Signaling device or lighting device for a motor vehicle headlamp

Description

[0001] The invention relates to a signaling or lighting device for a motor vehicle or for a motor vehicle headlight, comprising: at least one light source for emitting light rays, a light guide body associated with the at least one light source, wherein the light guide body comprises a coupling section and a light exit region, wherein light rays emitted by the at least one light source are coupled into the light guide body via the coupling section, propagate in the light guide body, and exit from the light guide body via the light exit region, wherein the light exit region comprises two light exit surfaces, wherein the coupling section is designed such, e.g. in the form of a collimator, that the light rays emitted by the at least one light source are aligned substantially in a main light guide propagation direction, and wherein the light guide body comprises a beam splitter device, wherein the beam splitter device comprises a total reflection surface which totally reflects at least a portion of the light rays incident thereon,so that these light rays propagate in the light guide body in a direction deviating from the main propagation direction of the light guide, and wherein the total reflection surface has individual optical structures designed such that at least a portion of the light rays incident on an individual structure exits the light guide body via the individual structure and re-enters the light guide body via a re-entry surface, wherein the re-entered light rays are directed to one of the light exit surfaces, the "first" light exit surface, which first light exit surface is opposite the re-entry surface, so that these light rays can exit the first light exit surface in a main emission direction, and wherein the light rays totally reflected by the total reflection surface are totally reflected at a rear side of the light guide body and thereby redirected to the second light exit surface,where the light rays emerge from the light guide body in the direction of the main emission direction, wherein each individual optical structure is designed as a depression in the total reflection surface, wherein a depression, starting from an opening in the light guide body, extends into the, The light guide body is delimited by lateral surfaces extending into it, wherein one of the lateral surfaces, the so-called base surface, is oriented such that light rays incident on it pass through the base surface in the direction of the first light exit surface. Furthermore, the invention relates to a motor vehicle headlight comprising one or more such devices.

[0002] Furthermore, the invention relates to a motor vehicle comprising one or more such devices and / or one or more motor vehicle headlights according to the invention.

[0003] With such a device, as known from EP 2 354 637 A2, two lighting functions, such as a daytime running light (DRL) and a turn signal (FRA), can be realized with a single light guide. The light guide has two light exit surfaces, which form a common overall light exit surface.

[0004] For design reasons, specially shaped light-emitting surfaces are often desired. The device in question, for example, features two light-emitting surfaces, which are typically different in size and / or shape.

[0005] For example, the two light exit surfaces are located one above the other, with one of the light exit surfaces, e.g. the upper one, being at the same height, ie opposite one or more light sources which can couple light into the light body.

[0006] A beam splitter device is provided in the light guide body, which splits the coupled light to the two light exit surfaces.

[0007] It has proven difficult to achieve a homogeneous appearance in such a device when light emerges simultaneously from both light-emitting surfaces. This often necessitates a two-part design with two light guides, which, however, runs counter to the frequent desire for a one-piece design.

[0008] It is therefore an object of the invention to provide a solution for how a homogeneous appearance can be achieved for a device as described above.

[0009] This object is achieved with a device as described above in that, according to the invention, each opening occupies a surface, the so-called opening surface, in the total reflection surface, wherein an opening surface has an opening surface area AB,i, the total reflection surface has a total surface area A total, wherein A total contains the sum of all opening surface areas, and the first light exit surface has a first surface area A 1 and the second light exit surface has a second surface area A 2 , and wherein ∑ i A B , i / A ges − ∑ i A B , i / = A 1 / A 2

[0010] This general formula is valid under the assumption that the depressions, ie in particular the openings of the depressions, can be of different sizes. Preferably, it is provided that the depressions, in particular their openings, are of the same size, i.e. have the same opening area. If n depressions are provided, the above formula (AB is the area of ​​the opening area of ​​a depression) simplifies to n A B / A ges − n A B = A 1 / A 2

[0011] Assuming a flat total reflection surface, the opening surfaces lie in the plane of the total reflection surface. As described below, the total reflection surface can be faceted, i.e., divided into several, preferably flat, facets. In this case, the opening surfaces lie in the plane of the respective facet, from which the recess extends into the light guide body.

[0012] The design according to the invention ensures that the light emitted by the light source(s) is divided according to the ratio of the size of the two light exit surfaces, so that both light exit surfaces are irradiated with the same light intensity and thus have the same luminance or surface brightness.

[0013] It can be provided that one of the light exit surfaces, e.g. the lower light exit surface, has a larger surface area than the other, e.g. the upper light exit surface.

[0014] Advantageous embodiments of the invention are described in the dependent claims.

[0015] It can be provided that the further lateral surfaces are aligned substantially parallel to or in the direction of the light rays incident on the individual structure, ie preferably parallel to the main radiation direction.

[0016] This ensures that these lateral surfaces do not influence the light rays hitting the recess, or influence them as little as possible.

[0017] For example, it is provided that the recesses are pyramid-shaped, with a triangular opening, base surface and two lateral surfaces extending into the light guide body.

[0018] "Triangular" does not necessarily mean that the connecting lines between two vertices of the "triangle" must be straight (in this respect, it is a "modified" triangle). Likewise, "pyramidal" means that the shape of the depression is similar but not necessarily identical to a pyramid, for example, by having curved, not flat, surfaces.

[0019] It can be provided that the recesses are cylindrical in shape, at least in sections.

[0020] In this case, the recess is a "cutout" in the light guide or in the total reflection surface, with one surface area of ​​the recess being formed in the form of a portion of a cylinder shell. This surface area, or the height of the cylinder shell, runs essentially vertically.

[0021] The incident light rays are directed via this surface to the first light exit surface.

[0022] The depression is bordered by three further, preferably flat, lateral surfaces, which "open" into the opening of the depression.

[0023] Preferably, the base surface is curved, in particular into the light guide body.

[0024] A surface normal to the base surface thus runs essentially parallel to the main propagation direction of the optical fiber, wherein, for example, it is provided that the surface normal runs through the geometric center of the lateral surface and, in particular, runs normal to a tangential surface to the base surface at this center.

[0025] This curvature can achieve a splitting / expanding effect on an incident light beam of parallel light rays S1, so that the light rays are evenly distributed over the light exit surface and this shines evenly brightly.

[0026] It may be provided that the other lateral surfaces are flat.

[0027] For example, in the case of a cylindrical recess, two lateral surfaces and a bottom surface are provided, which are preferably flat.

[0028] Preferably, the flat lateral surfaces extend parallel to the main propagation direction of the optical fiber.

[0029] In particular, it can be provided that the individual structures are distributed uniformly and / or in rows and / or columns over the total reflection surface.

[0030] This ensures that the first light-emitting surface, as well as the second light-emitting surface, are "supplied" with light from the light sources over as much of their entire surface as possible.

[0031] It can be provided that two or more light sources are provided, wherein for one or more of the light sources the coupling section is designed in such a way, e.g. in the form of a collimator, that the light beams emitted by each light source are aligned substantially in the main optical fiber propagation direction, wherein the light sources are preferably arranged in a row, in particular laterally next to one another and transversely to the main optical fiber propagation direction.

[0032] Even in the case of only one light source, it is preferably provided that the coupling section is designed in the form of a collimator.

[0033] If multiple light sources are used, two light sources can also be provided per collimator, for example, one with a first color LED (e.g., like) and one with a second color LED (e.g., orange or yellow). This allows the device to implement two lighting functions: on the one hand, the function of a daytime running light / position light, and on the other, the function of a direction indicator. Homogeneity and radiation characteristics are similar for both lighting functions - the entire light-emitting surface either illuminates in the first color or flashes in the second color.

[0034] Furthermore, it can be provided that the light exit surfaces are directly adjacent to one another, in particular converge in a straight edge, and / or that one light exit surface is arranged above the other light exit surface.

[0035] In particular, the two light exit surfaces can be inclined at an angle greater than 90° to each other, resulting in a V-shaped arrangement of the two light exit surfaces to each other.

[0036] It can be provided that when the light exit surfaces are intersected with a horizontal surface, assuming that the light exit surfaces are flat, intersection lines are obtained which either run parallel to a straight line, or run diagonally to a straight line, where the distinguished straight line is a straight line which lies in a horizontal plane and is perpendicular to the main direction of light propagation.

[0037] Furthermore, it can be provided that a straight line of intersection resulting from a horizontal section through the total reflection surface, assuming that the total reflection surface is flat, either is parallel to the distinguished straight line or oblique to the distinguished straight line.

[0038] A total reflection surface arranged at an angle to the marked straight line enables the illumination of light guides or light exit surfaces that are obliquely shaped - seen in the main radiation direction - due to the light rays that are totally reflected in the corresponding direction.

[0039] It can be provided that the upper light exit surface is located approximately at the same height as the one or more light sources, and / or wherein preferably the total reflection surface is located approximately at the same height as the at least one light source.

[0040] Furthermore, it can be provided that the total reflection surface runs transversely to the main propagation direction of the optical fiber and is preferably inclined such that an upper edge region is closer to the at least one light source than a lower edge region.

[0041] It may be advantageous if the total reflection surface is divided into several facets, with facets lying side by side, and with the facets preferably each being rotated at an angle greater than 0° and less than 90° relative to the main propagation direction of the optical fiber.

[0042] For example, each facet represents a substantially rectangular, flat surface. The normal vector to this surface can be decomposed into a horizontal component lying in a substantially horizontal plane containing the optical fiber main propagation direction X, and a vertical component lying in a vertical plane normal to the plane parallel to the substantially horizontal plane.

[0043] Preferably, all facets are rotated by the same angle with respect to the main optical fiber propagation direction.

[0044] The angle mentioned above (twist angle) is the angle that the horizontal component of the normal vector makes to the main propagation direction of the optical fiber.

[0045] For example, the facets lie next to each other in one or more rows one above the other.

[0046] The facets have the advantage over a non-faceted total reflection surface (i.e. a continuous, flat total reflection surface) that if the second light exit surface runs obliquely to the main propagation direction of the light guide, the entire total reflection surface would have to be rotated by the said angle, which would require a lot of installation space.

[0047] It can be provided that the at least one light source is designed as an LED or comprises at least one LED.

[0048] The invention is explained in more detail below with reference to exemplary figures. Fig. 1 a perspective view of a first embodiment of a device according to the invention, Fig. 2 the device from Figure 1 in a view from above, Fig. 3 the device from Figure 1 in a schematic side view, Fig. 4 a schematic vertical section through a device from Figure 1 parallel to the main optical fiber propagation direction, Fig. 5 a detailed section of the total reflection surface of the device Figure 1 , Fig. 6 a detailed view of a depression in the total reflection surface of Figure 5 , Fig. 7a horizontal section through the recess from Figure 6 , Fig. 8 a vertical section parallel to the main optical fiber propagation direction through the recess of Figure 6 , Fig. 9 a second embodiment of a device according to the invention in a view from above, Fig. 10 a schematic vertical section through a device from Figure 9parallel to the main optical fiber propagation direction, Fig. 11 a detailed view of a depression in the total reflection surface of the device from Figure 11 , Fig.12a horizontal section through the recess from Figure 11 , and Fig. 13 a vertical section parallel to the main optical fiber propagation direction through the recess of Figure 11 .

[0049] The Figure 1 - 4show a signal light or lighting device 10 for a motor vehicle or for a motor vehicle headlight. The device 10 comprises a light guide body 100 and light sources 50 associated therewith. The light guide body 100 has a coupling section 110 and a light exit region 160. Light rays emitted by the light sources 50 can be coupled into the light guide body 100 via the coupling section 110, where they propagate in the light guide body 100 and exit the light guide body 100 via the light exit region 160.

[0050] The coupling section 110 is designed, for example in the form of a collimator 111 or several collimators, such that the light beams emitted by the at least one light source 50 are essentially aligned in a main optical fiber propagation direction X and propagate in the direction S1 parallel to the main optical fiber propagation direction X in the optical fiber body 100.

[0051] The light sources 50 are preferably arranged in a row, in particular laterally next to one another and transversely to the main optical fiber propagation direction X. The light sources are each designed, for example, as LEDs or comprise at least one LED.

[0052] The light exit area 160 comprises two light exit surfaces 161, 162. The light exit surfaces 161, 162 are directly adjacent to one another and converge at a straight edge. A (first) light exit surface 161 is located above the other, second light exit surface 162. The two light exit surfaces 161, 162 are inclined to one another at an angle that is preferably greater than 90°, resulting in a V-shaped arrangement of the two light exit surfaces relative to one another.

[0053] Preferably, as shown, the upper light exit surface 161 is approximately at the same height as the one or more light sources 50, and preferably the total reflection surface 201 is also approximately at the same height as the at least one light source 50.

[0054] It can be provided that one of the light exit surfaces, e.g. the lower light exit surface 162, has a larger surface area than the other, e.g. the upper light exit surface 161.

[0055] The light guide body 100 preferably consists of a transparent solid body which is formed from a transparent material in which the coupled light can propagate.

[0056] The light guide body 100 has a beam splitter device 200, wherein the beam splitter device 200 comprises a total reflection surface 201, which totally reflects at least a part of the light rays S1 incident on it, so that these totally reflected light rays S3 propagate in the light guide body 100 in a direction Z deviating from the main propagation direction X of the light guide, in particular downwards.

[0057] The total reflection surface 201 has individual optical structures 202 which are designed such that at least a portion of the light rays S1 incident on an individual structure 202 exits the light guide body 100 via the individual structure 202 and re-enters the light guide body 100 via a re-entry surface 203, wherein the re-entered light rays S2 are directed to the first light exit surface 161, which is opposite the re-entry surface 203, so that these light rays exit the first light exit surface 161 in a main emission direction Y (light rays S4).

[0058] The light exit surface 161 and / or the re-entry surface 203 can have optical structures or elements in order to direct the exiting light S4 in a desired direction (the main emission direction Y).

[0059] The light rays S3 totally reflected by the total reflection surface 201 are totally reflected again at a rear side 101 of the light guide body 100 and are thereby deflected to the second light exit surface 162 light rays S3', where the light rays S5 also exit the light guide body 100 in the direction of the main emission direction Y.

[0060] The second light exit surface 162 can in turn have optical structures in order to emit the light rays S5 in the desired direction and / or to ensure further homogenization of the emitted light.

[0061] In the Figure 1 - 4 , especially in Figure 2 It can be seen that in this embodiment the total reflection surface 201, but also the light exit surfaces 161, 162 run obliquely to the main propagation direction X of the light guide.

[0062] This can also be seen in the fictitious lines g50, g161, g162, g201. If the light exit surfaces 161, 162 are intersected with a horizontal surface, the intersection lines g161, g162 result, assuming that the light exit surfaces 161, 162 are flat.

[0063] Furthermore, a so-called "distinguished" straight line g50 can be seen, which lies in a horizontal plane and runs perpendicular to the main light propagation direction X. In the example shown, the row of light sources 50 runs parallel to the distinguished straight line g50.

[0064] In the present example, the two straight lines g161, g162 run obliquely to the distinguished straight line g50 and obliquely to the main direction of light propagation X.

[0065] The straight line g201, which results from a horizontal section through the total reflection surface 201, assuming that the total reflection surface 201 is flat, also runs obliquely to the distinguished straight line g50.

[0066] The straight lines g161, g162, g203 can be arranged parallel to each other, but can also be inclined to each other.

[0067] In particular, it can be provided that the individual structures 202 are distributed uniformly and / or in rows and / or columns over the total reflection surface 201, as shown in the figures, e.g. Figure 1 or Figure 5 is clearly visible.

[0068] This makes it possible to ensure that the first light exit surface 161, but also the second light exit surface 162, are "supplied" with light from the light sources over as much of their entire surface as possible.

[0069] When using the Figure 1 - 8In the embodiment described, it is further advantageously provided that the total reflection surface 201 is divided into a plurality of facets 201A, wherein facets 201A are arranged laterally adjacent to one another, and wherein the facets are preferably each rotated at an angle greater than 0° and less than 90° relative to the optical fiber main propagation direction X. Preferably, all facets are rotated by the same angle relative to the optical fiber main propagation direction X.

[0070] For example, each facet represents a substantially rectangular, flat surface. The normal vector to this surface can be decomposed into a horizontal component, which lies in a substantially horizontal plane containing the main optical fiber propagation direction X, and a vertical component, which lies in a vertical plane normal to the plane parallel to the substantially horizontal plane. The angle mentioned above (angle of rotation) is the angle that the horizontal component of the normal vector makes with respect to the main optical fiber propagation direction X.

[0071] The facets, for example, are arranged next to one another in one or more superimposed rows. Compared to a non-faceted total reflection surface (i.e., a continuous, flat total reflection surface), facets have the advantage that, if the second light exit surface were angled to the main propagation direction of the light guide, the entire total reflection surface would have to be rotated by the aforementioned angle, which would require a considerable amount of installation space. Faceting eliminates the need to rotate a large, continuous surface; instead, "only" a number / multiplicity of non-facets are rotated, which, due to their significantly smaller lateral extension compared to a continuous surface, require very little installation space.

[0072] Returning to the individual optical structures 202 and considering the Figure 5 - 8it can be seen that each individual structure 202 is formed as a depression in the total reflection surface 201 or, more precisely, as a depression in the light guide body 100, starting from the total reflection surface 201.

[0073] Such a depression is delimited, starting from an opening 2021 in the light guide body 100 (ie in the total reflection surface), by lateral surfaces 2022, 2023, 2024 extending into the light guide body 100, wherein one of the lateral surfaces, the so-called base surface 2022, is oriented such that light rays S1 incident on it pass through the base surface 2022 in the direction of the first light exit surface 161.

[0074] In this example, the recesses 202 are pyramid-shaped, with a triangular opening 2021 and base surface 2022 and the two further lateral surfaces 2023, 2024 extending into the light guide body 100.

[0075] "Triangular" does not necessarily mean that the connecting lines between two vertices of the "triangle" must be straight (in this respect, it is a "modified" triangle). Likewise, "pyramidal" means that the shape of the depression is similar but not necessarily identical to a pyramid, for example, by having curved, not flat, surfaces.

[0076] The two further lateral surfaces 2023, 2024 are preferably flat and are aligned substantially parallel to or in the direction of the light rays incident on the individual structure 202, ie preferably parallel to the main propagation direction X of the optical fiber.

[0077] This ensures that these lateral surfaces do not influence the light rays hitting the recess, or influence them as little as possible.

[0078] Preferably, it is further provided that the base surface 2022 is curved, in particular into the light guide body 100. A surface normal to the base surface 2022 thus runs essentially parallel to the main light guide propagation direction X, wherein, for example, it is provided that the surface normal runs through the geometric center of the lateral surface and, in particular, runs normal to a tangential surface to the base surface at this center.

[0079] This curvature can (see Figure 7 ) a splitting / expanding effect on an incident light beam of parallel light rays S1 can be achieved, so that the light rays are evenly distributed over the light exit surface 161 and this shines evenly brightly.

[0080] In a further embodiment according to the Figure 9 - 13 , in which the basic relationships as in the case of the Figure 1discussed variant and are not repeated here, it can be provided that the depressions 202 are cylindrical in shape, at least in sections. This design of the depressions 202 is advantageous here, since in this variant the distinguished straight line g50 and the straight line g161 (see the explanations for the variant according to Figure 1 ) run parallel to each other ( Figure 9 ) and run transversely and perpendicularly to the main optical fiber propagation direction X. In this example, the straight lines g161, g162, g201 also run parallel to the distinguished straight line g50.

[0081] In this case, the recesses each represent a "cutout" in the light guide or in the total reflection surface, starting from the total reflection surface 201, with a lateral surface 2022 of the recess being formed in the form of a portion of a cylindrical surface. This lateral surface, or the height of the cylindrical surface, runs essentially vertically.

[0082] The incident light rays S1 are directed to the first light exit surface 161 via this lateral surface 2022. Preferably, the lateral surface is curved, in particular curved into the light guide body 100, so that, as in the embodiment according to Figure 1 the light rays S1 are "scattered" accordingly (splitting / expanding effect on an incident light beam of parallel light rays S1), so that the light exit surface 161 is subsequently illuminated more evenly.

[0083] The recess 202 is bounded by three further, preferably flat lateral surfaces 2023, 2024a, 2024b, which "open" into the opening of the recess. For example, these surfaces are two lateral lateral surfaces 2024a, 2024b and a bottom lateral surface 2023, which are preferably flat. These flat lateral surfaces 2023, 2024a, 2024b preferably extend parallel to the main radiation direction X.

[0084] In both embodiments, it is provided that each opening 2021 occupies an area, the so-called opening area, in the total reflection surface 201, wherein an opening area has an opening area AB,i, the total reflection surface 201 has a total area A ges, wherein A ges includes the sum of all opening areas, and the first light exit surface 161 has a first area A 1 and the second light exit surface (162) has a second area A 2, and wherein ∑ i A B , i / A ges − ∑ i A B , i / = A 1 / A 2

[0085] This general formula is valid under the assumption that the depressions, ie in particular the openings of the depressions, can be of different sizes. Preferably, it is provided that the depressions, in particular their openings, are of the same size, i.e. have the same opening area. If n depressions are provided, the above formula (AB is the area of ​​the opening area of ​​a depression) simplifies to n A B / A ges − n A B = A 1 / A 2

[0086] Assuming a flat total reflection surface, the opening surfaces lie in the plane of the total reflection surface. As described below, the total reflection surface can be faceted, i.e., divided into several, preferably flat, facets. In this case, the opening surfaces lie in the plane of the respective facet, from which the recess extends into the light guide body.

[0087] In the case of a faceted total reflection surface, the area A total can be calculated by the sum of the areas of the facets 201A, from which areas the depressions 202 extend into the light guide body 100.

[0088] The design according to the invention ensures that the light emitted by the light source(s) is divided according to the ratio of the size of the two light exit surfaces, so that both light exit surfaces are irradiated with the same light intensity and thus have the same luminance or surface brightness.

Claims

1. Signal light or illumination device (10) for a motor vehicle or for a motor vehicle headlight, comprising - at least one light source (50) for emitting light beams, - a light guide body (100) associated with the at least one light source (50), wherein the light guide body (100) comprises a coupling-in section (110) and a light exit section (160), wherein light beams emitted by the at least one light source (50) are transmitted via the coupling-in section (110) into the light guide body (100), are coupled into the light guide body (100) via the coupling-in section (110), propagate in the light guide body (100), and emerge from the light guide body (100) via the light exit section (160), wherein the light exit section (160) comprises two light exit surfaces (161, 162), wherein the coupling-in section (110) is arranged, e.g. in the form of a collimator (111), such that the light beams emitted by the at least one light source (50) are substantially aligned in a light guide main propagation direction (X), characterized in that the light guide body (100) comprises a beam splitting device (200), wherein the beam splitting device (200) comprises a total reflection surface (201) which totally reflects at least a part of the light beams (S1) impinging on it, so that these light beams (S3) propagate in the light guide body (100) in a direction (Z) deviating from the light guide main propagation direction (X), and wherein the total reflection surface (201) has individual optical structures (202), which are designed in such a way that at least some of the light rays (S1) incident on an individual structure (202) emerge from the light guide body (100) via the individual structure (202), re-enter the light guide body (100) via a re-entry surface (203), the re-entered light rays (S2) being directed to one of the light exit surfaces, the "first" light exit surface (161), which first light exit surface (161) lies opposite the re-entry surface (203), so that these light beams can emerge from the first light exit surface (161) in a main radiation direction (Y), and wherein the light beams (S3) totally reflected by the total reflection surface (201) are totally reflected at a rear side (101) of the light guide body (100) and thereby deflected to the second light exit surface (162), where the light beams (S5) emerge from the light guide body (100) in the direction of the main emission direction (Y), wherein each individual optical structure (202) is formed as a depression in the total reflection surface (201), wherein a depression, starting from an opening (2021) in the light guide body (100), is bounded by cladding surfaces (2022, 2023, 2024; 2022, 2023, 2024a, 2024b) extending into the light guide body (100), wherein one of the lateral surfaces, the so-called base surface (2022), is oriented such that light rays (S1) impinging on it pass through the base surface (2022) in the direction of the first light exit surface (161), and wherein each opening (2021) excludes a surface, the so-called aperture surface, in the total reflection surface (201), wherein an opening surface has an opening surface area AB,i, the total reflection surface (201) has a total surface area Ages, wherein Ages contains the sum of all opening surface areas, and the first light emission surface (161) has a first surface area A1 and the second light emission surface (162) has a second surface area A2, and wherein ∑ i A B , i / A ges − ∑ i A B , i / = A 1 / A 2 2. Device according to claim 1, wherein the further lateral surfaces (2023, 2024; 2023, 2024a, 2024b) are aligned substantially parallel to or in the direction of the light rays impinging on the individual structure (202).

3. Device according to claim 1 or 2, wherein the recesses (202) are pyramid-shaped, with a triangular opening (2021), base surface (2022) and two lateral surfaces (2023, 2024) extending into the light guide body (100).

4. Device according to claim 1 or 2, wherein the recesses (202) are cylindrical in shape, at least in sections.

5. Device according to one of claims 1 to 4, wherein the base surface (2022) is curved, in particular into the light guide body (100), wherein preferably the other lateral surfaces (2023, 2024; 2023, 2024a, 2024b) are flat, wherein for example the flat lateral surfaces (2023, 2024) extend parallel to the light guide main propagation direction (X).

6. Device according to one of the preceding claims, wherein the individual structures (202) are arranged uniformly and / or in rows and / or in columns distributed over the total reflection surface (201).

7. Device according to one of the preceding claims, wherein two or more light sources (50) are provided, wherein for one or more of the light sources (50) in each case the coupling section (110) is arranged in such a way, e.g. in the form of a collimator (111), such that the light beams emitted by each light source (50) are substantially aligned in the light guide main propagation direction (X), wherein preferably the light sources (50) are arranged in a row, in particular side by side and transversely to the light guide main propagation direction (X).

8. Device according to one of the preceding claims, wherein the light-emitting surfaces (161, 162) are directly adjacent to one another, in particular converge in a straight edge, and / or one light-emitting surface (161) is arranged above the other light-emitting surface (162).

9. Device according to one of claims 1 to 8, wherein, when the light-emitting surfaces (161, 162) are intersected by a horizontal surface, the resulting intersecting straight lines (g161, g162), assuming that the light-emitting surfaces (161, 162) are flat, are either parallel to a marked straight line (g161, g162), - either run parallel to a marked straight line (g50), or - run obliquely to the excellent straight line (g50), wherein the excellent straight line (g50) is a straight line which lies in a horizontal plane and runs perpendicular to the light guide main propagation direction (X).

10. Device according to claim 9, wherein a sectional straight line (g201), which results from a horizontal section through the total reflection surface (201), is either - parallel to the marked straight line (g50) or - oblique to the marked straight line (g50).

11. Device according to one of the preceding claims, wherein the first light emitting surface (161) is approximately at the same height as the one or more light sources (50), and / or wherein preferably the total reflection surface (201) is approximately at the same height as the at least one light source (50).

12. Device according to one of the preceding claims, wherein the total reflection surface (201) is divided into a plurality of facets (201A), wherein facets (201A) are laterally adjacent to each other, and wherein preferably the facets are each rotated at an angle greater than 0° and less than 90° with respect to the light guide main propagation direction (X).

13. Device according to one of the preceding claims, wherein the at least one light source (50) is designed as an LED or comprises at least one LED.

14. Motor vehicle headlamp comprising one or more devices according to any one of claims 1 to 13.

15. Motor vehicle comprising one or more devices according to any one of claims 1 to 13 and / or one or more motor vehicle headlights according to claim 14.