channels (usually the three primary colors of red, green, and blue) for color synthesis, which means that it does not require a complex color management and correction system, thereby reducing the manufacturing cost of the equipment and reducing the difficulty and cost of maintenance.

[0194] In one embodiment of the present invention, the monochromatic projection beam is a white projection beam.

[0195] In a specific embodiment, the monochromatic projection beam is a white projection beam, that is, the beam emitted by the projection module is composed of white light. White light has high brightness and good visibility. Specifically, white light is usually composed of a combination of multiple colors, and its brightness is stronger than that of other single-color light. It is easier to see under various conditions. In addition, white light has good visibility both day and night, and its effect will not be significantly reduced due to changes in ambient light. It is easy for drivers and other road users to identify.

[0196] Therefore, by setting the monochromatic projection beam to a white projection beam, when the projection module projects a projection image with the same width as the vehicle body in front of the vehicle, the driver can more intuitively judge the vehicle's passability, helping the driver avoid risky driving on unsuitable road sections, thereby reducing the risk of accidents caused by misjudgment. At the same time, the headlight control method provided by this invention not only solves the problem of poor lighting effect of traditional headlights at night or in poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0197] In one embodiment of the present invention, the projected image includes two parallel projection lines, the width between the two projection lines being the same as the width of the vehicle body.

[0198] Specifically, the projected image includes two parallel projection lines corresponding to the vehicle body, and the width between the two projection lines is the same as the width of the vehicle body. This can be used to represent the width of the road surface occupied by the vehicle at its current position, so as to provide the driver with a clear and intuitive visual framework during vehicle movement to assess the vehicle's passability. For example, if the vehicle can pass through the road section ahead, then the two projection lines in the projected image will also be able to be completely laid on the ground without any interruption or overlap.

[0199] In one embodiment of the present invention, the method for controlling vehicle headlights further includes: if the width of the projected image is less than or equal to the width of the current road segment, and the projected image does not exceed any edge line of the current road segment, then outputting a prompt message indicating that the vehicle can pass through the current road segment smoothly.

[0200] Specifically, during vehicle operation, the vehicle's sensor system (such as cameras, radar, lidar, etc.) can capture the width of the current road segment and the position of the road edge in real time and compare them with the projected image. When the width of the projected image is less than or equal to the width of the current road segment and the projected image is completely within the road edge, it indicates that the vehicle can safely and smoothly pass through the current road segment. At this time, the vehicle can output a prompt message to the driver that the vehicle can smoothly pass through the current road segment through the instrument panel display, head-up display system, or voice prompts, thereby improving the safety of vehicle operation.

[0201] In one embodiment of the present invention, the method for controlling vehicle headlights further includes: if the width of the projected image is greater than the width of the current road segment, and / or the projected image exceeds any edge line of the current road segment, then outputting a prompt message indicating that the vehicle cannot pass through the current road segment smoothly.

[0202] Specifically, during vehicle operation, the vehicle's sensor system (such as cameras, radar, and lidar) can capture the width of the current road segment and the position of the road edge in real time, and compare this with the width of the projection image of the vehicle's headlights onto the road surface. When the width of the projection image is greater than the width of the current road segment, or when the projection image exceeds either edge of the current road segment, or when the width of the projection image is greater than the width of the current road segment and exceeds either edge of the current road segment, it indicates that the vehicle cannot safely and smoothly pass through the current road segment, meaning there is a safety hazard when the vehicle passes through the road ahead. At this time, the vehicle can output a warning message to the driver through the instrument panel display, head-up display system, or voice prompts, reminding the driver to take appropriate driving measures, such as slowing down, stopping, or finding an alternative route, thereby improving the safety of vehicle operation.

[0203] In summary, by comparing the projected image with the current road information, drivers can more intuitively determine the vehicle's passability, helping them avoid taking risks on unsuitable road sections and thus reducing the risk of accidents caused by misjudgment. At the same time, the headlight control method provided by this invention not only solves the problem of poor lighting effect of traditional headlights at night or in poor visibility conditions, but also provides drivers with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0204] Therefore, according to the vehicle headlight control method provided in the embodiments of the present invention, during vehicle operation, the projection module can project a projection image with the same width as the vehicle body in front of the vehicle based on the vehicle body width, thereby judging the vehicle's passability and helping the driver avoid risky driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0205] In the vehicle headlight control method of this invention, by reasonably limiting the maximum field of view and entrance pupil diameter of the lens structure 110, the relationship between the focal length and the maximum field of view of the lens structure 110 is coordinated. This allows the lens structure 110 to meet the requirements of large image plane and high-quality imaging, while also ensuring sufficient image plane brightness at the edge of the field of view by controlling the entrance pupil diameter. This prevents the entrance pupil diameter from being too small, which would be detrimental to the improvement of the large aperture lens structure 110 and the image plane brightness. At the same time, it can prevent the entrance pupil diameter from being too large, thereby reducing the astigmatism of the light beam at the edge of the field of view and improving the quality of the projected image during projection.

[0206] Furthermore, the light source module 200 can include multiple micron-sized light-emitting points, each of which can be independently controlled. The emission mode of the light-emitting points can be adjusted according to different operating modes. For example, in illumination mode, all light-emitting points can be controlled to emit white light to maximize illumination brightness. In projection mode, only some light-emitting points can be controlled to emit light, thus projecting specific patterns. It is understandable that if the light-emitting points in each light source module 200 consist of red, green, and blue light-emitting points, then various colors of light can be modulated through color combinations, and combined with existing display technologies, dynamic images can be projected.

[0207] A further embodiment of the present invention discloses a control device for vehicle headlights. As described above, the vehicle headlights involved include a lighting module for illumination and a projection module for projection. The lighting module is used to put the vehicle headlights in the lighting mode as described above, and the projection module is used to put the vehicle headlights in the projection mode as described above. It is easy to understand that the vehicle headlights provided by the embodiments of the present invention are suitable for scenes with low light, and are particularly suitable for nighttime scenes.

[0208] Figure 34 This is a structural block diagram of a vehicle headlight control device according to an embodiment of the present invention, such as... Figure 34 As shown, the headlight control device 1000 of the vehicle includes: an acquisition module 1001 and a control module 1002.

[0209] Specifically, the acquisition module 1001 is used to acquire the vehicle width when the vehicle is in motion.

[0210] The control module 1002 is used to control the projection module to project a projection image with the same width as the vehicle body in front of the vehicle, based on the vehicle body width, so as to indicate whether the vehicle can pass through the current road section smoothly.

[0211] In one embodiment of the invention, the projected image includes a projected beam along the vehicle's travel direction.

[0212] In one embodiment of the present invention, the projection beam is a monochromatic projection beam.

[0213] In one embodiment of the present invention, the monochromatic projection beam is a white projection beam.

[0214] In one embodiment of the present invention, the projected image includes two parallel projection lines, the width between the two projection lines being the same as the width of the vehicle body.

[0215] In one embodiment of the present invention, if the width of the projected image is less than or equal to the width of the current road segment, and the projected image does not exceed any edge line of the current road segment, then a prompt message indicating that the vehicle can pass through the current road segment smoothly is output.

[0216] In one embodiment of the present invention, if the width of the projected image is greater than the width of the current road segment, and / or the projected image exceeds any edge line of the current road segment, a prompt message indicating that the vehicle cannot pass through the current road segment smoothly is output.

[0217] It should be noted that the vehicle headlight control device 1000 of this embodiment controls the vehicle headlights in a manner similar to the specific implementation of the vehicle headlight control method described in any of the above embodiments of this invention. For details, please refer to the description in the method section. To reduce redundancy, it will not be repeated here.

[0218] According to the vehicle headlight control device 1000 of the present invention, the vehicle headlight control method of the above embodiment of the present invention is implemented. During the vehicle's operation, the projection module can be controlled to project a projection image with the same width as the vehicle body in front of the vehicle, thereby judging the vehicle's passability and helping the driver avoid driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to improve the overall technological and intelligent feel of the vehicle.

[0219] A further embodiment of the present invention also discloses a vehicle.

[0220] In some embodiments, the vehicle includes a headlight control device 1000 as described in any of the above embodiments of the present invention.

[0221] In other embodiments, the vehicle includes a processor, a memory, and a vehicle headlight control program stored in the memory and executable on the processor. When executed by the processor, the vehicle headlight control program implements the vehicle headlight control method as described in any of the above embodiments of the present invention.

[0222] In a specific embodiment, the vehicle can be any one of a pure electric vehicle, a gasoline-powered vehicle, or a hybrid vehicle.

[0223] According to an embodiment of the present invention, the vehicle headlight control method of the above embodiment of the present invention is implemented. During the vehicle's operation, the projection module can project a projection image with the same width as the vehicle body in front of the vehicle based on the vehicle body width, thereby determining the vehicle's passability and helping the driver avoid driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0224] A further embodiment of the present invention discloses a computer-readable storage medium storing a vehicle headlight control program, which, when executed by a processor, implements the vehicle headlight control method as described in any of the above embodiments of the present invention.

[0225] According to an embodiment of the present invention, when a computer-readable storage medium storing a vehicle headlight control program thereon is executed by a processor, it implements the vehicle headlight control method of the above-described embodiment of the present invention. During vehicle operation, the projection module can be controlled to project a projection image with the same width as the vehicle body in front of the vehicle, thereby determining the vehicle's passability and helping the driver avoid driving on unsuitable road sections, thus reducing the risk of accidents caused by misjudgment. At the same time, the vehicle headlight control method provided by the present invention not only solves the problem of poor lighting effect of traditional headlights at night or under poor visibility conditions, but also provides the driver with more intuitive and accurate visual assistance, which helps to enhance the overall technological and intelligent feel of the vehicle.

[0226] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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 the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0227] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A control method of a vehicle headlamp, characterized by, The vehicle headlamp comprises an illuminating module for illumination and a projecting module for projection, and a control method of the vehicle headlamp comprises: acquiring a vehicle body width when the vehicle is running; controlling the projecting module to project a projection image with a width equal to the vehicle body width in front of the vehicle running to indicate whether the vehicle can smoothly pass through a current road section based on the vehicle body width.

2. The control method of a vehicle headlamp according to claim 1, characterized by The projection image comprises a projection light beam in the running direction of the vehicle.

3. The control method of the vehicle headlamp according to claim 2, characterized by The projection light beam is a monochromatic projection light beam.

4. The control method of a vehicle headlamp according to claim 3, characterized by The monochromatic projection light beam is a white projection light beam.

5. The control method of a vehicle headlamp according to claim 1, characterized by The projection image comprises two parallel projection lines, and the width between the two projection lines is the same as the vehicle body width.

6. The control method of a vehicle headlamp according to claim 1, characterized by Further comprising: if the width of the projection image is less than or equal to the width of the current road section, and the projection image does not exceed any edge line of the current road section, outputting prompt information that the vehicle can smoothly pass through the current road section.

7. The control method of a vehicle headlamp according to claim 1, characterized by Further comprising: if the width of the projection image is greater than the width of the current road section, and / or the projection image exceeds any edge line of the current road section, outputting prompt information that the vehicle cannot smoothly pass through the current road section.

8. A control device for a vehicle headlamp, characterized by comprising: The vehicle headlamp comprises an illuminating module for illumination and a projecting module for projection, and a control device of the vehicle headlamp comprises: an acquisition module for acquiring a vehicle body width when the vehicle is running; a control module for controlling the projecting module to project a projection image with a width equal to the vehicle body width in front of the vehicle running to indicate whether the vehicle can smoothly pass through a current road section based on the vehicle body width.

9. A vehicle characterized by comprising: comprising: the control device of the vehicle headlamp according to claim 8, or a processor, a memory, and a control program of a vehicle headlamp stored on the memory and executable on the processor, the control program of the vehicle headlamp being executed by the processor to implement the control method of the vehicle headlamp according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a control program of a vehicle headlamp, and the control program of the vehicle headlamp is executed by a processor to implement the control method of the vehicle headlamp according to any one of claims 1-7.

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