阅读说明：本技术 一种车辆前照灯 (Vehicle headlamp ) 是由 马建设 王丽萍 苏萍 张立君 于 2019-10-18 设计创作，主要内容包括：本申请属于车辆照明技术领域,特别是涉及一种车辆前照灯。现有的智能车灯主要利用流水灯式实现近光灯的移动,机械结构比较复杂,且近光灯的移动效果不明显,在视觉上并不能很好的呈现近光灯的移动效果。本申请将菲涅尔透镜及自由曲面作为汽车前照灯近光光学处理模块。体积小,质量轻,光线输出更加均匀,能使大灯最初由凹面镜反射出来的平行光向下倾斜,除可照亮前方的路面,也可防止对于前方及对向的人车造成眩光,可以通过控制各个区域LED的亮暗使近光上下左右移动,实现智能照明。将远光灯和近光灯合二为一、体积小、机械质量更加稳定。(The application belongs to the technical field of vehicle lighting, and particularly relates to a vehicle headlamp. The removal that current intelligence car light mainly utilized the flowing water lamp formula to realize the passing lamp, mechanical structure is more complicated, and the removal effect of passing lamp is not obvious, can not be fine in the vision present the removal effect of passing lamp. Fresnel lens and free curved surface are regarded as vehicle headlamps low beam optical processing module in this application. The novel LED headlight has the advantages that the novel LED headlight is small in size, light in weight and more uniform in light output, parallel light reflected by the concave mirror initially can be inclined downwards, the novel LED headlight can illuminate the road in front, glare to people and vehicles in front and opposite directions can be prevented, the passing light can be moved up and down and left and right by controlling the brightness of LEDs in all regions, and intelligent lighting is achieved. The high beam and the dipped headlight are combined into a whole, the size is small, and the mechanical quality is more stable.)

1. A vehicle headlamp characterized in that: the device comprises a light source control unit, a light source unit and an optical processing unit which are connected in sequence;

the utility model discloses a LED light source control unit, including light source control unit, light source unit includes the LED module, light source control unit (1) with the LED module is connected, light source control unit (2) with the LED module is connected, optical processing unit includes distance light processing module and short-distance beam processing module, distance light processing module with the LED module is connected, short-distance beam processing module is including arranging in proper order short-distance beam fresnel lens (4), free curved surface (5) and first achromatic patch (6), distance light processing module is including arranging in proper order long-distance beam fresnel lens (7), diffraction optical element (8) and second achromatic patch (9).

2. The vehicle headlamp of claim 1, wherein: the LED module comprises a plurality of LED light sources (3) and an LED heat dissipation assembly (10).

3. The vehicle headlamp of claim 2, wherein: the LED light source is an LED, a miniLED or a micro LED.

4. The vehicle headlamp of claim 1, wherein: the LED heat dissipation assembly (10) is a heat radiator, and the heat radiator is arranged on the back of the LED light source.

5. The vehicle headlamp of claim 2, wherein: the light source control unit can independently control the on and off of each LED in the light source unit, so that various shapes can be projected.

6. The vehicle headlamp according to any one of claims 1 to 5, wherein: the high beam Fresnel lens (7) is used for condensing high beam LEDs, and the low beam Fresnel lens (4) is used for condensing low beam LEDs.

7. The vehicle headlamp of claim 6, wherein: the near light control module (1) can control the brightness of the LEDs in each area to enable the near light to move up, down, left and right.

Technical Field

The application belongs to the technical field of vehicle lighting, and particularly relates to a vehicle headlamp.

Background

With the advancement of science and technology, drivers have more expectations on the performance of automotive headlamps. The automobile headlamp is a lamp which can normally run in a dark room. Because it is installed in the front both sides of car, not only influence the outward appearance image of car, still influence the driving safety under night driving or bad weather condition. The main characteristic of the road traffic accident is that the proportion of the road traffic accident at night is obviously increased and accounts for more than 40 percent of the total number of the road traffic accidents. The headlamp is a key part influencing the driving safety of the automobile in the dark. Night driving causes night death due to poor eyesight, and accounts for more than 70% of the whole road traffic accidents, and the number of accident deaths accounts for more than half. Therefore, the improvement of the lighting effect of the automobile headlamp has important social significance for guaranteeing the driving safety at night and improving the driving comfort at night. The high luminous flux, small volume and low power consumption are important characteristics in the design of the automobile headlamp and the intelligent headlamp.

Automobile headlamps have undergone the development stages of kerosene lamps, acetylene lamps, and electric light source lamps. The main light sources of the existing automobile headlamps mainly comprise four types, namely halogen lamps, xenon lamps and lasers. The halogen lamp emits light with yellow color, and has the greatest defects that the brightness is low because the filament is used for emitting light, a delay time exists when the xenon headlamp is started, a strong current can be generated at the starting moment to impact an electrode, the xenon headlamp is brighter than the halogen headlamp, but is more easily polluted by light, and the penetration capability in rainy days is poor. Compared with the traditional halogen headlamp and xenon headlamp, the LED headlamp has the advantages of small size, long service life, high reliability, strong stability and short starting time.

The conventional LED headlamp mainly uses a conventional hemispherical surface or an ellipsoidal surface to perform dipped headlight light condensation, and because the conventional hemispherical surface or the ellipsoidal surface has a fixed formula, when a system needs to adjust local light distribution, the change of any parameter of a curved surface can cause the change of the overall shape, so that the local adjustment of light energy is difficult to realize. The conventional hemispherical surface or ellipsoidal surface has large volume and heavy weight due to fixed volume.

At present, a vehicle headlamp mainly adopts a mode of electromagnetically attracting a light barrier to realize the switching of a high beam and a low beam, but has the problems of complex mechanical structure, various parts, high cost, long mechanical deflection reaction time, temperature influence on the electromagnetic environment and the like. The removal that current intelligence car light mainly utilized the flowing water lamp formula to realize the passing lamp, mechanical structure is more complicated, and the removal effect of passing lamp is not obvious, can not be fine in the vision present the removal effect of passing lamp.

Disclosure of Invention

1. Technical problem to be solved

Based on at present, the vehicle headlamp mainly adopts the mode of electromagnetic attraction barn door to realize the switching of high beam and dipped headlight, but mechanical structure is complicated, spare part is various, and is with high costs, has mechanical type moreover to deflect that reaction time is long, electromagnetic environment receives the temperature influence scheduling problem. The removal that the dipped headlight was realized to current intelligence car light mainly utilizes the flowing water lamp formula, and mechanical structure is more complicated, and the removal effect of dipped headlight is not obvious, can not be fine in the vision present the problem of the removal effect of dipped headlight, and this application provides a vehicle headlamps.

2. Technical scheme

In order to achieve the above object, the present application provides a vehicle headlamp including a light source control unit, a light source unit, and an optical processing unit, which are connected in sequence;

the light source control unit includes low beam control module and distance light control module, the light source unit includes the LED module, the low beam control module with the LED module is connected, the distance light control module with the LED module is connected, the optics processing unit includes distance light processing module and short-distance beam processing module, distance light processing module with the LED module is connected, short-distance beam processing module is including the short-distance beam fresnel lens, free curved surface and the first achromatic piece that arrange in proper order, distance light processing module is including the high beam fresnel lens, diffraction optical element and the second achromatic piece that arrange in proper order.

The present application provides another embodiment: the LED module comprises a plurality of LED light sources and an LED heat dissipation assembly.

The present application provides another embodiment: the LED light source is an LED, a miniLED or a micro LED.

The present application provides another embodiment: the LED heat dissipation assembly is a heat radiator, and the heat radiator is arranged on the back of the LED light source.

The present application provides another embodiment: the light source control unit can independently control the on and off of each LED in the light source unit, so that various shapes can be projected.

The present application provides another embodiment: the far-beam Fresnel lens is used for condensing the far-beam LED, and the near-beam Fresnel lens is used for condensing the near-beam LED.

The present application provides another embodiment: the near light control module can control the brightness of the LEDs in each area to enable the near light to move up, down, left and right.

3. Advantageous effects

Compared with the prior art, the beneficial effect of the vehicle headlamp that this application provided lies in:

the application provides a vehicle headlamps, regard fresnel lens and free curved surface as vehicle headlamps low beam optical processing module. The novel LED headlight has the advantages that the novel LED headlight is small in size, light in weight and more uniform in light output, parallel light reflected by the concave mirror initially can be inclined downwards, the novel LED headlight can illuminate the road in front, glare to people and vehicles in front and opposite directions can be prevented, the passing light can be moved up and down and left and right by controlling the brightness of LEDs in all regions, and intelligent lighting is achieved. The high beam and the dipped headlight are combined into one, the size is small, and the mechanical quality is more stable.

The application provides a pair of vehicle headlamps carries out the modularized design with the synthetic an organic whole of far-reaching headlamp and dipped headlight, has not only reduced work load, design cycle and the cost of design, and the structure is light and handy moreover, the design degree of freedom is high, is favorable to the optimal design and the comprehensive utilization of energy of light path.

The application provides a pair of vehicle headlamps, its low beam and distance light source adopt the LED light source to the light source is certain combination emission, and light source control unit obtains different light distributions through opening and closing of controlling each LED, and the radiator is located the LED back for LED dispels the heat, guarantees that LED normally works. The dipped beam light source forms parallel beams through the Fresnel lens, the light distribution is uniform, the parallel beams project dipped beam light types required by national standards through the free curved surface, and finally the dipped beam light of the automobile headlamp is formed by eliminating dispersion through the light dispersion sheet. The high beam light source forms a light condensing beam through the Fresnel lens, and then the light is dispersed by the DOE and the light dispersion sheet to form the high beam of the automobile headlamp. The light output is more uniform, the parallel light reflected by the concave mirror from the headlamp is inclined downwards, the front road surface can be illuminated, glare to people and vehicles in front and opposite can be prevented, the passing light control system is used for controlling the brightness of the LEDs in each area to enable the passing light to move up and down and left and right, and when the vehicle runs on an uphill, the upper LEDs are turned on to enable the passing light to move upwards; when the vehicle runs on a downhill, the lower LED is turned on, so that the dipped headlight moves downwards; when the vehicle runs in a left turn, the left LED is turned on, so that the dipped headlight moves leftwards; when the vehicle runs to the right, the right LED is turned on, so that the dipped headlight moves to the right; and intelligent illumination is realized.

Drawings

FIG. 1 is a schematic structural view of a vehicle headlamp of the present application;

in the figure: the LED light source comprises a near light control module 1, a far light control module 2, an LED light source 3, a near light Fresnel lens 4, a free-form surface 5, a first achromatic sheet 6, a far light Fresnel lens 7, a diffractive optical element 8, a second achromatic sheet 9 and an LED heat dissipation assembly 10.

Detailed Description

Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, and it will be apparent to those skilled in the art from this detailed description that the present application can be practiced. Features from different embodiments may be combined to yield new embodiments, or certain features may be substituted for certain embodiments to yield yet further preferred embodiments, without departing from the principles of the present application.

Diffractive Optical Elements (DOEs) feature precise control of the light intensity distribution while maintaining high diffraction efficiency, and therefore DOEs become an ideal element for off-axis illumination. Generally, the number of sub-units of a DOE for off-axis illumination of a lithography system needs to be less than 10, the design data volume is large, and the unit size reaches micron or even submicron order.

Referring to fig. 1, the present application provides a vehicle headlamp including a light source control unit, a light source unit, and an optical processing unit, which are sequentially connected;

the light source control unit includes near light control module 1 and distance light control module 2, the light source unit includes the LED module, near light control module 1 with the LED module is connected, far light control module 2 with the LED module is connected, the optics processing unit includes distance light processing module and near light processing module, far light processing module with the LED module is connected, near light processing module is including near light fresnel lens 4, free curved surface 5 and the first achromatic piece 6 that arrange in proper order, far light processing module is including far light fresnel lens 7, diffraction optical element 8 and the second achromatic piece 9 that arrange in proper order.

The free-form surface 5 can be designed into various shapes according to actual requirements.

Further, the LED module comprises a number of LED light sources 3 and a LED heat sink assembly 10.

Further, the LED light source is an LED, a miniLED or a micro LED.

Further, the LED heat dissipation assembly 10 is a heat sink, and the heat sink is disposed on the back of the LED light source.

Further, the light source control unit may individually control the turning on and off of each LED in the light source unit, thereby projecting various shapes.

Further, the high beam fresnel lens 7 is used for condensing the high beam LED, and the low beam fresnel lens 4 is used for condensing the low beam LED.

Furthermore, the near light control module 1 can control the brightness of the LEDs in each area to enable the near light to move up, down, left and right, and intelligent illumination is achieved.