Optical arrangement and vehicle

Abstract

Optical arrangement with at least one reflector (4, 26, 36, 52, 76) and with at least one printed circuit board (2, 20, 48), wherein the reflector (4, 26, 36, 52, 76) has at least two reflector sections (6, 24, 38, 54, 78), each having at least one coupling-in surface (8, 32, 40, 56) and at least one coupling-out surface (10, 42, 62) for light, wherein light from at least one LED (14, 30, 46, 68, 72, 82) or a light source can be radiated into the respective reflector section (6, 24, 38, 54, 78) via the respective coupling-in surface (8, 32, 40, 56), wherein the LEDs (14, 30, 46, 68, 72, 82) or the light sources on the circuit board (2, 20, 48) are arranged and / or designed such that they emit light parallel to the direction of extension of the circuit board (2, 20, 48), wherein light coupled in via the coupling surface (8, 32, 40, 56) is guided in the respective reflector section (6, 24, 38, 54, 78) to the coupling-out surface (10, 42, 62),wherein the reflector sections (6, 24, 38, 54, 78) are arranged in series, wherein a respective LED (14, 30, 46, 68, 72, 82) or light source is assigned to a respective reflector section (6, 24, 38, 54, 78), wherein the reflector sections (6, 24, 38, 54, 78) each have at least one reflection surface (12, 28, 44, 84) in order to guide the light from the coupling-in surface to the coupling-out surface in the reflector section (6, 24, 38, 54, 78), and wherein a respective reflector section (6, 24, 38, 54, 78) is designed as a prong which extends from the respective reflection surface (12, 28, 44, 84), the respective coupling-in surface (8, 32, 40, 56) and the respective coupling-out surface (10, 42, 62), wherein by arranging several reflector sections (6) in the reflector (4) between the respective prongs, recesses are formed in which the respective LED (14, 30, 46, 68, 72, 82) or light source is arranged, wherein the respective reflector section (6, 24, 38, 54,78) in the form of the prong has two side surfaces (64) extending side by side from the coupling surface (8, 32, 40, 56) to the coupling-out surface (10, 42, 62), between which the respective reflection surface (12, 28, 44, 84) extends, wherein the side surfaces (64) are designed to be reflective, , wherein a respective reflection surface (12, 28, 44, 84) overlaps at least the coupling surface (8, 32 40 56) of the adjacent reflector section (6, 24, 38, 54, 78) lying in the direction of extension, if a further reflector section (6, 24, 38, 54, 78) extends from the respective coupling surface (8, 32, 40, 56) in the direction of extension of the respective reflection surface (12, 28, 44, 84), and wherein the circuit board (2, 20, 48) has a circuit board recess (50) for a respective reflector section (6, 24, 38, 54, 78) designed as a prong, into which the respective prong dips or penetrates, such that the coupling surface (8, 32, 40, 56) is partially immersed in or penetrates the circuit board (2, 20, 48).

Description

[0001] The invention is based on an optical arrangement with at least one reflector and with at least one circuit board and a vehicle with an optical arrangement.

[0002] In order to homogeneously illuminate surfaces covered or coated with a transparent, translucent or diffuse material (hereinafter referred to as the "face material") and which have only a small installation depth beneath the face material, a matrix of LEDs (light emitting diodes) and TIR lenses (total internal reflection) can be used. This allows a large number of LEDs to be installed on a small surface and thus generate a high light intensity. This arrangement, which is also used in screens, for example, makes it possible for the light to be visible through the face material and thus illuminates the surface homogeneously through the material. However, if RGB LEDs (red, yellow, blue LEDs) are to be used, this is not possible because TIR lenses can cause chromatic aberration and thus image errors.

[0003] Another option for homogeneously illuminating surfaces through a surface material is to use an array of LEDs in conjunction with light guides. This arrangement can also be designed so that it can be placed in an area with a shallow installation depth. However, to ensure homogeneous illumination with this arrangement, a large number of LEDs are necessary because the installation depth is very shallow. In other words, the light from the LEDs cannot be sufficiently scattered over such a short distance by the light guides.

[0004] There is already a large amount of prior art dealing with the homogeneous illumination of surfaces. US 2019 / 0 137 052 ​​A1, currently considered the closest, discloses an optical arrangement comprising the following features: at least one reflector and at least one circuit board, wherein the reflector has at least two reflector sections, each having at least one coupling surface and at least one coupling surface for light. Light from at least one LED or light source can be radiated into the respective reflector section via the respective coupling surface. The LEDs or light sources are arranged and / or configured on the circuit board such that they emit light parallel to the direction of extension of the circuit board. In-coupled light in the respective reflector section is guided to the coupling surface via the coupling surface. The reflector sections are arranged in series.wherein a respective LED or light source is assigned to each reflector section, the reflector sections each have at least one reflective surface to guide the light from the input surface to the output surface in the reflector section, each reflector section is designed as a prong, which is delimited by the respective reflective surface, the respective input surface, and the respective output surface, by arranging several reflector sections in the reflector between the respective prongs, recesses are formed in which the respective LED or light source is arranged, the respective reflector section in the form of a prong has two side surfaces extending side by side from the input surface to the output surface, between which the respective reflective surface extends, the side surfaces being designed to be reflective.

[0005] Further relevant prior art can be found in CN 1 01 520 149 A, US 2008 / 0 062 714 A1, DE 10 2018 117 536 A1, DE 10 2009 051 188 A1, DE 10 2007 017 335 A1, DE 10 2012 216 690 A1, US 2010 / 0 315 834 A1, US 2010 / 0 110 667 A1 or EP 2 420 874 A1.

[0006] The object of the present invention is to create a technically simple and cost-effective optical arrangement that enables homogeneous illumination of a surface and requires little installation space. Furthermore, it is an object of the invention to create a simple and cost-effective vehicle with this optical arrangement.

[0007] The problem with regard to the optical arrangement is solved by the features of claim 1 and with regard to the vehicle according to the features of claim 11.

[0008] Particularly advantageous embodiments can be found in the dependent claims.

[0009] According to the invention, an optical arrangement is provided which has at least one reflector and at least one printed circuit board. The reflector can have at least one reflector section, each of which has at least one coupling-in surface and preferably at least one coupling-out surface for light. If a plurality of reflector sections are used, these are preferably arranged in a row. The light from at least one LED (light-emitting diode) can be radiated into the coupling-in surface of the reflector section. If a plurality of reflector sections are provided, each reflector section preferably has at least one LED. The LED is further arranged on the printed circuit board and / or designed in such a way that the light emitted by the LED can be emitted parallel to the direction of extension of the printed circuit board.Furthermore, the coupling surfaces and thus the reflector section are designed and / or arranged such that the light from the LED can be radiated into the coupling surfaces. From the coupling surface, the light can then be guided through the reflector to the coupling surface.

[0010] One advantage of the invention is that, thanks to the LED being configured such that the light is emitted parallel to the direction of extension of the circuit board, and the coupling surface of the reflector section being designed accordingly, the optical arrangement can be designed to be particularly small in a direction perpendicular to the direction of extension of the circuit board. In other words, the optical arrangement can be used in particular for illuminating surfaces that only have a small mounting depth or installation depth for illumination. In particular, the optical arrangement is suitable for backlighting, i.e. for illuminating a surface through an outer material that only has a small, in particular flat, installation space behind the material. The outer material is in particular transparent and / or translucent and / or diffuse.Furthermore, the optical arrangement can ensure homogeneous illumination of the surface, especially the backlit one, since the deflection of the LED light means the light path from the input surface to the output surface is longer, thus resulting in more even light scattering. The longer light path is achieved in particular by the LED emitting the light in the direction of extension and the subsequent deflection of the light by the reflector. This means that a large area can be illuminated by the reflector section. In conventional arrangements for backlighting surfaces that have the upper material, the light is emitted perpendicular to the direction of extension of the circuit board and thus directly in the direction of an output surface for the light, and thus the area that a conventional arrangement can illuminate is smaller.

[0011] Preferably, the optical arrangement comprises at least two reflector sections, which are preferably arranged in series.

[0012] Furthermore, it is advantageous if each reflector section has at least one respective reflection surface. The light from the LED can be guided by this from the input surface to the output surface.

[0013] The respective reflection surface can be designed differently for different reflector sections. This is advantageous if, for example, one area, especially a small one, is to be illuminated with a different intensity and / or shape than another. In other words, the respective reflector sections can have reflection surfaces that are each designed differently.

[0014] The respective reflection surface of a respective reflector section preferably extends such that it partially overlaps the adjacent reflection surface if there is another reflector section in the respective reflection direction, starting from the respective coupling surface. In other words, a reflection surface preferably overlaps at least the coupling surface of another reflector section and a part of the reflection surface thereof, in particular as viewed from a direction perpendicular to the reflection direction.If no reflector section is provided adjacent to the reflector section opposite the direction of extension of the reflection surface, the reflection surface of which can overlap the reflector section, then a further reflection surface can be arranged above the coupling surface in order to guide the light that can be coupled into the coupling surface in the direction of the reflection surface of the respective reflector section and / or in the direction of the coupling-out surface. This extends at a distance from the associated reflection surface along a similar curve to the reflection surface. In other words, a geometry of the further reflection surface can correspond to a respective overlapping section of the reflection surface that overlaps the reflection surface of a further reflector section.By overlapping the respective input surface and the respective reflection surface of an adjacent reflector section or by the additional reflection surface, the light from the LED that shines into the input surface can be prevented from radiating directly to the output surface, thus increasing the beam path of the light between the input surface and output surface. This is advantageous because it allows a high contrast to be created between the individual reflector sections and ensures that the illumination of the backlit surface is more uniform. The more the input surface overlaps, or the more the additional reflection surface projects beyond the respective reflector section, the stronger the contrast can be. If less contrast is desired, the overlap can be less pronounced. This means that crosstalk between adjacent reflector sections can be prevented if this is desired for the application.This is advantageous if, for example, a pattern is to be created using an optical arrangement that has multiple reflector sections. This pattern can thus have a high contrast, and if, for example, writing is to be created using the optical arrangement in which different LEDs from different reflector sections are switched on or off, this writing is particularly clearly recognizable. A further advantage of the fact that the light from the LED is not emitted directly onto the output surface, but preferably strikes the reflection surface entirely, is that the light image is more homogeneous and regular, since the light is scattered and reflected, preferably entirely, in a controlled manner.

[0015] Furthermore, it is advantageous if the light from the light source of a reflector section can be guided essentially entirely from the input surface to the output surface via the respective associated reflection surface and / or via the reflection surface that partially overlaps the associated input surface and the reflection surface. This also has the advantage that the contrast between the individual reflector sections is greater and thus crosstalk between individual reflector sections is lower. In other words, the light from the light source does not scatter uncontrollably, but is guided across the reflection surface in a controlled manner. This also has the advantage that the illumination of the surface and / or the backlighting of the surface is homogeneous.

[0016] Furthermore, in addition to the respective reflection surface and / or the adjacent reflection surface, the coupling surface is delimited by two side surfaces extending next to one another from the coupling surface to the coupling-out surface. The reflection surface preferably extends between these side surfaces. The side surfaces can preferably also reflect the light from the LED, i.e. can be designed to be reflective. This is advantageous because it allows a particularly good efficiency of the optical arrangement to be achieved. Furthermore, by delimiting the reflector sections by the side surfaces, contrast is increased and, if several reflector sections are arranged next to one another in this direction, crosstalk can be prevented and / or reduced. The side surfaces preferably extend perpendicular or parallel to the circuit board.

[0017] Furthermore, it can also be advantageous for the light from adjacent reflector sections arranged in a row to mix in order to create a continuous light transition and / or color transition, preferably within a row of reflector sections. This can be achieved, for example, by a distance between the output surface and the upper material, which can backlight the optical arrangement. In other words, a distance can be provided between the output surface of the reflector and / or between parts of the output surface of the reflector and a layer that backlights the optical arrangement. If several rows of reflector sections are arranged next to one another, the side surfaces can extend towards the upper material, as this makes it possible to maintain the contrast between the rows. In other words, the side surfaces project beyond the output surface towards the upper material.Thus, light mixing is possible within a row between adjacent reflector sections, but not between adjacent rows. If light mixing and / or crosstalk is desired, the side surfaces can be at the same or a different distance from the upper material as the output surface.

[0018] The choice of outer material also has a strong influence on the light mixing between the reflector sections.

[0019] Furthermore, it is advantageous if the output surfaces of the respective reflector sections are formed in a common plane. In other words, the output surface of the optical arrangement can be a surface that is arranged, for example, parallel to the circuit board. If the output surface is arranged, for example, parallel to the circuit board and the light from the light sources is emitted parallel to the direction of extension of the circuit board, the light from the respective LED of a respective reflector section is deflected, for example, by the reflection surface. The maximum deflection can be approximately 90°. This is advantageous because the comparatively long path enables homogeneous illumination and / or backlighting of a surface, since the light is deflected regularly and / or homogeneously by the reflection surface.In addition, a required installation depth of, for example, 6 to 8 millimeters can be achieved for the optical arrangement. This means that by deflecting the light, the thickness, i.e. the extent of the optical arrangement in a direction perpendicular to the circuit board, can be reduced compared to conventional arrangements. A further advantage of the output surfaces being formed in a common plane is that the light from the optical arrangement is clearly visible to an observer. If the optical arrangement is arranged behind a fabric panel in a car, for example in a car door, in a roof liner or in a side panel of the interior, the output surface can simulate the shape of this panel and the optical arrangement can backlight a surface.

[0020] Furthermore, the coupling surface preferably has a light entry opening that is bounded by both the reflection surface and the adjacent reflection surface if another reflector section extends from the respective coupling surface in the direction of the respective reflection direction. The respective associated reflection surface preferably extends away from the light entry opening. This is advantageous because the light entering the light entry opening can thus be guided by the reflection surface.

[0021] Preferably, the respective reflection surface of a respective reflector section extends from an associated coupling surface to the coupling-out surface. The shape of the reflection surface can be simulated optically, for example. The reflection surface can extend, for example, along a curve from the coupling surface to the coupling-out surface, and / or the reflection surface can be configured such that the shape of a respective reflector section is, for example, concave. The reflection surface can also be parabolic and / or elliptical and / or free-form.

[0022] Furthermore, it is advantageous if a respective reflector section is designed as a prong, at least in sections. The prong is preferably delimited by at least part of the reflection surface and by at least part of the coupling surface. In addition, the circuit board can have a respective circuit board recess for a prong of a respective reflector section, into which the prong can be immersed or penetrated. In other words, the coupling surface and / or the reflection surface can be partially embedded and / or penetrated into the circuit board. This has the advantage that the light from the LED can enter the coupling surface or the light entry opening of the respective reflector section, preferably centrally or at a desired position, when the LED of a respective reflector section is arranged on the circuit board.Furthermore, it is possible for the optical assembly to have an even smaller thickness, i.e., a smaller extension perpendicular to the direction of extension of the circuit board, and thus be integrated into installation spaces with a particularly small installation depth. The thickness of the optical assembly can thus be only a few millimeters, for example, 3 to 8 mm.

[0023] In a further exemplary embodiment, at least one respective LED circuit board can be arranged on the circuit board for a respective reflector section. At least one respective LED can be arranged on this circuit board. The LED circuit board is arranged on the circuit board in such a way that it projects away from the circuit board, in particular perpendicularly, so that the light from the respective associated LED can be radiated into the respective reflector section via the respective coupling surface. In this exemplary embodiment, LEDs are preferably used that emit light perpendicular to a fastening direction of the LED, i.e. the LEDs are preferably top looker LEDs. Furthermore, the circuit board, which has LED circuit boards, is preferably arranged approximately parallel to the coupling-out surface. In this way, the LED circuit boards can be arranged in a simple device-related manner such that the light from the respective LED can be coupled into the respective coupling surface.Alternatively, the circuit board can be arranged approximately parallel to the side surfaces. This also allows the LED light to be easily coupled into the respective coupling surface.

[0024] Another option is to mount LEDs directly onto the circuit board. To ensure they emit their light parallel to the direction of the circuit board, these are preferably side-looking LEDs.

[0025] It is also advantageous if the optical arrangement contains a plurality of reflector sections, which can be arranged in a row, with the row preferably extending in a reflection direction of the reflection surface. Furthermore, rows of reflector sections can be arranged in parallel, thus creating any desired large area of ​​reflector sections. In other words, the size of the optical arrangement can be flexibly adjusted and, for example, adapted to ambient conditions.

[0026] Preferably, several LEDs and / or one RGB LED (red, yellow, blue LEDs) can be assigned to a reflector section. For example, three LEDs with different colors can be used. Additionally or alternatively, white LEDs or, for example, a light source operating according to a Laser Activated Remote Phosphor (LARP) principle can also be used. It is also possible for various or parts of the reflector sections to have RGB LEDs or one type of light source and others or another part of the reflector sections to have white LEDs or another type of light source. Additionally or alternatively, the reflector sections can have both white and colored LEDs.

[0027] Additionally, the optical arrangement may contain a computing element and / or be connected to a computing element via appropriate means, which can, for example, control the LEDs of the various reflector sections. The computing element may, for example, store images and / or video frequencies, so that a viewer of the optical arrangement can be shown various texts and / or films, for example.

[0028] The various LEDs of the reflector sections and / or the reflector are preferably designed such that they are visible through a highly absorbent material, such as dark fabric. This is particularly advantageous when the optical arrangement is used, for example, in automotive trim panels.

[0029] Furthermore, different reflector sections can preferably have different shapes and / or heights and / or colors. This is advantageous because, for example, with different installation depths, the optical arrangement can also have different heights. Furthermore, by varying shapes and / or heights, different effects can also be achieved. For example, a reflective surface of one reflector section can have a parabolic shape, and an adjacent reflector section can, for example, have a reflective surface with an elliptical shape. Depending on what is to be displayed to a viewer, a respective light source of one reflector section or the adjacent other reflector section can then be switched on.

[0030] The reflector can be made of metal, for example. Alternatively, the reflector can also be made of plastic, preferably coated. This allows the reflector to be easily manufactured by injection molding and is also particularly cost-effective and lightweight.

[0031] The reflector surface of a reflector section, i.e., the reflection surface and / or the side surfaces, can be smooth and / or matte and / or faceted and / or have other optical structures. The reflector surface can be designed differently for different reflector sections of the optical arrangement.

[0032] Furthermore, the LED of a respective reflector section is positioned such that the light from the LED can easily couple into the light entry opening. In other words, the LED of a respective reflector section is preferably only a short distance from the coupling surface or is adjacent to it.

[0033] Furthermore, the coupling surface can be approximately perpendicular to the beam path of the LED light. Alternatively, this angle can be changed to create various effects.

[0034] Furthermore, each input surface can have an angle of approximately 90° to the output surface. Alternatively, this angle can also be changed. Depending on the angle between the input surface of a reflector section and the output surface, different lighting effects can be created.

[0035] A light-emitting diode (LED) or light-emitting diode can be in the form of at least one individually packaged LED or in the form of at least one LED chip containing one or more light-emitting diodes, or in the form of a micro-LED or a nano-LED (Smart Dust). Several LED chips can be mounted on a common substrate (“submount”) to form an LED, or they can be attached individually or together, for example, to a circuit board (e.g., FR4, metal-core board, etc.) (“CoB” = chip on board). The at least one LED can be equipped with at least one separate and / or shared optics for beam guidance, for example, with at least one Fresnel lens or a collimator. Instead of or in addition to inorganic LEDs, for example, based on AlInGaN, InGaN, or AlInGaP, organic LEDs (OLEDs, e.g., polymer OLEDs) can generally also be used. The LED chips can be directly emitting or have a phosphor in front of them.Alternatively, the light-emitting component can be a laser diode or a laser diode array. It is also conceivable to provide an OLED luminous layer or multiple OLED luminous layers or an OLED luminous region. The emission wavelengths of the light-emitting components can be in the ultraviolet, visible, or infrared spectral range. The light-emitting components can also be equipped with their own converter. The LED chips can emit white light in the standardized ECE white field of the automotive industry, for example, implemented using a blue emitter and a yellow / green converter.

[0036] The optical arrangement can preferably be arranged in and / or on a vehicle. The optical arrangement can preferably be arranged in the interior, for example, in a door panel of a vehicle. The vehicle can be an aircraft, a waterborne vehicle, or a land-based vehicle. The land-based vehicle can be a motor vehicle, a rail vehicle, or a bicycle. The vehicle is particularly preferably a truck, a passenger car, or a motorcycle. Furthermore, the vehicle can be configured as a non-autonomous, semi-autonomous, or autonomous vehicle.

[0037] The invention will be explained in more detail below using exemplary embodiments. The figures show: Fig. 1 is a schematic representation of an optical arrangement according to a first embodiment, wherein a reflector and a circuit board are shown in longitudinal section, Fig. 2 a schematic representation of an optical arrangement according to a second embodiment, wherein a reflector is shown parallel to its direction of extension and a circuit board is shown in the longitudinal step, Fig. 3a and Fig. 3b schematic representations of an optical arrangement according to a further embodiment, Fig. 4 a perspective view of a reflector according to an embodiment, Fig. 5 a schematic representation of different LEDs, and Fig. 6a and Fig. 6b a schematic sectional view of a reflector with an upper material.

[0038] In Fig. Figure 1 shows an optical assembly 1 with a circuit board 2 and a reflector 4. This has several reflector sections 6 arranged in series one behind the other.

[0039] Each reflector section 6 has a respective coupling surface 8, and the reflector sections 6 have a common coupling surface 10. This has an approximately 90° angle to the coupling surfaces 8. In other words, the coupling surface 10 is approximately perpendicular to the coupling surfaces 8.

[0040] The respective input coupling surfaces 8 are connected to the output coupling surface 10 by a respective reflection surface 12. The reflection surface 12 is approximately curved, and if another reflector section 6 is arranged adjacent to it in a direction in which the reflection surface 12 extends from the input coupling surface 8 to the output coupling surface 10, the reflection surface 12 overlaps the adjacent reflection surface 12 and the adjacent input coupling surface 8.

[0041] The reflective surface 12 can reflect the light of a respective LED 14, each of which is assigned to a reflector section 6. The reflective surfaces 12 are arranged such that the light of the LED 14 is reflected by the respective reflective surface 12 in the direction of the output surface 10. Furthermore, the reflective surface 12, which overlaps the input surface 8, also reflects the light of the LED 14 in the direction of the reflective surface 12 associated with the reflector section and / or toward the output surface 10. This is advantageous because the light of the LED 14 is thus not emitted directly in the direction of the output surface 10, but is essentially completely reflected by the assigned reflective surface 12 or by the adjacent reflective surface 12.

[0042] The respective LEDs 14 are arranged on respective LED circuit boards 16. These LED circuit boards 16 are arranged approximately parallel to the respective coupling surfaces 8. In other words, each LED 14 is arranged on its own LED circuit board 16. These are inserted between two adjacent reflector sections 6 in recesses that are delimited by the adjacent reflection surface 12 and the coupling surface 8 associated with the reflector section 6. In other words, the LED circuit boards 16 project into recesses in the reflector 4 that are delimited by the adjacent reflection surface 12 and the coupling surface. The LED circuit boards 16 are arranged on the circuit board 2. The circuit board 2 is perpendicular to the LED circuit boards 16. In a further embodiment, the LED circuit boards 16 can also be arranged at an angle other than 90° on the circuit board 2. In this way, various effects can be achieved.

[0043] In other words, a respective reflector section 6 is prong-shaped and by arranging several reflector sections 6 in a row, recesses are formed in the reflector 4 between the respective prongs, in which the LED circuit boards 16 with the LEDs 14 are arranged.

[0044] The optical arrangement can be arranged, for example, in a door panel or the like in a vehicle 17, which is indicated here by a dashed line.

[0045] In Fig. 2 shows a further optical arrangement 18 according to a second embodiment. As with the optical arrangement 1 of Fig. 1, the optical assembly 18 comprises a circuit board 20 on which LED circuit boards 22 are arranged vertically. Here, too, one LED circuit board 22 is provided per reflector section 24 of a reflector 26. The reflector 26 is constructed similarly to the reflector 4 of Fig. 1, however, he is in Fig. 2, unlike in Fig. 1, from the direction of the circuit board 2 Fig. 1. In other words, in Fig. 2 reflection surfaces 28 shown in a plan view.

[0046] The circuit board 20 is arranged perpendicular to a coupling-out surface, which is Fig. 2 is not shown because it is parallel to the reflection surfaces 28. In other words, the output surface is covered by the reflection surfaces 28 from this perspective. As in the optical arrangement 1, respective LEDs 30 are arranged on the LED circuit boards 22, which radiate into a coupling surface 32 of a respective reflector section 24.

[0047] In other words, the optical arrangement 18 is very similar to the optical arrangement 1, wherein the circuit boards 2, 20 with the LED circuit boards 16, 22 are arranged differently. In the embodiment shown in Fig. 1, the circuit board 2 is arranged parallel to the coupling-out surface 10 and in the second embodiment in Fig. 2, the circuit board 20 is arranged perpendicular to it. This means that the light is directed parallel to the circuit board 20 by the respective reflection surfaces 28.

[0048] In Fig. 3a shows a further embodiment of an optical arrangement 34. A reflector 36 is provided, as is the reflector 26 or the reflector 4 of the Fig. 1 and Fig. 2. This means that it has reflector sections 38 that are arranged in series and have a respective coupling surface 40. Furthermore, the reflector sections 38 have a common coupling-out surface 42, wherein the coupling surfaces 40 are arranged perpendicular to the coupling-out surface 42. Furthermore, a respective reflector section 38 has a reflection surface 44, which, like the reflection surface 12, overlaps the adjacent reflection surface 44 and the adjacent coupling surface 40. Furthermore, the reflector sections 38 are also designed in a prong-like manner, and the reflector 36 has a recess between a coupling surface 40 and a reflection surface 44. In this respective recess, as in Fig. 1, a respective LED 46 may be arranged.

[0049] The LEDs 46 are arranged on a common circuit board 48. So that the LEDs 46 can emit their light into the coupling surface 40, the circuit board 48 has a circuit board recess 50 for each reflector section 38, into which the prong-shaped reflector sections 38 can be inserted into the circuit board 48. In other words, the circuit board 48 partially encloses the reflector 36. The inclusion of the circuit board recess 50 in the circuit board 48 makes it possible to reduce the height of the optical arrangement 34, which extends from one end of the coupling surface 40 to the output surface 42.

[0050] In order for the LEDs 46 to couple their light into the coupling surface 40, they emit their light laterally, i.e. perpendicular to a mounting direction with which the LEDs are attached to the circuit board 48.

[0051] Fig. 3b is the circuit board 48 of the Fig. 3a is shown from a top view. It can be seen that the LEDs 46 are arranged at the edge of a respective circuit board recess 50 and adjacent to the respective circuit board recess 50. The prong-shaped reflector sections 38 are then inserted into the circuit board recess 50, which is shown here as square.

[0052] In Fig. 4 shows a reflector 52 which is similar to the reflector 4 of the Fig. 1 and / or the reflector 20 of the Fig. 2 and / or the reflector 36 of the Fig. 3a and Fig. 3b. The reflector 52 has various reflector sections 54 arranged in a row, one behind the other. To create a larger reflector and thus a larger optical arrangement, several of these rows of reflector sections 54 can also be arranged side by side.

[0053] The respective reflector sections have a coupling surface 56 into which light from LEDs 58 can be coupled. The LEDs 58 shown here can be arranged differently, as the various embodiments of the Fig. 1 to 3. The position of the LEDs 58 is shown here only as an example. The respective coupling surfaces 56 of the respective reflector sections 54 are connected to one another by respective reflection surfaces 60, which guide the light of the LEDs 58 toward the common output surface 62. The reflection surfaces 60 shown here extend in a curve from one coupling surface 56 to the coupling surface 56 of the adjacent reflector section 54. However, this shape can also be a free surface and / or any other shape.

[0054] In addition to the reflective surface 60, the reflector 52 can have side surfaces 64 that extend side by side from the input surface 56 to the output surface 62. Only one side surface 64 is shown in this figure, since the other is covered by the reflective surfaces 60 and the side surface 64. The side surfaces 64 can also be reflective surfaces that guide the light from the LEDs 58.

[0055] As in the Fig. 1 to 3, the respective coupling surfaces 56 of the respective reflector sections 54 are approximately perpendicular to the coupling-out surface 62. In other words, the light from the LEDs 58 can be deflected by the reflection surfaces 60. It then exits the coupling-out surface 62. Since the reflection surfaces 60 overlap, it is possible that the light from the LED 58 is not directed directly to the coupling-out surface 62, but rather first strikes the reflection surface 60 and / or the adjacent reflection surface 60 that overlaps the coupling surface 58 and is then directed to the coupling-out surface 62.

[0056] To the optical arrangement 1 of the Fig. 1, for example, the circuit board 2, the Fig. 1, be arranged parallel to the coupling-out surface 62.

[0057] To adjust the optical arrangement 18 of the Fig. 2, the circuit board 20 is arranged parallel to the side surfaces 64.

[0058] In Fig. 5 shows a circuit board 66 with two different LEDs. The first LED 58 can, for example, in the embodiment shown in Fig. 3. The LED 58 is attached to the circuit board 66 on one side and emits light in the direction of arrow 70, which is parallel to the extension direction of the circuit board 66. In other words, the LED 68 emits light in a direction perpendicular to the mounting direction on the circuit board 66. In other words, the LED 68 is a side-looker LED.

[0059] Another LED 72 is also connected to the circuit board 66 on one side and emits its light, as indicated by the case 74, in a direction perpendicular to the direction of extension of the circuit board 66. This LED can be used, for example, in the embodiments shown in Fig. 1 and Fig. 2. In other words, LED 72 is a front looker LED.

[0060] In Fig. 6a shows a reflector 76 having three reflector sections 78. The reflector 76 is designed essentially like the reflectors 4, 26, 36, and 52 of the previous figures. In other words, the reflector 76 has respective coupling surfaces 80 into which the light from a respective LED 82 can be coupled. Furthermore, the light is guided via reflection surfaces 84 to an output surface 86. The light is guided via the reflection surfaces 84 of the respective and the adjacent reflector section 78 before the light is output from the output surface 86.If a reflector section 78 does not have an adjacent reflector section 78 whose reflection surface 84 overlaps the coupling surface 80, the reflector section 78 therefore has a further reflection surface 88 which projects beyond or overlaps the coupling surface 80 of the reflector section 78 in such a way that the light from the LED first impinges on the further reflection surface 88 and / or on the reflection surface 84 before being output from the reflector 76. The light output from the output surface 86 then backlights a layer formed from an outer material 90. In other words, the layer formed from the outer material 90 closes the output surface 86. The outer material 90 is, in particular, transparent and / or translucent and / or diffuse.

[0061] In Fig.6b shows the reflector 76, which is now at a distance A from the layer formed from the outer material 90. In other words, the output surface 86 of the reflector 76 is arranged at a distance A from the outer material 90. This makes it possible for the light from the LED 82, which is directed by the reflective surfaces 84, 88, to not only backlight a surface behind which the reflector section 78 is arranged, but also backlight a surface behind which the reflector section 78 lying in the extension direction of the reflective surface 84 is arranged. In other words, crosstalk between the reflector sections 78 is thus possible, for example, when a color transition between reflector sections 78 is desired. LIST OF REFERENCE SYMBOLS 1, 18, 34 Optical arrangement 2, 20, 48, 66 circuit board 4, 26, 36, 52, 76 reflector 6, 24, 38, 54, 78 reflector section 8, 32, 40, 56, 80 coupling area 10, 42, 62, 86 output surface 12, 28, 44, 60, 84, 88 reflection surface 14, 30, 46, 68, 72, 82 LED 16, 22 LED circuit board 17 vehicles 50 PCB recess 64 side surfaces 70, 74 Arrow 90 upper material

Claims

[1] Optical arrangement with at least one reflector (4, 26, 36, 52, 76) and with at least one printed circuit board (2, 20, 48), wherein the reflector (4, 26, 36, 52, 76) has at least two reflector sections (6, 24, 38, 54, 78), each having at least one coupling-in surface (8, 32, 40, 56) and at least one coupling-out surface (10, 42, 62) for light, wherein light from at least one LED (14, 30, 46, 68, 72, 82) or a light source can be radiated into the respective reflector section (6, 24, 38, 54, 78) via the respective coupling-in surface (8, 32, 40, 56), wherein the LEDs (14, 30, 46, 68, 72, 82) or the light sources on the circuit board (2, 20, 48) are arranged and / or designed such that they emit light parallel to the direction of extension of the circuit board (2, 20, 48), wherein light coupled in via the coupling surface (8, 32, 40, 56) is guided in the respective reflector section (6, 24, 38, 54, 78) to the coupling-out surface (10, 42, 62),wherein the reflector sections (6, 24, 38, 54, 78) are arranged in series, wherein a respective LED (14, 30, 46, 68, 72, 82) or light source is assigned to a respective reflector section (6, 24, 38, 54, 78), wherein the reflector sections (6, 24, 38, 54, 78) each have at least one reflection surface (12, 28, 44, 84) in order to guide the light from the coupling-in surface to the coupling-out surface in the reflector section (6, 24, 38, 54, 78), and wherein a respective reflector section (6, 24, 38, 54, 78) is designed as a prong which extends from the respective reflection surface (12, 28, 44, 84), the respective coupling-in surface (8, 32, 40, 56) and the respective coupling-out surface (10, 42, 62), wherein by arranging several reflector sections (6) in the reflector (4) between the respective prongs, recesses are formed in which the respective LED (14, 30, 46, 68, 72, 82) or light source is arranged, wherein the respective reflector section (6, 24, 38, 54,78) in the form of the prong has two side surfaces (64) extending side by side from the coupling surface (8, 32, 40, 56) to the coupling surface (10, 42, 62), between which the respective reflection surface (12, 28, 44, 84) extends, wherein the side surfaces (64) are designed to be reflective, wherein a respective reflection surface (12, 28, 44, 84) overlaps at least the coupling surface (8, 32 40 56) of the adjacent reflector section (6, 24, 38, 54, 78) lying in the direction of extension, if a further reflector section (6, 24, 38, 54, 78) extends from the respective coupling surface (8, 32, 40, 56) in the direction of extension of the respective reflection surface (12, 28, 44, 84), and wherein the circuit board (2, 20, 48) has a circuit board recess (50) for a respective reflector section (6, 24, 38, 54, 78) designed as a prong, into which the respective prong dips or penetrates, such that the coupling surface (8, 32, 40, 56) is partially immersed in or penetrates the circuit board (2, 20, 48). [2] Optical arrangement according to claim 1, wherein at least in the case of one coupling surface (8, 32, 40, 56), a further reflection surface (86) extends from a coupling surface edge of the coupling surface (8, 32, 40, 56) extending adjacent to the coupling surface (10, 42, 62) towards the coupling surface (10, 42, 62). [3] Optical arrangement according to claim 1 or 2, wherein the reflector (4, 26, 36, 52, 76) is designed such that the light of the light source of a reflector section (6, 24, 38, 54, 78) can be guided substantially completely via the respective reflection surface (12, 28, 44, 84) and / or the adjacent reflection surface (12, 28, 44, 84) to the coupling-out surface (10, 42, 62). [4] Optical arrangement according to one of claims 1 to 3, wherein the coupling-out surfaces (10, 42, 62) of the respective reflector sections (6, 24, 38, 54, 78) are formed in a common plane. [5] Optical arrangement according to one of claims 1 to 4, wherein a reflection surface (12, 28, 44, 84) of a respective reflector section (6, 24, 38, 54, 78) is at least partially spanned between the coupling surfaces (8, 32, 40, 56) of two adjacent reflector sections (6, 24, 38, 54, 78). [6] Optical arrangement according to one of claims 1 to 5, wherein the coupling surface (8, 32, 40, 56) has a light entry opening which is delimited by the associated reflection surface (12, 28, 44, 84) and the associated reflection surface (12, 28, 44, 84) extends away from the light entry opening. [7] Optical arrangement according to one of claims 1 to 6, wherein a respective reflection surface (12, 28, 44, 84) extends along a curve from the associated coupling surface (8, 32, 40, 56) to the coupling-out surface (10, 42, 62). [8] Optical arrangement according to one of claims 1 to 7, wherein the respective coupling surface (8, 32, 40, 56) together with the adjacent reflection surface (12, 28, 44, 84) defines a concave recess in which the respective LED (14, 30, 46, 68, 72, 82) or light source is arranged. [9] Optical arrangement according to one of claims 1 to 8, wherein LED circuit boards (16, 22) for a respective reflector section (6, 24, 38, 54, 78) are arranged on the circuit board (2, 20, 48), on which at least one respective LED (14, 30, 46, 68, 72, 82) or light source is arranged, wherein the LED circuit boards (16, 22) project away from the circuit board (2, 20, 48) so that the light of the respective associated LED (14, 30, 46, 68, 72, 82) or light source can be radiated into the respective reflector section (6, 24, 38, 54, 78) via the respective coupling surface (8, 32, 40, 56) and / or on the circuit board (2, 20, 48) the respective LED (14, 30, 46, 68, 72, 82) or light source is arranged directly. [10] Optical arrangement according to one of claims 1 to 9, wherein rows of reflector sections (6, 24, 38, 54, 78) are arranged in parallel. [11] Vehicle with the optical arrangement (1, 18, 34) according to one of claims 1 to 10.

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