Light module for a lighting device of a vehicle, method for operating a light module, and method for producing a light module

Abstract

The invention relates to a light module (10) for a lighting device (2) of a vehicle (1), comprising at least one lighting means (26) and a plurality of light-guiding spatial regions (110, 120, 130) which are adjacent to one another and each extend in a main emission direction (L), wherein the light-guiding spatial regions (110, 120, 130) are each delimited in the main emission direction (L) at least in some regions by a light exit surface (114, 124, 134) and each have a light entry region (112, 122, 132) into which radiation emitted by the at least one lighting means (26) can be introduced such that the light exit surface (114, 124, 134) of the light-guiding spatial region (110, 120, 130) is at least partly in a preferably rectilinear beam path of the introduced radiation. According to the invention, the light module (10) has at least one shielding device (18; 42; 44) which is arranged between two adjacent light-guiding spatial regions (110, 120, 130) and is suitable and intended for shielding at least one of the two adjacent light-guiding spatial regions (110, 120, 130) at least partly from radiation emerging from the other of the two adjacent light-guiding spatial regions (110, 120, 130).

Description

[0001] Description

[0002] Light module for a vehicle lighting device, method for operating a light module and method for manufacturing a light module

[0003] The present invention relates to a light module for a lighting device of a vehicle, a method for operating a light module for a lighting device of a vehicle and a method for manufacturing a light module for a lighting device of a vehicle.

[0004] Vehicle lighting devices have been known for some time in the art. A vehicle lighting device typically fulfills at least one lighting function, such as a brake light function, and / or a general lighting function and / or a flashing function.

[0005] From US patent 2017 / 0136942 A1, a taillight device for an automobile is known, which has a plurality of light guide elements that are spaced apart from each other (in an upward and downward direction) and at least one connecting element that connects the light guide elements.

[0006] German patent DE 102006 059 980 A1 discloses a lighting unit for motor vehicles with three light guides, which are manufactured as angled transparent plates made of approximately plastic glass. Two of the two light guides each comprise flat legs that extend parallel to each other and lie flat against one another. Each of the two light guides comprises a further leg that is angled at the same angle to the corresponding leg. Since the two flat legs of each light guide run parallel to each other at a height difference, two bar-shaped light contours are formed at their end faces, which are visible from the outside as illuminated, flat, and parallel stripes.

[0007] The present invention is based on the objective of overcoming the disadvantages known from the prior art and providing a light module and a method for operating and manufacturing the light module, which can be manufactured in a resource-saving manner and produces an aesthetically pleasing effect on a user.

[0008] The object of the invention is achieved by the subject matter of the independent claims. Advantageous embodiments and further developments of the invention are the subject matter of the dependent claims.

[0009] The light module according to the invention for a lighting device of a vehicle has at least one light source and a plurality of adjacent light guide space areas extending (in particular each) in a main emission direction (of the lighting device and / or the light module).

[0010] The term "two adjacent" light-guiding space areas" means in particular that no optical element with a light-emitting surface is arranged between these two light-guiding space areas, which emits radiation via the light-emitting surface, especially in the direction of the main emission direction.

[0011] The light-guiding space areas are each limited at least partially in the main direction of emission by a (preferably separate) light-emitting surface and each has a light-entry area into which radiation emanating from (in particular generated by) the at least one light source can be introduced in such a way that the light-emitting surface of the light-guiding space area lies at least partially (preferably in its entirety or completely and / or across its entire surface) in a, preferably straight, beam path of the introduced radiation (and preferably propagating in the light-guiding space area, in particular propagating completely from the light-entry area into the light-guiding space area).

[0012] Preferably, the light entry area (preferably each one) is located in a region opposite the light exit surface of the respective light-guiding space (especially along the main emission direction) and is preferably arranged on the opposite side. Radiation propagating from the light entry area in the main emission direction thus reaches the light exit surface of the respective light-guiding space and exits the light-guiding space through this light exit surface. Preferably, the path of the radiation exiting and / or emerging from the light exit surface of the light-guiding space (originating from the at least one light source and entering and preferably introduced and / or coupled into the light-guiding space) runs in and, particularly preferably, (essentially) along the main emission direction.

[0013] The main emission direction can run along an optical axis of the light module. Preferably, the light-guiding spaces are aligned in the main emission direction. Preferably, the optical axes of the plurality of light-guiding spaces run parallel to the main emission direction and / or parallel to the optical axis of the light module. Particularly preferably, the light-guiding spaces extend (each) completely around the optical axis of the light module and are configured such that the optical axis of the light-guiding spaces lies on the optical axis of the light module.

[0014] Preferably, the light-guiding regions are (each) light guide bodies, which are particularly suitable and designed to guide the radiation emanating from the at least one light source and coupled into the light guide body to the light-emitting surface of the light guide body. In other words, in a preferred embodiment, light guide bodies form the light-guiding regions. The light guide bodies are in particular solid bodies and especially solid material bodies. The light guide bodies can in particular be optical fibers.

[0015] Preferably, the light guides have no cavities. Preferably, the light guides are made of a single material. Preferably, the light guides have a uniform material distribution throughout their entire body. Preferably, the light guide is (especially completely) transparent (to the light to be guided or to the light coupled into the light guide by the at least one light source).

[0016] Preferably, radiation coupled into the (respective) optical fiber propagates within the optical fiber in a substantially straight line and / or uniform manner (especially along a coupling direction).

[0017] In light-guiding chambers designed as light guides, the light-emitting surface is formed by a surface area of ​​the outer wall of the light guide. Preferably, the light-entry area is formed by a light-entry surface, which is another surface area of ​​the outer wall of the light guide. Preferably, the light-emitting surface and the light-entry surface are opposite each other. Preferably, the light-emitting surface and the light-entry surface are the same size and / or parallel to each other. Preferably, they are entirely opposite each other. The light guide, or all of the light guides, can, in particular, consist of and preferably are made of PMMA (polymethyl methacrylate), and are made of PMMA throughout and / or uniformly distributed.

[0018] The light guide body can comprise (exactly) one injection-molded part and preferably be (exactly) one injection-molded part, wherein an injection-molded part is a part produced in one (in particular a single) injection molding process and / or injection molding embossing process.

[0019] Additionally or alternatively, the light-guiding spaces can also be designed (at least partially and preferably in their entirety) as hollow bodies and / or as hollow chambers of a hollow body (comprising, for example, several cavities that are at least partially or completely separated from one another) or of several hollow bodies. In particular, the (respective) light-guiding spaces are bounded by at least one wall or walls within which there is an unfilled or hollow interior space (cavity) or at least an interior space not filled with the wall material. It is conceivable, for example, that there is a common wall between two light-guiding spaces, which separates the two cavities of the respective light-guiding spaces from each other. Thus, the common wall can bound one cavity of one light-guiding space and also the cavity of the adjacent light-guiding space.

[0020] The light emission surface of the light-guiding space area designed as a hollow body is (in each case) given by a wall of the hollow body (which limits the cavity, especially in the main direction of emission).

[0021] The light entry area can be located in an interior region of one, and preferably in each, light-guiding space (preferably designed as a hollow body). The at least one light source can thus be arranged within the cavity of the hollow body. Preferably, a circuit board or printed circuit board defines the cavity at least on one side and / or forms a wall (at least partially) of the hollow body. Preferably, the at least one light source is arranged on the side of the circuit board or printed circuit board facing the cavity and / or the side facing the light-emitting surface. Preferably, the at least one light source extends into the cavity.Preferably, the light-guiding space (especially designed as a hollow body, as preferably described above) can be configured such that the radiation emanating from and preferably generated by the at least one light source is introduced directly into an interior area and / or space of the light-guiding space and / or is not coupled into the light-guiding space through an outer surface of the light-guiding space. The light entry area can be located (for example, in the case of light-guiding spaces designed as hollow bodies) in the interior of the light-guiding space, i.e., in particular within the outer boundary walls of the light-guiding space.

[0022] Preferably, the wall thickness, and in particular its thickness, of the at least one wall or walls of the (respective) light guide body is uniform or (essentially) the same at least sectionally and preferably across the light guide body and / or at least along a circumferential direction (especially with regard to the main emission direction).

[0023] According to the invention, the light module has at least one shielding device arranged between two adjacent light-guiding space areas, which is suitable and intended to shield at least one of the two adjacent light-guiding space areas at least partially from radiation emanating from the other of the two adjacent light-guiding space areas.

[0024] In other words, a shielding device is provided which, in the case of two adjacent light-guiding space areas, at least partially and preferably (essentially completely) prevents radiation exiting one light-guiding space area of ​​the two adjacent light-guiding space areas from entering the other of the two adjacent light-guiding space areas and, in particular, from exiting from there via the light-exiting surface of the other of the two adjacent light-guiding space areas (especially in the main direction of emission).

[0025] This advantageously achieves a (preferably sharp) separation of the individual light-guiding space areas. This separation can be particularly advantageous when the light-guiding space areas are animated, i.e., when the radiation is emitted differently over time and / or with different spectral compositions from the individual light-guiding space areas (via their respective light-exit surfaces), because the shielding device prevents (preferably and preferably completely) the transmission of radiation introduced into one light-guiding space area into another or adjacent light-guiding space area.

[0026] Preferably, the shielding device is suitable and designed to at least partially shield each of the two adjacent light-guiding space areas from radiation emanating from the other of the two light-guiding space areas. By at least partially shielding the (visually visible) radiation emanating from the respective light-guiding space area, a reduction in the luminous intensity and / or luminous flux and / or amount of light by at least 50%, preferably by at least 70%, preferably by at least 80%, and particularly preferably by at least 90% can be achieved with respect to the proportion of this (visually visible) radiation penetrating into the adjacent light-guiding space area.

[0027] The term “two adjacent” light-guiding space areas can preferably be understood to mean that, with the exception of the shielding device, no optical and / or optically effective element is arranged between the two light-guiding space areas.

[0028] Preferably, each of the multiple light-guiding spaces, and / or at least one of the multiple light-guiding spaces, is suitable and designed for emitting light in a spatially effective manner towards an observer (of the light module and preferably the lighting device) from the radiation introduced into the respective light-guiding space. The observer preferably views the light module or the lighting device or the respective light-guiding space (essentially) opposite to the main direction of emission. In particular, each of the multiple light-guiding spaces is suitable and designed for emitting radiation in a spatially effective manner towards an observer (of the light module and preferably the lighting device), preferably emitted via the light-emitting surface. This offers the advantage that a 3D effect can be achieved as a design element.

[0029] Spatially effective light emission is understood to mean, in particular, that the radiation does not appear (exclusively) as if emitted or generated by a purely two-dimensional (planar) luminous surface or illuminated light-emitting surface, but rather that for an observer (of the light module and preferably the lighting device), a depth of the light-guiding spatial regions (and not only the light-emitting surface as a luminous and / or illuminated area) is optically perceptible. In other words, spatially effective light emission is preferably understood to mean that an optical spatial luminous effect of a three-dimensional volume is achieved for an observer.

[0030] The 3D effect, or the depth visually perceptible to the viewer, is preferably generated by means of a beam path (preferably a plurality of beam paths) which extends from the light entry area of ​​a light-guiding space over at least one side wall area, in particular a cladding area, of the light-guiding space (towards the viewer), wherein the beam path particularly preferably does not pass through the light-emission surface of the light-guiding space. This advantageously results, together with the beam path(s) which extends from the light entry area through the light-emission surface (and in particular, exits the light-guiding space for the first time from the light entry area through the light-emission surface) (and reaches the viewer), and which forms a homogeneously luminous and / or homogeneously illuminated light-emission surface, in a 3D effect.

[0031] Preferably, the at least one light source (starting from the light entry area) illuminates not only the light-emitting surface (directly, i.e., without prior scattering and / or reflection at a side wall area and / or at an (outer) wall area of ​​the light-guiding space that differs from the light-emitting surface), but also a side wall area and / or (outer) wall area (e.g., a sheath area) of the light-guiding space, or is suitable and designed for this purpose. The illuminated side wall area and / or (outer) wall area (e.g., a sheath area) of the light-guiding space is optically perceptible to the observer (preferably through / via the light-emitting surface), creating a spatial optical effect for the observer.

[0032] When the lighting device or light module is installed in the vehicle, the observer can preferably not only recognize and visually perceive the illuminated light-emitting surfaces (as such) of the multiple light-guiding areas, but also at least one further illuminated surface (by the at least one light source) of the multiple light-guiding areas. This at least one further illuminated (side) surface is oriented relative to the illuminated light-emitting surfaces in such a way that the depth of the light module is visually perceptible (to an observer) through this at least one illuminated (side and / or circumferential) surface and / or the depth effect is enhanced. Preferably, the at least one further illuminated (side) surface adjoins the light-emitting surface.

[0033] Preferably, at least one illuminated (side and / or lateral surface) and preferably several illuminated (side and / or lateral surfaces (in addition to the respective light emission surfaces) are optically perceptible to an observer in such a way that, through the relative orientation of the (side and / or lateral) surface(s) to the respective orientation of the light emission surface of the respective light guiding space (in addition to a width and a height of the light emission surface or of the light guiding space), a depth of the respective light guiding space is perceptible or a depth effect of the light guiding space is enhanced.

[0034] The side and / or lateral surfaces are, in particular, (at least) one boundary surface of the light-guiding space. Thus, the side and / or lateral surfaces could be outer surfaces and / or (side and / or lateral) boundary surfaces and / or sidewall surfaces (or one or more of these) of the light-guiding space, whose main direction of extension preferably runs in the main emission direction and / or in the direction of extension of an optical axis of the light-guiding space and / or the light module, and which particularly preferably extend (essentially) perpendicular to the light-emission surface. Preferably, the side and / or lateral surface extends from the light-intake area, preferably the light-intake surface, to the light-emission surface of the light-guiding space.Preferably, the side and / or lateral surfaces extend (preferably completely) in the circumferential direction (around the main direction of extension and / or) around the optical axis of the light guide module and / or the respective light guide space area.

[0035] Preferably, the side and / or lateral surface of a light-guiding space area designed as a light guide body is an outer surface of the light guide body.

[0036] Preferably, the side and / or lateral surface of a light-guiding space area designed as a hollow body is an inner surface of a wall of the hollow body, i.e., a surface of a wall facing the cavity. An outer surface of the wall of the hollow body can also serve as the side and / or lateral surface of a light-guiding space area designed as a hollow body with the function described above. Preferably, at least one, preferably at least two (all would also be conceivable) light-guiding space area(s) is / are designed such that not only their illuminated (frontal or the light-guiding space area in the main emission direction, towards the side of the external environment, etc.)The light emission surfaces (which are delimited towards the viewer) are not visually perceptible (by the viewer) as uniformly (homogeneously) illuminated and / or homogeneously luminous light emission surfaces, but rather that the side and / or lateral surfaces (as described above) of the light guide space area illuminated (by at least one light source) are at least partially (visually) perceptible, so that a 3D effect is created.

[0037] Preferably, the partially illuminated and / or luminous side and / or lateral surfaces are not visually perceptible to the viewer through the light emission surface (which delimits the frontal or light-guiding space area in the main direction of emission, towards the side of the external environment or towards the viewer) (but only via beam paths running from the outer surface of the side and / or lateral surface, which do not reach the viewer or the external environment via the light emission surface of the light-guiding space areas).

[0038] Preferably, the light source emitting radiation to at least one light-guiding space area, and preferably also to all light-guiding space areas, is not visually perceptible, or at least not directly (but at most diffusely).

[0039] The depth effect is preferably not achieved by looking into the light-emitting surface (the end face or the area of ​​the light guide in the main direction of emission, bordering the surroundings or the viewer). On the contrary, the light-emitting surface (the end face or the area of ​​the light guide in the main direction of emission, bordering the surroundings or the viewer) is preferably structured so that one cannot see into the light guide or, in particular, the light guide itself. The depth effect is preferably achieved by looking into the outer surfaces and / or by a viewer looking at the outer surfaces. In other words, it is preferably achieved that the individual light guide areas are visible through their end faces or the area of ​​the light guide in the main direction of emission, bordering the surroundings or the viewer.Light-emitting surfaces (which are defined towards the viewer) emit light homogeneously, but do not appear to the viewer like a transparent glass body into which one can see, whereby the multitude of light-guiding spatial areas preferably create a 3D effect in their entirety. In particular, the spatially perceived light emission does not correspond to the light emission emitted or emanating from a purely two-dimensional or flat illuminating surface.

[0040] Preferably, the light-emitting surface is arranged relative to the light-intake area (especially preferably the light-intake surface) such that the light-emitting surface lies at least partially and preferably entirely (or its entire area) within a straight beam path of radiation introduced into the light-intake area (especially preferably via the light-intake surface). The fact that the light-emitting surface is accessible via a straight beam path of radiation introduced or coupled into the light-intake area or into the light-intake surface means, in particular, that the light-emitting surface is accessible via a direct beam path, i.e., without reflection and / or scattering at interfaces (of a light-guiding space). In addition, the light-emitting surface is preferably also accessible by beam paths that are subject to (total) reflection at the interfaces (of a light-guiding space).A smaller installation space can be achieved through a geometry that allows straight beam paths between the introduced radiation and the light-emitting surface.

[0041] Preferred embodiments of the light module and / or individual light-guiding areas and / or the plurality of light-guiding areas are described below with respect to a cross-sectional plane through the light module and / or the individual light-guiding areas and / or the plurality of light-guiding areas. This cross-sectional plane extends in the main emission direction and / or along the optical axis of the light module and / or along the optical axis of the (respective) light-guiding area and / or the plurality of light-guiding areas. In an installed state of the light module or the lighting device in the vehicle, the main emission direction and / or the optical axis of the light module and / or the light-guiding areas preferably extends along the longitudinal axis of the vehicle.

[0042] Furthermore, the cross-sectional plane preferably extends in a vertical direction, wherein the vertical direction is a direction with respect to an installation state of the light module and / or the lighting device and / or the light-guiding space areas in the vehicle, i.e., in particular a vertical direction in the coordinate system of the vehicle or a direction along the vertical axis of the vehicle. However, it is also conceivable that the cross-sectional plane is arranged in a plane which forms an angle with the vertical axis that is less than 30°, preferably 20°, more preferably 10°, and particularly preferably 5°.

[0043] Alternatively or additionally, it is also conceivable that the light module and / or one (or more) light-guiding space areas are preferably configured according to an embodiment described below, in which the cross-sectional plane (in addition to extending along the main emission direction and / or optical axis) extends in a (further) horizontal direction or, with respect to the installation state (of the light module and / or the lighting device and / or the light-guiding space areas) in the vehicle, in a transverse direction (of the vehicle). It is also conceivable that the cross-sectional plane is arranged in a plane that forms an angle with the transverse direction of less than 30°, preferably 20°, preferably 10°, and particularly preferably 5°.

[0044] Preferably, the light-guiding spatial regions in a cross-sectional plane (arranged as described above) are neither angled nor curved. At least, the light-guiding spatial regions in the cross-sectional plane are not angled and / or curved in such a way that there is no path for the radiation introduced into the light-inlet region and extending from there towards the light-outlet surface that is straight or direct to the light-outlet surface, i.e., without scattering and / or reflection at an interface (and / or side and / or lateral surface) of the light-guiding spatial region.

[0045] Preferably, at least one boundary and / or side and / or lateral surface, and preferably at least two boundary surfaces and / or side and / or lateral surfaces of the light-guiding space regions, extend (essentially) in a straight line in the cross-sectional plane and are particularly preferably parallel to the main emission direction. Preferably, the cross-sectional lines resulting from a cross-section through the boundary and / or side and / or lateral surface of the light-guiding space regions along a cross-sectional plane (as described above) are parallel to each other.

[0046] Preferably, the light-guiding spaces are designed such that the light-guiding spaces and / or the outer surface and / or (outer) boundary surfaces and / or (boundary) walls and / or interfaces of the light-guiding spaces in the cross-sectional plane (per light-guiding space) form at least one cross-sectional contour which is elongated and / or rectangular and / or rectangular in shape. Preferably, they form (per light-guiding space) at least, and particularly preferably exactly, two (preferably identical and / or mutually axially symmetrical) cross-sectional contours, each of which is elongated and / or rectangular and / or rectangular in shape.

[0047] Two (elongated and / or rectangular and / or rectangular) cross-sectional contours result (for each light-guiding space area) particularly when the light-guiding space areas extend (fully) circumferentially around an optical axis and / or around an axis extending along the main emission direction. This can occur with a hollow cylindrical design of the light-guiding space areas. In other words, a light-guiding space area, and preferably each light-guiding space area, can be designed as a tall circular ring disk or a thick-walled tube segment, or in the form of a tall circular ring disk. Alternatively, a light-guiding space area, and preferably each light-guiding space area, can be designed in the form of an oval ring disk, or in the form of an oval ring disk, in which the end face (bounding the light-guiding space area in the main emission direction) is not formed by a circular ring but by an oval ring.

[0048] It is also conceivable that the front face or the light emission surface of the (respective) light-guiding room areas has a rectangular and / or rectangular outer and / or inner contour (preferably with rounded corners).

[0049] For example, a light-guiding space could be designed in the form of a (particularly short) thick-walled rectangular and / or round and / or oval tube. Preferably, the light-guiding spaces of the plurality of light-guiding spaces have the same shape (with different dimensions). Particularly preferably, the light-guiding spaces of the plurality of light-guiding spaces have the shape of a (particularly short) thick-walled rectangular and / or round and / or oval tube with the same wall thickness. The central axis or hollow cylinder axes of the rectangular and / or round and / or oval tubes preferably extend along the main emission direction and / or along the optical axes of the light module and / or the respective light-guiding spaces.

[0050] Preferably, all central axes of the multitude of light-guiding spatial areas lie on a common straight line.

[0051] Preferably, the light-guiding space sections are interlockable, especially in such a way that the distance between two adjacent light-guiding space sections is (essentially) entirely the same. This offers the advantage that the same optical conditions are always achieved due to the consistent spacing. However, it is also conceivable that the consistent spacing is interrupted at the location of spacers, but otherwise remains constant.

[0052] Preferably, at least one light-guiding space area and preferably each light-guiding space area of ​​the plurality of light-guiding space areas is designed to be axially symmetric to a (above-described) cross-sectional plane.

[0053] Preferably, the plurality of light-guiding spaces comprises at least two, preferably at least three, preferably at least four, preferably at least five, and particularly preferably more than five (preferably nested and / or slid into one another and / or staggered) light-guiding spaces. Preferably, the plurality of light-guiding spaces are nested and / or slid into one another.

[0054] A greater number of light-guiding spaces allows for the display of animations with finer subdivisions. Preferably, a light-guiding space is completely surrounded by the next outermost light-guiding space in a radial direction (considered with respect to an optical axis of the light module and / or the light-guiding space). Preferably, the light module, and in particular the plurality of light-guiding spaces, is designed and configured such that, upon activation, the respective radiation (introduced into the light entry area) is coupled out at the end faces of each light-guiding space.

[0055] Preferably, the exit surfaces of the light-guiding space areas, which are preferably the respective end faces of the respective light-guiding space area, are a scattering surface. The surface can be designed as a rough surface and / or have optical structures and / or a surface texture and / or surface profiling. By providing optical structures, a light distribution corresponding to the requirements of a taillight can advantageously be achieved. Preferably, the exit surface has a uniform surface texture, so that homogeneous and uniform light emission is enabled. Preferably, the exit surface lies (essentially) in a plane.

[0056] Preferably, the cladding surfaces are structured. It is also conceivable that the cladding surfaces of the optical fibers or light guides are smooth in combination with diffuse coupling structures (of the optical fibers). In an advantageous embodiment, the plurality of light-guiding spatial regions is suitable and designed and / or configured to perform or implement (at least) one common lighting function. This common lighting function can be implemented (preferably exclusively) by means of all light-guiding spatial regions of the plurality of light-guiding spatial regions.

[0057] The combined lighting function is preferably triggered by the same activation command (from a driver assistance system and / or a vehicle user). Preferably, this (in particular, exactly one) activation command triggers (automatically) the activation (not necessarily simultaneously, but preferably staggered) of the light-guiding areas involved in implementing this lighting function. Activation of the light-guiding areas is understood to mean the introduction of radiation into the input area of ​​the light-guiding area (by means of the at least one light source) and the emission (at least a portion of) the radiation via its light-emitting surface.

[0058] Preferably, at least two light-guiding room areas and particularly preferably at least three light-guiding room areas are involved in the implementation of the common lighting function.

[0059] It is conceivable that more than three, for example four, five or even ten light-guiding room areas are involved in the implementation of the common lighting function.

[0060] The shared lighting function can be an animation, which in particular represents a lighting sequence through a (especially fixed) predetermined sequence of dimming up and / or dimming and / or switching on and / or off of the light sources assigned to the various light-guiding areas of the room. Various lighting sequences can be predefined, which can be assigned to different driving scenarios, such as a leaving-home sequence, a coming-home sequence, a goodbye sequence, an afterglow sequence, a bedtime sequence, a locking sequence, and / or an unlocking sequence.

[0061] The proposed light module is particularly well-suited for implementing animation lighting functions because it prevents (noticeable) sympathetic glow from a switched-off or dimmed light guide area in conjunction with an adjacent light guide area illuminated by at least one light source. This is achieved by shielding the light emanating from the illuminated light guide area towards the switched-off or dimmed light guide area. This advantageously creates a particularly high contrast and a particularly impressive visual effect for the viewer.

[0062] Preferably, the animation is implemented in such a way that the animation sequence proceeds from the inside out, i.e., the innermost light-guiding space area is activated first (i.e., illuminated and / or radiation coupled in) by the multitude of light-guiding space areas, and the outermost light-guiding space area is activated last.

[0063] The predefined lighting design or animation can be user-defined.

[0064] In addition, the multitude of light-guiding spatial areas can also be used to represent other time-varying light functions, in which the light-guiding spatial areas are not illuminated in the same way, or radiation is introduced, at least temporarily.

[0065] The multitude of light guide areas can thus be used to implement a repeating flashing light function, for example for the direction indicator, in which individual light guide areas are activated to emit radiation via the light exit surface or to illuminate in different sequences.

[0066] The (common) lighting function (of the light guide areas) can be selected from a group of lighting functions, depending on the design of the lighting device (e.g., as a rear light and / or headlight and / or as a signal light such as a brake light, side marker light, direction indicator light and / or (in the case of a lighting device designed as a headlight) as a daytime running light), which includes a repeating flashing light function, for example, for indicating the direction of travel, a brake light function to indicate braking activity, a position light function, such as a rear light function, to ensure the visibility of the vehicle during the day and / or night, and the like, as well as combinations thereof.

[0067] In addition, the light module can, preferably using the multitude of light guide areas, implement a combination of rear light (tail light) and flashing light function.

[0068] Furthermore, a braking function could also be implemented by dimming up some and / or multiple light-guiding areas. It is also conceivable that the multiple light-guiding areas (at least partially, and preferably all of them) could be used to increase the area of ​​the light output surface of a lighting function. For example, the multiple light-guiding areas could be arranged near and / or adjacent to another lighting device (luminaire) that is suitable and intended for implementing a given lighting function and has a light output surface for this purpose. Preferably, the multiple light-guiding areas (particularly individual light-guiding areas and / or several light-guiding areas, and especially preferably all of them) could be used to increase the light output surface of the other lighting device.

[0069] For this purpose, when the additional lighting device is activated to implement the lighting function (preferably simultaneously), at least one light source can be activated to introduce radiation into at least one light guide area and preferably into several (or all) light guide areas and thus to emit radiation via the light emission surface(s) of the light guide area(s).

[0070] The additional lighting equipment is preferably a lighting equipment for implementing a bright or intense lighting function (compared to the individual light-guiding room areas).

[0071] The additional lighting device could be a brake light and / or a reversing light. This additional lighting device can be a (particularly fixed, i.e., not removable without damage) component of the light module. The light output surface of the additional lighting device can essentially be a circular and / or an oval and / or a rectangular and / or rectangular surface.

[0072] In a preferred embodiment, the additional lighting device is arranged centrally with respect to the plurality of light-guiding areas. The light-guiding areas and / or their light-emitting surfaces preferably surround the additional lighting device. Preferably, the light-guiding areas and / or their light-emitting surfaces are located further away from an optical axis and / or a central axis of the light module and / or the light-guiding areas, which extends along the main emission direction, than the additional lighting device.

[0073] In addition, the light module can comprise at least one (second) further lighting device, which, for example, is part of the same assembly (like the further lighting device) and which is preferably supplied with electrical energy from (exactly) one common circuit board and / or a flexible semiconductor power supply strip of the light module. The (second) further lighting device can be arranged outside all light-guiding areas.

[0074] Preferably, the plurality of light-guiding spatial regions (viewed radially outwards, i.e., from an optical axis of the light-guiding spatial regions) are surrounded by an aperture (preferably completely). Preferably, the (second) additional illumination device is arranged outside the aperture and / or on the opposite side of the aperture compared to the plurality of light-guiding spatial regions.

[0075] Preferably, the (second) further lighting device can be located further away from an optical axis of the light-guiding space areas and / or the central axis of the light-guiding space areas than the light-guiding space areas and therefore be arranged further outwards with respect to this axis.

[0076] The second additional lighting device may be a (thick-walled) optic for a lighting function different from the lighting function of the light-guiding room areas, for example a flashing light.

[0077] It is also conceivable that the additional lighting device is part of a component unit that does not include the light module and which is preferably arranged in an installation state in the vehicle next to the light module and particularly preferably next to at least one light guide space area.

[0078] In a preferred embodiment, the shielding device is a coating, preferably a PVD coating (PVD stands for Physical Vapor Deposition), of at least one light-guiding space, in particular an outer surface of a light-guiding space (preferably a light guide body). Preferably, the shielding device is a PVD coating of an outer surface of a light-guiding space (for example, a light guide body), wherein the outer surface (in the assembled or finished state of the light module) faces an adjacent light guide body.

[0079] A coating, especially a PVD coating, offers the advantage of a very thin layer. This allows for the elimination of a plastic layer, which typically has a thickness of 1.2–1.5 mm (up to 15 mm). This, in turn, significantly reduces the required installation space.

[0080] The layer thickness is preferably chosen such that the coating is opaque.

[0081] Preferably, the (PVD) coating has a layer thickness of at most 250 nm, more preferably at most 200 nm, more preferably at most 100 nm, and most preferably at most 75 nm. Additionally or alternatively, the (PVD) coating preferably has a layer thickness of at least 40 nm, more preferably at least 50 nm, and most preferably at least 100 nm. However, layer thicknesses down to several micrometers are also conceivable, i.e., layer thicknesses greater than 500 nm and at most 10 pm, most preferably at most 5 pm.

[0082] Preferred coating materials include, in particular, reflective and / or opaque materials. Preferably, the coating material is a metal or contains a metal or metals. In the PVD coating process, metallic materials (which can be deposited, in particular, via the gas phase) and / or a metal (carbon would also be conceivable), especially preferably in a very pure form, are deposited.

[0083] This offers the advantage that, if the geometric extent of the light-guiding space areas (preferably light guide bodies) increases towards the outer light guide bodies when viewed in the main emission direction, the PVD coating is only applied to the overlapping area of ​​the two adjacent light-guiding space areas (as seen in the main emission direction). This allows for very precise coating even with complex geometries and achieves a very uniform coating.

[0084] It is also conceivable that an inner surface of a light-guiding space area (preferably a light guide body), which (in the assembled or finished state of the light module) faces an adjacent light-guiding space area (preferably a light guide body), has a PVD coating.

[0085] The (PVD) coating offers comparatively very good shielding between the optical fibers and thus very good animability. Furthermore, it allows for the representation of the "glass body" optics. Preferably, an arrangement / combination of several nested optical fibers (preferably with end-face coupling) can be produced in a first process step by manufacturing a first optical fiber, for example, in a (preferably 1K) injection molding process. Preferably, the outer surface of the first optical fiber is PVD coated. The first optical fiber is then preferably overmolded with a second optical fiber. The outer surface of the second optical fiber is then preferably PVD coated. Finally, the first and second optical fibers are preferably overmolded with the third optical fiber.Preferably, a (preferred) aperture is manufactured in a separate manufacturing step (e.g., in a (preferably 1K) injection molding process). The arrangement / combination is preferably achieved by joining the aperture with the light guides.

[0086] In a further advantageous embodiment, the shielding device comprises at least one spacer element which is suitable and designed to space two adjacent light-guiding space areas apart from each other, at least partially (and preferably completely and / or along the entire extent in the main emission direction). Preferably, the at least one spacer element ensures that an equidistant distance is formed between the two adjacent light-guiding space areas. This advantageously creates an air gap between the two light-guiding space areas, through which (mutual) shielding of radiation emanating from one of the two light-guiding space areas towards the other light-guiding space area is effected.

[0087] The shielding effect of the air gap is based in particular on the two interfaces between the two media created by the air gap, at which light refraction occurs. When rays strike an interface between two media, they are at least partially reflected. Thus, at each of the interfaces formed by the air gap with the light-guiding areas (preferably light guides), a portion of the radiation is reflected and therefore does not penetrate into the adjacent light-guiding area (preferably light guides). This significantly reduces any collateral glow between a non-activated light-guiding area (preferably light guides) and an adjacent activated light-guiding area (preferably light guides).

[0088] Preferably, a (geometric) projection is formed and / or formed on a light guide body as a spacer element, which projects towards the adjacent light guide body. Preferably, the two light guide bodies are arranged such that they contact (only) at the projection or at the spacer element.

[0089] It is conceivable that the adjacent light guide body has a recess corresponding to the shape, into which the shape can engage.

[0090] Preferably, the spacer element extends completely (i.e., in the circumferential direction with respect to the optical axis and / or central axis of the light module and / or the light guide body). The spacer element can therefore have an annular and / or circular shape and run in a ring-like fashion along the light guide body.

[0091] The shape can have a rectangular and / or rectangular cross-sectional area and / or a triangular cross-sectional area in cross-section (for example, in the cross-sectional plane described above).

[0092] Preferably, the spacer element is manufactured together with the light guide, preferably using an injection molding process (particularly preferably a one-component injection molding process). This offers the advantage that no additional component needs to be manufactured and assembly can be achieved with fewer parts. Furthermore, this allows for easy and quick assembly of the individual components.

[0093] In the preferred manufacturing process for multiple nested optical fibers with end-face coupling, only the individual optical fibers need to be produced in a single manufacturing step, for example, using a one-component injection molding process (possibly with an integrated spacer). An aperture that completely surrounds the outermost optical fiber on its outer surface can also be produced using a one-component injection molding process. The optical fibers can then be nested, and the optical fibers and the aperture joined.

[0094] Because both the optical fibers (preferably with a partially integrated spacer element) and the aperture are preferably injection-molded (especially 1K) parts, rapid production of the individual components and a fast joining process for the optical fibers and the aperture are possible. Preferably, at least one spacer element is integrally molded onto at least one surface of all but one optical fiber. However, it is also conceivable that at least one spacer element is integrally molded onto both an inner and an outer surface of an optical fiber, each creating an air gap between that optical fiber and two adjacent optical fibers.

[0095] The spacers advantageously create an air gap between the outer surfaces of the optical fibers for shielding purposes. This air gap between the outer surfaces serves as a shielding device.

[0096] Preferably, the at least one spacer element is arranged at an end section of the optical fiber with respect to the main emission direction. Thus, the at least one spacer element can be arranged at the end section of the optical fiber opposite the emission surface. Alternatively or additionally, it is also conceivable that the at least one spacer element is arranged at the end section of the optical fiber facing the side of the emission surface.

[0097] Preferably, exactly one spacer element is arranged between two light guide bodies or light guide spatial areas. It is also conceivable that two or more spacers are provided.

[0098] In an alternative or additional embodiment, the shielding device is a particularly preferably deep-drawn, opaque component (also referred to as a separator). In particular, the (deep-drawn) opaque component is a film or a film-like element. Preferably, the component has a layer thickness (film thickness) of less than 100 pm, more preferably less than 80 pm.

[0099] A film or film-like element used as a shielding device offers the advantage of a very thin layer. This also allows for the elimination of a layer of, for example, plastic, which typically has a thickness of 1.2–1.5 mm (up to 15 mm). This results in a significant reduction in the required installation space.

[0100] The opaque component is preferably selected from a group of opaque components comprising a white opaque film, a metallized film, a black or dark gray film, a black or dark gray film with subsequently applied metallization, and the like, as well as combinations thereof. Here, the optical fibers and the separators to be arranged between the optical fibers can preferably be manufactured individually, i.e., as separate components. The optical fibers can preferably be manufactured (each) as an injection-molded part (in a single, approximately one-component, injection molding process). The separators are preferably manufactured by deep drawing. Furthermore, a baffle that completely surrounds the outermost optical fiber on its outer surface in the assembled state is preferably manufactured by a one-component injection molding process.Then the light guide elements can be pushed together and the light guides, separators and aperture can be joined.

[0101] Particularly preferred is a combination of several nested and / or staggered light guide bodies (preferably with end-face coupling) with a deep-drawn opaque component (separator) in between, which is used in the light module.

[0102] In an alternative or additional embodiment, the shielding device is an opaque component (also referred to as a 2K injection molding separator), preferably one of several components of a multi-component injection molded part produced using a multi-component injection molding process. Preferably, the multi-component injection molding process is a 2K injection molding process (two-component injection molding process). For example, the shielding device can be one of two components, and preferably the second component, of a 2K injection molded part.

[0103] Preferably, another component of the multi-component injection-molded part (preferably the 2K injection-molded part) can be a light guide or optical fiber. Preferably, in the production of the multi-component injection-molded part, the (plastic) material for the light guide (optical fiber) is injected first, and in a subsequent step, the material for the shielding element or the second component or the 2K injection-molded separator is injected.

[0104] Preferably, the shielding device or the 2K injection-molded separator is selected from a group of components comprising a white opaque component, a black opaque component, a gray opaque component, and the like, as well as combinations thereof. Preferably, a second multi-component injection-molded part (preferably a 2K injection-molded part) is produced, which forms a second light guide and another shielding device (as a 2K injection-molded separator).

[0105] Preferably, several (preferably at least three and particularly preferably exactly three) optical fibers, at least two of which are such multi-component injection-molded parts, are nested together in such a way that the shielding device or the 2K injection-molded separators each form components located between two adjacent optical fibers. Preferably, the optical fibers are designed and / or arranged in the light module such that end-face coupling occurs in each case. Preferably, the light module consists of the optical fibers, an optical pre-scattering optic, and preferably an aperture.

[0106] Preferably, a volume diffuser is provided in the light module, which preferably (analogous to the aperture described above) completely surrounds the (preferably all) light guide elements. Such a volume diffuser (which is particularly located on the outside) offers the advantage that a solid-body view can be achieved. Preferably, the volume diffuser comprises (and particularly preferably consists of) a volume-diffusing (plastic) material, such as DF or DF23.

[0107] Volume-scattering material has, in particular, preferably homogeneously distributed, scattering particles in a material.

[0108] The volume diffuser can be a separate component manufactured using a process independent of the optical fibers and preferably not a component of a multi-component injection-molded part. Thus, the volume diffuser can be a single-component injection-molded part. The aperture can be spaced (particularly equidistantly) from the adjacent optical fiber and preferably does not touch it.

[0109] Alternatively, the volume scatterer can be a (preferably second) component of a multi-component injection-molded part (preferably a two-component injection-molded part). Preferably, the volume scatterer is a DF material component (especially as the second component), for example, made of DF or DF23 material. Preferably, another (e.g., first) component of the multi-component injection-molded part is a light guide. Preferably, this is the outermost light guide. Preferably, the component acting as a volume scatterer is arranged / injected on the outside (especially on the (outer) side of the light guide facing away from an optical axis of the light guide and / or the light module and / or the central axis of the light module).This advantageously results in the volume diffuser facing the external environment with respect to the light module and being at least partially, and preferably completely, perceptible to an observer. Preferably, at least a portion of the radiation scattered by the volume diffuser is visually perceptible to the observer. This advantageously creates a three-dimensional view.

[0110] Preferably, in a preferred embodiment of the light module, all shielding devices are of the same type, such as PVD coatings or the same type of opaque components. It is also possible to use different types of shielding devices within a single light module.

[0111] In a further advantageous embodiment, the multitude of light-guiding spaces is formed by a hollow body. This preferably has several hollow chambers, which in particular form the individual light-guiding spaces.

[0112] Preferably, at least one wall of the hollow body, which borders a hollow chamber and faces an adjacent hollow chamber, is designed as a shielding device. For example, the wall can be made of (opaque) light-impermeable and / or white, light and / or light gray plastic, or have such a material, so that surface reflection at this wall shields the adjacent light-guiding space (hollow chamber or cavity) from the penetration of radiation from the hollow chamber (light-guiding space) located on the other side of the wall.

[0113] Preferably, the wall of the hollow body, serving as a shielding element, simultaneously delimits two adjacent hollow chambers, at least partially. In this embodiment, two adjacent light-guiding spaces are therefore not spaced apart. Preferably, all light-guiding spaces are not spaced apart from each other (and share an intermediate wall (as a cladding surface) that separates the two light-guiding spaces). Preferably, all cladding surfaces of the hollow chambers, i.e., both an inner and an outer cladding surface, are designed, at least partially, as a shielding element. Preferably, the cladding surfaces designed as shielding elements extend from a rear side of the respective hollow chamber in the main emission direction.The respective shielding device has an extent measured in the main emission direction which exceeds at least 50%, preferably at least 60%, preferably at least 80% of the (also measured in the main emission direction) geometric extent of the lateral surface or boundary surface of the corresponding light-guiding space area.

[0114] Shielding devices, which are arranged between two light-guiding space areas and which preferably form at least a partial intermediate wall between the two light-guiding space areas and / or at least a partial cladding and / or boundary surface of the two light-guiding space areas, preferably extend over the entire (in the main direction of emission) geometric longitudinal extent of the (in the main direction of emission) smaller light-guiding space area of ​​the two adjacent light-guiding space areas and / or preferably extend over the entire (in the main direction of emission) geometric longitudinal extent of the (in the main direction of emission) overlapping area between the two adjacent light-guiding space areas.

[0115] Preferably, the outer surface of the outermost light-guiding chamber is also designed, at least in sections, as a shielding element. This offers the advantage that radiation striking this shielding element is reflected back into the cavity, thus contributing to a higher luminous intensity. Preferably, this shielding element extends over at least 40%, preferably at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90%, and particularly preferably at least 95% of the longitudinal extent of the outermost light-guiding chamber. This allows for the highest possible reflection rate of the radiation reaching the outer surface.

[0116] Preferably, this shielding device extends only over a maximum of 95%, more preferably 90%, more preferably 80%, more preferably 60%, and most preferably 50% of the longitudinal extent of the outermost light-guiding space. This offers the advantage that the remaining part of the outermost surface can be formed by a transparent material (e.g., colored, such as red) and / or by a volume-scattering (plastic) material, such as DF23. These (remaining) parts of the outermost surface can have a brilliant surface, e.g., micro-optics, and / or a scattering surface / appearance. Preferably, these parts of the outermost surface of the outermost light-guiding space that are not designed as a shielding device are arranged on the side of the surface facing the end face or light-emitting surface of the outermost light-guiding space and / or adjacent to the light-emitting surface.This offers the advantage that the three-dimensional structure / shape of the light-guiding spatial areas are visually perceptible.

[0117] Preferably, the exit surfaces of the light-guiding space areas, which are preferably the end faces of the light-guiding space areas, are made of transparent (e.g., also colored, such as red) and / or a volume-scattering (plastic) material, such as DF23. The end faces and / or the exit surfaces can have a brilliant surface, e.g., micro-optics, and / or a scattering surface / appearance.

[0118] Preferably, the exit surfaces of the light-guiding areas, which are preferably the end faces of the light-guiding areas, have a textured or roller-like structure. This allows for a high degree of homogeneity in the radiation emerging from the exit surfaces. Preferably, the tool used to manufacture or (primarily) form the light-guiding areas, preferably by injection molding, has a corresponding roller-like structure and / or texture.

[0119] Preferably, the inner surface of the innermost light-guiding chamber, which faces away from the other light-guiding chambers, is also designed, at least partially, as a shielding device. This offers the advantage that radiation striking this shielding device is reflected back into the hollow chamber, thus contributing to a higher luminous intensity. Preferably, this shielding device extends over at least 50%, more preferably at least 60%, more preferably at least 70%, more preferably at least 80%, more preferably at least 90%, and most preferably at least 95% of the longitudinal extent of the innermost light-guiding chamber. In this way, the highest possible reflection rate of the radiation reaching the inner surface can be achieved.

[0120] Preferably, this inner surface, designed as a shielding element, extends only over a maximum of 95%, preferably a maximum of 90%, preferably a maximum of 80%, preferably a maximum of 60%, and most preferably a maximum of 50% of the longitudinal extent of the innermost light-guiding space. This offers the advantage that the remaining part of the innermost surface can be formed by a transparent material (e.g., colored, such as red) and / or by a volume-scattering (plastic) material, such as DF23. These (remaining) parts of the innermost surface can have a brilliant surface, e.g., micro-optics, and / or a scattering surface / appearance. Preferably, these parts of the innermost surface of the innermost light-guiding space that are not designed as a shielding element are located on the end face or...The light emission surface of the innermost light-guiding space is located on the side of the cladding surface facing the light-guiding space and / or adjacent to the light emission surface. This offers the advantage that the three-dimensional structure / shape of the light-guiding space areas is visually perceptible.

[0121] Preferably, the portion of the inner surface designed as a shielding element ends at the height (viewed in the direction of the main emission direction) of an intermediate light filter (with optics) of a further lighting device, which is arranged approximately centrally in the light module (for example, a brake light). Preferably, the portion of the inner surface designed as a transparent material and / or as a volume-diffusing material begins at this height.

[0122] The wall serving as a shielding element is preferably a component of a multi-component injection-molded part, more preferably a two-component injection-molded part. The wall designed as a non-shielding element and / or the wall of the hollow body or a light-guiding space area designed as a transparent and / or volume-diffusing material is preferably a further component of a multi-component injection-molded part, more preferably a two-component injection-molded part.

[0123] Preferably, a plurality of walls and / or intermediate walls of the hollow body, which forms the plurality of light-guiding spaces, are formed by a (preferably single) multi-component injection-molded part, preferably a 2K injection-molded part. Preferably, the shielding elements of the light-guiding spaces form a (preferably first) component of the multi-component injection-molded part and are preferably injection-molded together or simultaneously (preferably within a first injection-molded process step). Preferably, the transparent and / or volume-diffusing walls of the plurality of light-guiding spaces or of the hollow body form a further (preferably second) component of the multi-component injection-molded part and are preferably injection-molded together or simultaneously (preferably within a second injection-molded process step).Preferably, this results in a 3D intermediate light panel with partitions (which are at least partially designed as a shielding device, i.e., made of opaque material). Preferably, the 3D intermediate light panel (which is open on one side in particular) is arranged on a (rigid or flexible) support, which preferably forms the boundary (on one or this side) of the hollow chambers formed by the 3D intermediate light panel. The support can be a flexible conductor strip and / or a printed circuit board, via which the at least one light source can be supplied with electrical energy. Preferably, the at least one light source, and particularly preferably the light sources for introducing radiation into the plurality of light-guiding spaces or the hollow body and especially into the hollow chambers, are arranged on the support and preferably on the flexible conductor strip and / or the printed circuit board, and project into the hollow chambers.into the light-guiding room areas.

[0124] In a further advantageous embodiment, the light module has at least three light-guiding space areas, and a shielding device is arranged between each pair of adjacent light-guiding space areas.

[0125] In a further advantageous embodiment, a longitudinal extension of the shielding device, extending along the main emission direction, covers at least 30%, preferably at least 50%, preferably 60%, preferably 70%, preferably at least 80%, preferably at least 90%, and particularly preferably at least 95% of the longitudinal extent of the two adjacent light-guiding space areas as seen in the main emission direction. In particular, a very large percentage longitudinal extension of at least 90%, and particularly preferably at least 95%, of the longitudinal extent of the two adjacent light-guiding space areas as seen in the main emission direction can achieve particularly good shielding and a reduction of any flickering effect in the adjacent light-guiding space area.The longitudinal extent of the two adjacent light-guiding space areas, as seen in the main emission direction, can refer to the overlapping portion of the two longitudinal extents of the light-guiding space areas. It can also refer to the portion of the smaller longitudinal extent of the two longitudinal extents of the two adjacent light-guiding space areas, as seen in the main emission direction. However, it is also conceivable that the percentages specified above refer to both adjacent light-guiding space areas.

[0126] In a further advantageous embodiment, the shielding device extends completely along a circumferential wall and / or surface of at least one of the adjacent light-guiding space areas. The shielding device may extend only in a longitudinal section of the circumferential wall of at least one of the adjacent light-guiding space areas (considered in the main emission direction and / or along the optical axis of the light-guiding module and / or the light-guiding space area). Preferably, the shielding device extends along the entire longitudinal extent of the circumferential wall of the at least one adjacent light-guiding space area (considered in the main emission direction and / or along the optical axis of the light-guiding module and / or the light-guiding space area).

[0127] Preferably, the shielding device extends over the entire area of ​​the circumferential wall and / or surface of a light-guiding space that faces the adjacent light-guiding space. This offers the advantage of the best possible shielding of the radiation emanating from the light-guiding space towards the adjacent light-guiding space.

[0128] Preferably, the entire shielding device is designed to be lightproof / opaque with respect to the radiation to be shielded. The terms "lightproof" and "opaque" are to be understood in particular with regard to visual radiation and / or the radiation emitted by the light module (or the light-guiding spatial areas).

[0129] In a further advantageous embodiment, the light emission surfaces, which define at least two light-guiding space areas, and preferably at least three light-guiding space areas, are arranged offset from each other in the main emission direction.

[0130] In a further advantageous embodiment, at least two, preferably at least three, light-guiding space regions have (in particular pairs) different longitudinal dimensions as seen in the main emission direction (and / or along the optical axis of the respective light-guiding space regions and / or along the optical axis of the light module). Particularly preferably, all light-guiding space regions have different longitudinal dimensions. This advantageously enhances the three-dimensional impression on the viewer.

[0131] The longitudinal extent of a (preferably each) light-guiding space (considered in the main emission direction and / or along the optical axis of the respective light-guiding space regions and / or along the optical axis of the light module) preferably lies in the range between 20 mm and 70 mm, more preferably between 25 mm and 60 mm, and most preferably between 30 mm and 50 mm. The offset of the longitudinal extent of two (preferably adjacent) light-guiding space regions is preferably at least 2 mm, more preferably at least 3 mm, and most preferably at least 5 mm. The offset of the longitudinal extent of two (preferably adjacent) light-guiding space regions is preferably at most 15 mm, more preferably at most 10 mm, more preferably at most 8 mm, and most preferably at most 5 mm.

[0132] Preferably, the (maximum) offset in the longitudinal extent of the various light-guiding space regions is distributed essentially equally across the light-guiding space regions. For example, in the case of three light-guiding space regions, the offset between the light-guiding space region with the smallest longitudinal extent and the one with the largest longitudinal extent can be distributed such that these two light-guiding space regions form an (essentially) equal offset with the light-guiding space region with an intermediate longitudinal extent.

[0133] Preferably, the multitude of light-guiding spatial regions are arranged in a staggered manner with respect to their respective longitudinal extent (considered in the main emission direction and / or along the optical axis of the respective light-guiding spatial regions and / or along the optical axis of the light module). For example, the light-guiding spatial regions can be arranged from the inside out according to their increasing or decreasing longitudinal extent. This creates a visual impression of luminous, staggered elements or solids, which preferably also offer the possibility of animation.

[0134] This proposed lighting module offers the advantage that it eliminates the need for intermediate light panels that resemble a 3D object, nor does it require creating an infinity effect through optically complex, semi-transparent, staggered, reflective surfaces. Furthermore, such infinity-effect mirrors are not sufficiently animated, as they simply switch on and off.

[0135] Intermediate light lens solutions have the disadvantage that they cannot be sharply separated if animability is desired.

[0136] Preferably, the light-guiding spatial areas with different longitudinal dimensions are arranged such that the offset of their longitudinal dimensions (at least partially and preferably the entire offset) has an effect on the side facing the viewer or on the side of the light emission surface, so that preferably the respective light emission surfaces (viewed in the main direction of emission) are arranged offset from each other.

[0137] It is also conceivable that, for example, two (or all) of the numerous light-guiding room areas have (essentially) the same longitudinal extent. The choice of the respective longitudinal extent can also be used for design purposes.

[0138] In a further advantageous embodiment, the light-emitting surface is a front-end boundary surface of the light-guiding space, the transverse extent of which (of a continuous section in the cross-sectional plane) measured perpendicular to the main emission direction is at most one-third, preferably at most one-quarter, and particularly preferably at most one-fifth of the longitudinal extent of the light-guiding space measured along the main emission direction. This allows for a higher light intensity of the radiation emitted by the light module via the respective light-guiding spaces.

[0139] The transverse dimension (of a continuous section in the cross-sectional plane) of the light-emitting surface preferably lies in the range between 4 mm and 15 mm, more preferably between 6 mm and 10 mm. Preferably, the respective transverse dimension (of a continuous section in the cross-sectional plane) of the light-emitting surface of at least two light-guiding space regions is different from one another (measured along the same cross-sectional plane). Particularly preferably, the respective transverse dimension of the light-emitting surface of all light-guiding space regions is different from one another. In a preferred embodiment, the light-guiding emission surfaces are arranged in a staggered pattern according to their transverse dimension, for example, according to their respective increasing or decreasing transverse dimension.

[0140] It would also be conceivable that the transverse extent of the light emission surface described above is (essentially) the same for at least two light-guiding room areas and preferably for all light-guiding room areas.

[0141] In a further advantageous embodiment, the light-emitting surfaces extend substantially parallel to one another, preferably being flat surface elements and particularly preferably planar surfaces. Preferably, the respective light-emitting surfaces are designed and arranged such that they are (substantially) arranged in principal planes of extension that are parallel to one another.

[0142] In a further advantageous embodiment, different light sources are assigned to the light-guiding spatial bodies, which are preferably controllable independently of each other and which are particularly preferably controllable independently of each other for the implementation of different lighting functions of the lighting device and / or for the display of an animation.

[0143] Preferably, the light module includes a control unit that can separately control the brightness of a light source emitting radiation into a first light-guiding area and the brightness of a light source emitting radiation into a second light-guiding area. Preferably, a storage device is provided in which parameters characteristic of the animation are stored. Preferably, the animation is modifiable (e.g., by a user of the vehicle and / or a manufacturer of the light module). Preferably, several animations can be stored simultaneously in the storage device, which can be selected selectively (e.g., depending on the situation). Preferably, the parameters characteristic of the animation specify the light-guiding areas to be activated, the activation sequence of the light-guiding areas to be activated, and / or the brightness of the light sources assigned to the light-guiding areas to be activated.Preferably, the (entire) animation can be triggered by just one animation instruction (e.g., given by a user of the vehicle or automatically).

[0144] In a further advantageous embodiment, as described above, the light-guiding spatial regions (in particular each) are light guide bodies. Preferably, an end face of each (respective) light guide body serves as a light exit surface (or as a light coupling surface) for at least partial (preferably substantially all) output (or at least partial coupling) of the radiation coupled into the respective light guide body from the respective light guide body.

[0145] Preferably, a rear surface of the (respective) light guide body opposite the front surface serves as a light entry surface (or as a light coupling surface) for coupling radiation emanating from the at least one light source into the respective light guide body.

[0146] Preferably, the at least one light source and preferably the light sources are each an electrically operated light source, which is preferably attached to at least one side of the light guide space area, such as the light guide body, and / or which preferably couples radiation into the light guide space area via at least one light entry side of the light guide space area.

[0147] Preferably, each light-guiding space area (e.g., light guide body) is assigned at least one, and particularly preferably exactly one (own) light source.

[0148] The light source is preferably configured as a monochromatic light-emitting diode (LED), or as an (in particular RGB) LED for emitting multicolored and / or white light and / or light of any color. Preferably, the light module comprises at least one and preferably a plurality of light sources configured as LEDs. The light module preferably comprises a circuit board and / or a printed circuit board (PCB) on which the light source and preferably the plurality of light sources are arranged, preferably in the light-guiding areas (such as the light guide). Preferably, all light sources, such as all LEDs, of the light module are arranged on the same circuit board and / or, for example, a flexible semiconductor strip, and / or are powered by it.

[0149] Preferably, the light module comprises at least one optic, and preferably optics for guiding or homogenizing the radiation emitted or generated by the at least one light source(s). Such an optic for guiding or homogenizing the generated and / or emitted light is preferably arranged between the respective light source and the light guide (or light guide area).

[0150] Preferably, the light module is (in particular, precisely) a single structural unit, which can preferably be installed and / or removed as such from a lighting device. Preferably, the light module is therefore a single piece, meaning that the individual components of the light module are spatially arranged in a specific and unalterable manner. The type of connection between the components constitutes a more than sufficiently strong (intimate) connection.

[0151] The present invention further relates to a lighting device, in particular for a (motor) vehicle, comprising at least one and preferably exactly one light module according to a (preferred) embodiment described above. The light module may have one or more features in combination with those of the embodiments described above. The lighting device mentioned above in the description of a light module may have one or more features of the lighting device described here or below, either individually or in combination with one another.

[0152] Preferably, the lighting device is a single structural unit that can be installed and / or removed from a vehicle as a whole. Preferably, the lighting device is formed in one piece.

[0153] Preferably, the lighting device comprises a (closed) housing within which the plurality of light-guiding spaces and / or the at least one light source are arranged. Preferably, the lighting device and / or the housing comprises a closing disc that seals the lighting device (or the light module) from the outside environment and through which the radiation emitted by the light module (at least partially) passes into the outside environment (and is perceptible to an observer).

[0154] Preferably, the end plate is spaced away from the light-emitting surfaces of the light-guiding areas (preferably the light-guiding body) and particularly preferably from all light-emitting surfaces of the light-guiding areas (preferably the light-guiding body). Preferably, no further optical element is arranged between the end plate and the light-emitting surfaces of the light-guiding areas (preferably the light-guiding body).

[0155] Preferably, the lighting device is a vehicle light and / or a rear light (especially a taillight) and / or a direction indicator (especially a turn signal). Preferably, the lighting device is for exterior and / or interior lighting.

[0156] The present invention further relates to a vehicle, in particular a motor vehicle, with at least one lighting device having at least one light module according to one of the embodiments described above, and preferably with at least two lighting devices, each having one light module according to the embodiment described above. The vehicle may in particular be a (motorized) road vehicle. The present invention further relates to a method for operating a light module (and preferably a lighting device) according to one of the embodiments described above, preferably a rear light and / or a headlight and / or a lamp, preferably for a vehicle to fulfill and / or implement a (in particular, exterior) lighting function of the vehicle.

[0157] Preferably, the radiation emanating from the at least one light source is introduced into the respective light entry area of ​​the light guide space areas in such a way that the light exit surface of the light guide space area lies at least partially in a, preferably straight, beam path of the introduced radiation.

[0158] According to the invention, the shielding device at least partially shields one of the two adjacent light-guiding space areas from radiation emanating from the other of the two adjacent light-guiding space areas.

[0159] Furthermore, according to the invention, the plurality of light-guiding spatial areas each emit the radiation introduced into the respective light-guiding spatial area in the form of a light distribution that has a spatial effect on a viewer.

[0160] In a preferred method, a time-varying radiation distribution is output (to a viewer) by means of a temporally different activation of at least two light-guiding space areas of the plurality of light-guiding space areas.

[0161] Preferably, this results in the output of a time-varying radiation distribution with a 3D effect. This is particularly preferred for the output of an (optical) animation.

[0162] Preferably, the light module described above is configured, suitable, and / or designed to execute the method for operating a light module, as well as all process steps already described above in connection with the method, individually or in combination. Conversely, the method can be equipped with all features described within the light module, individually or in combination, or the method for operating a light module can preferably relate to or use the light module described above (in particular, a light module described above according to a preferred embodiment). The vehicle described above can be a motor vehicle, which is in particular a driver-only vehicle, a semi-autonomous vehicle, an autonomous vehicle (for example, of autonomy level 3, 4, or 5 (of standard SAE J3016)), or a self-driving vehicle.Level 5 autonomy refers to fully automated vehicles. The vehicle can also be a driverless transport system. It can be controlled by a driver or drive autonomously.

[0163] Furthermore, the vehicle may be a road vehicle, an air taxi, an airplane, or another means of transport or vehicle type, such as an air, water (e.g., ship), or rail vehicle.

[0164] The present invention of a light module for a vehicle lighting device and a lighting device (for a vehicle) has been described in connection with a vehicle. However, the present invention is also transferable to other light modules or lighting devices or lighting systems, such as in the general transportation sector (e.g., aircraft construction, rail vehicles, shipbuilding), in the field of general lighting and / or interior lighting, in the field of advertising lighting and / or in the field of consumer electronics, and / or to lighting functions to be fulfilled (e.g., illumination) in these fields. The applicant reserves the right to patent a light module for a lighting device from one of the aforementioned fields and / or a use of the described light module or lighting device.to also claim the operation of a light module or a lighting device for this purpose.

[0165] Further advantages and embodiments are shown in the accompanying drawings, where identical reference numerals denote identical or equivalently acting elements:

[0166] It shows:

[0167] Fig. 1 is a schematic cross-sectional view of a light module according to a first preferred embodiment; Fig. 2 is a schematic cross-sectional view of a light module according to a modified first preferred embodiment;

[0168] Fig. 3 shows a schematic cross-sectional view of a light module according to a second preferred embodiment;

[0169] Fig. 4 shows a schematic cross-sectional view of a light module according to a third preferred embodiment;

[0170] Fig. 5 shows a schematic cross-sectional view of a light module according to a modified third preferred embodiment;

[0171] Fig. 6 shows a schematic cross-sectional view of a light module according to a fourth preferred embodiment;

[0172] Fig. 7 shows a frontal view of a light module according to a preferred embodiment;

[0173] Fig. 8 shows a vehicle with a light module according to the invention.

[0174] Figure 1 shows a schematic cross-sectional view of a light module 10 according to a first preferred embodiment.

[0175] The light module 10 can be a light module for one of the lighting devices 2 of a vehicle 1 illustrated by way of example in Fig. 8.

[0176] The light module 10 has a plurality of, here three, light-guiding spaces 110, 120 and 130. In the preferred embodiment shown in Figure 1, the light-guiding spaces 110, 120 and 130 are each a light-guiding element 11, 12, 13.

[0177] The light-guiding spaces 110, 120, and 130, or the light-guiding elements 11, 12, and 13, can extend circumferentially, preferably completely, around a central area, such that the respective light-guiding spaces 110, 120, and 130, or the light-guiding elements 11, 12, and 13, are each visible twice in a cross-sectional view (as shown here in Fig. 1). The light module 10 has a plurality of light sources, each of which is identified by the reference numeral 26. These can, for example, each be an LED.

[0178] The light sources 26 are arranged such that the radiation emanating from (preferably generated by) the respective light source 26 is coupled into the respective light guide bodies 11, 12 and 13 via a (coupling) optic 262 via the respective end faces of the respective light guide bodies 11, 12 and 13 which serve as light entry surfaces 112, 122 and 132.

[0179] The reference numeral 260 designates a (especially 2K) separating bridge, i.e., in particular a 2-component separating bridge, for the respective shielding of the light emitted by the light source 26.

[0180] The light coupled into the light-guiding space areas 110, 120, 130 or the light-guiding bodies 11, 12, 13 is directed at least partially and preferably to a significant extent (mainly) to the respective light-exiting surface 114, 124, 134 opposite the light-entry surface.

[0181] The reference symbol L indicates the main emission direction along which the light module emits or radiates light towards the surroundings.

[0182] Fig. 1 also shows that (all) three light guide space areas 110, 120, 130, here the three light guide bodies 11, 12, 13, are designed with an elongated cross-section, with their main direction of extension extending along the main direction of emission.

[0183] Reference numeral 18 designates a shielding device, one of which is arranged between the two adjacent light guide areas 120 and 130 or light guide bodies 12 and 13, and the other shielding device is arranged between the two adjacent light guide areas 110 and 120 or light guide bodies 11 and 12.

[0184] In the preferred embodiment shown in Fig. 1, the shielding device 18 is a PVD coating of the outer cladding surface of the boundary of the light guide area 11 and 120, or here of the light guide body 11 and 12. The preferred first variant or embodiment of a light guide module 10 shown in Fig. 1 shows a combination of several, preferably nested, light guides 11, 12, 13 with end-face coupling (at the end faces 114, 124, 134).

[0185] Furthermore, this first variant shows a metallization (at least) of one cladding surface of the light guide to shield or prevent “light leakage”.

[0186] Optics for light guidance or homogenization of the supplied light are preferably located at the input and output coupling sides (of the light guide body and / or the light guide space areas).

[0187] The coupling optics 262 can be a separate component, a 2k optic with separators (for separating the light sources), or mounted directly onto the light guides. In example variant 1, a separate 2k component is shown.

[0188] Alternatively, the separation can be achieved by extending the light guide with metallization extending to that point (not shown in the figure).

[0189] The first variant shown in Fig. 1 offers the best shielding between the light guides 11, 12, 13 compared to the preferred embodiments of light modules shown in the other figures, and thus the best animability. Furthermore, a representation of the "glass body" optics or a "glass body appearance" (as a design option) is possible.

[0190] Reference numeral 30 designates an optical device for implementing a brake light function. Reference numerals 28 designate a variety of light sources, preferably LEDs, which provide a (comparatively) very bright light function or illumination.

[0191] As can be seen from Fig. 1, the optical components, in particular the optics 30 and the light sources 28, are arranged within or centrally to (in particular all) the light guide space areas (or light guide bodies) for the implementation of the brake light function (relative to a cross-sectional plane perpendicular to the main emission direction).

[0192] Preferably, separating webs 32 are provided on both sides, which are arranged between the light sources or between the optical components for implementing the brake light function and the light sources for generating the radiation to be coupled into the light-guiding areas and / or their coupling optics 262. These separating webs 32 also advantageously shield the radiation emitted by one of the light sources 28 towards the light-guiding areas or light guides. Conversely, the separating webs 32 also advantageously shield the radiation emitted by one of the light sources 26 towards the optics for implementing the brake light function.

[0193] The reference numeral 14 designates an aperture which extends laterally along the main emission direction L and preferably along the entire longitudinal extent (considered in the direction or along the main emission direction) of the (outermost) light guide space area 130 or light guide body 13.

[0194] Preferably, the aperture 14 extends completely along the outer surface of the outer light-guiding space area 130 or of the light-guiding body 13. The aperture 14 can be spaced (in particular everywhere) away from the adjacent surface of the outer surface or the surface facing the aperture.

[0195] Reference numeral 22 designates a further light guide for implementing another lighting function (e.g., flashing light) that differs from the other lighting functions. For this purpose, a (separate) light source 24 is provided, which emits and / or generates light for coupling into the light guide 24.

[0196] Reference numeral 22 can refer to a thick-walled optic for other lighting functions, for example a flashing light.

[0197] The reference numeral 20 designates a carrier, in particular for the light sources 26 for output and / or generation of the radiation coupled into the light guide bodies 11, 12, 13 and / or for the light sources 28 for output and / or generation of the radiation coupled into the optics 30 for the implementation of the brake light function and / or the radiation output in the brake light function and / or for the light source 24 for output and / or generation of the radiation coupled into the light guide body 22.

[0198] Preferably, the carrier is a conductor track and / or a flexible (conducting) strip, which is preferably suitable and intended for supplying electrical power to (all) the light sources 26, 24, 28 arranged on it. The reference numerals Luo, L120, 130 denote the respective longitudinal dimensions (i.e., the geometric extent seen along the main emission direction L) of the light guide elements 11, 12, 13. It is evident that these have a staggered longitudinal dimension. The innermost light guide element 11 has the smallest longitudinal dimension Luo, and the outermost light guide element 13 has the largest longitudinal dimension L120.

[0199] The reference symbol Lis denotes the (geometric) longitudinal extent of the shielding device 18 (here designed as a metallization or PVD coating), illustrated here by the same longitudinal arrow as the extent of the light guide body 120, as viewed along the main emission direction L. It is evident that this shielding device has the same longitudinal extent as the geometric longitudinal extent of an overlapping area of ​​the two adjacent light guide space regions 120 and 130, viewed along the main emission direction L. This allows for (maximum) shielding of light emerging from one of the adjacent light guide space regions 120, 130 in the direction of the other light guide space region.

[0200] A preferred manufacturing process for the light module shown in Fig. 1 preferably comprises the following steps.

[0201] Provision and / or manufacture of a 1K injection-molded light guide or light guide body 11 or light guide space area 110 (preferably step 1); PVD coating of the outer surface (preferably step 2);

[0202] Overmolding of light guide 11 or light guide body 110 with light guide 12 or light guide body 12 (preferably third step);

[0203] PVD coating of the outer cladding surface (of the light guide body 12) (preferably fourth step);

[0204] Overmolding of light guides 11 and 12 (or light guide bodies 11, 12) with light guide 13 or light guide body 13 (preferably fifth step);

[0205] Manufacturing and / or providing a 1K injection molded aperture 14 (preferably step six);

[0206] Adding aperture 14 (preferably in step seven)

[0207] Figures 2-6 show further preferred embodiments of the light modules 10 according to the invention (for lighting devices 2 of vehicles 1). The same reference numerals denote identical or equivalently functioning elements or devices, unless otherwise described.

[0208] Fig. 2 shows a schematic cross-sectional view of a light module 10 according to a modified first preferred embodiment, as shown in Fig. 1.

[0209] In contrast to the preferred first embodiment shown in Fig. 1, in this preferred modified first embodiment no coating of the cladding surfaces of the optical fibers 11, 12, 13 is provided as a shielding device 18, but rather an air gap between the optical fibers 11, 12 and 13.

[0210] As shown in the two enlarged sections of Fig. 2, the air gap 18 can be formed by spacer elements 36 and 40, which are designed here as geometric shapes on the optical fibers 11 and 12. The geometric shape 40, or the geometric shape 36, ensures that a defined distance is maintained between the optical fibers or optical fibers.

[0211] It is conceivable that, as with the spacer element 36 of the optical fiber 12, the spacer element is designed as a projection, essentially rectangular in cross-section, which is arranged in a recess and / or notch of the optical fiber 11. The optical fibers 11 and 12 can have further end regions 38, 34 (preferably rectangular in cross-section), which serve for mounting on the coupling optics and / or a support.

[0212] Alternatively, the spacer element can also have a triangular cross-section, as shown in the spacer element designated with reference numeral 40. One point of the triangle can contact the adjacent optical fiber to fix a distance between two adjacent optical fibers.

[0213] The variant of the first embodiment shown in Fig. 2 particularly illustrates a combination of several nested optical fibers with end-face coupling. In the embodiment proposed here, this results in an air gap between the cladding surfaces of the (adjacent) optical fibers for shielding (see Fig. 2).

[0214] A preferred manufacturing process for the light module 10 shown in Fig. 2 preferably comprises the following steps: Providing and / or manufacturing a 1K injection-molded light guide or light guide body 11 or light guide space 110 (preferably step 1); Providing and / or manufacturing a 1K injection-molded light guide or light guide body 12 or light guide space 120 (preferably step 2); Providing and / or manufacturing a 1K injection-molded light guide or light guide body 13 or light guide space 130 (preferably step 3);

[0215] Manufacturing and / or providing a 1K injection molded sheet 14 (preferably step 4);

[0216] Adding the light guides 11, 12, 13 and aperture 14 (preferably step 5)

[0217] Fig. 3 shows a schematic cross-sectional view of a light module 10 according to a second preferred embodiment (variant 2), namely a combination of several nested optical fibers 1, 12, 13 with end-face coupling with an intermediate deep-drawn opaque component 42, 44 (separator).

[0218] The following can be used in particular as a separator, which can act as a shielding device:

[0219] - White opaque foil

[0220] - Metallized foil

[0221] - Black foil

[0222] - Black foil with subsequently applied metallization

[0223] A preferred manufacturing process for the light module 10 shown in Fig. 3 preferably comprises the following steps:

[0224] Provision and / or manufacture of a 1K injection-molded light guide or light guide body 11 or light guide space area 110 (preferably step 1); deep drawing of a separator 42 (preferably step 2);

[0225] Provision and / or manufacture of a 1K injection-molded light guide or light guide body 12 or light guide space area 120 (preferably step 3); deep drawing of a separator 44 (preferably step 4);

[0226] Provision and / or manufacture of a 1K injection-molded light guide or light guide body 13 or light guide space area 130 (preferably step 3); manufacture and / or provision of a 1K injection-molded aperture 14 (preferably step 4 or 6);

[0227] Joining the light guides 11, 12, 13, separators 42, 44 and aperture 14 (preferably final or 5 step)

[0228] Fig. 4 shows a schematic cross-sectional view of a light module 10 according to a third preferred embodiment (variant 3), in particular a stack of optical fibers (end-face extraction). The light module 10 is obtained by injecting a second opaque component 46, 48 (grey, black or white).

[0229] The light module 10 is preferably a combination of several, in particular nested, light guides 11, 12, 13 with end-face coupling with an intermediate second component 46, 48 (in particular a 2K injection molded separator).

[0230] The two reference numerals 46 and 48 identify the (preferred 2K) separating layer acting as a shielding device (in each case).

[0231] The second component is preferably a white opaque and / or black opaque and / or grey opaque component.

[0232] Reference numeral 8 designates the optical prescribing optics.

[0233] The reference number 30 here indicates an insert optic for a different lighting function (e.g. brake light).

[0234] Reference numeral 22 indicates (also preferred here) a thick-walled optic for a different lighting function, for example a flashing light.

[0235] Reference numeral 14 designates (also preferred here) a volume spreader as an extra part.

[0236] Reference numeral 20 denotes a circuit board designed as a carrier (with LEDs as light sources), which is also preferred here.

[0237] A preferred manufacturing process for the light module 10 shown in Fig. 4 preferably comprises the following steps: Provision and / or manufacture of a 2K injection-molded light guide or light guide body 11 or light guide space area 110 (preferably step 1); injection of the second component, which serves as a 2K separating layer or as a shielding device (preferably step 2);

[0238] Provision and / or manufacture of a 2K injection-molded light guide or light guide body 12 or light guide space area 120 (preferably step 3); injection of the second component, which serves as a 2K separating layer or as a shielding device (preferably step 4);

[0239] Provision and / or manufacture of an injection-molded light guide or light guide body 13 (especially as a 2K or as a 1K) or light guide space area 130 (preferably step 4);

[0240] Optionally, the second component is injected (e.g., as step 5). Preferably, no second component is injected onto the outermost optical fiber or light guide body. Preferably, a volume diffuser is arranged as a separate part on the outermost optical fiber body. This can be a 1K injection-molded part or a (deep-drawn) film. The volume diffuser can be designed as a separate part or as a second component (see Fig. 5).

[0241] Joining the light guides 11, 12, 13, optical pre-scattering optics and aperture 14 (preferably step 5 or 6).

[0242] It is possible for the optical fibers 11, 12, 13 to be injection molded simultaneously. Thus, a separate cavity can be provided for each optical fiber, which is filled with plastic in a simultaneous or simultaneously executable injection step, whereby the optical fibers produced in this injection molding process are manufactured as separate individual parts that are then joined together.

[0243] It is also conceivable that the optical fibers 11, 12, 13 are injection molded sequentially. It would also be conceivable, for example, to first injection mold one optical fiber and then inject a second component (which preferably forms the shielding element). Then, preferably, an adjacent optical fiber is injection molded, so that a metallurgical bond between the optical fibers is preferably formed. This can be repeated successively until the last optical fiber is in place.

[0244] Fig. 5 shows a schematic cross-sectional view of a light module 10 according to a modified third preferred embodiment (variant 3a), here a stack of light guides (end face coupling), which can be obtained by injecting a second DF material component 47, 49 at least for the outside (solid body view).

[0245] A preferred design of the light module can correspond to that shown in Fig. 4, with the difference that a DF material component is chosen here as the intermediate second component serving as a shielding device (preferably in each case).

[0246] One preferred manufacturing process is comparable to that of the third embodiment:

[0247] Provision and / or manufacture of a 2K injection molded light guide or light guide body 11 or light guide space area 110 (preferably step 1);

[0248] Injection of the second component, which serves as a DF material separator or as a shielding device (preferably step 2);

[0249] Provision and / or manufacture of a 2K injection molded light guide or light guide body 12 or light guide space area 120 (preferably step 3);

[0250] Injection of the second component, which serves as a DF material separator or as a shielding device (preferably step 4);

[0251] Provision and / or manufacture of a 2K injection-molded light guide or light guide body 13 or light guide space area 130 (preferably step 5); injection of the second component, which may preferably be a component serving as a volume spreader (preferably step 6); joining of the light guides 11, 12, 13, optical pre-scattering optics and aperture 14 (preferably step 7).

[0252] It is possible for the optical fibers 11, 12, 13 to be injection molded simultaneously. Thus, a separate cavity can be provided for each optical fiber, which is filled with plastic in a simultaneous or simultaneously executable injection step, whereby the optical fibers produced in this injection molding process are manufactured as separate individual parts that are then joined together.

[0253] It is also conceivable that the optical fibers 11, 12, 13 are injection molded sequentially. It would also be conceivable, for example, to first injection mold one optical fiber and then inject a second component (which preferably forms the shielding element). Then, preferably, an adjacent optical fiber is injection molded, so that a metallurgical bond between the optical fibers is preferably formed. This can be repeated successively until the last optical fiber is in place.

[0254] Figure 6 shows a schematic cross-sectional view of a light module 10 according to a fourth preferred embodiment (variant 4), a 3D intermediate light panel with partitions (e.g., white or gray). This only partially implements the (3D) design aesthetic. Compared to the preferred embodiments proposed above, the efficiency is lower and a comparatively larger installation space is required.

[0255] The reference symbol 66 indicates an opaque wall or partition wall.

[0256] Reference numeral 50 designates a circuit board on which a multitude of light sources 52, 54, 56 are arranged. The light sources 52 illuminate an intermediate light disc 58 (here centrally located) with optics for, for example, a brake light.

[0257] Reference numeral 70 indicates a translucent or clearly transparent wall, which here has a stepped cross-section and through which light introduced by the light sources 54, 56 is emitted (in the direction of the outside environment).

[0258] Reference numeral 150 exemplifies a light entry area, which here is defined by a spatial area within the space formed by the intermediate wall 66 (and the translucent wall 70), into which radiation generated by the light source 56 is introduced.

[0259] The lateral wall sections, characterized by reference numerals 72 and 73, preferably have a scattering surface / appearance, while the frontal surface areas 68 (i.e., the surface areas facing the outside environment or the surface areas lying along a plane oriented perpendicular to the main direction of radiation) preferably have brilliant surfaces, such as micro-optics.

[0260] The reference symbols 60, 62, 64 identify the light-guiding space areas formed by the opaque wall or intermediate wall 66 and the translucent wall 70 (as a boundary), into which the light sources 54 and 56 respectively couple light.

[0261] The opaque wall or intermediate wall 66 forms the shielding device between the light-guiding space areas 60, 62 and 64. Fig. 7 shows a frontal view of a preferred embodiment of a light module 10, i.e., a view of the light module 10 from the perspective of an observer (with a viewing direction opposite to the main emission direction L, which here points perpendicularly out of the plane of the figure).

[0262] Only one half of the light module is shown, specifically only the right half of a light module 10 divided into two halves by a plane of symmetry A.

[0263] Three circumferential light emission surfaces 78, 76 and 74 are shown, in which at least the two outer light emission surfaces 76 and 74 (and preferably all three) are the end faces of light guide bodies (or light guides) and / or light guide spatial areas.

[0264] Fig. 8 shows a vehicle 1 with two (external) lighting devices 2 designed here as rear lights, each of which has a light module 10 according to the invention.

[0265] The applicant reserves the right to claim all features disclosed in the application documents as essential to the invention, provided they are novel individually or in combination compared to the prior art. It is further noted that the individual figures also describe features which may be advantageous on their own. A person skilled in the art will immediately recognize that a particular feature described in a figure may be advantageous even without incorporating other features from that figure. Furthermore, a person skilled in the art will recognize that advantages may also arise from a combination of several features shown in individual or different figures.

[0266] Reference symbol list

[0267] 1 vehicle

[0268] 2 Lighting device

[0269] 10 light modules

[0270] 11, 12, 13 optical fibers

[0271] 14 aperture

[0272] 18 Shielding device, here PVD coating

[0273] 20 carriers

[0274] 22 optical fibers

[0275] 24 light bulbs

[0276] 32 dividing bridge

[0277] 28 bulbs for brake light function

[0278] 30 Optics for brake light function

[0279] 42, 44 Shielding device, separator

[0280] 46, 48 Shielding device, 2K-T separating layer

[0281] 47, 49 Shielding device, DF material separating layer

[0282] 50 circuit board, 52, 54, 56 light source

[0283] 60, 62, 64 Light-guiding room areas

[0284] 66 Opaque wall, partition wall

[0285] 58 Intermediate light lens

[0286] 68 Frontal surface areas

[0287] 70 Translucent wall

[0288] 72, 73 Side wall areas

[0289] 74, 76, 78 Light emission surfaces 0, 120, 130 Light guide room areas 2, 122, 132 Light entry areas, light entry surfaces 4, 124, 134 Light emission surface

[0290] 150 light entry area

[0291] 260 (Coupling) Optics

[0292] 262 Separating web A Plane of symmetry L Main radiation direction

Claims

Patent claims 1. Light module (10) for a lighting device (2) of a vehicle (1) with at least one light source (26) and with a plurality of adjacent light-guiding space areas (110, 120, 130) extending in a main emission direction (L), which are preferably light guide bodies (11, 12, 13), wherein the light-guiding space areas (110, 120, 130) are each at least partially bounded in the main emission direction (L) by a light emission surface (114, 124, 134) and each have a light entry area (150, 112, 122, 132) into which radiation emanating from the at least one light source (26) can be introduced such that the light emission surface (114, 124, 134) of the light-guiding space area (110, 120, 130) lies at least partially in a, preferably straight, beam path of the introduced radiation, characterized in thatthat the light module (10) has at least one shielding device (18; 42; 44) arranged between two adjacent light-guiding space areas (110, 120, 130), which is suitable and intended to shield at least one of the two adjacent light-guiding space areas (110, 120, 130) at least partially from radiation emanating from the other of the two adjacent light-guiding space areas (110, 120, 130).

2. Light module (10) according to claim 1, wherein the plurality of light-guiding space areas (110, 120, 130) is each suitable and intended for the spatial emission of light acting on a viewer of the radiation introduced into the respective light-guiding space area (110, 120, 130), and / or wherein a light-guiding space area of ​​the plurality of light-guiding space areas (110, 120, 130) is suitable and intended for the spatial emission of light acting on a viewer of the radiation introduced into the respective light-guiding space area (110, 120, 130).

3. Light module (10) according to claim 1 or 2, characterized in that the plurality of light guide space areas (110, 120, 130) are suitable and intended and / or configured to perform at least one common light function.

4. Light module (10) according to one of the preceding claims, characterized in that the light module (10) has at least three light guide space areas (110, 120, 130) and a shielding device (18; 42; 44) is arranged between each two adjacent light guide space areas (110, 120, 130).

5. Light module (10) according to one of the preceding claims, characterized in that a longitudinal extension of the shielding device (Lis) extending along the main emission direction (L) covers at least 50%, preferably 70%, preferably at least 80%, preferably at least 90%, preferably at least 95% of the longitudinal extension (LI) seen in the main emission direction (L). 20 , LI 30) of the two adjacent light guide room areas (110, 120, 130).

6. Light module (10) according to one of the preceding claims, characterized in that the shielding device extends fully along a circumferential wall of at least one of the adjacent light guide space areas (110, 120, 130).

7. Light module (10) according to one of the preceding claims, characterized in that the shielding device has at least one spacer element (36, 40) which is suitable and intended to space two adjacent light guide space areas (110, 120, 130) apart from each other at least partially.

8. Light module (10) according to one of the preceding claims, characterized in that the light emission surfaces (114, 124, 134) which define at least two light guide space areas, preferably at least three light guide space areas, are arranged offset from each other in the main emission direction (L).

9. Light module (10) according to one of the preceding claims, characterized in that at least two, preferably at least three, light-guiding space areas (110, 120, 130) have a different longitudinal extent (Luo, LI) as seen in the main emission direction (L). 20 , LI 30 exhibit.

10. Light module (10) according to one of the preceding claims, characterized in that the light emission surface is in each case an end-face boundary surface of the light guide space area, the transverse extent of which measured perpendicular to the main emission direction is at most one third, preferably at most one quarter and particularly preferably at most one fifth of the longitudinal extent of the light guide space area (110, 120, 130) measured along the main emission direction (L).

11. Light module (10) according to one of the preceding claims, characterized in that the plurality of light guide space areas are interlocking and / or slid light guide space areas.

12. Light module (10) according to the preceding claim, characterized in that different light sources (26) are assigned to the light guide spatial bodies (110, 120, 130), which can be controlled independently of each other and which are particularly preferably controllable independently of each other for the implementation of different light functions of the lighting device (10) and / or for the display of an animation.

13. Light module (10) according to one of the preceding claims, characterized in that the light guide space areas (110, 120, 130) are each a light guide body (11, 12, 13), and each end face (112, 122, 132) of the light guide bodies (11, 12, 13) serves as a light entry surface for coupling radiation emanating from the at least one light source (26) into the respective light guide body (11, 12, 13) and each further end face (114, 124, 134) serves as a light exit surface for at least partially emitting the radiation coupled into the respective light guide body (11, 12, 13) from the respective light guide body (11, 12, 13).

14. Vehicle (1), in particular motor vehicle, with at least one lighting device (2) comprising at least one light module (10) according to one of the preceding claims and / or preferably with at least two lighting devices (2) each comprising at least one light module (10) according to one of the preceding claims.

15. Method for operating a light module (10) according to one of the preceding claims, characterized in that the shielding device (18; 42; 44) shields at least one of the two adjacent light-guiding space areas (110, 120, 130) at least partially from radiation emanating from the other of the two adjacent light-guiding space areas (110, 120, 130), and that the plurality of light-guiding space areas (110, 120, 130) each shield the respective The light guide area (110, 120, 130) emits radiation in the form of a light distribution that has a spatial effect on the viewer.

16. Method according to the preceding claim, wherein a time-variable radiation distribution is output by means of a temporally different activation of at least two light-guiding space areas of the plurality of light-guiding space areas.

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