Motor vehicle headlight system

Abstract

A motor vehicle headlight system comprises first and second motor vehicle headlights, wherein each motor vehicle headlight comprises a first and a second light module, wherein the first light module comprises luminous pixels and is configured to generate a first light distribution (100), and wherein the second light module comprises luminous pixels and is configured to generate a second light distribution (200), wherein each light distribution (100, 200) is composed of a plurality of pixel light segments (101, 201), wherein a pixel light segment (101, 201) is assigned to a luminous pixel and can be generated by the luminous pixel, wherein Each light distribution (100, 200) is configured to: generate a first pixel light segment group (110, 210) having a first column width (110a, 210a); generate a second pixel light segment group (120, 220) having a second column width (120a, 220a), the second column width corresponding to 1 / 2 of the first column width (110a, 210a); and generate a third pixel light segment group (130, 230) having a third column width (130a, 230a), wherein, in the first light distribution (100), in the vertical direction, the second column width is The first pixel light segment group (110) is arranged above the pixel light segment group (120) and the third pixel light segment group (130) is arranged below the second pixel light segment group, and the second light distribution (200) is arranged in a vertical mirror image relative to the first light distribution (100), wherein the first motor vehicle headlamp is designed so that the first and second light distributions (100, 200) overlap with a vertical offset (301) of half the third gap height (130b, 230b) to form a first headlamp light distribution (310), which In the embodiment of the present invention, the second motor vehicle headlight is designed so that the first and second light distributions (100, 200) overlap when forming a second headlight light distribution (320), wherein the second headlight light distribution (320) is horizontally mirrored relative to the first headlight light distribution (310), and wherein the first headlight light distribution (310) and the second headlight light distribution (320) are arranged to overlap each other with a horizontal offset (401) of 1 / 2 of the first gap width (110a, 210a) when forming a motor vehicle headlight system light distribution (400).

Description

Technical Field

[0001] The present invention relates to a motor vehicle headlight system, comprising a first and a second motor vehicle headlight, wherein each motor vehicle headlight comprises a first and a second light module, wherein the first light module comprises luminous pixels arranged in a matrix of rows and columns and is configured to generate a first light distribution before the motor vehicle headlight system by emitting light from the individual luminous pixels, and wherein the second light module comprises luminous pixels arranged in a matrix of rows and columns and is configured to generate a second light distribution before the motor vehicle headlight system by emitting light from the individual luminous pixels, wherein each light distribution is formed from a plurality of pixel light segments, wherein a pixel light segment is assigned to a luminous pixel and can be generated by the luminous pixel. Background Art

[0002] In the prior art, light emitting diodes (LEDs) are usually used to generate one or more light distributions. These light emitting diodes or LEDs are arranged in a matrix-like manner in rows and columns, wherein the light emitting diodes or LEDs can also serve as pixels or luminous pixels.

[0003] To achieve higher resolution in the light distribution, i.e., the pixels contained in the light distribution (also called pixel light segments), the number of light-emitting diodes or LEDs is increased and / or the size of the LEDs is further reduced, in order to achieve higher resolution within the same installation space. However, this results in a high electronic complexity due to the large number of pixels or LEDs to be controlled.

[0004] Furthermore, when using a single light module, the intensity of the individual LEDs generating the light distribution must also be high in order to achieve the required legal intensity. This leads in particular to high temperatures within the light module or LED array, which in turn require extensive cooling. Furthermore, when generating light distributions such as low-beam and / or high-beam, the legal light distribution width or field of view (also known as "Field of View") must be adhered to. This is disadvantageous when implemented using a single light module due to the increased electronic complexity and heat buildup. Summary of the Invention

[0005] An object of the present invention is to provide an improved motor vehicle headlamp system.

[0006] This object is achieved in that each light distribution is configured such that

[0007] - generating a first group of pixel light segments, which are arranged in a matrix-like manner in rows and columns having a first column width and a first column height,

[0008] - generating a second group of pixel light segments, which are arranged in a matrix-like manner in rows and columns having a second column width and a second row height, wherein the second column width corresponds to half the first column width,

[0009] - generating a third group of pixel light segments, which is arranged in a matrix-like manner in rows and columns having a third column width and a third row height, the third column width corresponding to the first column width,

[0010] In the first light distribution of the first light module, the pixel light segment groups are arranged one above the other in a vertical direction, wherein the first pixel light segment group is arranged above the second pixel light segment group in the vertical direction, and the third pixel light segment group is arranged below the second pixel light segment group in the vertical direction.

[0011] The second light distribution of the second light module is arranged in a vertical mirror image with respect to the first light distribution, so that the third pixel light segment group is arranged above the second pixel light segment group in the vertical direction, and the first pixel light segment group is arranged below the second pixel light segment group in the vertical direction.

[0012] wherein the first and second light modules of the first motor vehicle headlight are designed and arranged relative to one another such that the first and second light distributions of the first motor vehicle headlight are arranged at least partially overlapping one another with a vertical offset of half the second row height to form a first headlight light distribution,

[0013] and wherein the first and second light modules of the second motor vehicle headlight are designed and arranged relative to one another such that the first and second light distributions of the second motor vehicle headlight overlap at least in sections, forming a second headlight light distribution, wherein the second headlight light distribution is horizontally mirrored relative to the first headlight light distribution,

[0014] And wherein the first and second motor vehicle headlights are set up and arranged relative to each other so that a first headlight light distribution of the first motor vehicle headlight and a second headlight light distribution of the second motor vehicle headlight overlap each other with a horizontal offset of half a first pixel width to form a motor vehicle headlight system light distribution.

[0015] By superimposing identical but mirrored light distributions or parts of the light distribution, not only the field of view can be improved, but also the resolution and homogeneity of the overall light distribution or the light distribution of a motor vehicle headlight system can be improved. This can, in particular, produce sharp light-dark boundaries, even though the resolution of the individual light modules would be too low.

[0016] It can be provided that the first and second light modules of the first motor vehicle headlight are designed and arranged relative to one another so that the first and second light distributions of the first motor vehicle headlight additionally overlap one another at least in sections with a horizontal offset of at least one quarter of the first column width.

[0017] In this case, provision can be made for the horizontal offset to be a multiple of one quarter of the width of the first column.

[0018] It may be provided that the first group of pixel light segments has a first row height, the second group of pixel light segments has a second row height, and the third group of pixel light segments has a third row height, wherein the row heights differ from one another.

[0019] It can be provided that the first row height is greater than the second row height and the third row height, and wherein the third row height is greater than the second row height.

[0020] It may be provided that the light pixels of the first and second light modules are formed by LEDs.

[0021] It can be provided that the maximum number of luminous pixels of the light module is 400.

[0022] It may be provided that the luminous pixels of the first and second light modules are designed as MiniLEDs.

[0023] A distinction must be made here between MicroLEDs and MiniLEDs. MicroLEDs are an order of magnitude smaller than MiniLEDs, with MiniLEDs generally being in the 100 μm range.

[0024] Micro-LEDs are generally more difficult to manufacture and therefore more expensive. In contrast, MiniLEDs are much easier to manufacture.

[0025] It may be provided that the motor vehicle headlight system comprises a control device which is designed to actuate the luminous pixels of the first and second light modules, wherein the luminous pixels are actuable independently of one another.

[0026] It may be provided that the control device is designed to actuate the luminous pixels of the first and second light modules in such a way that a low-beam and / or high-beam distribution can be generated in the light distribution of the motor vehicle headlight system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The invention is explained in more detail below with reference to exemplary drawings.

[0028] Figure 1 shows an exemplary first and second light distribution of a first or second motor vehicle headlight,

[0029] Figure 2 shows an exemplary first headlight light distribution which can be produced by superimposing a first and a second light distribution of a first motor vehicle headlight,

[0030] Figure 3 shows an exemplary second headlight light distribution which can be produced by superimposing the first and second light distributions of a second motor vehicle headlight,

[0031] Figure 4 An exemplary light distribution of a motor vehicle headlamp system is shown, which can be obtained by superimposing the light from Figure 2 and 3 The first and second headlamp light distributions are generated. DETAILED DESCRIPTION

[0032] Figure 1 Exemplary first and second light distributions 100, 200 of a motor vehicle headlight system having first and second motor vehicle headlights are shown, wherein each motor vehicle headlight comprises a first and a second light module, the first light module having luminous pixels arranged in a matrix of rows and columns and being configured to generate the first light distribution 100 before the motor vehicle headlight system by emitting light from the individual luminous pixels, and the second light module having luminous pixels arranged in a matrix of rows and columns and being configured to generate the second light distribution 200 before the motor vehicle headlight system by emitting light from the individual luminous pixels.

[0033] In this case, the luminous pixels of the light module are designed as MiniLEDs and their number in one light module does not exceed 400.

[0034] In this case, each light distribution 100 , 200 is formed by a plurality of pixel light segments 101 , 201 , wherein each pixel light segment 101 , 201 is assigned to a luminous pixel and can be generated by the luminous pixels.

[0035] Furthermore, each light distribution pattern 100, 200 is configured to generate a first group of pixel light segments 110, 210 arranged in a matrix in rows and columns having a first column width 110a, 210a, a second group of pixel light segments 120, 220 arranged in a matrix in rows and columns having a second column width 120a, 220a, wherein the second column width 120a, 220a corresponds to half the first column width 110a, 210a, and a third group of pixel light segments 130, 230 arranged in a matrix in rows and columns having a third column width 130a, 230a, which corresponds to the first column width 110a, 210a.

[0036] Furthermore, the first group of pixel light segments 110, 210 has a first row height 110b, 210b, the second group of pixel light segments 120, 220 has a second row height 120b, 220b, and the third group of pixel light segments 130, 230 has a third row height 130b, 230b, wherein, in the example shown, the first row height 110b, 210b is greater than the second and third row heights 120b, 220b, 130b, 230b, and wherein the third row height 130b, 230b is greater than the second row height 120b, 220b.

[0037] like Figure 1 As can be seen in FIG, the pixel light segment groups 110, 120, 130 are arranged vertically one above the other in the first light distribution 100 of the first light module, wherein the first pixel light segment group 110 is arranged vertically above the second pixel light segment group 120, and the third pixel light segment group 130 is arranged vertically below the second pixel light segment group 120.

[0038] Furthermore, it can be seen that the second light distribution 200 of the second light module is arranged in a vertically mirrored manner relative to the first light distribution 100 , so that the third pixel light segment group 230 is arranged above the second pixel light segment group 220 in the vertical direction, and the first pixel light segment group 210 is arranged below the second pixel light segment group 220 in the vertical direction.

[0039] It should be noted that terms or orientations such as "vertical" and "horizontal" relate to the motor vehicle headlamp system that is installed as intended in the motor vehicle. Furthermore, those skilled in the art in motor vehicle headlamp technology generally know how to interpret these terms, since the light distribution and orientation of a motor vehicle headlamp are determined on a defined measurement screen, which, according to ECE guidelines, is 25 meters from the motor vehicle headlamp or motor vehicle headlamp system to be measured. Similarly, for example, the aforementioned statutory ECE guidelines include the terms vertical and horizontal.

[0040] Furthermore, the first and second light modules of the first motor vehicle headlight are designed and arranged relative to one another so that the first and second light distributions 100, 200 of the first motor vehicle headlight are arranged at least partially overlapping one another with a vertical offset 301 of half the second row height 120b, 220b to form a first headlight light distribution 310, which is arranged at least partially overlapping one another with a vertical offset 301 of half the second row height 120b, 220b to form a first headlight light distribution 310. Figure 2Furthermore, the first and second light modules of the first motor vehicle headlight are designed and arranged relative to one another so that the first and second light distributions 100 , 200 of the first motor vehicle headlight additionally overlap one another at least in sections with a horizontal offset of at least one quarter of the first column width 110 a , 210 a , so that the sectionally overlapping second pixel light segment groups 120 , 220 of the first and second light distributions 100 , 200 are arranged horizontally offset from one another by one quarter of the first column width 110 a , 210 a .

[0041] Furthermore, the first and second light modules of the second motor vehicle headlight are designed and arranged relative to one another so that the first and second light distributions 100, 200 of the second motor vehicle headlight are arranged at least partially overlapping, forming a second headlight light distribution 320, wherein the second headlight light distribution 320 is horizontally mirrored relative to the first headlight light distribution 310, and the second headlight light distribution 320 is horizontally mirrored relative to the first headlight light distribution 310. Figure 3 It can be seen in.

[0042] Furthermore, the first and second motor vehicle headlights are configured and arranged relative to one another so that a first headlight light distribution 310 of the first motor vehicle headlight and a second headlight light distribution 320 of the second motor vehicle headlight are arranged overlapping one another with a horizontal offset 401 of half the first column width 110a, 210a to form a motor vehicle headlight system light distribution 400, which is arranged at Figure 4 It can be seen in.

[0043] Furthermore, the motor vehicle headlight system comprises a control device (not shown) which is designed to actuate the luminous pixels of the first and second light modules in such a way that a low-beam and / or high-beam distribution can be generated in motor vehicle headlight system light distribution 400 , wherein the luminous pixels can be actuated independently of one another.

[0044] Reference Signs List

[0045] First light distribution 100

[0046] Second light distribution 200

[0047] Pixel light segments 101, 201

[0048] First pixel light segment group 110, 210

[0049] First column width 110a, 210a

[0050] First row height 110b, 210b

[0051] Second pixel light segment groups 120, 220

[0052] Second column width 120a, 220a

[0053] Second row height 120b, 220b

[0054] The third pixel light segment group 130, 230

[0055] Third column width 130a, 230a

[0056] Third row height 130b, 230b

[0057] Vertical offset 301

[0058] First headlamp light distribution 310

[0059] Second headlight light distribution 320

[0060] Light distribution of motor vehicle headlamp system 400

[0061] Horizontal offset 401

Claims

1. A motor vehicle headlight system, comprising a first motor vehicle headlight and a second motor vehicle headlight, wherein: Each motor vehicle headlight comprises a first light module and a second light module, the first light module having luminous pixels arranged in a matrix of rows and columns and being configured to generate a first light distribution (100) before the motor vehicle headlight system by emitting light from the individual luminous pixels, and the second light module having luminous pixels arranged in a matrix of rows and columns and being configured to generate a second light distribution (200) before the motor vehicle headlight system by emitting light from the individual luminous pixels, wherein each light distribution (100, 200) is formed by a plurality of pixel light segments (101, 201), wherein a pixel light segment (101, 201) is assigned to a luminous pixel and can be generated by the luminous pixel, It is characterized by: Each light distribution (100, 200) is set up as, - generating a first group of pixel light segments (110, 210), which is arranged in a matrix-like manner in rows and columns having a first column width (110a, 210a) and a first row height (110b, 210b), - generating a second group of pixel light segments (120, 220), which is arranged in a matrix-like manner in rows and columns having a second column width (120a, 220a) and a second row height (120b, 220b), wherein the second column width (120a, 220a) corresponds to half of the first column width (110a, 210a), - generating a third group of pixel light segments (130, 230), said third group of pixel light segments being arranged in a matrix-like manner in rows and columns having a third column width (130a, 230a) and a third row height (130b, 230b), said third column width corresponding to said first column width (110a, 210a), wherein, in the first light distribution (100) of the first light module, the pixel light segment groups (110, 120, 130) are arranged one above the other in a vertical direction, wherein the first pixel light segment group (110) is arranged above the second pixel light segment group (120) in the vertical direction, and the third pixel light segment group (130) is arranged below the second pixel light segment group (120) in the vertical direction, and wherein the second light distribution (200) of the second light module is arranged in a vertical mirrored manner relative to the first light distribution (100), so that the third pixel light segment group (230) is arranged above the second pixel light segment group (220) in the vertical direction, and the first pixel light segment group (210) is arranged below the second pixel light segment group (220) in the vertical direction, wherein the first and second light modules of the first motor vehicle headlight are configured and arranged relative to one another so that the first and second light distributions (100, 200) of the first motor vehicle headlight are arranged at least partially overlapping one another with a vertical offset (301) of half the second row height (120b, 220b) to form a first headlight light distribution (310), and wherein the first and second light modules of the second motor vehicle headlight are designed and arranged relative to one another so that the first and second light distributions (100, 200) of the second motor vehicle headlight overlap at least in sections when forming a second headlight light distribution (320), wherein the second headlight light distribution (320) is horizontally mirrored relative to the first headlight light distribution (310), And wherein the first and second motor vehicle headlights are set up and arranged relative to each other so that a first headlight light distribution (310) of the first motor vehicle headlight and a second headlight light distribution (320) of the second motor vehicle headlight overlap with each other with a horizontal offset (401) of half the first column width (110a, 210a) while forming a motor vehicle headlight system light distribution (400).

2. The motor vehicle headlamp system according to claim 1, characterized in that: The first, second and third rows have different heights from each other.

3. The motor vehicle headlamp system according to claim 1, characterized in that: The first row height (110b, 210b) is greater than the second and third row heights (120b, 220b, 130b, 230b), and wherein the third row height (130b, 230b) is greater than the second row height (120b, 220b).

4. The motor vehicle headlamp system according to any one of claims 1 to 3, characterized in that: The light-emitting pixels of the first and second light modules are formed by LEDs.

5. The motor vehicle headlamp system according to any one of claims 1 to 3, characterized in that: The maximum number of luminous pixels of the optical module is 400.

6. The motor vehicle headlamp system according to any one of claims 1 to 3, characterized in that: The light-emitting pixels of the first and second light modules are configured as MiniLEDs.

7. The motor vehicle headlamp system according to any one of claims 1 to 3, characterized in that: The motor vehicle headlight system comprises a control device which is designed to actuate luminous pixels of the first and second light modules, wherein the luminous pixels can be actuated independently of one another.

8. The motor vehicle headlamp system according to claim 7, characterized in that: The control device is designed to actuate the luminous pixels of the first and second light modules in such a way that a low-beam and / or high-beam distribution can be generated in the light distribution of the motor vehicle headlight system.

9. The motor vehicle headlamp system according to any one of claims 1 to 3, characterized in that: The first and second light modules of the first motor vehicle headlight are designed and arranged relative to one another so that the first and second light distributions (100, 200) of the first motor vehicle headlight additionally overlap one another at least in sections with a horizontal offset of at least one quarter of a first column width (110a, 210a).

10. The motor vehicle headlamp system according to claim 9, characterized in that: The horizontal offset is a multiple of one quarter of the first column width (110a, 210a).

Images