CN116685802A

CN116685802A - Light shape adjusting method of lighting module, head lamp and vehicle

Info

Publication number: CN116685802A
Application number: CN202180086675.0A
Authority: CN
Inventors: 仇智平; 张大攀; 祝贺; 桑文慧
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2023-09-01
Also published as: WO2022256983A1

Abstract

A light pattern of a lighting module, a head lamp and a vehicle, the light pattern of the lighting module comprises a pixelated light pattern (100) and a non-pixelated light pattern (200), the range of the angle difference between the upper boundary and the lower boundary of the pixelated light pattern (100) is 5 DEG to 8 DEG, the light pattern adjusting method of the lighting module comprises adjusting the position of the pixelated light pattern (100) so that the angle range of the lower boundary of the pixelated light pattern (100) is more than or equal to-8 DEG and less than or equal to-4 DEG, and the angle range of the upper boundary is more than or equal to 0 DEG and less than or equal to 3 DEG in a low beam lighting mode; in the high beam illumination mode, the angle range of the lower boundary of the pixelated light pattern (100) is equal to or greater than-3 DEG and equal to or less than-1 DEG, and the angle range of the upper boundary is equal to or greater than 4 DEG and equal to or less than 8 deg. The light shape adjusting method of the lighting module is simple to operate, good in lighting effect and capable of reducing manufacturing cost of the lighting module.

Description

Light shape adjusting method of lighting module, head lamp and vehicle

Technical Field

The invention relates to an automobile lamp, in particular to a light shape adjusting method of an illumination module. The invention also relates to a lighting module, a headlight and a vehicle.

Background

In recent years, technical solutions for pixelated illumination have been proposed in the technical field of automotive lamp illumination, where an automotive lamp includes a pixelated illumination unit and a non-pixelated illumination unit, the pixelated illumination unit projects to form a pixelated light pattern 100, the non-pixelated illumination unit projects to form a non-pixelated light pattern 200, as shown in fig. 1, the non-pixelated light pattern 200 is generally formed into a low beam widening light pattern, that is, an auxiliary low beam light pattern, and the pixelated light pattern 100 can be turned on or off by a light source to form an illumination light pattern conforming to different illumination modes, so as to realize a self-adaptive high beam or anti-glare high beam function, and functions such as a low beam cut-off line, projecting a pixelated symbol to a road surface, and the like, and as shown in fig. 20, by turning off a part of light source, the pixelated light pattern 100 is formed into a main low beam light pattern having a low beam cut-off line, and the non-pixelated light pattern 200 is superimposed for low beam illumination. Taking the example that the difference between the upper boundary and the lower boundary of the pixelated light shape 100 is 8 ° as an example, one technical solution is that the upper boundary of the pixelated light shape 100 meets the illumination requirement of the adaptive high beam or the anti-dazzling high beam, the lower boundary meets the requirement of forming the low beam cut-off line, for example, when the upper boundary of the light shape is at +5° as shown in fig. 1 and the lower boundary is at-3 °, although the technical solution can meet the requirements of the pixelated illumination of the adaptive high beam or the anti-dazzling high beam at a far distance and the formation of the low beam cut-off line, as shown in fig. 2, the pixelated symbol projected onto the road surface has poor display effect because the position of the pixelated light shape 100 is higher, the visibility of a driver is not good enough, and the distortion generated by the pixelated symbol at a large distance is also larger, so the formed road surface pixelated symbol has poor projection effect. Another solution is that the upper boundary of the pixelated light pattern 100 meets the requirement of forming a low beam cut-off line, the lower boundary meets the requirement of road sign projection, for example, as shown in fig. 3, the upper boundary of the light pattern is at +2°, and the lower boundary is at-6 °, which, as shown in fig. 4, although the low beam cut-off line can be formed and a good effect of sign projection on the road surface can be obtained, the function of adaptive high beam or anti-glare high beam pixelated illumination cannot be realized, because the position of the pixelated light pattern 100 is lower, the illumination is closer on the road surface, and the requirement of the high beam illumination range cannot be met. If the upper and lower boundary angles of the pixelized light form 100 are simultaneously subjected to large measures, the requirements of the self-adaptive high beam or anti-dazzling high beam function are met, the requirement of good road sign projection effect is met, the cost of the LED light source, the design difficulty of the lens group and the cost are greatly increased, and the space occupation is relatively large.

Disclosure of Invention

The first aspect of the present invention provides a light shape adjustment method for a lighting module, which has simple operation, good lighting effect, and reduced manufacturing cost.

In addition, the second aspect of the present invention aims to provide a lighting module, which can realize no dark area after switching between high beam lighting and low beam lighting, so that the lighting effect of light shape is good and the manufacturing cost is low.

Further, the problem to be solved by the third aspect of the present invention is to provide a headlamp capable of realizing no dark area after switching between high beam illumination and low beam illumination, so that the illumination effect of the light shape is good and the manufacturing cost is low.

Still further, the problem to be solved by the fourth aspect of the present invention is to provide a vehicle whose head lamp can realize no dark area after switching of high beam illumination and low beam illumination, so that the illumination effect of light shape is good and the manufacturing cost is low.

In order to solve the above-mentioned technical problems, a first aspect of the present invention provides a light shape adjustment method of an illumination module, where an illumination light shape of the illumination module includes a pixelated light shape and a non-pixelated light shape, and an angle difference between an upper boundary and a lower boundary of the pixelated light shape ranges from 5 ° to 8 °, and the light shape adjustment method of the illumination module includes adjusting a position of the pixelated light shape such that an angle range of a lower boundary of the pixelated light shape is equal to or greater than-8 °, equal to or less than-4 °, and an angle range of an upper boundary is equal to or greater than 0 °, equal to or less than 3 ° in a low beam illumination mode; in the high beam illumination mode, the angle range of the lower boundary of the pixelated light form is greater than or equal to-3 degrees and less than or equal to-1 degrees, and the angle range of the upper boundary is greater than or equal to 4 degrees and less than or equal to 8 degrees.

In addition, the second aspect of the present invention further provides an illumination module, including at least one pixelated illumination section and at least one non-pixelated illumination section, the pixelated illumination section including a pixelated light source and a pixelated light-emitting lens, the non-pixelated illumination section including, in order along a light-emitting direction, a non-pixelated light source, a non-pixelated primary optical element and a non-pixelated light-emitting lens, the pixelated light-emitting lens being integrally formed with the non-pixelated light-emitting lens, the pixelated illumination section being capable of projecting to form the pixelated light shape, the non-pixelated illumination section being capable of projecting to form the non-pixelated light shape, wherein the non-pixelated primary optical element includes a first primary optical element and a second primary optical element, the first primary optical element and the second primary optical element being arranged in an up-down direction, the first primary optical element being adapted to form a low beam broadening light shape, the second primary optical element being adapted to form a light shape that complements a dark area; or the non-pixelated primary optical element comprises two first primary optical elements, wherein the first primary optical elements are arranged on two sides of the pixelated illumination part, and the lower boundary of the light-emitting surface of one side of the first primary optical elements is positioned below the lower boundary of the light-emitting surface of the other side of the first primary optical elements.

Preferably, the first primary optical element and the second primary optical element are integrally formed.

More preferably, the first primary optical element and the second primary optical element respectively include a primary optical element light-in end, a primary optical element light channel and a primary optical element light-out end which are integrally formed from back to front, the forming material of the primary optical element light-in end is different from the forming material of the primary optical element light channel and the primary optical element light-out end, and the primary optical element light-in ends are arranged in one-to-one correspondence with the non-pixelated light sources.

Further preferably, the light incident end of the primary optical element is a silica gel molding, and the light channel of the primary optical element and the light emergent end of the primary optical element are PC molding.

As another preferred embodiment, an interface between the light-entering end of the primary optical element and the light channel of the primary optical element corresponding to the light-entering end of the primary optical element is provided as a convex curved surface.

More preferably, the light emitting surface of the pixelated light emitting lens is a convex curved surface, and the light emitting surface of the pixelated light emitting lens and the light emitting surface of the non-pixelated light emitting lens are connected to form a smooth curved surface with continuous curvature.

As still another preferred embodiment, the pixelized lighting part further includes an imaging lens group, the imaging lens group includes a first imaging lens and a second imaging lens sequentially arranged from back to front, the first imaging lens is configured as a biconvex lens with an incident surface and an emergent surface both having convex curved surfaces, the second imaging lens is configured as a convex-concave lens with an incident surface having concave curved surfaces and an emergent surface having convex curved surfaces, and the pixelized emergent lens is configured as a biconvex lens with an incident surface and an emergent surface both having convex curved surfaces.

Specifically, the pixelated light source is a plurality of LED light emitting units capable of controlling on and off independently.

In addition, a third aspect of the invention provides a headlight, which comprises the lighting module according to any one of the second aspects.

Further, a fourth aspect of the present invention provides a vehicle, including the headlamp according to the third aspect.

According to the technical scheme, the illumination angle of the pixelated light form of the illumination module is controlled, so that the range of the angle difference between the upper boundary and the lower boundary of the pixelated light form is 5-8 degrees, and the angle range of the lower boundary of the pixelated light form is more than or equal to-8 degrees and less than or equal to-4 degrees and the angle range of the upper boundary of the pixelated light form is more than or equal to 0 degrees and less than or equal to 3 degrees in the low beam illumination mode; in the high beam illumination mode, the angle range of the lower boundary of the pixelated light form is equal to or greater than-3 DEG and equal to or less than-1 DEG, and the angle range of the upper boundary is equal to or greater than 4 DEG and equal to or less than 8 deg. In the light shape adjusting method of the lighting module, the high beam ADB, the low beam cutoff line and the road sign projection function are met by controlling the difference of the upper boundary angle range and the lower boundary angle range of the pixelated light shape region, and the manufacturing cost of the lighting module is lower and the projection effect is good. Meanwhile, the pixelized illumination part and the non-pixelized illumination part are arranged in the same module, and the combination of the first primary optical element and the second primary optical element or the combination of a plurality of first primary optical elements enables the light shape of the complementary dark area to be formed in the up-down adjustment process of the pixelized light shape, optimizes the light emitting effect, enables the illumination effect of the pixelized light shape with a narrower upper-lower boundary angle difference range to be good, and has simple structure and lower production cost.

Other advantages and technical effects of the preferred embodiments of the present invention will be further described in the following detailed description.

Drawings

FIG. 1 is a schematic illustration of illumination areas in the prior art where the upper boundary of the pixelated light shapes meets the adaptive high beam or anti-glare high beam and the lower boundary meets the low beam cutoff requirement;

FIG. 2 is a projection effect diagram of the vehicle headlamp of FIG. 1;

FIG. 3 is a schematic diagram of the relative positions of a pixelated light pattern and a non-pixelated light pattern in the prior art when the upper boundary of the pixelated light pattern meets the low beam cutoff and the lower boundary meets the road sign projection requirements;

FIG. 4 is a projection effect diagram of the vehicle headlamp of FIG. 3;

FIG. 5 is a schematic diagram of the relative positions of the pixelated light shapes and non-pixelated light shapes of FIG. 1 after being down-regulated together in a low beam illumination mode;

FIG. 6 is a schematic diagram of an embodiment of a lighting module according to the present invention;

FIG. 7 is a top view of the lighting module shown in FIG. 6;

FIG. 8 is a section A-A of FIG. 7;

FIG. 9 is a schematic view of another embodiment of the lighting module of the present invention;

FIG. 10 is a top view of the lighting module shown in FIG. 9;

FIG. 11 is a section C-C of FIG. 10;

FIG. 12 is a section B-B of FIG. 10;

fig. 13 is a schematic diagram of the relative positions of the pixelated light shapes and the non-pixelated light shapes when the light source corresponding to the first primary optical element 231 with the lower boundary of the light emitting surface is turned on and the light source corresponding to the first primary optical element 231 with the upper boundary of the light emitting surface is turned off in the embodiment shown in fig. 10;

FIG. 14 is a schematic structural view of one embodiment of a non-pixelated primary optical element of the present invention;

FIG. 15 is a top view of the non-pixelated primary optical element of FIG. 14;

FIG. 16 is a section D-D of FIG. 15;

FIG. 17 is a side view of the non-pixelated primary optical element of FIG. 14;

FIG. 18 is a section E-E of FIG. 17;

FIG. 19 is a schematic diagram of the structure of one embodiment of a pixelated light extraction lens and imaging lens assembly of the present invention;

FIG. 20 is a schematic view of the illumination areas of the pixelated and non-pixelated light shapes of the present invention in low beam illumination mode;

FIG. 21 is one of the structural schematic diagrams of one embodiment of the dimming mechanism of the present invention;

fig. 22 is a second schematic structural view of an embodiment of the dimming mechanism of the present invention.

Description of the reference numerals

1 pixelated illumination section 11 pixelated light source

12 pixelized light emergent lens 13 imaging lens group

131 first imaging lens 132 second imaging lens

2 non-pixelated Lighting section 21 non-pixelated light Source

22 non-pixelated light extraction lens 23 non-pixelated primary optical element

231 first primary optical element 232 second primary optical element

233 primary optic light entry end 234 primary optic light channel

Light-emitting end 3 optical axis of 235 primary optical element

4 ball screw assembly 41 ball screw

42 ball nut 5 light modulation actuator

6 radiator

100 pixelated light shape 200 non-pixelated light shape

300 dark area

Detailed Description

The following detailed description of the embodiments of the invention is provided in connection with the accompanying drawings, it being understood that the embodiments described herein are for purposes of illustration and explanation only, and the scope of the invention is not limited to the following embodiments.

In the description of the present invention, it should be noted that, in the following description, some terms related to the technical solution of the present invention, such as "front", "rear", "upper" and "lower", are taken as examples of the pixelated illumination section 1, one end where the pixelated light source 11 is located is the rear, one end where the pixelated light-emitting lens 12 is located is the front, and the directions represented by the upper and lower sides of the pixelated illumination section 1 are the up and down directions with respect to the front and rear directions of the pixelated illumination section 1. The terminology is based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description only, and is not indicative or implying that the apparatus or elements in question must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The first aspect of the present invention provides a light shape adjustment method of a lighting module, wherein a light shape of the lighting module comprises a pixelated light shape 100 and a non-pixelated light shape 200, an angle difference between an upper boundary and a lower boundary of the pixelated light shape 100 ranges from 5 ° to 8 °, the light shape adjustment method of the lighting module comprises adjusting a position of the pixelated light shape 100 such that an angle range of a lower boundary of the pixelated light shape 100 is greater than or equal to-8 ° and less than or equal to-4 °, and an angle range of an upper boundary is greater than or equal to 0 ° and less than or equal to 3 ° in a low beam lighting mode; in the high beam illumination mode, the angle range of the lower boundary of the pixelated light form 100 is equal to or greater than-3 ° and equal to or less than-1 °, and the angle range of the upper boundary is equal to or greater than 4 ° and equal to or less than 8 °. The upper and lower boundary angles of the light shape of the lighting module refer to the upper and lower boundary angles corresponding to the projection of the light shape on the light distribution screen.

The light shape adjusting method of the lighting module is a dimming method of a pixelated lighting module with a narrower range of upper and lower boundary angle difference, and by utilizing the light shape adjusting method of the lighting module, three functional requirements of high beam ADB, low beam cutoff line and road sign projection can be simultaneously met, the production cost of the lighting module adopting the light shape adjusting method of the lighting module can be effectively reduced, and the light shape effect is good.

As shown in fig. 6 to 12, the second aspect of the present invention further provides an illumination module, including at least one pixelated illumination section 1 and at least one non-pixelated illumination section 2, the pixelated illumination section 1 including a pixelated light source 11 and a pixelated light exit lens 12, the non-pixelated illumination section 2 including, in order along the light exit direction, a non-pixelated light source 21, a non-pixelated primary optical element 23 and a non-pixelated light exit lens 22, the pixelated light exit lens 12 being integrally formed with the non-pixelated light exit lens 22, the pixelated illumination section 1 being capable of projecting to form the pixelated light shape 100, the non-pixelated illumination section 2 being capable of projecting to form the non-pixelated light shape 200, the illumination module being capable of employing a light shape adjustment method of the above-described illumination module, by adjusting the position of the pixelated light shape 100 such that, in a low beam illumination mode, the angular range of the lower boundary of the pixelated light shape 100 is greater than-8 ° and equal to-4 ° and the upper boundary is greater than or equal to 0 ° and equal to 3 °. In the high beam illumination mode, the angle range of the lower boundary of the pixelated light form 100 is equal to or greater than-3 ° and equal to or less than-1 °, and the angle range of the upper boundary is equal to or greater than 4 ° and equal to or less than 8 °.

The light emitting surfaces of the pixelized light emitting lens 12 and the non-pixelized light emitting lens 22 are integrally formed, and are preferably curved surfaces with continuous and smooth curvature, so that the pixelized light emitting lens 12 and the non-pixelized light emitting lens 22 have better integrity and better modeling effect.

Specifically, as shown in fig. 21 and 22, a dimming mechanism is connected to the lighting module, the dimming mechanism includes three ball screw assemblies 4, a single ball screw assembly includes a ball screw 41 and a ball screw nut 42, one end of one ball screw 41 is connected to the radiator 6 through the ball screw nut 42, the other end is connected to a dimming actuator 5 fixed to the lamp body or a support fixed relative to the lamp body, one end of the ball screw 41 of the other two ball screw assemblies 4 is connected to the radiator 6 through the ball screw nut 42, the other ends are fixed to the lamp body or the support fixed relative to the lamp body, the ball centers of the ball screws 41 form a horizontal dimming shaft, and when the dimming actuator 5 arranged at the upper part drives the ball screw 41 connected to the ball screw assembly to move back and forth, the lighting module can rotate around the horizontal dimming shaft, so as to dim the lighting module, so that the pixelized light shape 100 and the non-pixelized light shape 200 of the lighting module move up and down as a whole.

Because the pixelated light-emitting lens and the non-pixelated light-emitting lens are integrally formed, the pixelated lighting part 1 and the non-pixelated lighting part 2 are integrated in one lighting module, and the relative positions of the pixelated light form 100 and the non-pixelated light form 200 are fixed, so that when the pixelated light form 100 is downwards adjusted on the basis of the lighting area shown in fig. 1 to meet the requirement of the low-beam lighting mode, the non-pixelated light form 200 also moves along with the pixelated light form 100, and when the pixelated light form 100 and the pixelated light form and the non-pixelated light form simultaneously move downwards, a dark area 300 shown in fig. 5 is formed, and the low-beam lighting effect is seriously affected.

Therefore, in order to solve the above-mentioned technical problem, it is more preferable that the non-pixelated primary optical element 23 includes a first primary optical element 231 and a second primary optical element 232, the first primary optical element 231 and the second primary optical element 232 being disposed in the up-down direction, the first primary optical element 231 being adapted to form a low beam broadening light shape, and the second primary optical element 232 being adapted to form a light shape complementing the dark area 300.

In the present invention, as shown in fig. 6 to 8, the first primary optical element 231 is disposed on the upper portion of the second primary optical element 232, the light emitting surfaces of the first primary optical element 231 and the second primary optical element 232 are integrally formed, the first primary optical element 231 is used for forming a low beam broadening light shape, and the second primary optical element 232 is used for forming a light shape complementing the dark space 300. The non-pixelated light sources 21 corresponding to the first primary optical element 231 located above are illuminated in both the low beam illumination mode and the high beam illumination mode, while the non-pixelated light sources 21 corresponding to the second primary optical element 232 located below are only illuminated in the low beam illumination mode and are not illuminated in the high beam illumination mode, so that the dark space 300 shown in fig. 5 can not appear in the illumination module of the present invention during the switching process of the low beam illumination mode and the high beam illumination mode.

Alternatively, as shown in fig. 9 and 10, the non-pixelated primary optical element 23 includes two first primary optical elements 231, where the first primary optical elements 231 are disposed on two sides of the pixelated illumination section 1, and the lower boundary of the light emitting surface of the first primary optical element 231 on one side is located below the lower boundary of the light emitting surface of the first primary optical element 231 on the other side.

In this embodiment, the non-pixelated primary optical element 23 includes two first primary optical elements 231 disposed on two sides of the pixelated lighting part 1, wherein the two first primary optical elements 231 are used to form a low beam broadening light shape, and the lower boundary of the light emitting surface of the first primary optical element 231 on one side is located below the lower boundary of the light emitting surface of the first primary optical element 231 on the other side. As shown in fig. 12, the upper boundary of the low-beam widening light pattern formed by the first primary optical element 231 with the upper boundary of the light-emitting surface is lower than the upper boundary of the light pattern formed by the first primary optical element 231 with the lower boundary of the light-emitting surface, the light source corresponding to the first primary optical element 231 is turned on in the high beam illumination mode, and is turned off in the low beam illumination mode, and the relative positions of the pixelated light pattern 100 and the non-pixelated light pattern 200 formed by the illumination module are the same as those shown in fig. 1 in the high beam illumination mode; as shown in fig. 11, the upper boundary of the low beam broadening light pattern formed by the first primary optical element 231 with the lower boundary of the light exit surface is located above the upper boundary of the light pattern formed by the first primary optical element 231 with the upper boundary of the light exit surface, the light source corresponding to the first primary optical element 231 is turned on in the low beam illumination mode, and is turned off in the high beam illumination mode, and the relative positions of the pixelated light pattern 100 and the non-pixelated light pattern 200 formed by the illumination module are the same as those shown in fig. 3, so that the light exit effect is better. The principle of this way of avoiding the occurrence of the dark space 300 during the switching of the low beam illumination mode and the high beam illumination mode is explained as follows: in the high beam illumination mode, assuming that the light source corresponding to the first primary optical element 231 below the lower boundary of the light exit surface is turned on, and the light source corresponding to the first primary optical element 231 above the lower boundary of the light exit surface is turned off, the relative positions of the pixelated light pattern 100 and the non-pixelated light pattern 200 formed by the illumination module are the same as those shown in fig. 13, and when the high beam illumination mode is switched to the low beam illumination mode, the non-pixelated light pattern 200 in fig. 13 moves down to the light pattern position shown in fig. 3 along with the pixelated light pattern 100, so as to meet the illumination requirement of the low beam illumination mode. Therefore, in the present invention, when the high beam illumination mode is switched to the low beam illumination mode, the light source corresponding to the first primary optical element 231 in fig. 12 is turned off, and the light source corresponding to the first primary optical element 231 in fig. 11 is turned on, so that the dark area 300 is not formed. In the switching process of the high beam illumination mode and the low beam illumination mode, the non-pixelated light sources 21 corresponding to the corresponding non-pixelated illumination parts are selected to be turned on, so that the illumination requirement is met, and the dark area 300 is not formed in the switching process.

In fig. 3, only the positional relationship between the pixelated light pattern 100 and the non-pixelated light pattern 200 in the low beam lighting mode is shown, and the low beam light pattern having the low beam cutoff line as shown in fig. 20 is formed by controlling the on/off of the pixelated light source 11.

It can be seen that the pixelated lighting part 1 and the non-pixelated lighting part 2 in the present invention do not have the dark area 300 during the switching process of the high beam lighting mode and the low beam lighting mode, compared with the lighting module having the pixelated lighting part 1 and the non-pixelated lighting part 2 in the prior art, thereby making the lighting effect better.

In the present invention, the pixelated lighting unit 1 and the non-pixelated lighting unit 2 are provided in the same module, and the heat dissipation device provided for the module can dissipate heat from the pixelated lighting unit 1 and the non-pixelated lighting unit 2 as a whole, thereby achieving a good heat dissipation effect.

It should be noted that, the upper and lower boundary angle difference of the pixelated light shape area formed by the pixelated lighting part 1 of the present invention ranges from 5 ° to 8 °, and the purpose is that if the pixelated light shape area formed by the pixelated lighting part 1 is larger than the range value, the pixelated light shape area with a larger range value can satisfy the functions of high beam ADB, low beam cutoff line and road sign projection at the same time, however, the design difficulty is increased by the wide range pixelated lighting module, which inevitably results in the increase of the manufacturing cost, and therefore, the upper and lower boundary angle difference of the pixelated light shape area of the present invention ranges from 5 ° to 8 °.

As another preferred embodiment of the present invention, the first primary optical element 231 and the second primary optical element 232 are light guiding elements.

More preferably, as shown in fig. 14 to 18, the first primary optical element 231 and the second primary optical element 232 respectively include a primary optical element light-in end 233, a primary optical element light channel 234 and a primary optical element light-out end 235 which are integrally formed from back to front, wherein a forming material of the primary optical element light-in end 233 is different from a forming material of the primary optical element light channel 234 and the primary optical element light-out end 235, and the primary optical element light-in ends 233 are disposed in one-to-one correspondence with the non-pixelated light sources 21.

Further preferably, the primary optical element light-in end 233 is a silicone molding, and the primary optical element light channel 234 and the primary optical element light-out end 235 are PC molding.

It should be noted that, although the primary optical element light-in end 233, the primary optical element light channel 234 and the primary optical element light-out end 235 are formed by different materials, the primary optical element light-in end 233, the primary optical element light channel 234 and the primary optical element light-out end 235 are formed as an integral piece, so that the first primary optical element 231 and the second primary optical element 232 have better optical performance, and meanwhile, the heat resistance of the silica gel is better than that of the PC, so that the heat resistance of the first primary optical element 231 and the second primary optical element 232 is better.

As another preferred embodiment of the present invention, the interface between the primary optical element light-entering end 233 and the primary optical element light channel 234 corresponding to the primary optical element light-entering end 233 is configured as a convex curved surface, so as to perform a better secondary light distribution function, so that the light is more concentrated, and the light-emitting effect is better.

As a specific structural form of the present invention, the light-emitting surface of the pixelated light-emitting lens 12 is set to be a convex curved surface, the light-emitting surface of the non-pixelated light-emitting lens 22 is set to be an extending curved surface, and the light-emitting surface of the pixelated light-emitting lens 12 and the light-emitting surface of the non-pixelated light-emitting lens 22 are connected to be smooth curved surfaces with continuous curvature, so that the light-emitting surface of the lighting module has good integrity and better shape.

As another specific structural form of the present invention, as shown in fig. 19, the pixelized lighting part 1 further includes an imaging lens group 13, where the imaging lens group 13 includes a first imaging lens 131 and a second imaging lens 132 sequentially arranged from back to front, the first imaging lens 131 is configured as a biconvex lens having an incident surface and an exit surface that are both convex curved surfaces, the second imaging lens 132 is configured as a convex-concave lens having an incident surface that is concave curved surface and an exit surface that is convex curved surface, and the pixelized light-emitting lens 12 is configured as a biconvex lens having an incident surface and an exit surface that are both convex curved surfaces.

In the invention, the first imaging lens 131 is arranged as a biconvex lens with positive refractive power, wherein the light incident surface and the light emergent surface are both convex curved surfaces, so that the focal length of the first imaging lens 131 is shorter and the diopter is higher, and the distance between the first imaging lens 131 and the pixelized light source 11 can be reduced; the second imaging lens 132 is a convex-concave lens with negative refractive power, wherein the light incident surface is a concave curved surface, the light emergent surface is a convex curved surface, the dispersion phenomenon generated after the light is refracted by the first imaging lens 131 can be counteracted and corrected, and the distance between the second imaging lens 132 and the pixelized light emergent lens 12 can be reduced; the pixelized light-emitting lens 12 is a biconvex lens with positive refractive power, wherein the light-in surface and the light-out surface are both convex curved surfaces, so that the distance between the biconvex lens and the second imaging lens 132 can be reduced, the front-back length dimension of the pixelized lighting part 1 can be effectively reduced, and the lighting module is small in size and low in manufacturing cost. The refractive power of the lens represents the ability of the lens to process light, positive refractive power represents the lens 'ability to converge incoming light, and negative refractive power represents the lens' ability to diverge incoming light. The matching mode of the first imaging lens 131, the second imaging lens 132 and the pixelated light-emitting lens 12 can effectively offset the dispersion in the light refraction process, so that the dispersion range of the pixel light shape is small, the imaging is clearer, and the light shape effect is good.

More specifically, the pixelated light source 11 is a plurality of LED light emitting units capable of independently controlling on/off.

In the present invention, when the pixelated light source 11 is configured as a plurality of LED light emitting units, a light pattern of the pixelated light pattern 100 formed by light emission of some LED light emitting units in one or more pixelated lighting units 1 may be used as a partial low beam light pattern, and a non-pixelated low beam light pattern 200 may be formed by one or more non-pixelated lighting units 2, and the partial low beam light pattern may be used in combination to form a complete light pattern for low beam lighting of a vehicle headlight.

The pixelated light source 11 is a plurality of LED light emitting units capable of controlling on/off independently. The pixelated light source 11 of the invention can be set as a plurality of LED light-emitting units capable of controlling on and off independently, and can be specifically LED particles or Micro LEDs which are arranged in a matrix, preferably a Micro LED light source, namely a Micro LED light source, wherein the size of each LED unit in the Micro LED light source is in a micron level, and the Micro LED light source is further preferably a rectangular array type LED light source composed of tens of thousands of micron level LED units; the miniature LED light source is selected to enable the pixel points to be smaller and denser, so that the definition of formed pixel images is higher, the light shape formed after the pixel images are projected out can be regulated and controlled with higher precision, the formed dark portion boundary and the change of the dark portion position are finer and smoother, people or drivers can be better prevented from being blinded or blinded, the miniature LED light source is in a rectangular array, the wider light shape can be obtained, the areas on two sides of a road are illuminated, and the observation of the drivers on the pedestrians and the road signs on the two sides of the road is facilitated.

On the basis of the lighting module, a third aspect of the invention provides a headlamp, which comprises the lighting module in any one of the second aspects. Therefore, the lamp has all the beneficial effects brought by the technical scheme of the embodiment of the lighting module, the formed light shape has high precision and good stability, no dark area exists when the low beam lighting light shape and the high beam lighting light shape are converted, the lighting light shape effect is good, the occupied space of the lamp body is small, and the manufacturing cost is low.

Further, the vehicle according to the fourth aspect of the present invention, including the headlamp according to the third aspect of the present invention, also has all the advantages brought by the technical solutions of the embodiments of the lighting module described above.

As can be seen from the above description, the light shape adjusting method of the lighting module of the present invention adjusts the upper and lower boundaries of the pixelated light shape 100 in the low beam lighting mode and the high beam lighting mode, so as to make the lighting effect better. In addition, the illumination module of the present invention sets the pixelated illumination portion 1 and the non-pixelated illumination portion 2 in the same module, and by combining the first primary optical element 231 and the second primary optical element 232 or combining a plurality of first primary optical elements 231, the illumination module of the pixelated illumination shape 100 can form a light shape which supplements the dark area 300 in the up-down adjustment process of the pixelated illumination shape 100, optimize the light emitting effect, and make the illumination effect of the pixelated illumination shape 100 with a narrower upper-lower boundary angle difference range good, and the illumination module of the pixelated illumination shape 100 has a simple structure and low production cost.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.

Claims

A light pattern adjustment method of a lighting module, the light pattern of the lighting module comprising a pixelated light pattern (100) and a non-pixelated light pattern (200), characterized in that the range of the difference in angle between the upper and lower boundaries of the pixelated light pattern (100) is 5 ° -8 °, the light pattern adjustment method of the lighting module comprising adjusting the position of the pixelated light pattern (100) such that in a low beam lighting mode the angular range of the lower boundary of the pixelated light pattern (100) is-8 °, less than-4 °, the angular range of the upper boundary is 0 °, less than or equal to 3 °; in the high beam illumination mode, the angle range of the lower boundary of the pixelated light pattern (100) is equal to or greater than-3 DEG and equal to or less than-1 DEG, and the angle range of the upper boundary is equal to or greater than 4 DEG and equal to or less than 8 deg.
A lighting module capable of adopting the light shape adjustment method according to claim 1, characterized by comprising at least one pixelated lighting part (1) and at least one non-pixelated lighting part (2), wherein the pixelated lighting part (1) comprises a pixelated light source (11) and a pixelated light-emitting lens (12), the non-pixelated lighting part (2) comprises a non-pixelated light source (21), a non-pixelated primary optical element (23) and a non-pixelated light-emitting lens (22) in turn along a light-emitting direction, the pixelated light-emitting lens (12) and the non-pixelated light-emitting lens (22) are integrally formed, the pixelated lighting part (1) is capable of being projected to form the pixelated light shape (100), the non-pixelated lighting part (2) is capable of being projected to form the non-pixelated light shape (200), wherein

The non-pixelated primary optical element (23) comprises a first primary optical element (231) and a second primary optical element (232), the first primary optical element (231) and the second primary optical element (232) being arranged in an up-down direction, the first primary optical element (231) being adapted to form a low beam broadening light shape, the second primary optical element (232) being adapted to form a light shape complementing the dark area (300); or alternatively

The non-pixelated primary optical element (23) comprises two first primary optical elements (231), wherein the first primary optical elements (231) are arranged on two sides of the pixelated illumination part (1), and the lower boundary of the light emitting surface of the first primary optical element (231) on one side is positioned below the lower boundary of the light emitting surface of the first primary optical element (231) on the other side.
A lighting module according to claim 2, characterized in that the first primary optical element (231) and the second primary optical element (232) are integrally formed.
A lighting module as claimed in claim 3, characterized in that the first primary optical element (231) and the second primary optical element (232) comprise a primary optical element light-entering end (233), a primary optical element light-emitting end (235) and a primary optical element light-channel (234) which are integrally formed from back to front, respectively, the forming material of the primary optical element light-entering end (233) being different from the forming material of the primary optical element light-emitting end (235) and the primary optical element light-entering end (233) being arranged in one-to-one correspondence with the non-pixelated light source (21).
A lighting module as recited in claim 4, wherein said primary optical element light-in end (233) is a silicone molding, and said primary optical element light channel (234) and said primary optical element light-out end (235) are PC molding.
A lighting module as claimed in claim 5, characterized in that the interface between the primary optical element light entry end (233) and the primary optical element light channel (234) corresponding to the primary optical element light entry end (233) is provided as a forwardly convex curved surface.
A lighting module as recited in any one of claims 2-6, wherein the light exit surface of the pixelated light exit lens (12) is configured as a convex curved surface, and the light exit surface of the pixelated light exit lens (12) and the light exit surface of the non-pixelated light exit lens (22) are connected as a smooth curved surface with continuous curvature.
A lighting module as claimed in any one of claims 2 to 6, wherein the pixelated lighting part (1) further comprises an imaging lens group (13), the imaging lens group (13) comprises a first imaging lens (131) and a second imaging lens (132) which are sequentially arranged from back to front, the first imaging lens (131) is arranged as a biconvex lens with a light incident surface and a light emergent surface having convex curved surfaces, the second imaging lens (132) is arranged as a convex-concave lens with a light incident surface having concave curved surfaces and a light emergent surface having convex curved surfaces, and the pixelated light emergent lens (12) is arranged as a biconvex lens with a light incident surface and a light emergent surface having convex curved surfaces.
A lighting module according to any one of claims 2 to 6, characterized in that the pixelated light source (11) is a plurality of LED lighting units capable of independently controlling on and off.
A headlamp comprising a lighting module according to any one of claims 2 to 9.
A vehicle comprising a headlamp according to claim 10.