WO2020199838A1

WO2020199838A1 - Dipped light distribution structure for automobile

Info

Publication number: WO2020199838A1
Application number: PCT/CN2020/077867
Authority: WO
Inventors: 郭壮柱; 郭青杰; 杨阳; 邱询青; 刘兴
Original assignee: 曼德电子电器有限公司
Priority date: 2019-03-29
Filing date: 2020-03-05
Publication date: 2020-10-08
Also published as: CN209944211U; DE112020001664T5

Abstract

A dipped light distribution structure for an automobile is used to configure light beams emitted by light sources into dipped beams. There are at least two light sources arranged in a sequential order. The dipped light distribution structure for an automobile comprises a first inner lens (1) used to create a light-dark cutoff boundary of a transmitted beam, a second inner lens (2) arranged at a downstream position of a beam transmission path of the first inner lens (1), and an outer lens (3) arranged at a downstream position of a beam transmission path of the second inner lens (2). The dipped light distribution structure employs an optical output end of a lens, namely an optical surface of the lens, to form a light-dark cutoff boundary, such that a stopping plate is not required, thereby overcoming the shortcoming of using a stopping plate, enabling a light distribution structure to be fabricated in various sizes, and meeting the requirements of vehicle lamps having different shapes.

Description

Vehicle low beam light distribution structure

Technical field

The present invention relates to the technical field of vehicle lights, in particular to a vehicle low beam light distribution structure.

Background technique

With the development of the light source of automobile lamps, the light distribution structure of automobile lamps has also developed rapidly. From the early halogen lamp to the later xenon lamp, to the current LED and laser light source, the lamp becomes more intelligent, and The shape is also more differentiated. Among various lamp light sources, LED light sources are gradually getting the attention of the majority of automobile manufacturers due to their excellent performance and low cost advantages. With the development of LED light sources, their light distribution structure is gradually developing, starting from the reflective bowl From the form of reflecting bowl and lens to the current pure lens form, the light distribution method of automobile lamps is also more diverse.

Nowadays, most of the automotive lamps are pure reflection, reflection plus projection, and pure projection optical solutions. Among them, pure reflection and reflection plus projection solutions are more common, and there are not many pure projection solutions. Moreover, for the low-beam light distribution module of car lights, the low-beam type is mostly realized by the baffle. Due to the existence of the baffle, the overall size of the module is limited to a certain extent, and it is difficult to make the low-beam module more refined. Meet the requirements of the differentiation of car lights.

Summary of the invention

In view of this, the present invention aims to propose a vehicle low beam light distribution structure to overcome the shortcomings of the existing baffle form and meet the requirements of vehicle lamp modeling differentiation.

In order to achieve the above objective, the technical solution of the present invention is achieved as follows:

A vehicle low-beam light distribution structure is used to configure the configuration of light beams emitted by a light source to form a low-beam type, the light sources are at least two arranged in sequence, and the vehicle low-beam light distribution structure includes:

A first inner lens, the first inner lens having a number of first optical input ends matching the light source and receiving the light beam emitted by the light source, and a first optical output end for outputting the light beam from the first inner lens , At least two of the first optical input ends are configured to respectively perform collimated transmission and convergent transmission of the received light beams, and the first optical output ends are configured to form a cut-off contour in the transmitted light beam;

The second inner lens, the second inner lens is located downstream of the beam transmission path of the first inner lens to converge the transmitted light beam, and the second inner lens has a second optical input for receiving the transmitted light beam End and a second optical output end for beam outputting the second inner lens;

An outer lens, the outer lens is located downstream of the beam transmission path of the second inner lens, and the outer lens has a third optical input end for receiving the transmitted beam and a third optical for outputting the outer lens The output terminal.

Further, the outer lens includes a main body that houses the first inner lens and the second inner lens, and an optical part constructed on the main body. The third optical input end and the third optical The output ends are constructed on two opposite sides of the optical part.

Further, the first optical input end includes a recess that is recessed inwardly on the first inner lens, and a protrusion constructed at the bottom of the recess and protruding toward the opening of the recess; and In the two sets of the first optical input ends for collimating transmission and converging transmission of the received light beam, the protrusion heights of the protrusions are different, and the size of the cross section orthogonal to the light beam transmission direction of the first optical input end is different .

Further, the first optical output end is a planar first light-emitting surface formed on the first inner lens.

Further, the second optical input end is a planar second light incident surface formed on the second inner lens and arranged opposite to the first light exit surface.

Further, the second optical output end includes a number of arc-shaped convex second light output surfaces matching the number of the first optical input end, and there is a one-to-one relationship between the second light output surface and the first optical input end. Corresponding arrangement.

Further, the third optical input end includes a third light incident surface provided corresponding to the first optical input end for converging and transmitting the light beam, and the first optical input end for collimating and transmitting the light beam Corresponding to the fourth light incident surface, the third optical output end includes an arc-shaped convex third light output surface formed on the outer lens; the fourth light incident surface follows the shape of the third light output surface The third light-incident surface is an arc-shaped surface protruding to one side of the second inner lens.

Further, there are two first optical input ends for collimated transmission and convergent transmission of light beams respectively, and the third light incident surface is corresponding to the first optical input end for convergent transmission of light beams. Two, and are arranged in a one-to-one correspondence with the two first optical input ends for converging and transmitting light beams.

Further, the first inner lens is provided with a mounting post, the second inner lens is provided with a through hole for the mounting post to pass through, and the outer lens is provided with an inserting fit with the mounting post To install the first inner lens and the second inner lens mounting holes.

Further, the outer lens is provided with a fixing hole for fixing the outer lens on the outer member, and the fixing hole is adjacent to the mounting hole.

Compared with the prior art, the present invention has the following advantages:

The low-beam light distribution structure of the vehicle of the present invention uses the optical output end of the lens and the optical surface of the lens to form a cut-off contour, thus the baffle can be eliminated, which can overcome the shortcomings of the existing baffle form, and make the light distribution Structural model size changes are more feasible to meet the requirements of vehicle lamp model differentiation.

In addition, the vehicle low-beam light distribution structure of the present invention can improve the overall delicacy of the light distribution structure by mounting the first inner lens and the second inner lens on the outer lens, and the structural design of the first optical input end can achieve the The collection of light beams emitted by the light source to reduce beam loss. The arrangement of the optical input end and output end of the outer lens can make the resulting low-beam type with a bright and dark cut-off profile better, and the matching installation form of the mounting post and the mounting hole can facilitate the installation of the lens.

Description of the drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and the description thereof are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

FIG. 1 is an overall schematic diagram of a light distribution structure according to an embodiment of the present invention;

2 is a schematic diagram of the structure of the first inner lens according to an embodiment of the present invention;

3 is a cross-sectional view of the first optical input end according to an embodiment of the present invention;

4 is a schematic diagram of the difference between the two groups of first optical input terminals according to an embodiment of the present invention;

Fig. 5 is a rear view of the first inner lens according to an embodiment of the present invention;

6 is a schematic diagram of light beam transmission of the first inner lens according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a second inner lens according to an embodiment of the present invention;

8 is a schematic diagram of light beam transmission of the second inner lens according to an embodiment of the present invention;

9 is a schematic diagram of the structure of an outer lens according to an embodiment of the present invention;

Fig. 10 is a front view of an outer lens according to an embodiment of the present invention;

Figure 11 is a cross-sectional view along the A-A direction in Figure 10;

12 is a light path diagram of the light beam corresponding to the first optical input end of the converging group in the light distribution structure according to the embodiment of the present invention;

FIG. 13 is a light pattern diagram of a light distribution structure according to an embodiment of the present invention;

Description of reference signs:

1- first inner lens, 2- second inner lens, 3- outer lens;

101-first optical input end, 102-first optical output end, 103-contour line, 104-mounting post;

201-second optical input terminal, 202-second optical output terminal, 203-via hole, 204-through hole;

301-main body, 302-optical part, 303-mounting hole, 304-fixing hole;

1010-notch, 1011-convex, 1012-first optical surface, 1013-second optical surface, 1014-third optical surface;

3021-third optical input end, 3022-third optical output end, 30211-third light incident surface, 30212-fourth light incident surface.

detailed description

It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.

Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

This embodiment relates to a vehicle low-beam light distribution structure, which is used to form a configuration of the light beam emitted by the light source to form a low-beam type. Among them, the light sources matched with the light distribution structure design of this embodiment are at least two arranged in sequence, and in this embodiment, four light sources are used for description, and the light sources are generally LED particles. At the same time, referring to FIG. 1, the vehicle low beam light distribution structure of this embodiment as a whole includes a first inner lens 1, a second inner lens 2 and an outer lens 3, and passes through the two inner lenses and the outer lens. The cooperation of the lenses forms a pure projection lens optical solution.

For the two inner lenses and the outer lens 3 of this embodiment, specifically, as shown in FIG. 2 first, the first inner lens 1 has a number of light sources that matches the number of light sources not shown in the figure to receive the light emitted by the light source. The first optical input end 101 of the light beam, and the first optical output end 102 of the first inner lens 1 for the light beam output. The four first optical input terminals 101 are arranged as two groups for collimating transmission and converging transmission of the received light beams, and each group has two first optical input terminals 101. In addition, matching the arrangement of the two sets of first optical input ends 101 for collimated transmission and convergent transmission respectively, the first inner lens 1 of this embodiment can also be used in the transmitted light beam due to the arrangement of the first optical output ends 102 Form a cut-off contour.

Wherein, in conjunction with what is shown in FIG. 3, the first optical input end 101 on the first inner lens 1 of this embodiment specifically includes a notch 1010 that is recessed on the end of the first inner lens 1 and is configured on the notch 1010. The protrusion 1011 at the bottom that protrudes toward the opening of the recess 1010, the shape of the recess 1010 and the protrusion 1011 can be as shown in FIG. 3. At the same time, a first optical surface 1012 is formed on the outer wall of the protrusion 1011 for the partial light beam of the light source to enter the first inner lens 1, and a side wall of the recess 1010 is formed to refract other light beams from the light source. The second optical surface 1013 corresponds to the second optical surface 1013. A third optical surface 1014 that totally reflects the light beam refracted by the second optical surface 1013 is also formed on the outer wall of the first inner lens 1.

In this embodiment, through the arrangement of notches 1010, protrusions 1011 and three optical surfaces, the first optical input end 101 can collect most of the light beams emitted by the light source through the first optical surface 1012, and the second optical surface 1013 Other light beams emitted by the light source can be refracted, and then totally reflected by the third optical surface 1014 after being refracted. This can basically realize the full utilization of the light beams emitted by the light source. Compared with the optical input end structure of the existing lens, it can achieve The purpose of improving light source beam utilization.

It should be pointed out that the three optical surfaces in the first optical input end 101 can obtain the required light type through the cooperation of the curvature characteristics between each other. Of course, according to the actual low beam design requirements, the specific curvature characteristics between the above three optical surfaces can be selected during the design, and will not be repeated here.

Based on the above description of the first optical input terminal 101, referring to FIG. 4, in this embodiment, in the two sets of first optical input terminals 101 that perform collimated transmission and convergent transmission of the received light source beam, one of them is The protrusion height of the protrusion 1012 of the first optical input end 101 is different from the protrusion height of the protrusion 1012 of the other group of the first optical input end 101, and there is a height difference t between the two groups. The cross-sectional size (ie, the outer diameter) of the end 101 orthogonal to the light beam transmission direction is different. Through the above-mentioned structural difference, different optical functions of collimating or converging the light beam are realized.

In this embodiment, the height difference t of the protrusions 1012 in the two sets of first optical input ends 101 and the outer diameters of the cross sections of the two sets of first optical input ends 101 with different sizes can be selected according to actual needs. In this way, the beam processing effect of the first inner lens 1 as described below can be realized.

In this embodiment, the first optical output end 102 is specifically a planar first light-emitting surface formed on the first inner lens 1. As shown in FIGS. 2, 5, and 12, the first light-emitting surface is disposed on the One end of the first inner lens 1 having the first optical output end 102, a gap is formed under the first light-emitting surface, and referring to FIGS. 6 and 12, the first optical input end 101 (ie, the pair of The focal point of the input light beam of the first optical input end 101 where the light beam is converged and transmitted is located on the bottom boundary of the first optical surface (ie the contour line 103). The contour line 103 is the dividing line between the first optical surface and the lower gap, and the contour line 103 is formed so that the first inner lens 1 produces a preliminary light pattern with cut-off light and dark.

The shape of the contour line 103 determines the shape of the output light beam. In this embodiment, the contour line 103 is specifically set in the form of a broken line. As shown in Figure 6, the two sets of first optical input ends 101 form collimated transmission (ie, substantially parallel transmission) and convergent transmission of the beam. The planar first light-emitting surface does not change the transmission of the parallel beam, but will Disperse the angled beam. At the same time, because the contour line 103 is inverted with respect to the low-beam cutoff contour, the beams of the converging group are focused on the contour line 103, and then inverted on the first light exit surface after focusing, so that the corresponding beams form a corresponding Optical shape.

The second inner lens 2 of this embodiment is located downstream of the beam transmission path of the first inner lens 1 to converge the transmitted light beam. As shown in FIG. 7, the second inner lens 2 has a function for receiving the first inner lens. The second optical input end 201 of the light beam transmitted from the lens 1 and the second optical output end 202 for outputting the light beam from the second inner lens 2.

Specifically, the second optical input end 201 is a second light incident surface formed on the second inner lens 2, and the second light incident surface is a planar structure arranged opposite to the first light output surface. The second optical output end 202 includes arc-shaped convex second light output surfaces that match the first optical input end 101 in number, and each second light output surface is arranged in a one-to-one correspondence with the first optical input end 101. The beam transmission of the second inner lens 2 is shown in Fig. 8. The planar second light entrance surface also does not change the parallel beams, but converges the angled beams so that the beams enter the second inner lens. 2 in. Then, after converging the light beams through the second light-emitting face, the light beams of the converging group (that is, the light beams corresponding to the first optical input end 101 for converging and transmitting the light beams) become approximately parallel, and the light beams of the collimating group ( That is, the light beam corresponding to the first optical input end 101 for collimating and transmitting the light beam) becomes convergent, so that the preliminary optical shaping generated by the first inner lens 1 can be realized.

The outer lens 3 of this embodiment is located downstream of the beam transmission path of the second inner lens 2. As shown in FIG. 9, the outer lens 3 also has a third optical input end 3021 for receiving the light beam output by the second inner lens 2. , And the third optical output end 3022 of the outer lens 3 for beam output. In detail, the outer lens 3 of this embodiment structurally includes a main body 301 for holding the first inner lens 1 and the second inner lens 2 and an optical part 302 configured on the main body 301. The optical processing function of the outer lens 3 is implemented by the optical part 302, and the above-mentioned third optical input end 3021 and the third optical output end 3022 are constructed on two opposite sides of the optical part 302.

Wherein, in combination with those shown in FIG. 10 and FIG. 11, the third optical input end 3021 includes a set corresponding to the first optical input end 101 (that is, the two first optical input ends 101 of the convergence group) for converging and transmitting the light beam. The third light-incident surface 30211, and the fourth light-incident surface 30212 corresponding to the two first optical input ends 101 for collimating and transmitting light beams. At the same time, the third light incident surface 30211 is two sets corresponding to the first optical input end 101 of the converging group, and is arranged in a one-to-one correspondence with the corresponding first optical input end 101, while the third optical input end 101 of this embodiment The output end 3022 includes an arc-shaped and convex third light-emitting surface formed on the outer lens 3.

In this embodiment, the fourth light-incident surface 30212 is specifically conformed to the third light-emitting surface, and the third light-incident surface 30211 is an arc-shaped surface that protrudes toward the second inner lens 2 side. Through the above-mentioned conformal arrangement, that is, the curvature of the fourth light-incident surface 30212 and the third light-emitting surface are the same, so that the part of the optical portion 302 corresponding to the fourth light-incident surface 30212 is formed into a structure of equal thickness. Part of it has no optical effect on the beam, and the convex third light entrance surface 30211 can realize further converging processing of the beam, so that the beam of the converging group can be converged through the outer lens 3, which can improve the low beam type. The brightness at the cut-off contour. The beam transmission of the outer lens 3 is as shown in FIG. 11.

In this embodiment, both inner lenses are installed on the outer lens 3, which can improve the overall delicacy of the light distribution structure. In terms of the specific installation form, as a preferred way, the first inner lens 1 is arranged There is a mounting post 104. The second inner lens 2 is provided with a through hole 203 through which the mounting post 104 can pass. The outer lens 3 is provided with a mounting hole 303 for inserting and mating with the mounting post 104. The column passes through the through hole 203 and is inserted and fixed in the mounting hole 303 to realize the fixed installation of the two inner lenses.

In addition to the mounting hole 303, this embodiment facilitates the overall installation of the light distribution structure. The outer lens 3 may also be provided with a fixing hole 304 for fixing the outer lens 3 to an external component. The fixing hole 304 is adjacent to the mounting hole 303 through The fixing method of the fixing hole 304 can refer to the existing conventional technology. In addition, in order to further improve the refinement of the light distribution structure and reduce the loss of light beams, in this embodiment, the main body 301 of the outer lens 3 can also be constructed with a receiving groove as shown in FIG. 9, and the optical portion 302 constitutes the groove of the receiving groove. At the end, the end of the second inner lens 2 with the second optical output end 202 can be partially received in the accommodating groove.

In the light distribution structure of this embodiment, the optical path diagram of the light beam corresponding to the first optical input end 101 of the converging group is shown in FIG. 12, and the overall light pattern of the light distribution structure is shown in FIG. The light pattern as a whole is composed of light pattern 1 and light pattern 2. Each light pattern is generated by a combination of multiple beams. Light pattern 1 forms a light pattern at the near-bright and dark cut-off contour, which is smaller than light pattern 2, but is smaller than light pattern 2. Light type 2 has a high illuminance value, which can improve the lighting effect directly in front of the vehicle. Light type 2 forms a light type with a widened portion to increase the widening range of the low-beam light type, thereby illuminating objects in the front two sides of the vehicle.

The above descriptions are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.

Claims

A vehicle low-beam light distribution structure is used to form a configuration of light beams emitted by a light source to form a low-beam type, characterized in that: the light sources are at least two arranged in sequence, and the vehicle low-beam distribution structure The light structure includes:

The first inner lens (1), the first inner lens (1) has a number of first optical input ends (101) matching the light source and receiving the light beam emitted by the light source, and the first optical input end (101) for outputting the light beam The first optical output end (102) of an inner lens (1), at least two of the first optical input ends (101) are arranged as two sets of collimated transmission and convergent transmission of the received light beams, the first An optical output end (102) is configured to form a cut-off contour in the transmitted light beam;

The second inner lens (2), the second inner lens (2) is located downstream of the beam transmission path of the first inner lens (1) to converge the transmitted beam, and the second inner lens ( 2) Having a second optical input end (201) for receiving the transmitted light beam and a second optical output end (202) for outputting the second inner lens (2) of the light beam;

The outer lens (3), the outer lens (3) is located downstream of the beam transmission path of the second inner lens (2), and the outer lens (3) has a third optical input end ( 3021) and a third optical output end (3022) for beam outputting the outer lens (3).
The vehicle low beam light distribution structure according to claim 1, characterized in that: the outer lens (3) comprises a main body (1) that houses the first inner lens (1) and the second inner lens (2). 301), and an optical part (302) constructed on the main body (301), the third optical input end (3021) and the third optical output end (3022) are constructed on the optical part (302) The two opposite sides.
The vehicle low-beam light distribution structure according to claim 2, wherein the first optical input end (101) includes a notch (1010) that is recessed on the first inner lens (1), and The protrusions (1012) constructed at the bottom of the recess (1010) and protruding toward the opening of the recess (1010); and in the two sets of the first groups that collimate and transmit the received light beams In an optical input end (101), the protrusion heights of the protrusions (1012) are different, and the size of the cross section orthogonal to the light beam transmission direction of the first optical input end (101) is different.
The vehicle low beam light distribution structure according to claim 3, characterized in that: the first optical output end (102) is a flat first light-emitting surface formed on the first inner lens (1) .
The vehicle low beam light distribution structure according to claim 4, characterized in that: the second optical input end (201) is formed on the second inner lens (2) and is opposite to the first light exit surface The second light incident surface is arranged in a planar shape.
The vehicle low beam light distribution structure according to claim 5, characterized in that: the second optical output end (202) comprises arc-shaped convex second optical output ends (101) whose number matches the first optical input end (101). Light-emitting surface, and the second light-emitting surface and the first optical input end (101) are arranged in a one-to-one correspondence.
The vehicle low-beam light distribution structure according to claim 6, wherein the third optical input end (3021) includes a first optical input end (101) that is arranged corresponding to the first optical input end (101) for converging and transmitting light beams. Three light-incident surfaces (30211), and a fourth light-incident surface (30212) corresponding to the first optical input end (101) for collimating and transmitting the light beam, and the third optical output end (3022) includes An arc-shaped convex third light-emitting surface formed on the outer lens (3); the fourth light-incident surface (30212) follows the shape of the third light-emitting surface, and the third light-incident surface (30211) ) Is an arc-shaped surface protruding to one side of the second inner lens (2).
The vehicle low beam light distribution structure according to claim 6, characterized in that there are two first optical input ends (101) for collimated transmission and convergent transmission of light beams, and the third light entrance surface (30211) are two sets corresponding to the first optical input ends (101) for converging and transmitting light beams, and corresponding to the two first optical input ends (101) for converging and transmitting light beams one-to-one Layout.
The vehicle low beam light distribution structure according to any one of claims 2 to 8, characterized in that: the first inner lens (1) is provided with a mounting post (104), and the second inner lens (2) ) Is provided with a through hole (203) for the mounting post (104) to pass through, and the outer lens (3) is provided with a plug-in fit with the mounting post (104) to install the first inner The lens (1) and the mounting hole (303) of the second inner lens (2).
The vehicle low beam light distribution structure according to claim 9, characterized in that: the outer lens (3) is provided with a fixing hole (304) for fixing the outer lens (3) to an external member, and the The fixing hole (304) is adjacent to the mounting hole (303).