EP3765780B1 - Lighting device for a motor vehicle headlamp - Google Patents

Description

The invention relates to a lighting device for a motor vehicle headlight according to the preamble of claim 1.

A lighting device of this type is, for example, from the document WO 2013/166535 A2 known. In such a lighting device for a motor vehicle headlight, what is essential for a practicable light image is the formation of the attachment optics with corresponding light-guiding elements, in which the light is guided by total reflection at the boundary walls.

Further is from the document DE 10 2015 224 745 A1 a lighting device for a motor vehicle headlight has become known, in which the light exit surface has at least sections of a light decoupling optics with a convex curvature and with decoupling grooves on the edges of the light decoupling optics, with several light guide elements each having their light decoupling surfaces assigned to a light decoupling optics.

From the document EP 2 306 074 A2 a motor vehicle headlight with a light module, which has a matrix-like arrangement of semiconductor light sources, primary optics and secondary optics, is known. The secondary optics there has an achromatically acting arrangement which optionally has at least two lenses with a different refractive index or which has a combination of a converging lens and a diffractive optics.

The disadvantage of such lighting devices previously known from the prior art is that unwanted scattered light forms around the individual matrix segments, particularly when the primary optics are designed as a matrix system. This formation of scattered light disadvantageously reduces the imaging quality of the individual matrix segments. In addition, it can be caused by the formation of scattered light - dependent of the respective legal regulations - there may be problems with the homologation of motor vehicle headlights due to the standards and limit values to be observed.

One of the objects of the invention is to optimize the shape of the attachment optics in an illumination device of the type in question, especially with regard to even better homogeneity and maximum brightness of the light image generated. In addition, a generic lighting device is to be specified which overcomes the disadvantages known from the prior art.

These objects are achieved with a lighting device having the characterizing features of claim 1.

Thanks to the invention, for each lighting device designed according to the invention, there is a light distribution with fewer disturbing areas, a lower proportion of scattered light and a higher maximum light intensity on the light exit surface of the front optics or in the light image generated. By using one or more light decoupling optics, which are arranged in the light exit direction on the light exit surface of the attachment optics, the light image generated by the light guide elements can be improved, the imaging quality of individual light sources or individual light guide elements can be increased and the formation of unwanted scattered light can be reduced.

With this embodiment of a lighting device according to the invention, further advantages can also be achieved: The homologation of newly developed motor vehicle headlights can become easier, since the person skilled in the art has a suitable means at hand to reduce or avoid undesired scattered light formation. In addition, advantageous lighting effects can be achieved with a lighting device according to the invention. For example, by using suitable light decoupling optics, a cornering light can be pulled further outwards.

Advantageously, several light guide elements can be connected to one another in one piece in their front area, ie that area which includes the light decoupling surfaces of the light guide elements in the light exit direction, since this simplifies production and leads to a compact and stable attachment optics.

According to the invention, a plurality of light-guiding elements are arranged in a matrix arrangement in at least one matrix row and in a plurality of matrix columns. For example, the light-guiding elements can be arranged in a matrix arrangement in two or three rows and in numerous matrix columns next to one another. In the following, the matrix arrangement is also described using directional information for easier representation. Matrix rows are therefore arranged essentially in the horizontal direction, while matrix columns run essentially in the vertical direction. This assignment of the terms with regard to a location or an orientation, such as "horizontal", "vertical", "in the horizontal direction", "in the vertical direction", "above", "below", "in front", "below", " above" etc. are only chosen in the description for the sake of simplicity and possibly refer to the representation in the drawings, but not necessarily to a usage or installation position of the lighting device or the motor vehicle headlight.

In the context of the present application, the term matrix arrangement is also intended to apply to the extreme case in which the matrix is one-line, i.e. there is only one row of light-guiding elements, which makes perfect sense in motor vehicle lighting technology.

Experience has shown that the construction of a lighting device for a motor vehicle headlight or a light module with a matrix-like arrangement is particularly efficient when the light-guiding elements are arranged in exactly three superimposed matrix rows or rows which together form a high-beam distribution. In such an arrangement, the upper matrix row can be configured as a front row, the middle matrix row as an asymmetric row and the lower matrix row as a high-beam row, with the high-beam row being made up of high-beam light-guiding elements with corresponding constrictions.

A light source, in particular an LED or a plurality of LEDs, is preferably assigned to each light-guiding element. Within the scope of the invention, however, several light sources can also be assigned to one light-guiding element or, conversely, a single light source can also be assigned to several light-guiding elements, depending on the design. Light sources other than LEDs can also be used. The light-guiding elements can be made, for example, from highly transparent, light-guiding and malleable plastics, which are well suited for the production of complex geometries. Silicone materials are particularly preferred. However, it is also possible to use glasses. In the case of light-guiding elements connected to one another in one piece or a one-piece lighting unit, the use of plastics for producing the lighting unit and/or the light-guiding elements is preferred.

According to the invention, several light guide elements, which are arranged next to one another in rows in a matrix row, are assigned to a light decoupling optical system. According to the invention, in this embodiment, several light guide elements are assigned line by line to a common light decoupling optic. In this way, the imaging quality of a plurality of light-guiding elements can be improved line-by-line very efficiently. Optionally, all of the light-guiding elements that are arranged next to one another in a matrix row can be assigned to a single light decoupling optic.

In other cases, it can be advisable if, in an illumination device according to the invention, the light-guiding elements arranged in at least two matrix rows spaced apart from one another are assigned row by row to different rows of light decoupling optics that are also spaced apart from one another. Thus, the imaging quality of the light-guiding elements arranged in a matrix-like manner can be improved line by line through the use of light decoupling optics assigned line by line.

According to the invention, the one or more decoupling grooves on the light exit surface of the attachment optics can extend in the longitudinal direction or in the line direction of the light decoupling optics along a number of light-guiding elements.

Likewise, one or more decoupling grooves can extend in the longitudinal direction or in the row direction along the entire length of the light exit surface.

In a further preferred embodiment of the invention, in the case of an illumination device, each matrix line of light-guiding elements can be assigned a line of light decoupling optics.

According to a further preferred embodiment of the invention, in an illumination device, a contour shape of the convex curvature of a light decoupling optic can be selected from a group comprising: circular segment, elliptical segment, free-form curve segment. Differently contoured light decoupling optics can advantageously be used in this embodiment. For example, an illumination device can be used in which the light image of a three-line matrix arrangement of light-guiding elements is improved with an optical attachment that is equipped line by line with differently shaped light decoupling optics on the light exit surface. For example, the upper of three matrix rows of light-guiding elements can be assigned a first light decoupling optics, which has a convex curvature with the contour of a circular segment with a radius of 10 mm. For example, the middle of three matrix rows of light-guiding elements can be assigned a second light decoupling optics, which has a convex curvature with the contour of a circular segment with a radius of 5 mm. For example, a third light decoupling optic can be assigned to the lower of three matrix rows of light-guiding elements, which has a convex curvature with the contour of a free-form surface.

Likewise, the light exit surface of the attachment optics can be structured in such a way that a planar section or a planar line of the light exit surface is provided adjacent to a section or a line of light decoupling optics with a contoured convex curvature. Such planar sections of the light exit surface can also be provided between two optical attachments.

In a further development of the invention, the contour shape of the curvature of several lines of the light output optics can each be designed the same in an illumination device. In this expedient embodiment, which can be produced inexpensively, the light exit surface of the attachment optics is covered with rows of light decoupling optics that are each contoured in the same way. In a preferred variant, the same number of rows of light decoupling optics are expediently provided as there are matrix rows of light-guiding elements.

In an alternative development of the invention, in an illumination device, the contour shapes of the curvature of at least two lines of the light decoupling optics be different. In this embodiment variant, the imaging quality of individual light sources or individual light-guiding elements can be increased in a particularly flexible manner.

Particularly advantageously, in the case of an illumination device, each row of the light decoupling optics can have a constant width and a uniform contour shape of the curvature in each row direction. In this embodiment, the light decoupling optics are homogeneous in rows or in the direction of the rows, which is advantageous for cost-effective production.

In an alternative embodiment of the invention, in an illumination device, at least one line of the light coupling-out optics in the line direction can have different widths and/or different heights and/or different contour shapes of the curvature, at least in sections. In this embodiment variant, individual or multiple light decoupling optics can have different dimensions in sections in the longitudinal direction or in the line direction along the length of the light exit surface of the front optics. For example, it can be expedient if a line-by-line arranged light decoupling optic has a larger width and/or a larger height as well as a convex curvature with a larger radius of curvature - and thus a larger material height - in its middle section than on its lateral edge sections on the narrow sides of the intent optics.

In a further preferred embodiment of the invention, in an illumination device, at least one light decoupling optic can have a surface section with microstructures of a roughened surface. Such microstructures in the area of the light decoupling optics can offer the advantage, for example, that a particularly homogeneous light image is generated by the lighting device. For example, such microstructures can be designed as scar-like roughness on the surface of the light output coupling optics, with their characteristic lengths being of the order of 5 μm (micrometers), for example. Advantageously, this graining can be applied at least in sections to the light decoupling optics assigned to the front row.

It can be advantageous if, in the case of an illumination device, the light exit surface of the optical attachment is a surface that is curved without kinks in the longitudinal direction or in the line direction, preferably a Petzval surface that is curved without kinks. Advantageously, particularly in the case of a matrix arrangement of the light-guiding elements, the light exit surface therefore has no kinks in the direction of the matrix columns, that is to say essentially in the vertical direction. Thus, the light decoupling optics also point in the row direction or in No disturbing kinks or interruptions in the longitudinal direction. The light decoupling optics are limited solely by the decoupling grooves, which run in the direction of the matrix rows, ie essentially in the horizontal direction.

The common light exit surface is typically a curved surface that usually follows the Petzval surface of the imaging optics—for example an imaging lens. For certain applications, however, deliberate deviations in the curvature can also be used in order to use aberrations in the edge area for light homogenization.

A light module with at least one lighting device according to the invention can also be specified within the scope of the invention. If the term “headlight” is used in connection with the invention, this term should also include individual light modules or projection modules, which can also be contained in a superordinate headlight in combination.

However, it is also possible within the scope of the invention to use a vehicle headlight with at least one lighting device and/or with at least one light module with at least one lighting device according to the invention. For example, such a vehicle headlight can also include projection optics arranged downstream of the lighting unit in the light exit direction.

• Fig. 1 schematisch und in schaubildlicher Darstellung Komponenten eines erfindungsgemäßen Kraftfahrzeugscheinwerfers, nämlich eine Leuchteinheit samt einer vorgesetzten Projektionslinse;
• Fig. 2 in schaubildlicher Darstellung eine erfindungsgemäße Leuchteinheit mit einer Vorsatzoptik, schräg von hinten in Richtung der Lichteinkoppelflächen der Lichtleitelemente gesehen;
• Fig. 3 eine erste Ausführung einer erfindungsgemäßen Vorsatzoptik von der Seite gesehen;
• Fig. 4 eine zweite Ausführung einer erfindungsgemäßen Vorsatzoptik von oben gesehen;
• Fig. 5 die in Fig. 4 gezeigte zweite Ausführung einer erfindungsgemäßen Vorsatzoptik in einer isometrischen Ansicht schräg von vorne gesehen;
• Fig. 6 eine dritte Ausführung einer erfindungsgemäßen Vorsatzoptik von oben gesehen;
• Fig. 7 die in Fig. 6 gezeigte dritte Ausführung einer erfindungsgemäßen Vorsatzoptik in einer isometrischen Ansicht schräg von vorne gesehen;
• Fig. 8 eine beispielsweise Lichtverteilung eines Scheinwerfers nach der Erfindung;
• Fig. 9 den Verlauf der Lichtstärke längs einer mittigen Linie der Fig. 8;
• Fig. 10 eine beispielsweise Lichtverteilung eines Scheinwerfers nach dem Stand der Technik;
• Fig. 11 den Verlauf der Lichtstärke längs einer mittigen Linie der Fig. 10.

Further details, features and advantages of the invention result from the following explanation of exemplary embodiments shown schematically in the drawings. In the drawings show:

• 1 schematic and diagrammatic representation of components of a motor vehicle headlight according to the invention, namely a lighting unit together with a superior projection lens;
• 2 in a diagrammatic representation of a lighting unit according to the invention with an attachment optics, seen obliquely from behind in the direction of the light coupling surfaces of the light guide elements;
• 3 seen a first embodiment of an optical head according to the invention from the side;
• 4 a second embodiment of an optical attachment according to the invention seen from above;
• figure 5 in the 4 shown second embodiment of an optical attachment according to the invention seen obliquely from the front in an isometric view;
• 6 a third embodiment of an optical attachment according to the invention seen from above;
• 7 in the 6 shown third embodiment of an optical attachment according to the invention seen obliquely from the front in an isometric view;
• 8 an example light distribution of a headlight according to the invention;
• 9 the course of the light intensity along a central line of the 8 ;
• 10 an example light distribution of a headlight according to the prior art;
• 11 the course of the light intensity along a central line of the 10 .

In the representation after 1 one recognizes in a schematic view a lighting device 1 for a motor vehicle headlight 100 according to the invention with its essential components for explaining the invention. It is clear to the person skilled in the art that a motor vehicle headlight can have a large number of other components, not shown here, such as setting and adjusting devices, electrical supply means, screens, housing components and much more. If the term "headlight" is used in connection with the invention, this term should also include individual light or projection modules, which can also be contained in combination in a superordinate headlight.

In this and the following figures, the same reference numbers are used for the same or comparable elements for the purpose of simpler explanation and representation. The reference signs used in the claims are only intended to facilitate the legibility of the claims and the understanding of the invention and in no way have any character affecting the protective scope of the invention.

Shown in 1 is therefore a lighting device 1 which comprises a lighting unit 2 with a plurality of light sources 3 . The light sources 3 are embodied here as LEDs, for example. An attachment optics 4 or primary optics with a light exit surface 5 of the attachment optics 4 here has a plurality of light-guiding elements 6 which are arranged in a matrix arrangement 7 . The light exit direction 8 from the light sources 3 through the light guide elements 6 and the front optics 4 is symbolized by an arrow 8 . Furthermore, projection optics 10 , which include a projection lens, for example, are provided downstream of the attachment optics 4 in the light exit direction 8 .

The light exit surface 5 is designed with light decoupling optics 50 arranged in rows, which are arranged here in three essentially horizontal rows 51 of the light decoupling optics 50 . The light decoupling optics 50 each have convex curvatures 56 .

2 shows a lighting unit 2 with an attachment optics 4 seen obliquely from behind in the direction of light coupling surfaces 61 of the light-guiding elements 6 . An LED as light source 3 is assigned to each light coupling surface 61 of the light guide elements 6 . The light guide elements 6 each open with their light decoupling surfaces 62 in the common light exit surface 5 of the attachment optics 4. The light guide elements 6 are arranged in a matrix arrangement 7 here in three matrix rows 71 and in a large number of matrix columns 72. The matrix rows 71 are according to 2 oriented substantially in the horizontal direction, while the matrix columns 72 are oriented substantially in the vertical direction.

3 shows a first embodiment of an optical head 4 according to the invention seen from the side. Here, too, the light-guiding elements 6 are arranged in a matrix arrangement 7 in three matrix rows 71 . As can be seen here in the side view, the optical attachment 4 is formed without any curvature in its longitudinal direction and is therefore planar. Three light decoupling optics 50 are arranged in rows here on the light exit surface 5 of the attachment optics 4 , with each matrix row 71 on light guide elements 6 being assigned to a light decoupling optics 50 .

The bottom row 51 of the light decoupling optics 50 has a convex curvature 56 here, for example, with a contour shape 57 of the curvature that corresponds to a segment of a circle. The middle row 51 of the light decoupling optics 50 has, for example, a convex curvature 56' with a contour shape 58 of the curvature which corresponds to an elliptical segment. The upper row 51 of the light decoupling optics 50 has, for example, a convex curvature 56" with a contour shape 59 of the curvature, which is designed as a free-form curve segment. Between the individual rows 51 of the light decoupling optics 50, on their edges, decoupling grooves 55 are provided to limit the light decoupling optics 50 in their Provided longitudinally.

Corresponding light sources 3, which are assigned to the light-guiding elements 6 and which are arranged on their light-coupling surfaces 61, are not shown here or in the following figures for the sake of simplicity.

4 shows a second embodiment of an optical head 4 according to the invention seen from above. The attachment optics 4 is designed here as a Petzval surface 41 that is curved without kinks. According to this embodiment, it can be seen that light decoupling optics 50 are arranged on the light exit surface of the attachment optics 4 and have a uniform height 54 in the longitudinal direction 52 or line direction of the light decoupling optics 50 .

figure 5 shows the in 4 illustrated second embodiment of an optical head 4 according to the invention seen obliquely from the front in an isometric view. The bottom row 51 of the light decoupling optics 50 has a convex curvature 56 here, for example, with a contour shape 57 of the curvature that corresponds to a segment of a circle. The middle line 51 of the light decoupling optics 50 has, for example, a convex curvature 56' with a Contour shape 58 of the bulge corresponding to a segment of an ellipse. The upper row 51 of the light decoupling optics 50 has, for example, a convex curvature 56" with a contour shape 59 of the curvature, which is designed as a free-form curve segment. Between the individual rows 51 of the light decoupling optics 50, on their edges, decoupling grooves 55 are provided to limit the light decoupling optics 50 in their In the longitudinal direction 52 or in the row direction of the light decoupling optics 50, these each have constant widths 53 and constant heights 54. The convex curvatures 56, 56', 56" or the respective contour shapes 57, 58, 59 of the light decoupling optics 50 are therefore each designed uniformly in the longitudinal direction 52 or in the row direction.

6 shows a third embodiment of an optical attachment 4 according to the invention seen from above. The attachment optics 4 is designed here as a Petzval surface 41 that is curved without kinks. In contrast to the execution according to 4 is at the in 6 shown embodiment that on the light exit surface 5 of the optical attachment 4 a light decoupling optics 50 is arranged, which in the longitudinal direction 52 or line direction of the light decoupling optics 50 have different heights 54, 54 '. Here, the upper light decoupling optics 50 has a height 54′ approximately in the middle of its longitudinal direction 52, which is greater than the material thickness with a height 54 on the two lateral edge sections of the upper light decoupling optics 50.

7 shows the in 6 illustrated third embodiment of an optical head 4 according to the invention seen obliquely from the front in an isometric view. The bottom row 51 of the light decoupling optics 50 has a convex curvature 56 here, for example, with a contour shape 57 of the curvature that corresponds to a segment of a circle. The middle row 51 of the light decoupling optics 50 has, for example, a convex curvature 56' with a contour shape 58 of the curvature which corresponds to an elliptical segment. The upper row 51 of the light decoupling optics 50 here has, for example, a convex curvature 56" with a contour shape 59 of the curvature, which is designed as a free-form curve segment. Between the individual rows 51 of the light decoupling optics 50, on their edges, decoupling grooves 55 are in turn provided for delimiting the light decoupling optics 50 in The lower two light decoupling optics 50 each have constant widths 53 and constant heights 54 in the longitudinal direction 52 or in the row direction of the light decoupling optics 50. The upper light decoupling optics 50, which here, for example, has a contour shape 59 of the curvature, which is designed as a free-form curve segment , has different widths 53, 53' and different heights 54, 54' in the longitudinal direction 52 or in the line direction of the light decoupling optics 50. Here, the upper light decoupling optics 50 has a width 53' approximately in the middle of its longitudinal direction 52, which is smaller than its width 53 each on d en both lateral edge portions of the upper light extraction optics 50. The upper light extraction optics 50 is further roughened with a Surface 9 equipped, which have microstructures 90 with characteristic lengths of a magnitude here of about 5 microns (microns).

The following explanation for the comparison of Figures 8 to 11 makes the advantages of the invention even clearer.

8 shows an example light distribution of an individual light guide element of a lighting unit, which is designed according to the invention with a light decoupling optics on the light exit surface of the attachment optics, with drawn lines of the same light intensity.

9 shows in a diagram the course of the light intensity Iv along the drawn central line z of 8 , where the left side of the chart corresponds to the bottom of the 8 is equivalent to.

10 corresponds to the representation of the 8 However, a light guide element of a lighting unit according to the prior art was measured here, which has a planar light exit surface of the attachment optics without a light decoupling optics. Undesirable scattered light areas can be seen on both sides of the desired light image, which are less pronounced in the light-guiding element according to the invention than the one shown opposite 8 indicates. In addition, a less steeply falling intensity profile in the lower and upper area of the light intensity profile can be seen in comparison to a light-guiding element with decoupling optics according to the invention, which is illustrated by the lines of equal light intensity spaced further apart in the vertical direction.

In 11 , which adheres to the diagram of 9 corresponds, but was determined for a light guide element according to the prior art without a light decoupling optics on the light exit surface of the attachment optics, it can be seen that the light intensity profile Iv has a lower maximum light intensity than that of a light guide element according to the invention, as compared with the opposite 9 indicates. The disadvantageously less steep drop in the left and right area of the light intensity profile can also be seen.

With a motor vehicle headlight of the type shown, for example, a low beam or a high beam can be generated, for which, for example, the left headlight and the right headlight are each designed as headlights according to the invention, with which the left and right parts of the light distribution of a motor vehicle equipped accordingly are generated. On the other hand or alternatively the left-hand and right-hand headlights of a motor vehicle equipped with headlights according to the invention also produce identical light images that are superimposed in advance on the road.

LIST OF REFERENCE MARKS

1

lighting device

2

lighting unit

3

Light source, such as LED

4

Attachment optics, primary optics

5

Light exit surface of the attachment optics

6

light guide element

7

Matrix arrangement of the light guide elements

8th

Light emission direction (arrow)

9

roughened surface

10

projection optics

41

Petzval area

50

light extraction optics

51

line of light decoupling optics

52

Longitudinal or row direction of the light decoupling optics (arrow)

53

Width of the light decoupling optics (or 53')

54

Height of the light extraction optics (or 54')

55

decoupling groove

56

Curvature of the light decoupling optics (or 56', 56")

57

Contour shape of the curvature, for example as a circle segment

58

Contour shape of the bulge, for example as an elliptical segment

59

Contour shape of the bulge, for example as a free-form curve segment

61

Light coupling surface of the light guide element

62

Light decoupling surface of the light guide element

71

Matrix line of light guide elements

72

Matrix column of the light guide elements

90

microstructure

100

motor vehicle headlights

Claims (13)

1. Lighting device (1) for a motor vehicle headlamp (100), comprising a lighting unit (2) with at least one light source (3), with at least one primary optics (4) and a projection optical system (10) arranged downstream of the primary optics (4) in the light exit direction (8), the at least one primary optics (4) having several light guide elements (6) and a light exit surface (5), each light guiding element (6) comprising a light coupling surface (61) for feeding in light from at least one light source (3) and a light extraction surface (62), and the light extraction surfaces (62) of the several light guiding elements (6) opening into the common light extraction surface (5) of the primary optics (4),
   characterized in that
   the light exit surface (5) has, at least in sections thereof and in at least two rows (51), light extraction optics (50) having a convex curvature (56) and arranged directly adjacent to each other, wherein between the individual rows (51) of the adjacent light extraction optics (50) extraction grooves (55) are provided for delimiting the edges of the light extraction optics (50) in a row direction thereof, wherein respectively several light guide elements (6), arranged in a matrix arrangement (7) next to each other line by line in a matrix line (71), are with their light extraction surfaces (62) associated to a common light extraction optics (50).
2. Lighting device (1) according to claim 1, characterized in that several light guide elements (6) are arranged in a matrix arrangement (7) in at least two matrix rows (71) as well as in several matrix columns (72).
3. Lighting device (1) according to any one of claims 1 or 2, characterized in that to each matrix row (71) of light guiding elements (6) a respective row (51) of light extraction optics (50) is associated.
4. Lighting device (1) according to any one of claims 1 to 3, characterized in that a contour shape (57, 58, 59) of the convex curvature (56) of a light extraction optics (50) is selected from a group comprising: circular segment, elliptical segment, free-form curved segment.
5. Lighting device (1) according to claim 4, characterized in that the contour forms of the curvature (56) of several lines (51) of the light extraction optics (50) have equal shape.
6. Lighting device (1) according to claim 4, characterized in that the contour forms of the curvature (56) of at least two lines (51) of the light extraction optics (50) are different.
7. Lighting device (1) according to any one of claims 1 to 6, characterized in that each line (51) of the light extraction optics (50) respectively has a constant width (53) along the line direction (52) and a uniform contour shape of the curvature (56).
8. Lighting device (1) according to any one of claims 1 to 6, characterized in that at least one line (51) of the light extraction optics (50) has, along the line direction (52) at least in sections, different widths (53, 53') and/or different heights (54, 54') and/or different contour shapes of the curvature (56, 56', 56").
9. Lighting device (1) according to any one of claims 1 to 8, characterized in that at least one light extraction optics (50) has a surface section having microstructures (90) of a roughened surface (9).
10. Lighting device (1) according to any one of claims 1 to 9, characterized in that the light exit surface (5) of the primary optics (4) is a surface curved without kinks in the line direction (52), preferably a Petzval surface (41) curved without kinks.
11. Lighting device (1) according to any one of claims 1 to 10, characterized in that the light guide elements (6) are arranged in matrix arrangement (7) in exactly three matrix rows (71) arranged one above the other, the light guide elements (6) together forming a main beam distribution, each matrix row (71) of light guide elements (6) being assigned to a light extraction optical system (50), and preferably the upper matrix row being designed as a front beam row, the middle matrix row as an asymmetric row and the lower matrix row as a main beam row.
12. Light module with at least one lighting device (1) according to any one of the claims 1 to 11.
13. Vehicle headlamp (100) having at least one lighting device (1) according to any one of claims 1 to 11 and/or having at least one light module according to claim 12.

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