EP3765780A1

EP3765780A1 - Lighting device for a motor vehicle headlight

Info

Publication number: EP3765780A1
Application number: EP19709947.6A
Authority: EP
Inventors: Lukas Taudt; Nina Brauner; Mathias SCHRAGL; Josef Hechenberger; Matthias Kern; Christoph Längauer
Original assignee: ZKW Group GmbH
Current assignee: ZKW Group GmbH
Priority date: 2018-03-15
Filing date: 2019-03-12
Publication date: 2021-01-20
Anticipated expiration: 2039-03-12
Also published as: KR20200120700A; EP3540296A1; CN111886445A; WO2019175137A1; EP3765780B1; KR102464206B1

Abstract

The invention relates to a lighting device (1) for a motor vehicle headlight (100), comprising a lighting unit (2) having at least one light source (3) and having at least one attachment optical unit (4), wherein the at least one attachment optical unit (4) has a plurality of light guiding elements (6) and a light exit surface (5), wherein each light guiding element (6) has a light coupling-in surface (61) for feeding in light from at least one light source (3), and wherein light coupling-out surfaces (62) of the light guiding elements (6) lead to the common light exit surface (5) of the attachment optical unit (4). The light exit surface (5) has, at least in sections, a light coupling-out optical unit (50) having convex curvature (56) and having coupling-out grooves (55) at the edges of the light coupling-out optical unit (50), wherein in each case a plurality of light guiding elements (6) with the light coupling-out surfaces (62) thereof are assigned to a light coupling-out optical unit (50). Furthermore, a light module and a vehicle headlight (100) having at least one lighting device (1) are specified in the context of the invention.

Description

LIGHTING DEVICE FOR A MOTOR VEHICLE HEADLAMP

The invention relates to a lighting device for a

Motor vehicle headlamp, which comprises a lighting unit with at least one light source, with at least one optical attachment and a downstream in the light exit direction of the attachment optics projection optics, the at least one attachment optics multiple Lichtleitelemente and a light exit surface, each Lichtleitelement has a light input surface for feeding light at least one light source, and wherein light outcoupling surfaces of the light guide elements open in the common light exit surface of the attachment optics.

A lighting device of this kind is for example from the document

WO 2013/166535 A2 known. Essential for a practicable light image is in such a lighting device for a motor vehicle headlight, the formation of the optical attachment with appropriate light-guiding elements, in which the light through

Total reflection is guided at the boundary walls.

Furthermore, document DE 10 2015 224 745 A1 discloses an illumination device for a motor vehicle headlamp, in which the light exit surface has at least sections a light extraction optic with convex curvature and with outcoupling grooves at the edges of the light extracting optical system, wherein in each case a plurality of light guide elements with their light outcoupling surfaces a Lichtauskoppeloptik assigned.

From the document EP 2306 074 A2 is a motor vehicle headlight with a

Light module, which is a matrix-like arrangement of semiconductor light sources, a

Primary optics and secondary optics known. The secondary optics has there an achromatisch acting arrangement, which optionally has at least two lenses with a different refractive index or a composite of a positive lens and a diffractive optics.

A disadvantage of such known from the prior art

Lighting equipment is usually that, especially in versions of the

Primary optics as a matrix system forms unwanted scattered light around the individual matrix segments. This scattered light formation adversely reduces the imaging quality of the individual matrix segments. In addition, it may be due to the scattered light - depending from the respective statutory regulation - to problems in the homologation of motor vehicle headlights due to the standards and limit values to be met.

One of the objects of the invention is to optimize the shape of the attachment optics, in particular with regard to an even better homogeneity and maximum brightness of the generated photo, in a lighting device of the subject type. Moreover, 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 of the type mentioned, in which the light exit surface of the optical attachment at least partially at least two arranged in rows Lichtauskoppeloptiken with convex curvature, between the individual rows of Lichtauskoppeloptiken Auskoppelrillen for limiting the edges of the Lichtauskoppeloptiken are provided in the longitudinal direction , wherein in each case a plurality of light guide elements are associated with their light outcoupling surfaces of a light extraction optics.

Thanks to the invention results for each inventively designed

Lighting device, a light distribution with less disturbing areas, less scattered light component, and a higher maximum light intensity at the light exit surface of the attachment optics or in the generated photograph. By the use of one or more Lichtauskoppeloptiken, in the light exit direction at the light exit surface of

Are arranged intent optics, the light image generated by the light guide elements can be improved, the imaging quality of individual light sources or individual

Light guiding elements are increased and the formation of unwanted scattered light can be reduced. The light exit surface has for this at least in sections or over its entire surface distributed on one or more Lichtauskoppeloptiken, each Lichtauskoppeloptik having a convex curvature and at their edges

Auskoppelrillen has. In each case several light-guiding elements are with their

Lichtauskoppelflächen assigned to a light extraction optics. With this

In addition, further advantages can be achieved according to the invention of a lighting device: Homologation can thus be newly developed

Motor vehicle headlights are easier, since the expert hereby has a suitable means at hand to reduce or avoid unwanted scattered light. In addition, advantageous lighting effects can be achieved with a lighting device according to the invention. So can by the use of suitable

Lichtauskoppeloptiken example, a cornering light to be pulled further outward. Advantageously, a plurality of light-guiding elements may be integrally connected to one another in their front region, that is to say that region which comprises the light outcoupling surfaces of the light-guiding elements in the light exit direction, since this facilitates the manufacture and leads to a compact and stable optical attachment. It may be useful if the light outcoupling surfaces of the light guide coincide with the light exit surface of the attachment optics.

In a lighting device according to the invention, a plurality of light-guiding elements may expediently be 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 lines and in numerous matrix columns next to one another. In the following, the

Matrix arrangement also described by means of directional information. Accordingly, matrix lines are arranged essentially in the horizontal direction, while matrix columns run essentially in the vertical direction. This association of the terms with respect to a location or orientation, such as "horizontal", "vertical", "horizontal direction", "vertical direction", "top", "bottom", "front", "below", " etc. "are chosen in the description for convenience only and may refer to the illustration in the drawings, but not necessarily to a use or installation position of the lighting device or the motor vehicle headlight.

The term matrix arrangement should also apply in the context of the subject application in the extreme case in which the matrix is a single line, thus only a number of light-guiding elements is present, which makes sense in the automotive lighting technology.

Experience has shown that the construction of a lighting device for a

Motor vehicle headlight or a light module with matrix-like arrangement then particularly efficient when the light-guiding elements are arranged in exactly three superposed matrix rows or rows, which together form a high beam distribution. In such an arrangement, the upper matrix row may be formed as a front row row, the middle matrix row as an asymmetrical row, and the lower matrix row as a high beam row, wherein the high beam row may be configured with high-beam light-guiding elements with corresponding constrictions. Preferably, each light guide is assigned to a light source, in particular one LED or multiple LEDs. In the context of the invention, however, a plurality of light sources can also be assigned to a light-guiding element or vice versa, depending on the design, a single light source can also be assigned to a plurality of light-guiding elements. Likewise, other light sources can be used as LEDs. The light-guiding elements can be produced, for example, from highly transparent, photoconductive and moldable plastics which are well suited for the production of complex geometries. Silicone materials are particularly preferred. However, it is also the use of glasses possible. In the case of integrally interconnected light-guiding elements or a one-piece lighting unit, the use of plastics for producing the lighting unit and / or the light-guiding elements is preferred.

It can be particularly advantageous if, in the case of a lighting device according to the invention, a plurality of light-conducting elements which are arranged next to one another line-by-line in a matrix line are assigned to a light-extraction optical system. Suitably, in this embodiment, a plurality of light-guiding elements are assigned line by line to a common light-extraction optical system. Thus, the image quality of several light-guiding elements can be improved line by line very efficiently. Optionally, all light guide elements, the

are arranged side by side in a matrix row, be associated with a single light extraction optics.

In other cases, it may be advisable, if in an inventive

Lighting device which are arranged in at least two mutually spaced matrix lines arranged light guide elements line by line each different lines also spaced-apart Lichtauskoppeloptiken. Thus, the

Image quality of the matrix-like arranged light guide elements line by line can be improved by the use of line-wise associated Lichtauskoppeloptiken.

Particularly advantageous in a lighting device according to the invention can be arranged line by line in two directly adjacent matrix lines

Be assigned light guide each row-wise arranged Lichtauskoppeloptiken, with directly adjacent lines of the light extraction optics a

have intervening Auskoppelrille. The one or more Auskoppelrillen can on the light exit surface of the optical attachment in the longitudinal direction or in

Line direction of the light extraction optics extend along a plurality of light guide elements. Likewise, one or more Auskoppelrillen in the longitudinal direction or in

Line direction along the entire length of the light exit surface extend. In a further preferred embodiment of the invention, one line of the light extraction optics can be assigned to each matrix row of light-guiding elements in a lighting device.

According to another preferred embodiment of the invention can in a

Lighting device a contour shape of the convex curvature of a

Lichtauskoppeloptik be selected from a group comprising: circular segment,

Ellipse segment, freeform curve segment. Advantageously, differently contoured light extraction optics can be used in this embodiment. For example, it is possible to use a lighting device in which a three-row matrix arrangement of light-guiding elements with an optical attachment, which is equipped with differently shaped light-extraction optics line by line on the light exit surface, is improved in its light image. For example, the top of three matrix lines may be on

Light guide be associated with a first Lichtauskoppeloptik, the convex

Has a curvature with the contour of a circle segment with a radius of 10 mm.

By way of example, the middle of three matrix rows of light-conducting elements may be assigned a second light-extraction optical system which has a convex curvature with the contour of a circle segment with a radius of 5 mm. For example, the lower of three matrix rows of light-guiding elements can be assigned a third light-extraction optical system 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 such that adjacent to a section or a row of a light extraction optic with a contoured convex curvature, a planar section or a planar line of the

Light exit surface is provided. Such planar sections of the light exit surface can also be provided between two attachment optics.

In one embodiment of the invention can in a lighting device the

Contour shape of the curvature of several lines of Lichtauskoppeloptiken each be designed the same. In this expedient embodiment, which is inexpensive to produce, the light exit surface of the attachment optics, each with the same contoured lines of

Light extraction optics covered. Expediently, in a preferred variant, the same number of lines are provided on light extraction optics as matrix lines on 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 extraction optics be different. In this embodiment can be particularly flexible the

Increase imaging quality of individual light sources or individual light-guiding elements.

In a lighting device, each line can be particularly advantageous

Lichtauskoppeloptiken each have a constant width and a uniform contour shape of the curvature in the row direction. In this embodiment, the Lichtauskoppeloptiken line by line or in the row direction are respectively homogeneous, which is advantageous for cost-effective production.

In an alternative embodiment of the invention, at least one row of the light extraction optics in the row direction may be at least one in a lighting device

sections have different widths and / or different heights and / or different contour shapes of the curvature. In this embodiment, individual or even a plurality of light extraction optics in the longitudinal direction or in the row direction along the length of the light exit surface of the optical attachment sections may have different dimensions. For example, it may be expedient if a luminous coupling device arranged line by line has a greater width and / or a greater height and a convex curvature with a larger radius of curvature - and thus a greater material height - than at their lateral edge sections in each case to the narrow sides of the Intent optics out.

In a further preferred embodiment of the invention can in a

Lighting device at least one light extraction optics have a surface portion with microstructures of a roughened surface. Such microstructures in the area of the light extraction optics can for example offer the advantage that a particularly homogeneous light image is generated by the illumination device.

For example, such microstructures can be considered as scar-like roughness on the

Surface of the light extraction optics be executed, wherein the characteristic lengths may have an order of magnitude, for example, of 5pm (microns).

Advantageously, this graining can be applied at least in sections to the light extraction optics associated with the front row row.

It may be advantageous if, in the case of an illumination device, the light exit surface of the attachment optics is a surface bent kink-free in the longitudinal direction or in the row direction, preferably a Petzval surface bent without kinking. Advantageously, the

Light exit surface, in particular in a matrix arrangement of the light guide thus no creases in the direction of the matrix columns, ie substantially in the vertical direction, on. Thus, the light extraction optics in the row direction and in Lengthwise no annoying kinks or interruptions. The

Lichtauskoppeloptiken be limited only by the Auskoppelrillen which run in the direction of the matrix lines, ie in a substantially horizontal direction.

The common light exit surface is typically a curved surface, usually the Petzval surface of the imaging optics - for example, a

Imaging lens - follows. For certain applications but also conscious

Deviations in the curvature can be used in order to use aberrations in the edge region for light homogenization.

In the context of the invention may also be a light module with at least one

Lighting device according to the invention can be specified. If the term "headlight" is used in connection with the invention, then this term should also include individual light modules or projection modules, which may also be included in combination in a higher-level headlight.

In the context of the invention, however, it is also possible to use a vehicle headlight with at least one illumination device and / or with at least one light module with at least one illumination device according to the invention. By way of example, such a vehicle headlight can furthermore comprise a projection optical system arranged downstream of the lighting unit in the light exit direction.

Further details, features and advantages of the invention will become apparent from the following explanation of exemplary embodiments schematically illustrated in the drawings. In the drawings show:

- Fig. 1 schematically and in diagrammatic representation components of a

motor vehicle headlamp according to the invention, namely a lighting unit together with a _V pre-projection lens;

- Fig. 2 in perspective view of a light unit according to the invention with a

Front optics, diagonally from behind in the direction of the light coupling surfaces of the

Seen light guide elements;

FIG. 3 shows a first embodiment of a front optical system according to the invention seen from the side; FIG.

- Figure 4 shows a second embodiment of a fiction, contemporary intent optics seen from above.

5 shows the second embodiment of a front optical system according to the invention shown in FIG. 4 in an isometric view obliquely viewed from the front; FIG.

- Figure 6 is a third embodiment of a fiction, contemporary intent optics seen from above.

- Figure 7, the third embodiment of a fiction, contemporary intent optics shown in Figure 6 in an isometric view seen obliquely from the front.

FIG. 8 shows, for example, a light distribution of a headlamp according to the invention; FIG. FIG. 9 shows the course of the light intensity along a central line of FIG. 8; FIG.

FIG. 10 shows, for example, a light distribution of a headlamp according to the prior art

Technology;

11 shows the course of the light intensity along a central line of FIG. 10.

In the illustration of Fig. 1 can be seen in a schematic view a

Lighting device 1 for a motor vehicle headlight 100 according to the invention with its essential for explaining the invention components. It is clear to those skilled in the art that a motor vehicle headlamp may have a variety of other, not shown here components, such as adjustment and adjustment, electrical supplies, panels, housing components and much more. If the term "headlight" is used in connection with the invention, then this term should also include individual light or projection modules, which may also be contained in combination in a higher-level headlight.

In this and the following figures, like reference numerals are used for the same or similar elements for ease of explanation and illustration. The reference numerals used in the claims are only the readability of

Claims and understanding of the invention facilitate and in no way have a character that obscures the scope of the invention.

Illustrated in FIG. 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 designed here as LEDs, for example. An attachment optics 4 or primary optics with a light exit surface 5 of the attachment optics 4 has here a plurality of light guide elements 6, which are arranged in a matrix arrangement 7. The light exit direction 8 from the light sources 3 through the

Light guide 6 and the optical attachment 4 through is symbolized by an arrow 8. Furthermore, in the light exit direction 8 of the attachment optics 4 downstream of a projection optics 10 is provided which includes, for example, a projection lens.

The light exit surface 5 is configured with line-out light extraction optics 50, which here in three substantially horizontal lines 51 of

Lichtauskoppeloptik 50 are arranged. The light extraction optics 50 each have convex bulges 56.

FIG. 2 shows a lighting unit 2 with an attachment optics 4 seen obliquely from the rear in the direction of light coupling surfaces 61 of the light guide elements 6. Each light coupling surface 61 of the light-guiding elements 6 here is assigned an LED as the light source 3. The light-guiding elements 6 open with their light output surfaces 62 each in the common light exit surface 5 of the optical attachment 4. The light-guiding elements 6 are in matrix array 7 here in three

Matrix lines 71 and arranged in a plurality of matrix columns 72. 2, the matrix rows 71 are oriented essentially in the horizontal direction, while the matrix columns 72 are aligned substantially in the vertical direction.

FIG. 3 shows a first embodiment of a front optical system 4 according to the invention seen from the side. Here, too, the light-guiding elements 6 are arranged in matrix arrangement 7 in three matrix rows 71. As can be seen here in the side view, the optical attachment 4 is without curvature in the longitudinal direction and thus flat. At the light exit surface 5 of the optical attachment 4 three Lichtauskoppeloptiken 50 are arranged here line by line, each matrix line 71 is assigned to light-guiding elements 6 of a Lichtauskoppeloptik 50.

The lower line 51 of the light extraction optical system 50 here has, for example, a convex curvature 56 with a contour shape 57 of the curvature, which corresponds to a circular segment. The middle row 51 of the light extraction optics 50 here has, for example, a convex curvature 56 'with a contour shape 58 of the curvature, which corresponds to an elliptical segment. The upper line 51 of the light extraction optical system 50 here has, for example, a convex curvature 56 "with an outline shape 59 of the curvature, which is known as

Freeform curve segment is formed. Between the individual lines 51 of the

Lichtauskoppeloptiken 50 are provided at the edges Auskoppelrillen 55 for limiting the Lichtauskoppeloptiken 50 in the longitudinal direction.

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 and in the following figures for the sake of simplicity.

Fig. 4 shows a second embodiment of a front optical system 4 according to the invention seen from above. The attachment optics 4 is designed here as a kink-free curved Petzval surface 41. According to this embodiment, it can be seen that 4 light extraction optics 50 are arranged on the light exit surface of the optical attachment 4, which longitudinally 52 and

Row direction of the light extraction optics 50 have a uniform height 54.

Fig. 5 shows the illustrated in Fig. 4 second embodiment of an inventive

Front optics 4 seen in an isometric view obliquely from the front. The lower line 51 of the light extraction optical system 50 here has, for example, a convex curvature 56 with a contour shape 57 of the curvature, which corresponds to a circular segment. The middle line 51 of the light extraction optics 50 here has, for example, a convex curvature 56 'with a Contour shape 58 of the curvature, which corresponds to an elliptical segment. The upper line 51 of the light extraction optical system 50 here has, for example, a convex curvature 56 "with a curvature contour shape 59, which is formed as a free-form curve segment.From the individual lines 51 of the light extraction optics 50, outcoupling grooves 55 for delimiting the light extraction optics 50 are provided at their edges In the longitudinal direction 52 or in the row direction of the light extraction 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 extraction optics 50 are therefore in the longitudinal direction 52 and in the row direction in each case uniformly designed.

Fig. 6 shows a third embodiment of a front lens 4 according to the invention seen from above. The attachment optics 4 is designed here as a kink-free curved Petzval surface 41.

In contrast to the embodiment according to FIG. 4, it can be seen in the embodiment shown in FIG. 6 that a light extraction optics 50 is arranged on the light exit surface 5 of the attachment optics 4, which in the longitudinal direction 52 or row direction of the light extraction optics 50 have different heights 54, 54 '. exhibit. Here, the upper light extraction optics 50 approximately in the middle of its longitudinal direction 52 has a height 54 ', which is greater than the material thickness with a height 54 at the two lateral edge portions of the upper light extraction optics 50.

FIG. 7 shows the third embodiment of an inventive device shown in FIG

Front optics 4 seen in an isometric view obliquely from the front. The lower line 51 of the light extraction optical system 50 here has, for example, a convex curvature 56 with a contour shape 57 of the curvature, which corresponds to a circular segment. The middle row 51 of the light extraction optics 50 here has, for example, a convex curvature 56 'with a contour shape 58 of the curvature, which corresponds to an elliptical segment. The upper line 51 of the light extraction optics 50 here has, for example, a convex curvature 56 "with a contour shape 59 of the curvature, which is formed as a free-form curve segment, and between the individual lines 51 of the light extraction optics 50 are again at their edges

Auskoppelrillen 55 for limiting the Lichtauskoppeloptiken 50 provided in the longitudinal direction. The lower two light extraction optics 50 each have constant widths 53 and constant heights 54 in the longitudinal direction 52 and in the row direction of the light extraction optics 50, respectively. The upper light extraction optics 50, which by way of example here has a contour shape 59 of the curvature, which is designed as a freeform curve segment, has in FIG

In the longitudinal direction 52 or in the row direction of the light extraction optics 50 different widths 53, 53 'and different heights 54, 54'. Here the upper one points

Lichtauskoppeloptik 50 approximately centrally of its longitudinal direction 52 a width 53 ', which is smaller than the width 53 respectively at the two lateral edge portions of the upper

Lichtauskoppeloptik 50. The upper Lichtauskoppeloptik 50 is further with a roughened Surface 9 equipped with microstructures 90 having characteristic lengths in the order of about 5mih (microns) here.

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

FIG. 8 shows, for example, a light distribution of a single light-conducting element of a light-emitting unit, which according to the invention has a light-extraction optical system on the light-emitting device

Light exit surface of the attachment optics is formed, with marked lines of the same intensity.

9 shows a diagram of the course of the light intensity Iv along the

drawn central line z of Fig. 8, wherein the left side of the diagram corresponds to the lower portion of Fig. 8.

10 corresponds to the representation of FIG. 8, but here a light guide element of a lighting unit was measured according to the prior art, which is a planar

Has light exit surface of the attachment optics without a light extraction optics. One recognizes unwanted stray light areas on both sides of the desired light image, which are less pronounced in the light guide according to the invention, as the

opposite Fig. 8 shows. In addition, a less steeply sloping intensity curve in the lower and in the upper region of the light intensity curve in comparison to a

Light guide with coupling optics according to the invention recognizable, which is represented by the more distant in the vertical direction lines of the same light intensity.

In Fig. 11, which in itself corresponds to the diagram of Fig. 9, but for a

Light guide according to the prior art without a light extraction optics on the

Light exit surface of the attachment optics was determined, it can be seen that the

Luminous intensity course Iv has a lower maximum light intensity than that of a

Light guide according to the invention, as the comparison with the opposite Fig. 9 shows. Also, the disadvantageously less steep drop in the left and right of the light intensity profile can be seen.

With a motor vehicle headlight of the type shown, for example, a

Low beam or a high beam are generated, including, for example, the left headlight and the right headlamp are each designed as inventive headlamp, with which each of the left and right part of the light distribution of a suitably equipped motor vehicle are generated. Alternatively or alternatively the left and right headlights of a motor vehicle equipped with headlamps according to the invention also each produce identical photographs that overlap in advance on the road.

LIST OF REFERENCE SIGNS

lighting device

light unit

Light source, such as LED

Front optics, primary optics

Light exit surface of the attachment optics

light guide

Matrix arrangement of the light guide elements

Light exit direction (arrow)

roughened surface

projection optics

Petzval Pläche

Lichtauskoppeloptik

Line of light extraction optics

Longitudinal direction or row direction of the light extraction optics (arrow) width of the light extraction optics (or 53 ')

Height of the light extraction optics (or 54 ')

Auskoppelrille

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

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

Contour shape of the curvature, for example as an ellipse segment

Contour shape of the curvature, for example as Preiformkurvesegment

Light input surface of the light guide

Light output surface of the light guide

Matrix line of the light guide elements

Matrix column of the light-guiding elements

microstructure

Motor vehicle headlamps

Claims

CHANGED PATENT CLAIMS

1. Lighting device (1) for a motor vehicle headlight (100), comprising a lighting unit (2) with at least one light source (3), with at least one attachment optics (4) and in the light exit direction (8) of the attachment optics (4) downstream projection optics (10 ), wherein the at least one attachment optics (4) has a plurality of light guide elements (6) and a light exit surface (5), each light guide element (6) having a light coupling surface (61) for supplying light to at least one light source (3), and light coupling surfaces ( 62) of the light guide elements (6) in the common light exit surface (5) of the attachment optics (4) open,

characterized in that

the light exit surface (5) at least in sections at least two arranged in lines (51) Lichtauskoppeloptiken (50) with convex curvature (56), between the individual lines (51) of the Lichtauskoppeloptiken (50) Auskoppelrillen (55) for limiting the edges of the Lichtauskoppeloptiken (50) in their

Are provided in the longitudinal direction, wherein in each case a plurality of light guide elements (6) with their light outcoupling surfaces (62) are associated with a light extraction optics (50).

2. Lighting device (1) according to claim 1, characterized in that a plurality of light guide elements (6) in a matrix arrangement (7) in at least one matrix row (71) and in a plurality of matrix columns (72) are arranged.

3. Lighting device (1) according to claim 1 or 2, characterized in that a plurality of light guide elements (6), which are arranged line by line in a matrix line (71) side by side, a light extraction optics (50) are assigned.

4. Lighting device (1) according to one of claims 1 to 3, characterized

in that the light-guiding elements (6) arranged in at least two spaced-apart matrix rows (71) are assigned line by line to different lines (51) of light-extracting optics (50) spaced apart from one another.

5. Lighting device (1) according to one of claims 1 to 4, characterized

characterized in that arranged line by line in two directly adjacent matrix lines (71) light-guiding elements (6) arranged in rows

Lichtauskoppeloptiken (50) are assigned, with directly adjacent lines (51) of the Lichtauskoppeloptiken (50) have an intermediate Auskoppelrille (55).

6. Lighting device (1) according to one of claims 1 to 5, characterized in that each matrix line (71) of light-guiding elements (6) is associated with a respective line (51) of the light extraction optics (50).

7. Lighting device (1) according to one of claims 1 to 6, characterized

characterized in that an outline shape (57, 58, 59) of the convex curvature (56) of a light extraction optical system (50) is selected from a group comprising: circle segment, ellipse segment, freeform curve segment.

8. Lighting device (1) according to claim 7, characterized in that the contour shape of the curvature (56) of a plurality of lines (51) of the Lichtauskoppeloptiken (50) is designed in each case the same.

9. Lighting device (1) according to claim 7, characterized in that the contour shapes of the curvature (56) of at least two rows (51) of the

Lichtauskoppeloptiken (50) are different.

10. Lighting device (1) according to one of claims 1 to 9, characterized

characterized in that each line (51) of the light extraction optics (50) is in each case

Row direction (52) has a constant width (53) and a uniform contour shape of the curvature (56).

11. Lighting device (1) according to one of claims 1 to 9, characterized

characterized in that at least one row (51) of the light extraction optics (50) in the row direction (52) at least partially different widths (53, 53 ') and / or different heights (54, 54') and / or different contour shapes of the curvature (56, 56 ', 56 ").

12. Lighting device (1) according to one of claims 1 to 11, characterized

in that at least one light extraction optical system (50) has a surface section with microstructures (90) of a roughened surface (9).

13. Lighting device (1) according to one of claims 1 to 12, characterized

characterized in that the light exit surface (5) of the attachment optics (4) has an in

Row direction (52) kink-free curved surface, preferably a kink-free curved Petzval surface (41).

14. Light module with at least one illumination device (1) according to one of claims 1 to 13.

15. A vehicle headlight (100) with at least one illumination device (1) according to one of claims 1 to 13 and / or with at least one light module according to claim 14.