Lighting device for vehicles

DE102021124222B4Active Publication Date: 2025-02-20HELLA GMBH & CO KGAA
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Patent Information

Application Number
DE102021124222
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-09-20
Publication Date
2025-02-20
Estimated Expiration
2041-09-20

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Abstract

Lighting device for vehicles with a number of light modules (1, 1', 1''; 21, 21', 21''), wherein the light module (1, 1', 1''; 21, 21', 21'') comprises: - a light source unit (2) with a number of light sources (3) arranged in a preferred direction (V) in a row and / or in a column for emitting light, - a shutter (4) arranged in the main emission direction (H) in front of the light source unit (2) with passages (5, 5') spaced apart from each other in a preferred direction (V), each of which is assigned to the light sources (3), - a collimation optic (7) arranged in the main emission direction (H) in front of the aperture (4) for parallelizing the light emitted by the light source unit (2), - a diverting optic (8) arranged in the main emission direction (H) in front of the collimation optic (7) for spreading the horizontal and / or vertical extent of the light pixels (16) passed through the apertures (5, 5') of the diaphragm (4) into light spots (9, 9', 9'') of a light distribution (10), wherein the diverting optic (8) has on a light entry side facing the collimation optic (7) a first optical structure field (11) with a number of micro-optical elements (12, 12') and / or on a light exit side facing away from the collimation optic (7) a second optical structure field (13) with a number of micro-optical elements (14) for vertical and / or horizontal deflection of the light, characterized in that - that several light modules (1, 1', 1''; 21, 21', 21'') are arranged spatially offset from one another, wherein the preferred directions of apertures (4) of a first light module and a second light module are parallel and wherein the second light module is arranged offset relative to the first light module exclusively in a first direction, which is perpendicular to a plane spanned by the preferred direction (V) and the main emission direction (H) on the one hand or - the second light module is arranged offset relative to the first light module in the first direction and in the preferred direction (V), - that the light modules (1, 1', 1''; 21, 21', 21'') are aligned offset from each other in the preferred direction (V), so that a row of light pixels (16) of a first light module and a row of light pixels (16) of a second light module are mapped into a row of light spots of a first light distribution generated by the first light module and a second light distribution generated by the second light module, respectively, which are arranged offset from each other in the preferred direction on the measuring screen, - that the first and second light modules or the assembly of the first and second light modules consisting of the light source unit (2), the aperture (4) and the collimation optics (7) are tilted differently about a tilting axis parallel to the preferred direction (V) so that the rows of light spots of the first light distribution or the second light distribution, which are arranged offset from each other in the preferred direction (V) on the measuring screen, overlap in the preferred direction (V).
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Description

[0001] The invention relates to a lighting device for vehicles with a number of light modules, wherein the light module comprises a light source unit with a number of light sources arranged in a preferred direction in rows and / or in a column for emitting light, a shutter arranged in the main emission direction in front of the light source unit with apertures spaced apart from each other in a preferred direction, each aperture being assigned to the light sources, a collimation optic arranged in the main emission direction in front of the shutter for parallelizing the light emitted by the light source unit, and a diffusion optic arranged in the main emission direction in front of the collimation optic for spreading the horizontal and vertical extent of the light pixels passed through the aperture apertures into light spots of a light distribution.wherein the scattering optics on a light entry side facing the collimation optics has a first optical structure field with a number of micro-optical elements and / or on a light exit side facing away from the collimation optics a second optical structure field with a number of micro-optical elements for the vertical and / or horizontal deflection of the light.

[0002] From DE 10 2018 107 213 A1, a lighting device for vehicles is known, comprising a light source unit containing multiple light sources, an aperture, a plurality of collimation optics, and an imaging optic. The aperture has a plurality of openings, each associated with one of the light sources of the light source unit and one of the collimation optics. The aperture is mounted on one light-entry side of the integrally connected collimation optics. Each opening, and thus each light source, is associated with a single collimation optic, resulting in a relatively large number of components.

[0003] From US patent 10,232,763 B1, a lighting device for vehicles is known, comprising a number of light sources, collimating optics, and imaging optics, wherein an aperture diaphragm is integrated into the imaging optics. If the light distribution needs to be changed, for example, to create a frontal illumination, a section of the imaging optics located at the front in the main beam direction can be shifted laterally to a rear section. If the lighting device includes several light modules, these can be arranged at an angle to one another so that the light distributions produced by each module overlap. This results in a homogeneous and simultaneously intense light distribution.

[0004] The object of the present invention is to further develop a lighting device for vehicles in such a way that a predetermined light distribution can be generated cost-effectively and with simple means.

[0005] To solve this problem, the invention, in conjunction with the preamble of claim 1, is characterized in that several light modules are arranged spatially offset from one another, wherein the preferred directions of apertures of a first light module and a second light module are parallel, and wherein the second light module is arranged offset relative to the first light module exclusively in a first direction, which is perpendicular to a plane spanned by the preferred direction and the main emission direction, either on the one hand or wherein the second light module is arranged offset relative to the first light module in the first direction and in the preferred direction, such that the light modules are aligned offset from one another in the preferred direction, so that a row of light pixels of a first light module and a row of light pixels of a second light module are aligned into a row of light spots of a first light distribution generated by the first light module.a second light distribution generated by the second light module is depicted, which is arranged offset from each other on the measuring screen in the preferred direction, such that the first and second light modules or the assembly of the first and second light modules consisting of the light source unit, the aperture and the collimation optics are pivoted differently about a tilting axis running parallel to the preferred direction, so that the lines of light spots of the first light distribution or the second light distribution, which are arranged offset from each other on the measuring screen in the preferred direction, overlap in the preferred direction.

[0006] The particular advantage of the invention lies in the fact that a light distribution can be generated cost-effectively and in a space-saving manner. A light source unit and an aperture interact in such a way that homogeneous light is emitted from the aperture openings. The aperture openings essentially form the effective luminous surface of the light sources. The openings, or rather the spacing between them, thus determines the distance between the luminous light source surfaces or light pixels. According to the invention, several light modules, each with an aperture featuring multiple openings arranged in rows and / or columns, collimation optics, and diffusion optics, are spatially offset from one another.Furthermore, relative to a reference point, a row and / or a column of apertures of the respective light modules are arranged offset from one another in a preferred direction, so that the respective apertures (light pixels) depicted as light spots in the light distribution are arranged according to the reference distance. By additionally tilting the light modules, the diagonally or vertically offset light sources of the light distributions generated by the respective light modules can be brought into a common row or column. Advantageously, this allows several identical rows of light spots (light spot strip) from the light modules to be combined into a single row of light spots when multiple light modules are spatially separated from one another, either vertically or diagonally, with the light spots of the respective light modules overlapping in the direction of extension of the light spot row (light spot strip).If, for example, the light modules have an aperture with a single row (bar) of apertures, the light pixels of these aperture bars are thus mapped onto a single horizontal light spot bar. Two spaced-apart light spots from a single light module overlap with light spots from the other light modules, thereby filling any gap that would otherwise occur. Advantageously, a high-intensity light distribution can be generated with simple structural effort by multiplying several, preferably identical, light modules. The multiple, preferably individually controllable, light sources thus enable the creation of a glare-free high-beam distribution.

[0007] In a preferred embodiment, the multiple light modules are each identical, with the light distributions of the modules being superimposed to create a homogeneous overall light distribution solely through offsetting and / or tilting them. The light distributions of the light modules are identical.

[0008] According to a further development of the invention, the aperture openings are smaller than the light-emitting surface of a corresponding light source within the light source units. This advantageously compensates for tolerance deviations in the alignment of the light sources with respect to the aperture.

[0009] According to a further development of the invention, a first optical structure field of the scattering optics, arranged on the light-entry side, comprises prism elements and arc elements arranged alternately transversely to the preferred direction. Advantageously, this allows the light to be deflected or scattered to varying degrees in different directions with respect to a preferred axis defined by the preferred direction. For example, the prism and arc elements can cause an asymmetric vertical spreading of the light upwards and downwards.

[0010] According to a further development of the invention, a micro-optic arranged on the light-exit side of a second optical structure field of the scattering optics is partially cylindrical in shape with a cylinder axis that runs transversely to the preferred direction and transversely to the main emission direction. By means of these micro-optics, the light is spread out, preferably in the horizontal direction.

[0011] In a further development of the invention, the diffusing optics are designed such that they cover the collimation optics of all light modules in the main beam direction. The diffusing optics are thus a component of several light modules. To reduce the number of components, the diffusing optics can also be designed as the end plate of a headlight housing.

[0012] According to one embodiment of the invention, the diffusing optics are inclined in a plane defined by the main emission direction and a direction perpendicular to the same and to the preferred axis. Such an inclined design is particularly advantageous when, with an odd number of light modules, a central light module serves as a reference. By tilting the diffusing optics, the light modules arranged above the reference light module can thus be easily tilted in the opposite direction to the light modules arranged below the reference light module. The light modules are therefore aligned with respect to the central light module as a reference.

[0013] According to a further embodiment of the invention, an upper or lower light module serves as a reference for the other light modules. Starting from the reference module, the light modules are pivoted further by a predetermined tilt angle, with the tilt angle increasing with each additional light module relative to the reference. As the tilt angle increases, the offset of the throughput strip in the preferred direction also increases, so that the light spots of the light modules can be aligned onto a common light spot strip.

[0014] Further advantages of the invention will become apparent from the further dependent claims.

[0015] Exemplary embodiments of the invention are explained in more detail below with reference to the drawings.

[0016] They show: Fig. 1 a perspective view of a lighting device with three light modules arranged transversely and longitudinally offset from each other, Fig. 2 a front view of the light modules according to Fig. 1, Fig. 3 an enlarged perspective front view of a light module, Fig. 4 a side view of the light module, Fig. 5 an enlarged representation of a scattering optic of the light module with an enlarged representation of an optical structure arranged on the input side, Fig. 6 an enlarged representation of a scattering optic of the light module with an enlarged representation of an optical structure arranged on the output side, Fig. 7. An overall light distribution of the light distributions produced by the three light modules, Fig. 8. A total light distribution with the light source switched off at the same point on the light source strip. Fig. 9a a schematic representation of the light modules without tilting them, Fig. 9b a schematic representation of the light modules with their tilting and Fig. 10 a side view of an alternative lighting device of the invention with collimation optics joined in one piece.

[0017] A vehicle lighting device can be used, in particular, to generate a high beam distribution. Additionally, other light modules can be used to create, for example, an asymmetric low beam distribution and a forward beam distribution. If the individual light sources of the lighting device can be controlled independently, a glare-free high beam distribution can be achieved, ensuring that neither oncoming nor preceding road users are dazzled.

[0018] The lighting device for vehicles according to the invention consists of a plurality of light modules 1, each preferably of the same design. In the present embodiment, three light modules 1, 1', 1" are provided.

[0019] The light modules 1, 1', 1" each have a light source unit 2 with a plurality of light sources 3. The light sources 3 can be arranged in rows and / or columns in a matrix-like configuration on a substrate (circuit board). In the present embodiment, the light source unit 2 has only one row (bar) of light sources 3, in which the light sources 3 are spaced apart from each other along a preferred direction V. The light sources 3 are each designed as LED chips.

[0020] The light modules 1, 1', 1" each have an aperture 4 with a plurality of apertures 5. The apertures 5 are each assigned to a light source 3 and arranged in a main emission direction H in front of the respective light sources 3. The apertures 5 are offset from the light sources 3 in the main emission direction H and extend along the preferred direction V, which coincides with a horizontal direction y. The row of apertures 5 and the row of light sources 3 are thus parallel to each other. The apertures 5 have a smaller dimension than the light-emitting surface of the light sources 3. In this way, tolerances in the arrangement of the light sources 3 relative to each other can be compensated for. Even if the light sources 3 are not optimally aligned with a central axis of the respective apertures 5, homogeneous light is emitted from the apertures 5.The apertures 5 essentially form light pixels 16 (light-emitting surfaces) of the same dimension. For example, the apertures 5 of the diaphragm 4 are dimensioned such that they have a clear distance between opposing edge edges 6 that is 0.3 mm smaller than the edges of the luminous surface of the light sources 3. In this way, tolerance variations of the LED light sources of + / - 0.15 mm can be compensated for.

[0021] The aperture 4 is made of sheet metal with a thickness of, for example, 0.2 mm. It may be provided with a non-reflective coating. The aperture 4 is located directly adjacent to the light source unit 2, with the light sources 3 arranged behind the respective apertures 5 in the main emission direction H. The light sources 3 preferably do not touch the aperture 4.

[0022] The light module 1, 1', 1" further comprises a collimation optic 7, which is arranged at a distance a in the main emission direction H in front of the aperture 4. The collimation optic 7 is designed and configured to parallelize the light emitted through the apertures 5. In the present embodiment, the collimation optic 7 is designed as a freeform lens. Preferably, the collimation optic 7 is designed as a biconvex lens.

[0023] In the main emission direction H in front of the collimation optics 7, a diverting optics 8 is arranged to spread the horizontal and vertical extent of the light pixels 16, defined by the dimensions of the apertures 5 of the diaphragm 4, into light spots 9, 9', 9" of a light distribution. The light distributions generated by the light modules 1, 1', 1" each superimpose to form an overall light distribution 10, which is Fig. Figure 7 is shown. The light pixels 16, arranged at equal intervals in the horizontal direction y and with the dimension of the respective apertures 5, are mapped to light spots 9, 9', 9" which each extend in the same direction y.

[0024] The scattering optics 8 has a first optical structure field 11 with a plurality of micro-optics 12, 12' on a light-intake side and a second optical structure field 13 with a plurality of micro-optics 14 on a light-outtake side. The first optical structure field 11 serves to vertically scatter or spread the incident light upwards and downwards, i.e., in the z-direction. The first optical structure field 11 has prism elements 12 as micro-optic elements and arc elements 12' as micro-optic elements, which are arranged alternately transversely to the preferred direction V. The arc elements 12' are directly adjacent to the prism elements 12 in the preferred direction V. The prism elements 12 are directly adjacent to the arc elements 12' in the preferred direction V. In cross-section, the first optical structure field 11 follows a sawtooth shape, with the ends of the prism elements 12 being rounded by means of the arc elements 12'.The arc elements 12' connect a tip 15 projecting from a base surface 19 of the light coupling side of the scattering optics 8 with the base surface 19 of the same, so that the prism elements 12 are arranged offset from each other in the z-direction by the width of the arc elements 12'.

[0025] Preferably, the maximum height d (distance of the tip 15 to the base of the light coupling side) of the prism elements 12 decreases from a region far from the axis towards a region close to the axis of the scattering optics 8.

[0026] The first optical structure field 11 causes relatively little vertical scattering of the light in a lower vertical region of the overall light distribution 10, for optimal integration with a front-area light distribution. In the upward vertical direction, greater scattering occurs to improve the visibility of objects.

[0027] The second optical structure field 13 comprises micro-optic elements 14, which are partially cylindrical with a cylinder axis that runs transversely to the preferred direction V and transversely to the main emission direction H. The partially cylindrical micro-optic elements 14 thus extend parallel to each other in the z-direction (vertical direction). The partially cylindrical micro-optic elements 14 are arranged directly adjacent to one another. The second optical structure field 13 causes a horizontal spreading of the light, thus contributing to a homogeneous overall light distribution.

[0028] Preferably, the collimation optics 7 and the scattering optics 8 are made of a glass or plastic material, for example PMMA.

[0029] The diffusing optic 8 can have dimensions of 20 x 40 mm.

[0030] As from Fig. As can be seen in Figure 2, the light modules 1, 1', 1'' are arranged offset in the y-direction (horizontal direction) and z-direction (vertical direction) within a common housing of the headlight. Fig. As can be seen in Figure 1, the light modules 1, 1', 1'' are also arranged offset from each other in the main beam direction (x-direction) so that they can be housed in a swept-shaped headlight casing. The light modules 1, 1', 1'' are preferably identical.

[0031] It is evident that the light modules 1, 1', 1'' are aligned in the main emission direction H, with a preferred direction V2 of an upper light module 1' running parallel to a preferred direction V1 of a middle light module 1. Furthermore, a preferred direction V3 of a lower light module 1'' runs parallel to the preferred direction V1 of the middle light module 1 and the preferred direction V2 of the upper light module 1'.

[0032] As from Fig. As can be seen in Figure 9a, the light modules 1, 1', 1'' are aligned offset from each other in the preferred direction V. With respect to the middle light module 1, the row of apertures 5 of the upper light module 1' is offset by Δs in a first direction R1, and the row of apertures 5 of the lower light module 1'' is offset by Δs in an opposite second direction R2 to the row of apertures 5 of the middle light module 1. This means that the offset directions R1 and R2 run in the preferred direction V. The offset Δs is chosen to be large enough that the light spots 9' of the upper light module 1' and the light spots 9'' of the lower light module 1'', when projected onto the light spots 9 of the middle light module 1', cover a gap 17 between the adjacent light spots 9 of the same. Fig. Figure 9a shows a row of light spots 9 of the middle light module 1, a row of light spots 9' of the upper light module 1', and a row of light spots 9'' of the lower light module 1'', representing the case where the rows of apertures 5 of the light modules 1, 1', 1'' are offset from each other only in the directions R1 and R2. The rows of light spots 9, 9', 9'' are arranged one above the other in the z-direction, but offset from each other in the y-direction (horizontal direction). Projecting the strips of light spots 9' and the lower light spots 9'' onto the plane of the light spots 9 of the middle light module 1' would close the gap 17, whereby the gap 17 between adjacent light spots 9 is closed by the overlap of one upper light spot 9' and one lower light spot 9''. So that such an overlap of the light spots 9, 9', 9'', which in Fig. As shown in Figure 9b, the upper light module 1' is tilted downwards by a tilt angle φ1 relative to the middle light module 1', while the lower light module 1'' is tilted upwards by the same tilt angle φ2 relative to the middle light module 1'. A tilting axis 18 runs parallel to the preferred direction V, i.e., in the horizontal direction. Thus, the light spots 9, 9', 9'' of the light modules overlap in the preferred direction V. For example, the gap 17 of the first light spot 9 1 and the second light spot 9 2 of the middle light module 1 firstly by the first light spot 9' 1 of the upper light module 1' and through the second light spot 9'' 2 of the lower light module 1'' is filled. The same applies to the gaps 17 between the other adjacent light spots 9. 2 up to 9 9 of the light distribution generated by the central light module 1'. From Fig. Figure 8 clearly shows that the overall light distribution is formed solely by superimposing a single row of light modules 1, 1', 1''.

[0033] The light modules 1, 1', 1'' are each tilted about a horizontal or y-direction tilting axis. The tilting angles φ1, φ2 of the lower and upper light modules 1', 1'' can, for example, have a magnitude of 0.2°, with the tilting direction being opposite.

[0034] To avoid glare for other road users, for example, the central light sources 3, which correspond to the central passages 5', can be switched off. In this case, a central area of ​​the overall light distribution 10 would be omitted, see figure. Fig. 8.

[0035] According to a second embodiment of the invention according Fig. In section 10, three light modules 21, 21', 21'' are provided, which differ from the preceding light modules 1, 1', 1'' in that the light modules 21, 21', 21'' are spatially offset from each other exclusively in the transverse direction to the preferred axis or in the z-direction. Furthermore, the light modules 21, 21', 21'' are arranged directly next to each other, with the collimation optics 7 and the scattering optics 8 of each being integrally connected.

[0036] Identical components or component functions are provided with the same reference symbols.

[0037] In contrast to the first embodiment, the light modules 21, 21', 21'' are not arranged as a whole at a tilt about a tilting axis 18. Tilting occurs only with respect to the diffusing optics 8 relative to the other components of the light modules, namely the collimating optics 7, the aperture 4, and the light source unit 2. As can be seen from Fig.As can be seen in Figure 10, the scattering optics 8 are arranged inclined from a lower edge to the collimating optics 7 by the tilt angle φ. The lower light module 21' serves as a reference for the further light modules 21 and 21''. Thus, the light spots 9, 9', 9'' produced by the respective light modules 21, 21', 21'' can overlap with each other and be arranged in a common horizontal plane.

[0038] It is evident that the scattering optics 8 are plate-shaped. Projected in the main emission direction H onto the collimation optics, the scattering optics 8 covers the collimation optics of the light modules 21, 21', 21''.

[0039] In the present embodiments, the prism elements 12 rise from the base 19 of the coupling side within an angular range of 3° to 10°. Preferably, this angular range is 4° to 6°, and particularly 5°. If the prism angle is 5°, this results in a vertical scattering of the light also by 5°. List of reference symbols 1,1',1'' light module 2 light source units 3 Light source 4 aperture 5.5' passages 6 Edge 7 Collimation optics 8 Scatter optics 9, 9', 9'' light spots 10 Light distribution 11 1. Optical structure field 12.12' prism elements / arc elements 13 2. Optical structure field 14 micro-optical elements 15 top 16 1. Light pixels 17 gap 18 tipping axle 19 Floor area 21, 21', 21'' light module H Main radiation direction a distance V,V1,V2,V3 Preferred direction Δs offset φ1, φ2 tilt angle R1,R2 Offset directions

Claims

[1] Lighting device for vehicles with a number of light modules (1, 1', 1''; 21, 21', 21''), wherein the light module (1, 1', 1''; 21, 21', 21'') comprises: - a light source unit (2) with a number of light sources (3) arranged in a row in a preferred direction (V) and / or in a column for emitting light, - a diaphragm (4) arranged in front of the light source unit (2) in the main radiation direction (H) with passages (5, 5') arranged at a distance from one another in a preferred direction (V), each of which is assigned to the light sources (3), - a collimating optic (7) arranged in the main emission direction (H) in front of the aperture (4) for parallelising the light emitted by the light source unit (2), - a scattering optic (8) arranged in the main emission direction (H) in front of the collimating optic (7) for spreading the horizontal and / or vertical extent of the light pixels (16) forwarded by the apertures (5, 5') of the diaphragm (4) to form light spots (9, 9', 9'') of a light distribution (10), wherein the scattering optic (8) has a first optical structure field (11) with a number of micro-optical elements (12, 12') on a light entry side facing the collimating optic (7) and / or a second optical structure field (13) with a number of micro-optical elements (14) on a light exit side facing away from the collimating optic (7) for vertical and / or horizontal deflection of the light, characterized by , - that a plurality of light modules (1, 1', 1''; 21, 21', 21'') are arranged spatially offset from one another, wherein preferred directions of apertures (4) of a first light module and of a second light module run parallel and wherein the second light module is arranged offset relative to the first light module exclusively in a first direction which runs perpendicular to a plane spanned by the preferred direction (V) and the main emission direction (H), on the one hand, or - the second light module is arranged offset relative to the first light module in the first direction and in the preferred direction (V), - that the light modules (1, 1', 1''; 21, 21', 21'') are aligned offset from one another in the preferred direction (V), so that a row of light pixels (16) of a first light module and a row of light pixels (16) of a second light module are imaged into a row of light spots of a first light distribution generated by the first light module and a second light distribution generated by the second light module, respectively, which are arranged offset from one another in the preferred direction on the measuring screen, - that the first and second light modules or the structural unit of the first and second light modules consisting of the light source unit (2), the diaphragm (4) and the collimation optics (7) are pivoted differently about a tilt axis running parallel to the preferred direction (V) in such a way that the rows of light spots of the first light distribution or the second light distribution arranged offset from one another in the preferred direction (V) on the measuring screen overlap in the preferred direction (V). [2] Lighting device according to claim 1, characterized by that the plurality of light modules (1, 1', 1''; 21, 21', 21'') are aligned such that the light distributions generated by the light modules (1, 1', 1''; 21, 21', 21'') are arranged equal and offset from one another in the preferred direction (V). [3] Lighting device according to claim 1 or 2, characterized by that the aperture (4) is arranged at a distance from the collimation optics (7). [4] Lighting device according to one of claims 1 to 3, characterized by that the collimation optics (7) and / or the scattering optics (8) consist of a glass material or plastic material, preferably PMMA. [5] Lighting device according to one of claims 1 to 4, characterized by that the apertures (5, 5') of the diaphragm (4) are smaller than a luminous surface of the light sources (3) of the light source unit (2) assigned to them. [6] Lighting device according to one of claims 1 to 5, characterized by that the passage (5) of the diaphragm (4) has a longitudinal and / or transverse extension which is at least 0.2 mm, preferably 0.3 mm, smaller than a longitudinal and / or transverse extension of the light source (3). [7] Lighting device according to one of claims 1 to 6, characterized bythat the optical structure field (11) arranged on the light entry side has, as a micro-optical element, prism elements (12) and arc elements (12') arranged alternately transversely to the preferred direction (V). [8] Lighting device according to one of claims 1 to 7, characterized by that the arch elements (12') are each connected to an end of the prism elements (12) projecting from a base surface (19) of the light entry side. [9] Lighting device according to one of claims 1 to 8, characterized by that a tip (15) of the prism elements (12) projecting from the base surface (19) of the light entry side encloses a constant angle in the range of 2° to 8° with the base surface (19). [10] Lighting device according to one of claims 1 to 9, characterized bythat the distance (d) of the tip (15) of the prism elements (12) from the base surface (19) of the light entry side decreases from a region remote from the axis towards a region near the axis. [11] Lighting device according to one of claims 1 to 10, characterized by that the micro-optical elements (14) arranged on the light exit side on the second optical structure field (13) are partially cylindrical with a cylinder axis which runs transversely to the preferred direction (V) and transversely to the main emission direction (H). [12] Lighting device according to one of claims 1 to 11, characterized by that the scattering optics are plate-shaped. [13] Lighting device according to one of claims 1 to 12, characterized by that the scattering optics are dimensioned such that, when projected in the main radiation direction (H) onto the collimation optics (7), they cover the collimation optics of all light modules (21, 21', 21''). [14] Lighting device according to one of claims 1 to 13, characterized by that the flat scattering optics (8) are inclined in a plane spanned by the main emission direction (H) and a direction perpendicular to the same and to the preferred axis. [15] Lighting device according to one of claims 1 to 14, characterized by that an odd number of light modules is provided, wherein a middle light module (1) seen transversely to the preferred direction (V) serves as a reference for the number of light modules arranged below and above. [16] Lighting device according to claim 15, characterized by that the number of light modules arranged on the upper side of the middle light module are tilted by the tilt angle (φ) in a first direction and the number of light modules arranged below the middle light module are tilted in the opposite direction by the tilt angle (φ). [17] Lighting device according to one of claims 1 to 16, characterized by that the collimation optics (7) of the light modules (21, 21', 21'') are integrally connected to one another. [18] Lighting device according to one of claims 1 to 17, characterized by that at least three light modules are provided, wherein a tilt angle of the light modules increases with increasing distance between them transversely to the preferred direction (V) of a light module specified as a reference. [19] Lighting device according to one of claims 1 to 18, characterized by that the collimation optics (7) are assigned to several apertures (5) of the diaphragm (4).

Citation Information

Patent Citations

  • Lighting arrangement for headlight i.e. pixel headlight, of vehicle, has imaging elements and LED fields arranged such that borders of light beams of LED fields directly lie to borders of light beams of adjacently arranged LED fields

    DE102012008833A1

  • Lighting device for vehicles

    DE102018107213A1

  • Lighting device for a vehicle, in particular headlights

    DE102020102226A1

  • Solid state adaptive headlight

    US10232763B1

  • US000010232763B1