WO2023015531A1

WO2023015531A1 - Vehicle pixelated lighting device, vehicle lamp, and vehicle

Info

Publication number: WO2023015531A1
Application number: PCT/CN2021/112340
Authority: WO
Inventors: 严梦; 李辉; 仇智平; 刘方; 金朗润; 董世琨; 祝贺; 桑文慧
Original assignee: 华域视觉科技(上海)有限公司
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2023-02-16
Also published as: CN116888400A; EP4290127A1

Abstract

A vehicle pixelated lighting device, a vehicle lamp, and a vehicle. The vehicle pixelated lighting device comprises a pixel lighting light source (10), a light-transmitting element (30) and a lens assembly (20). The pixel lighting light source (10) is provided with an integral light-emitting surface (11). The light-transmitting element (30) is arranged at the edge of the pixel lighting light source (10) and covers at least a part of the edge of the integral light-emitting surface (11) of the pixel lighting light source (10). The light-transmitting element (30) is used to change the deflection angle of a light ray emitted from the pixel lighting light source (10) into the light-transmitting element (30), and to emit a polarization light ray to the lens assembly (20). The intersection of the reverse extension line of the polarization light ray and the plane of the integral light-emitting surface (11) is located outside of the light-emitting point of an incident light corresponding to the polarization light ray. The part of light entering the light-transmitting element (30) is directed at a point away from the outside of a pixelated light shape center point by means of the light-transmitting element (30), thereby achieving blurring of an pixelated light-shape edge, such that the pixelated light shape has a soft transition at the blurring edge thereof, and finally, after the pixelated light shape and the non-pixelated light shape are superposed, the transition is uniform at the superposition edge, and the connectivity is good.

Description

A vehicle pixelated lighting device, a vehicle light and a vehicle

technical field

The present invention relates to the field of vehicle lighting, in particular to a vehicle pixelized lighting device, a vehicle lamp containing the vehicle pixelized lighting device, and a vehicle containing the vehicle lamp.

Background technique

In recent years, pixelated lighting devices have been used more and more in the technical field of vehicle lamps. In actual use, a pixelated lighting device for forming a pixelated light shape and a lighting device (such as a matrix lighting device) for forming a non-pixelated light shape are superimposed, that is, a pixelated light shape and a non-pixelated light shape Shape overlay, both have a certain overlay area and overlay boundary.

Further, the superimposed light shape of the pixelated light shape and non-pixelated light shape of the headlight in the high beam lighting mode is shown in Figure 1, and the pixelated light shape and non-pixelated light shape of the headlight in the low beam lighting mode The superimposed light shape of the shape is shown in Figure 2. In Figure 1 and Figure 2, area a is a pixelated light shape, area b is a non-pixelated light shape, and c is the superimposed boundary of a pixelated light shape and a non-pixelated light shape; in addition, in Figure 2, d is a low beam The cutoff line is formed by the pixelated light shape area passing through several areas of light and dark.

Furthermore, the pixelated light shape is shown in FIG. 3 , and the simulated road surface light shape formed by superimposing the pixelated light shape and the non-pixelated light shape is shown in FIG. 4 . In FIG. 3 and FIG. 4 , the area a1 is the pixelated light shape, and the area c1 is the overlapping boundary of the pixelated light shape and the non-pixelated light shape, that is, the lower boundary area of the pixelated light shape. It can be seen from Figure 3 and Figure 4 that the boundary of the pixelized light shape formed by the current pixelated lighting device is too sharp, so that after it is superimposed with the non-pixelated light shape, the transition at the superimposed boundary is uneven and the cohesion is poor, causing the driver Visual fatigue, resulting in driving safety hazards.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a pixelated lighting device for vehicles, which can blur the boundary of the pixelated light shape, so that after superimposing it with the non-pixelated light shape, the transition at the superimposed boundary is uniform , Good coherence.

In order to achieve the above object, the present invention provides a vehicle pixelized lighting device, which includes a pixel lighting source and a lens group arranged in sequence along the light emitting direction, the pixel lighting source has an integral light-emitting surface facing the lens group; the vehicle pixelated lighting The device also includes a light-transmitting element fixed between the pixel illuminating light source and the lens group, the light-transmitting element is arranged at the boundary of the pixel illuminating light source, and at least covers part of the boundary of the overall light-emitting surface of the pixel illuminating light source; The light-transmitting element has a light-incident surface facing the pixel illumination source and a light-emitting surface facing the lens group; the light-transmitting element is used to change the deflection angle of the light entering the pixel illumination light source, and enter the lens group The deflected light, the intersection point of the reverse extension line of the deflected light and the plane where the overall light-emitting surface is located is located outside the light-emitting point of the incident light corresponding to the deflected light.

Further, the light-transmitting element covers the upper boundary of the entire light-emitting surface of the pixel illumination light source.

Further, the light-transmitting element covers a whole boundary of the entire light-emitting surface of the pixel illumination light source.

Further, the light-transmitting element is a silicone part.

Further, the light-emitting surface of the light-transmitting element has at least one of an arc-shaped section, a vertical plane section, a horizontal plane section, and an inclined plane section.

Further, the light incident surface of the light-transmitting element has at least one of an arc-shaped section, a vertical plane section, a horizontal plane section, and an inclined plane section.

Further, the distance between the pixel illumination light source and the light-transmitting element is less than or equal to 0.5 mm.

Further, the lens group includes a first lens, a second lens and a third lens arranged in sequence along the light emitting direction, the first lens is a lens with positive refractive power, and the second lens is a lens with negative refractive power The third lens is a lens with positive refractive power.

Further, the Abbe numbers of the first lens and the third lens are larger than the Abbe number of the second lens.

Further, the material of the first lens is optical glass, the material of the second lens is PC, and the material of the third lens is PMMA.

Further, the vehicle pixelated lighting device also includes a lens holder, a circuit board and a heat sink, the first lens, the second lens and the third lens are installed in the lens holder, and the pixel illumination light source is installed on the circuit board Above, the heat sink, the circuit board and the lens bracket are fixedly connected in sequence along the light emitting direction, and the light-transmitting element is fixed on the lens bracket or the circuit board.

Further, the vehicle pixelated lighting device also includes a first limiting ring and a second limiting ring both arranged in the lens bracket, and a beam limiting element screwed to one end of the lens bracket, the lens The other end of the bracket is provided with a first limiting part, and the inner wall is provided with a second limiting part and a third limiting part, and the outer peripheral surfaces of the first lens, the second lens and the third lens are all abutted against the lens On the inner wall of the bracket, the first lens is limited between the first limiting part and the first limiting ring, and the second lens is limited between the second limiting part and the second limiting ring , the third lens is limited between the third limiting portion and the light beam limiting element.

Further, the beam limiting member is an aperture stop.

The present application also provides a vehicle lamp, in which the vehicle pixelated lighting device as described above is arranged.

The present application further provides a vehicle, which is equipped with the above-mentioned vehicle light.

As mentioned above, the vehicle pixelated lighting device, vehicle lamp and vehicle involved in the present invention have the following beneficial effects:

In the present application, a light-transmitting element covering at least part of the boundary of the pixel illumination light source is provided to change the deflection angle of the part of the light entering the light-transmitting element, so that this part of the light is deflected relative to the original, forming a deflection The light enters the lens group, and the intersection point of the reverse extension line of the deflected light and the plane where the overall light-emitting surface is located is located outside the light-emitting point of the deflected light corresponding to the incident light, so the exit angle of this part of light after passing through the lens group becomes larger , thereby realizing that the light-transmitting element makes the part of the light incident into it extend directionally to the outside away from the center of the pixelated light shape, thereby realizing the virtualization of the boundary of the pixelated light shape, so that the pixelated light shape is in its The transition at the blurred boundary is soft, which finally makes the pixelated light shape and non-pixelated light shape superimposed at the superimposed boundary with uniform transition and good cohesion. In addition, the present application blurs the boundary of the pixelized light shape through the light-transmitting element, and the light-transmitting element does not block light, so light energy is not lost, and the utilization rate of light energy is improved.

Description of drawings

FIG. 1 is a schematic diagram of the light shape of a vehicle lamp provided with a pixelated lighting device for a conventional vehicle in a high beam lighting mode.

FIG. 2 is a schematic diagram of the light shape of a vehicle lamp provided with a pixelated lighting device for a conventional vehicle in a low beam lighting mode.

FIG. 3 is a schematic diagram of a conventional pixelated light shape with a low beam cut-off line.

FIG. 4 is a schematic diagram of a simulated road surface light shape after the existing pixelated light shape and non-pixelated light shape are superimposed.

FIG. 5 is a schematic structural diagram of a pixelated lighting device for a vehicle in the present application.

FIG. 6 is an exploded view of FIG. 5 , in which the light-transmitting element is omitted.

FIG. 7 is a cross-sectional view of FIG. 5 .

Fig. 8 is a schematic diagram of assembly of a pixel illumination light source, a lens group, a light-transmitting element and a lens holder in the pixelized vehicle lighting device of the present application.

FIG. 9 is a schematic diagram of assembly of a pixel illumination light source, a lens group and a light-transmitting element in the vehicle pixelized illumination device of the present application.

FIG. 10 is a schematic structural diagram of a pixel illumination light source in the present application.

Fig. 11 is a schematic diagram of the assembly of the pixel illumination light source and the light-transmitting element in the present application.

FIG. 12 is a schematic structural diagram of a light-transmitting element in the present application.

13a to 13c are cross-sectional views of different embodiments of the light-transmitting element in this application.

FIG. 14 is a sectional view of FIG. 11 .

FIG. 15 is a schematic diagram of propagation of light at the upper boundary of the pixel illumination light source in FIG. 14 after being deflected by the light-transmitting element.

Fig. 16 is an imaging diagram on the light distribution screen when a single light-emitting unit is turned on and no light-transmitting element is provided.

Fig. 17 is an imaging diagram of a single light-emitting unit in the present application after it is lit and a light-transmitting element is set on the light distribution screen.

FIG. 18 is a schematic diagram of a pixelated light shape formed when the pixelated lighting device is not provided with a light-transmitting element.

FIG. 19 is a schematic diagram of a pixelated light shape formed after a pixelated lighting device for a vehicle in the present application is provided with a light-transmitting element at the boundary of a full circle of the pixel lighting light source.

FIG. 20 is a schematic diagram of a pixelated light shape with a low beam cut-off line in the present application.

FIG. 21 is a schematic diagram of the simulated road surface light shape after superimposing the pixelated light shape and the non-pixelated light shape in the present application.

Component designation description

10 pixel lighting source

11 Overall luminous surface

12 Lighting unit

20 lens group

21 First lens

22 Second lens

23 Third lens

231 Lens flanging structure

30 Light-transmitting components

31 Curved surface segment

32 Vertical section

33 Horizontal section

34 Inclined plane section

40 Lens Holder

41 The first limiting part

42 Second limit part

43 The third limit part

50 circuit board

60 Radiator

70 The first limit ring

80 Second limit ring

90 Beam limiting element

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, there is no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure of the present invention without affecting the functions and objectives of the present invention. within the scope of technical content. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for convenience of description and are not used to limit the present invention. The practicable scope, the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the present invention.

In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The features of "first", "second", and "third" may expressly or implicitly include one or more of said features.

The present application provides a vehicle, the vehicle is equipped with a vehicle light, and the vehicle light may be a vehicle headlight or a vehicle rear light; further, the vehicle light is equipped with a vehicle pixelated lighting device for forming a pixelated light shape. For the convenience of description, in the following embodiments, the light output direction of the vehicle pixelized lighting device is defined as the front direction, that is, the light source in the vehicle pixelized lighting device emits light forward, and the vehicle pixelized lighting device forms a pixelated light shape.

In addition, in the following examples, "dispersion" refers to the property that the refractive index of the material changes with the frequency of the incident light. For example, white light consists of seven monochromatic lights: red, orange, yellow, green, blue, indigo, and purple. , because the above-mentioned seven kinds of monochromatic light have different refractive indices, white light will be dispersed into the above-mentioned seven colors after refraction. The degree of dispersion is generally related to the structure of the lens and the material of the lens. The short-wave dispersion is inward and the long-wave dispersion is outward, while the short-wave dispersion of the negative focal power lens is outward and the long-wave dispersion is inward. Therefore, the combination of the two can offset and correct the dispersion; "chromatic aberration" refers to chromatic aberration. When white light is used for imaging, different monochromatic lights have different refractive indices to cause dispersion, so that different monochromatic lights have different propagation paths, thus presenting aberrations caused by differences in the optical paths of different monochromatic lights.

As shown in FIG. 5 and FIG. 6, and FIG. 8 and FIG. 9, the vehicle pixelated lighting device provided by the present application includes a pixel lighting source 10, a light-transmitting element 30 and a lens group 20 arranged in sequence from back to front along the light emitting direction, Then the light-transmitting element 30 is fixed between the pixel illuminating light source 10 and the lens group 20, and the light emitted forward by the pixel illuminating light source 10 can form a pixelated light shape after passing through the lens group 20; 10, and the light-emitting surface facing the lens group 20. As shown in FIG. 10 , the front end surface of the pixel lighting source 10 is provided with a plurality of light-emitting units 12 arranged in a matrix, and the light-emitting surfaces of the plurality of light-emitting units 12 form the overall light-emitting surface 11 of the pixel lighting source 10. The overall light-emitting surface 11 The light incident surface facing the lens group 20 and the light incident surface of the light-transmitting element 30 ; the outer edge of the pixel illumination source 10 is its boundary; the outer edge of the overall light emitting surface 11 of the pixel illumination light source 10 is its boundary.

In particular, as shown in FIG. 11 , the light-transmitting element 30 is arranged at the boundary of the pixel illumination source 10 and at least covers part of the boundary of the overall light-emitting surface 11 of the pixel illumination light source 10, then the inner edge of the light-transmitting element 30 should be located therein. This part of the overall light-emitting surface 11 covers the inner side of the inner edge. In this way, the light-transmitting element 30 can only cover the lower boundary, or the upper boundary, or the left boundary, or the right boundary of the overall light-emitting surface 11 of the pixel lighting source 10; The lower boundary and the upper boundary of the surface 11 ; or: the light-transmitting element 30 may simultaneously cover a whole boundary of the entire light-emitting surface 11 of the pixel illumination source 10 . The overall light-emitting surface 11 of the pixel illumination light source 10 emits light forward, and part of the light enters the light-transmitting element 30. This part of the light entering the light-transmitting element 30 is defined as the incident light P1, as shown in FIG. 15; pixel lighting The light source 10 emits the incident light P1 forward at one of its light-emitting points A, and the light-transmitting element 30 is used to change the deflection angle of the incident light P1 incident by the pixel illumination light source 10 and transmit the incident light P1 to the lens group 20 accordingly. The deflected ray P2 is incident; the intersection points A1 and A2 of the reverse extension line of the deflected ray P2 and the plane where the overall light-emitting surface 11 is located are located outside the light-emitting point A of the incident ray P1 corresponding to the deflected ray P2 , that is, the intersection points A1 and A2 are farther away from the center of the overall light-emitting surface 11 than the light-emitting point A.

When the light-transmitting element 30 is only arranged at the upper boundary of the pixel illuminating light source 10 and only covers the upper boundary of the overall light-emitting surface 11 of the pixel illuminating light source 10, the overall light-emitting surface 11 of the pixel illuminating light source 10 emits light forward, and the overall light-emitting surface 11 The incident light P1 emitted from the upper boundary part enters the light-transmitting element 30, as shown in Figure 15, the light-transmitting element 30 changes the deflection angle of this part of the incident light P1, and then emits the deflected light P2, and then makes this part of the deflected light P2 enters the lens group 20 . Specifically, in Fig. 15, if the light-transmitting element 30 is not installed, the two incident rays P1 emitted forward at the luminous point A respectively enter the lens group 20 along the original propagation direction S1 direction and Y1 direction, and appear on the light distribution screen. As shown in FIG. 16 , the lower boundary of the illuminated area corresponding to the upper boundary of the overall light-emitting surface 11 is not blurred. After the light-transmitting element 30 is installed in this application, the two incident light rays P1 emitted forward from the above-mentioned light-emitting point A are deflected into deflected light rays P2 after passing through the light-transmitting element 30, and the two deflected light rays P2 are respectively along the deflected The propagating directions S2 and Y2 enter the lens group 20; it can be seen from FIG. 15 that among the two incident rays P1 emitted forward at the luminous point A, the deflected ray P2 corresponding to one incident ray P1 is along the reverse direction of the S2 direction. The intersection point of the extension line and the plane where the overall light-emitting surface 11 of the pixel lighting source 10 is located is A1, and the opposite extension line along the Y2 direction of the deflected ray P2 corresponding to the other incident ray P1 is located at the point where the overall light-emitting surface 11 of the pixel lighting source 10 is located. The intersection of the planes is A2, and both points A1 and A2 are higher than the light-emitting point A, that is, both points A1 and A2 are located outside the light-emitting point A, and are farther away from the overall light-emitting surface 11 of the pixel illumination light source 10 than the light-emitting point A. center; because the lens group 20 is an inverted image, the images of point A1 and point A2 must be lower than the image of luminous point A on the screen, that is, the images of point A1 and point A2 must be located outside the image of luminous point A, so There will be light below the original spot, thus realizing blurring. The imaging on the light distribution screen after the light-transmitting element 30 is set in this application is shown in Figure 17. The lower boundary of the lighting area corresponding to the upper boundary of the overall light-emitting surface 11 has a virtual effect, and the lower boundary of this part of the lighting area Extending downward (that is, outward), the isolux lines are sparser and the light is softer.

Similarly, when the light-transmitting element 30 is only arranged at the lower boundary of the pixel illumination light source 10 and only covers the lower boundary of the overall light-emitting surface 11 of the pixel illumination light source 10, the light-transmitting element 30 deflects the light upwards, causing pixelation The light shape has light above the original light spot, which realizes the blurring of the upper boundary of the pixelated light shape. When the light-transmitting element 30 is only arranged at the left boundary of the pixel illuminating light source 10 and only covers the left boundary of the overall light-emitting surface 11 of the pixel illuminating light source 10, the light-transmitting element 30 deflects the light to the right, resulting in a pixelated light shape. There is light on the right side of the original light spot, and the blurring of the right boundary of the pixelated light shape is realized. When the light-transmitting element 30 is only arranged at the right boundary of the pixel illuminating light source 10 and covers only the right boundary of the overall light-emitting surface 11 of the pixel illuminating light source 10, the light-transmitting element 30 deflects the light to the left, resulting in a pixelated light shape. There is light on the left side of the original light spot, and the blurring of the left boundary of the pixelated light shape is realized.

Therefore, in the present application, a light-transmitting element 30 covering at least part of the boundary of the pixel illumination light source 10 is provided to change the deflection angle of the part of the light incident on the light-transmitting element 30, so that this part of the light is deflected relative to the original. Refracted and formed deflected light P2 enters the lens group 20, and the intersection point of the reverse extension line of the deflected light P2 and the plane where the overall light-emitting surface 11 is located is located outside the light-emitting point of the deflected light P2 corresponding to the incident light P1, so this The outgoing angle of part of the light rays after passing through the lens group 20 becomes larger, so that the light-transmitting element 30 makes the part of the light rays incident into it extend directionally to the outside of the pixelated light shape, thereby realizing the boundary of the pixelated light shape The virtualization makes the pixelated light shape transition softly at its blurred boundary, and finally makes the pixelated light shape and non-pixelated light shape superimposed at the overlapping boundary c1 with uniform transition and good cohesion, as shown in Figure 20 and Figure 21 shown. In addition, the present application uses the transparent element 30 to blur the boundary of the pixelated light shape, and the transparent element 30 does not block light, so light energy is not lost, and the utilization rate of light energy is improved. At the same time, the illumination range of the blurred pixelated light shape is expanded, so the blur effect will also expand the illumination range of the entire light shape. The light-transmitting element 30 is only set on the boundary, and the imaged light shape of the central pixel will not be blurred, and the edge pixels will only be blurred toward the edge, so the shading effect between pixels will not be affected, that is, the blurred light Will not shoot into the adjacent pixel area.

Preferably, in the present application, the light-transmitting element 30 at least covers the upper boundary of the pixel illumination light source 10, at least blurring the lower boundary of the pixelated light shape, making the transition of the road surface softer, and better matching with the auxiliary low beam light shape. connect. More preferably, in this embodiment, as shown in FIG. 11, FIG. 12, and FIG. 14, the light-transmitting element 30 is an annular member, and the light-transmitting element 30 covers a full circle boundary of the pixel illumination light source 10; no light-transmitting element is provided When the element 30 is used, the pixelized light shape formed is shown in Figure 18, and the boundary of the entire light shape is relatively sharp; after a full circle of light-transmitting elements 30 is installed in this application, the formed pixelated light shape is shown in Figure 19. Blur the entire boundary of the pixelated light shape, and make the boundary of the entire pixelated light shape softly transition. In this way, the pixelated light shape with the low beam cut-off line with blurred boundaries is shown in Figure 20, and the simulated road surface light shape formed by superimposing the pixelated light shape with blurred boundaries and the non-pixelated light shape is shown in Figure 21 It can be seen from Figure 20 and Figure 21 that the transition at the superimposed boundary c1 is uniform and the cohesion is very good.

Further, in other embodiments, the light-transmitting element 30 that only covers the upper boundary of the overall light-emitting surface 11 can be provided at the upper boundary of the pixel illumination light source 10. At this time, only the light emitted from the upper boundary of the overall light-emitting surface 11 is directed to The light is deflected downward, but the light emitted from the lower boundary, left boundary and right boundary of the overall light-emitting surface 11 still propagates in the original propagation direction without deflection, and will not affect the lighting areas on the upper side and the left and right sides. It is also possible to set the light-transmitting element 30 that only covers the lower boundary of the entire light-emitting surface 11 at the lower boundary of the pixel illumination light source 10. At this time, only the upper boundary of the pixelated light shape is blurred, so as to avoid drivers in the tunnel from observing Discomfort caused by sharp borders. Therefore, the light-transmitting element 30 can be provided at the corresponding boundary of the pixel illumination light source 10 according to the specific requirement of blurring the boundary of the pixelated light shape.

Further, the light-transmitting element 30 is made of silica gel, that is, the light-transmitting element 30 is made of silica gel, which can effectively reduce the manufacturing cost while realizing blurred and pixelated light-shape boundaries. Preferably, the closer the light-transmitting element 30 is to the pixel lighting source 10, the better. In this embodiment, the distance between the pixel lighting source 10 and the light-transmitting element 30 is less than or equal to 0.5mm, preferably 0.5mm, to prevent collision or overheat. Certainly, in other embodiments, the distance between the pixel illumination light source 10 and the light-transmitting element 30 may also be greater than 0.5 mm.

Further, the light-emitting surface of the light-transmitting element 30 may be a plane or a curved surface with patterns, and the light-incident surface of the light-transmitting element 30 may be a plane or a curved surface with patterns, which are distributed on the upper and lower sides of the pixel illumination light source 10. The light-transmitting elements 30 on the side or the left and right sides can be arranged symmetrically or asymmetrically, as long as the light-incident surface and the light-emitting surface of the light-transmitting element 30 match, the outgoing angle of the light entering it is adjusted to make the light deflection. Fold to the desired exit angle. Based on this, there are many specific forms of the light-transmitting element 30. For example, as shown in FIG. The light-emitting surface on the front side of the light-transmitting element 30 is composed of a plurality of angled inclined plane segments 34; as another example: as shown in FIG. It is a planar structure, and the light-emitting surface on the front side of the light-transmitting element 30 is composed of a plurality of arc-shaped surface segments 31 and a plurality of horizontally extending horizontal plane segments 33; The light surface is composed of vertical plane segments 32 extending up and down, and has a planar structure, and the light emitting surface on the front side of the light-transmitting element 30 is composed of inclined plane segments 34 extending obliquely.

Preferably, the pixel illumination light source 10 is a matrix LED light source with tens to hundreds of pixels, in this embodiment, it is 100 pixels, and the size of the pixels is about 0.5mm side length, so that the definition of the formed pixel image can be made higher , which in turn can achieve higher-precision regulation of the light shape formed after the pixel image is projected, and the formed dark part boundary and dark part position changes are also more refined and smooth, which can better avoid dazzling pedestrians or drivers Or blinding, and, in a rectangular array, a wider light shape can be obtained to illuminate the areas on both sides of the road, which is conducive to the driver's observation of pedestrians and road signs on both sides of the road.

Further, as shown in FIG. 6 to FIG. 9 , the vehicle pixelated lighting device also includes a lens holder 40, a circuit board 50 and a heat sink 60; the lens group 20 includes a first lens 21, a The second lens 22 and the third lens 23, the first lens 21 is a lens with positive refractive power, the second lens 22 is a lens with negative refractive power, and the third lens 23 is a lens with positive refractive power; 21. Both the second lens 22 and the third lens 23 are installed in the lens holder 40, the pixel illumination light source 10 is installed on the circuit board 50, the heat sink 60, the circuit board 50 and the lens holder 40 are fixedly connected in sequence along the light emitting direction, and the light transmission The element 30 is fixed on the lens holder 40 or the circuit board 50 .

Further, as shown in FIGS. 6 to 7 , the vehicle pixelated lighting device also includes a first limiting ring 70 and a second limiting ring 80 which are both arranged in the lens holder 40 , and a screw threaded on the front end of the lens holder 40 . The light beam limiting element 90, the first limiting ring 70 and the second limiting ring 80 are fixedly assembled in the lens holder 40 in a tightly fitting manner, and the rear end of the inner wall of the lens holder 40 is provided with a first limiter that is bent and extended inwardly. The position portion 41, the inner wall of the lens holder 40 is provided with a second limit portion 42 and a third limit portion 43 protruding inward, the first limit portion 41, the first limit ring 70, the second limit portion 42 , the second limiting ring 80, the third limiting part and the beam limiting element 90 are distributed sequentially from back to front along the light emitting direction, and the outer peripheral surfaces of the first lens 21, the second lens 22 and the third lens 23 are all in contact with the lens On the inner wall of the bracket 40, the first lens 21 is limited between the first limiting portion 41 and the first limiting ring 70, and the second lens 22 is limited between the second limiting portion 42 and the second limiting ring. 80 , the third lens 23 is limited between the third limiting portion 43 and the light beam limiting element 90 . In this way, the first lens 21 , the second lens 22 and the third lens 23 are sequentially arranged and fixedly installed inside the lens holder 40 , and the first lens 21 is pressed tightly by the first limiting ring 70 and the first limiting part 41 In place, the second lens 22 is pressed in place by the second limiting ring 80 and the second limiting part 42, and the third lens 23 is pressed in place by the beam limiting element 90 and the third limiting part 43, so that the first The lens 21 , the second lens 22 and the third lens 23 can be closely arranged inside the lens holder 40 to effectively reduce the overall volume and facilitate miniaturization design. In addition, the present application uses the first limiting ring 70, the second limiting ring 80 and the beam limiting element 90 to limit the front and rear of the lens group 20, without additionally setting a limiting component inside the lens holder 40, which can reduce the impact on the lens. The manufacturing precision requirement of the bracket 40 reduces the production cost to a certain extent. The light beam limiting element 90 is threaded on the outer periphery of the front end of the lens holder 40, and there is a detachable connection between the two, which is convenient for the first lens 21, the first limiting ring 70, the second lens 22, the second limiting ring 80 and The third lens 23 is sequentially loaded into the lens holder 40 . The beam limiting element 90 is preferably an aperture stop, and the aperture stop determines the size of the passing light beam of the lens group 20 .

Preferably, the rear end of the outer wall of the lens holder 40 can be provided with an outwardly bent mounting seat, the circuit board 50 is mounted on the mounting seat, and the heat sink 60 is mounted on the rear side of the circuit board 50, which is convenient for pixel alignment. The illuminating light source 10 can dissipate heat; and an opening can also be provided on the mounting seat to facilitate the placement of connectors, so as to realize power supply to the circuit board 50 and the pixel illuminating light source 10, and can also play a role in ventilation and heat dissipation to improve heat dissipation power. In addition, the outer diameter of the first lens 21 is smaller than the outer diameter of the second lens 22, and the outer diameter of the second lens 22 is smaller than the outer diameter of the third lens 23, which can conform to the outgoing direction of the light, ensure the efficiency of light transmission, and improve the illumination brightness .

Further, the Abbe numbers of the materials of the first lens 21 and the third lens 23 are larger than the Abbe numbers of the materials of the second lens 22 , which can help eliminate chromatic aberration. The Abbe number is the dispersion coefficient, which is used to measure the degree of light dispersion of the transparent medium; generally speaking, under the premise of the same optical power, the smaller the Abbe number of the medium, the more serious the dispersion; conversely, the Abbe number of the medium The larger the value, the lighter the dispersion. Preferably, the material of the first lens 21 is optical glass, such as selecting the optical glass of H-K9L, the material of the second lens 22 is PC (polycarbonate), and the material of the third lens 23 is PMMA (polymethyl Methyl acrylate), better eliminate chromatic aberration.

Preferably, as shown in FIG. 7, part or all of the outer peripheral surface of the first lens 21, part or all of the outer peripheral surface of the second lens 22, part or all of the outer peripheral surface of the third lens 23 and the inner wall of the lens holder 40 The radial movement of the first lens 21 , the second lens 22 and the third lens 23 is restricted respectively. In addition, the outer peripheral side of the third lens 23 is provided with a lens flange structure 231, and the outer peripheral surface of the lens flange structure 231 abuts against the inner wall of the lens holder 40, which can ensure that the part used for light transmission will not be blocked by the lens holder 40. The connection structure is blocked, thereby ensuring the efficiency of light transmission and improving the brightness of illumination. Moreover, the lens flange structure 231 is also used to abut against the light beam limiting element 90 and the third limiting part 43 to limit and fix the third lens 23 between the beam limiting element 90 and the third limiting portion 43 .

Further, at least one of the first lens 21, the second lens 22 and the third lens 23 is provided with an anti-reflection film on the light incident surface and/or the light exit surface, which can improve the light incident surface or the light exit surface provided with the anti-reflection film. The light transmittance of the surface is enhanced to enhance the light transmittance performance, thereby improving the lighting brightness. In addition, the outer peripheral surface of the first lens 21, the outer peripheral surface of the second lens 22, and the lens burring structure 231 of the third lens 23 are provided with a light-shielding layer to reduce light from the first lens 21, the second lens 22, and the second lens. The edge of the three lenses 23 emerges; the light-blocking layer can be formed by matte black treatment to prevent stray light; The light shape can be consistent with the pixel image, and will not produce random distribution of light spots.

To sum up, the present invention effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims

A pixelated lighting device for a vehicle, comprising a pixel lighting light source (10) and a lens group (20) sequentially arranged along a light emitting direction, the pixel lighting light source (10) having an integral light-emitting surface (11) facing the lens group (20) , characterized in that: it also includes a light-transmitting element (30) fixed between the pixel lighting source (10) and the lens group (20), and the light-transmitting element (30) is arranged on the pixel lighting light source (10) at the boundary of the pixel illumination source (10) and cover at least part of the boundary of the overall light-emitting surface (11) of the pixel illumination source (10); 20) of the light-emitting surface; the light-transmitting element (30) is used to change the deflection angle of the light that enters the pixel illumination light source (10) into it, and injects the deflected light into the lens group (20), and the deflection The intersection of the reverse extension line of the refracted ray and the plane where the overall light-emitting surface (11) is located is located outside the luminous point of the incident ray corresponding to the refracted ray.
The vehicle pixelated lighting device according to claim 1, characterized in that: the light-transmitting element (30) covers the upper boundary of the entire light-emitting surface (11) of the pixel lighting light source (10).
The vehicle pixelated lighting device according to claim 1, characterized in that: the light-transmitting element (30) covers a whole boundary of the entire light-emitting surface (11) of the pixel lighting light source (10).
The vehicle pixelated lighting device according to any one of claims 1-3, characterized in that: the light-transmitting element (30) is a silicone part.
The vehicle pixelated lighting device according to claim 1, characterized in that: the light-emitting surface of the light-transmitting element (30) has an arc-shaped surface segment (31), a vertical plane segment (32), and a horizontal plane segment (33) , and at least one of the inclined plane segments (34).
The vehicle pixelated lighting device according to claim 1, characterized in that: the light incident surface of the light-transmitting element (30) has an arc-shaped surface section (31), a vertical plane section (32), and a horizontal plane section (33 ), and at least one of the inclined plane section (34).
The vehicle pixelated lighting device according to claim 1, characterized in that: the distance between the pixel lighting light source (10) and the light-transmitting element (30) is less than or equal to 0.5 mm.
The vehicle pixelated lighting device according to claim 1, characterized in that: the lens group (20) comprises a first lens (21), a second lens (22) and a third lens (23) arranged in sequence along the light emitting direction ), the first lens (21) is a lens with positive power, the second lens (22) is a lens with negative power, and the third lens (23) is a lens with positive power .
The vehicle pixelated lighting device according to claim 8, characterized in that: the Abbe numbers of the first lens (21) and the third lens (23) are both greater than the Abbe number of the second lens (22).
The vehicle pixelated lighting device according to claim 9, characterized in that: the material of the first lens (21) is optical glass, the material of the second lens (22) is PC, and the material of the third lens ( 23) The material is PMMA.
The vehicle pixelated lighting device according to claim 8, characterized in that: it also includes a lens holder (40), a circuit board (50) and a radiator (60), the first lens (21), the second lens ( 22) and the third lens (23) are installed in the lens holder (40), the pixel illumination light source (10) is installed on the circuit board (50), the radiator (60), circuit board (50) and The lens holder (40) is fixedly connected sequentially along the light emitting direction, and the light-transmitting element (30) is fixed on the lens holder (40) or the circuit board (50).
The vehicle pixelated lighting device according to claim 11, characterized in that it further comprises a first limiting ring (70) and a second limiting ring (80) both arranged in the lens holder (40), and The beam limiting element (90) is threadedly connected to one end of the lens holder (40), the other end of the lens holder (40) is provided with a first limiting part (41), and the inner wall is provided with a second limiting part (42) and the third limiting part (43), the outer peripheral surfaces of the first lens (21), the second lens (22) and the third lens (23) are all in contact with the inner wall of the lens holder (40) , the first lens (21) is limited between the first limiting part (41) and the first limiting ring (70), and the second lens (22) is limited at the second limiting part Between (42) and the second limiting ring (80), the third lens (23) is limited between the third limiting part (43) and the light beam limiting element (90).
The vehicle pixelated lighting device according to claim 12, characterized in that the light beam limiting element (90) is an aperture stop.
A vehicle lamp, characterized in that the vehicle pixelated lighting device according to any one of claims 1-13 is arranged in the vehicle lamp.
A vehicle, characterized in that the vehicle light according to claim 14 is arranged in the vehicle.