DE102019118978A1 - Optical arrangement and vehicle - Google Patents

Abstract

The invention discloses an optical arrangement which has at least one reflector and at least one circuit board. The reflector has at least two reflector sections which have a respective coupling-in surface and a, in particular common, coupling-out surface for light. The reflector sections are arranged in a row. Furthermore, the optical arrangement has at least one respective LED for at least one respective reflector section, the light of which can be emitted into the respective associated coupling-in area. Furthermore, the respective LEDs are arranged on the printed circuit board and / or designed in such a way that the light can be emitted parallel to the direction of extent of the printed circuit board. Furthermore, the coupling surfaces are also designed such that the light from the LEDs can be radiated into them. The light is guided through the reflector via the coupling-in surface to the coupling-out surface. The invention also discloses a vehicle with the optical arrangement.

Description

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.

In order to homogeneously illuminate surfaces that are covered or coated with a transparent, translucent or diffuse material (hereinafter referred to as "upper material") and that have only a small installation depth under the upper 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 area and thus to 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 upper material and thus to illuminate the surface homogeneously through the material. However, if RGB-LEDs (red, yellow, blue LEDs) are to be used, this is not possible, as chromatic aberration can occur due to the TIR lens and thus imaging errors can occur.

Another possibility to illuminate surfaces homogeneously through an upper material is to use an arrangement of LEDs in connection with light guides. This arrangement can also be designed in such a way that it can be arranged in an area with a small installation depth. In order to ensure homogeneous lighting with this arrangement, however, a large number of LEDs is necessary, since the installation depth is very small. In other words, the light from the LEDs cannot be sufficiently scattered over this short distance by the light guides.

The object of the present invention is to create a simple and cost-effective optical arrangement in terms of device technology, which enables homogeneous illumination of a surface and which requires a small installation space. Furthermore, it is an object of the invention to create a simple and inexpensive vehicle with this optical arrangement.

The object with regard to the optical arrangement is achieved by the features of claim 1 and with regard to the vehicle according to the features of claim 14.

Particularly advantageous configurations can be found in the dependent claims.

According to the invention, an optical arrangement is provided which has at least one reflector and at least one 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 several 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 surface of the reflector section. If several reflector sections are provided, each reflector section preferably has at least one LED. The LED is furthermore arranged on the circuit board and / or designed in such a way that the light emitted by the LED can be emitted parallel to the direction of extent of the circuit board. Furthermore, the coupling-in surfaces and thus the reflector section are designed and / or arranged such that the light from the LED can be radiated into the coupling-in surfaces. The light can then be guided from the coupling-in surface through the reflector to the coupling-out surface.

An advantage of the invention is that the LED, which is configured in such a way that the light is emitted parallel to the direction of extension of the circuit board and the coupling surface of the reflector section is also designed accordingly, the optical arrangement in a direction perpendicular to the direction of extension of the circuit board in particular can be trained small. In other words, the optical arrangement can be used, in particular, to illuminate surfaces which only have a small installation depth or installation depth for illumination. In particular, the optical arrangement is suitable for backlighting, that is to say for illuminating a surface through an upper material, which has only a small, in particular flat, installation space behind the material. The upper material is in particular transparent and / or translucent and / or diffuse. In addition, the optical arrangement can ensure homogeneous illumination of the, in particular backlit, surface, since the deflection of the light from the LED means that the path of the light from the coupling-in surface to the coupling-out surface is longer and the light is thus more regular. The longer path of the light is given in particular by the light being emitted by the LED in the direction of the extension direction and the subsequent deflection of the light by the reflector. Thus, 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 printed circuit board and thus directly in the direction of a coupling-out surface for the light and thus the surface that a conventional arrangement can illuminate is smaller.

The optical arrangement preferably has at least two reflector sections, which are preferably arranged in series.

Furthermore, it is advantageous if a respective reflector section has at least one respective reflective surface. The light from the LED can be guided by this from the coupling-in surface to the coupling-out surface.

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

The respective reflective surface of a respective reflector section preferably extends in such a way that it partially overlaps the adjacent reflective surface if there is a further reflector section in the respective reflection direction, starting from the respective coupling surface. In other words, a reflective surface preferably overlaps at least the coupling-in surface of a further reflector section and a part of the reflective surface thereof, in particular viewed from a direction perpendicular to the reflection direction. If no reflector section is provided adjacent to the reflector section opposite to the direction of extent of the reflective surface, the reflective surface of which can overlap the reflector section, a further reflective surface can be arranged above the coupling surface in order to convey the light that can be coupled into the coupling surface in the direction of the reflecting surface of the respective reflector section and / or to lead in the direction of the decoupling surface. This extends at a distance from the assigned reflection surface along a similar curve as the reflection surface. In other words, a geometry of the further reflective surface can correspond to a respective overlapping section of the reflective surface which overlaps the reflective surface of a further reflector section. The overlapping of the respective coupling surface and the respective reflective surface of an adjacent reflector section or through or the further reflective surface can prevent the light from the LED that radiates into the coupling surface from emitting directly to the coupling surface and thus the beam path of the light between the coupling surface and the coupling surface becomes larger . This is advantageous because a high contrast can be generated between the individual reflector sections and the illumination of the backlit surface is more regular. Depending on how much the coupling surface is overlapped or the more the further 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 thus be prevented if this is desired for the application. This is advantageous if, for example, a pattern is to be generated with an optical arrangement that has a plurality of reflector sections. This pattern can thus have a high contrast and, if, for example, writing is to be generated with the optical arrangement in which different LEDs of different reflector sections are switched on or off, this can be seen particularly clearly. Another advantage of the fact that the light from the LED is not emitted directly to the coupling-out surface, but preferably completely hits the reflection surface, is that a light image is more homogeneous and more regular, since the light, preferably completely, is scattered and reflected in a controlled manner.

Furthermore, it is advantageous if the light from the light source of a reflector section can be guided from the coupling surface to the coupling-out surface essentially completely over the respective associated reflection surface and / or over the reflection surface, which partially overlaps the associated coupling-in 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 less. In other words, the light from the light source does not scatter in an uncontrolled manner, but is guided in a controlled manner over the reflection surface. This also has the advantage that the illumination of the surface and / or the backlighting of the surface is homogeneous.

Furthermore, in addition to the respective reflection surface and / or the adjacent reflection surface, the coupling-in surface is delimited by two side surfaces extending side by side from the coupling-in 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, that is to say can be designed to be reflective. This is advantageous since a particularly good degree of efficiency of the optical arrangement can be achieved in this way. Furthermore, the delimitation of the reflector sections by the side surfaces increases the contrast 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 perpendicularly or parallel to the circuit board.

In addition, it can also be advantageous that the light from neighboring Reflector sections, which are arranged in a row, mixes in order to produce 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 coupling-out surface and the upper material, which the optical arrangement can backlight. In other words, a distance can be provided between the coupling-out surface of the reflector and / or between parts of the coupling-out surface of the reflector and a layer which backlit the optical arrangement. If several rows of reflector sections are arranged next to one another, the side surfaces can extend to the upper material, since it is thus possible to maintain the contrast between the rows. In other words, the side surfaces protrude beyond the coupling-out surface in the direction of the upper material. Light mixing is thus 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 have the same or a different distance from the upper material as the coupling-out surface.

The selection of the upper material also has a strong influence on the mixing of light between the reflector sections.

Furthermore, it is advantageous if the coupling-out surfaces of the respective reflector sections are formed in a common plane. In other words, the coupling-out surface of the optical arrangement can be a surface which is arranged, for example, parallel to the circuit board. If the decoupling 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 approx. 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, the required installation depth for the optical arrangement of, for example, 6 to 8 millimeters can thus be achieved. That is, by deflecting the light, a thickness, that is to say an extension of the optical arrangement in a direction perpendicular to the printed circuit board, can be reduced in comparison with conventional arrangements. Another advantage that the decoupling surfaces are formed in a common plane is that the light from the optical arrangement is thus clearly visible to a viewer. If the optical arrangement is arranged, for example, in a car, for example in a car door, in a headliner or in a side panel of the interior, behind a fabric panel, the coupling surface can emulate the shape of this panel and the optical arrangement can backlight a surface.

Furthermore, the coupling surface preferably has a light inlet opening which is delimited both by the reflection surface and by the adjacent reflection surface if a further reflector section extends in the direction of the respective reflection direction starting from the respective coupling surface. The respective assigned reflection surface preferably extends away from the light inlet opening. This is advantageous because the light that enters the light inlet opening can thus be guided by the reflection surface.

The respective reflection surface of a respective reflector section preferably extends from an associated coupling-in surface to the coupling-out surface. A 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 designed such that a shape of a respective reflector section is concave, for example. The reflection surface can also be designed to be parabolic and / or elliptical and / or as a free form.

Furthermore, it is advantageous if a respective reflector section is designed at least in sections as prongs. 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 immersed. In other words, the coupling surface and / or the reflective surface can be submerged in and / or through the circuit board in sections. This has the advantage that the light from the LED can enter the coupling surface or the light inlet opening of the respective reflector section preferably in the center or at a desired position when the LED of a respective reflector section is arranged on the circuit board. Furthermore, it is possible that the optical arrangement can thus have an even smaller thickness, that is to say a smaller extension perpendicular to the extension direction of the printed circuit board, and can thus be integrated in installation spaces that have a particularly small installation depth. The thickness of the optical arrangement can thus be, for example, only a few millimeters, for example 3 to 8 mm.

In a further embodiment, on the circuit board for a respective Reflector section can be arranged at least one respective LED circuit board. At least one respective LED can be arranged on this. The LED circuit board is arranged on the circuit board in such a way that it projects away from it, 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 which emit the light perpendicular to a mounting direction of the LED, that is to say 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 terms of device technology, the LED circuit boards can thus be arranged in a simple manner in such a way that the light from the respective LED can be coupled into the respective coupling surface. Alternatively, the circuit board can also be arranged approximately parallel to the side surfaces. This also makes it possible for the light from the LED to be easily coupled into the respective coupling surface.

Another possibility is to attach LEDs directly to the circuit board. So that they can emit their light parallel to the direction of extension of the circuit board, they are preferably side looker LEDs.

It is also advantageous if the optical arrangement contains a multiplicity of reflector sections, it being possible for these to be arranged in a row, the row preferably extending in a reflection direction of the reflection surface. Furthermore, rows of reflector sections can be arranged in parallel and thus produce any large area of reflector sections. In other words, the size of the optical arrangement can be adapted flexibly and, for example, ambient conditions can be adapted.

A plurality of LEDs and / or one RGB LED (red, yellow, blue LEDs) can preferably 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 that different or parts of the reflector sections have RGB LEDs or one type of lighting means and other or another part of the reflector sections have white LEDs or another type of lighting means. Additionally or alternatively, the reflector sections can have both white and colored LEDs.

In addition, the optical arrangement can contain a computation element and / or be connected to a computation element via corresponding means, which, for example, can control the LEDs of the various reflector sections. The computing element can, for example, have stored images and / or video frequencies so that, for example, different texts and / or films can be shown to a viewer of the optical arrangement.

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

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, different effects can be achieved by varying the shapes and / or heights. For example, a reflective surface of a 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 of the adjacent other reflector section can then be switched on.

The reflector can be made of metal, for example. Alternatively, the reflector can also be made of plastic or synthetic material, which is preferably coated. Thus, the reflector can easily be manufactured by injection molding and is also particularly inexpensive and light.

The reflector surface of a reflector section, that is to say the reflective surface and / or the side surfaces, can be smooth and / or matt and / or provided with facets and / or have other optical structures. The reflector surface of different reflector sections of the optical arrangement can be designed differently.

Furthermore, the LED of a respective reflector section is positioned in such a way that the light from the LED can easily be coupled into the light inlet opening. In other words, the LED of a respective reflector section preferably has only a small distance from the coupling surface or rests against it.

Furthermore, the coupling surface can be approximately perpendicular to the beam path of the light Be LED. Alternatively, this angle can also be changed so that different effects can be created.

Furthermore, a respective coupling-in surface can have an angle of approximately 90 ° to the coupling-out surface. Alternatively, this angle can also be changed. Depending on the angle of the coupling-in surface of a reflector section with the coupling-out surface, different lighting effects can be generated.

A light-emitting diode (LED) or light-emitting diode can be in the form of at least one individually housed LED or in the form of at least one LED chip that has one or more light-emitting diodes, or in the form of a micro-LED or a nano-LED (Smart Dust), exist. Several LED chips can be mounted on a common substrate ("submount") and form an LED, or they can be attached individually or jointly to a circuit board (e.g. FR4, metal core circuit board, etc.) ("CoB" = chip on board). The at least one LED can be equipped with at least one separate and / or common 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 or InGaN or AlInGaP, organic LEDs (OLEDs, e.g. polymer OLEDs) can generally also be used. The LED chips can be directly emitting or have an upstream phosphor. Alternatively, the light-emitting component can be a laser diode or a laser diode arrangement. It is also conceivable to provide an OLED luminous layer or a plurality of OLED luminous layers or an OLED luminous area. 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, implemented for example by a blue emitter and a yellow / green converter.

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 or a water-based vehicle or a land-based vehicle. The land-based vehicle can be a motor vehicle or a rail vehicle or a bicycle. The vehicle is particularly preferably a truck or a passenger car or a motorcycle. The vehicle can also be designed as a non-autonomous or partially autonomous or autonomous vehicle.

• 1 eine schematische Darstellung einer optischen Anordnung gemäß einem ersten Ausführungsbeispiel, wobei ein Reflektor und eine Leiterplatte im Längsschnitt gezeigt sind,
• 2 eine schematische Darstellung einer optischen Anordnung gemäß einem zweiten Ausführungsbeispiel, wobei ein Reflektor parallel zu seiner Erstreckungsrichtung und eine Leiterplatte im Längsschritt gezeigt sind,
• 3a und 3b schematische Darstellungen einer optischen Anordnung gemäß einem weiteren Ausführungsbeispiel,
• 4 eine perspektivische Darstellung eines Reflektors gemäß einem Ausführungsbeispiel,
• 5 eine schematische Darstellung von verschiedenen LEDs, und
• 6a und 6b eine schematische Schnittdarstellung eines Reflektors mit einem Obermaterial.

In the following, the invention is to be explained in more detail on the basis of exemplary embodiments. The figures show:

• 1 a schematic representation of an optical arrangement according to a first embodiment, wherein a reflector and a circuit board are shown in longitudinal section,
• 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 in longitudinal step,
• 3a and 3b schematic representations of an optical arrangement according to a further exemplary embodiment,
• 4th a perspective view of a reflector according to an embodiment,
• 5 a schematic representation of various LEDs, and
• 6a and 6b a schematic sectional view of a reflector with an upper material.

In 1 is an optical arrangement 1 with a circuit board 2 and a reflector 4th shown. This has several reflector sections 6th that are arranged in series one behind the other.

A respective reflector section 6th has a respective coupling surface 8th and the reflector sections 6th have a common decoupling surface 10 . This has an approximately 90 ° angle to the coupling surfaces 8th on. In other words, it is the coupling-out area 10 approximately perpendicular to the coupling surfaces 8th .

The respective coupling surfaces 8th are through a respective reflective surface 12 with the decoupling surface 10 connected. The reflection surface 12 is approximately curved and if in a direction in which the reflection surface 12 from the coupling surface 8th to the coupling-out surface 10 extends another reflector section 6th is arranged adjacent, the reflection surface overlaps 12 the neighboring reflective surface 12 and the adjacent coupling surface 8th .

The reflection surface 12 can the light of a respective LED 14th , each with a reflector section 6th is assigned, reflect. The reflection surfaces 12 are arranged in such a way that the light from the LED 14th from the respective reflection surface 12 in the direction of the decoupling surface 10 is reflected. Furthermore, also reflects the Reflective surface 12 , which is the coupling area 8th overlaps, the light of the LED 14th in the direction of the reflection surface belonging to the reflector section 12 and / or to the coupling-out surface 10 . This is advantageous because it allows the light from the LED 14th not directly in the direction of the decoupling surface 10 is emitted, but essentially completely through the associated reflection surface 12 or through the adjacent reflective surface 12 is reflected.

The respective LED 14th are on the respective LED circuit boards 16 arranged. These LED circuit boards 16 are approximately parallel to the respective coupling surfaces 8th arranged. In other words, every LED is 14th on its own LED circuit board 16 arranged. These are between two adjacent reflector sections 6th used in recesses that of the adjacent reflective surface 12 and that to the reflector section 6th associated coupling area 8th are limited. In other words, the LED circuit boards are jutting out 16 in recesses in the reflector 4th from the adjacent reflective surface 12 and the coupling area are limited. The LED circuit boards 16 are on the circuit board 2 arranged. The circuit board 2 is perpendicular to the LED circuit boards 16 . In a further embodiment, the LED circuit boards 16 also with an angle other than 90 ° on the circuit board 2 be arranged. Different effects can be achieved in this way.

In other words, is a respective reflector section 6th Is formed like a prong and by stringing together several reflector sections 6th are in the reflector 4th Recesses formed between the respective prongs in which the LED circuit boards 16 with the LEDs 14th are arranged.

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

In 2 is another optical arrangement 18th shown according to a second embodiment. As is the optical arrangement 1 the 1 shows the optical arrangement 18th a circuit board 20th on, on the LED circuit boards 22nd are arranged vertically. Here, too, is per reflector section 24 a reflector 26th an LED circuit board 22nd intended. The reflector 26th has a similar structure to the reflector 4th the 1 , however, he is in 2 , different from in 1 , from the direction of the circuit board 2 out 1 shown. In other words, in 2 Reflective surfaces 28 shown in a top view.

The circuit board 20th is arranged perpendicular to a decoupling surface, which in 2 is not shown because it is parallel to the reflection surfaces 28 is. In other words, the coupling-out surface is from the reflection surfaces 28 covered from this point of view. As in the optical arrangement 1 are on the LED circuit boards 22nd respective LEDs 30th arranged in a coupling surface 32 of a respective reflector section 24 irradiate.

In other words is the optical arrangement 18th very similar to the optical arrangement 1 , with the circuit boards 2 , 20th with the LED circuit boards 16 , 22nd are each arranged differently. In the embodiment that in 1 shown is the circuit board 2 parallel to the decoupling surface 10 arranged and in the second embodiment in 2 , is the circuit board 20th arranged perpendicular to it. That is, the light is through the respective reflection surfaces 28 parallel to the circuit board 20th steered.

In 3a Figure 3 is another embodiment of an optical arrangement 34 shown. A reflector 36 is included as well as the reflector 26th or the reflector 4th the 1 and 2 educated. That means it has reflector sections 38 , which are arranged in series and a respective coupling surface 40 exhibit. Furthermore, the reflector sections 38 a common decoupling surface 42 on, the coupling surfaces 40 perpendicular to the coupling-out surface 42 are arranged. Furthermore, a respective reflector section 38 a reflection surface 44 on that as well as the reflection surface 12 the neighboring reflective surface 44 and the adjacent coupling surface 40 overlaps. Furthermore, there are also the reflector sections 38 designed prong-shaped and the reflector 36 each has between a coupling surface 40 and a reflection surface 44 a recess. In this respective recess, as in 1 , a respective LED 46 be arranged.

The LEDs 46 are on a common circuit board 48 arranged. So that the LEDs 46 their light into the coupling surface 40 can emit, shows the circuit board 48 for each reflector section 38 a PCB recess 50 on, in which the prong-shaped reflector sections 38 into the circuit board 48 can be admitted. In other words, the circuit board comprises 48 the reflector 36 partially. By doing that in the circuit board 48 the PCB recess 50 are, it is possible to adjust the height of the optical arrangement 34 extending from one end of the coupling surface 40 up to the decoupling surface 42 extended, decreased.

So that the LEDs 46 their light into the coupling surface 40 can couple, they emit their light laterally, that is, perpendicular to a mounting direction with which the LEDs on the circuit board 48 are attached.

3b is the circuit board 48 the 3a shown from a top view. It can be seen that the LEDs 46 at the edge of a respective and adjacent to the respective circuit board recess 50 are arranged. In the printed circuit board recess shown here as a square 50 then the prong-shaped reflector sections 38 brought in.

In 4th is a reflector 52 shown, which is similar to the reflector 4th the 1 and / or the reflector 20th the 2 and / or the reflector 36 the 3a and 3b is designed. The reflector 52 has different reflector sections 54 which are arranged in series one behind the other. In order to produce a larger reflector and thus a larger optical arrangement, several of these rows of reflector sections can also be used 54 be arranged side by side.

The respective reflector sections have a coupling surface 56 on, into which light from LEDs 58 can couple. The LEDs 58 shown here can be arranged differently, like the various exemplary embodiments of FIG 1 to 3 demonstrate. 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 through respective reflective surfaces 60 connected to one another, with these the light of the LEDs 58 in the direction of the common decoupling surface 62 conduct.

The reflection surfaces shown here 60 extend in a curve from a 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.

Next to the reflection surface 60 can the reflector 52 Side faces 64 have, which are side by side from the coupling surface 56 to the decoupling surface 62 extend. Here in this picture is only one side face 64 shown as the other through the reflective surfaces 60 and the side face 64 is covered. The side faces 64 can also be reflective surfaces that guide the light from the LEDs 58.

As in the 1 to 3 shown are the respective coupling surfaces 56 of the respective reflector sections 54 approximately perpendicular to the decoupling surface 62 . In other words, the light from the LEDs 58 can pass through the reflective surfaces 60 be diverted. Then it emerges from the decoupling surface 62 out. Since the reflection surfaces 60 overlap, it is possible that the light from the LED 58 does not go directly to the coupling-out surface 62 is steered, but first on the reflection surface 60 and / or on the adjacent reflective surface 60 which overlaps the coupling-in surface 58 and then to the coupling-out surface 62 is steered.

About the optical arrangement 1 the 1 to form, for example, the circuit board 2 , the 1 , parallel to the decoupling surface 62 be arranged.

About the optical arrangement 18th the 2 will form the circuit board 20th parallel to the side surfaces 64 arranged.

In 5 is a printed circuit board 66 shown with two different LEDs. The first LED 58 can, for example, in the exemplary embodiment shown in FIG 3 shown can be used. The LED 58 is on one side of the circuit board 66 attaches and emits light in the direction of the arrow 70 that is parallel to the direction of extension of the circuit board 66 is. In other words, the LED is emitting 68 Light in a direction perpendicular to the mounting direction on the circuit board 66 . In other words is the LED 68 a side looker LED.

Another LED 72 is also on the same side as the PCB 66 connected and emits its light, as if by the fall 74 indicated in a direction perpendicular to the direction of extension of the circuit board 66 . This LED can be used, for example, in the exemplary embodiments shown in FIG 1 and 2 are. In other words is the LED 72 a front looker LED.

In 6a is a reflector 76 shown, the three reflector sections 78 having. The reflector 76 , is essentially corresponding to the reflectors 4th , 26th , 36 and 52 of the previous figures. In other words, the reflector has 76 respective coupling surfaces 80 on, in which the light of a respective LED 82 can be coupled. In addition, the light is emitted via reflective surfaces 84 to a decoupling surface 86 guided. The light is transmitted through the reflective surfaces 84 of the respective and the adjacent reflector section 78 led, before, the light from the decoupling surface 86 decoupled. Has a reflector section 78 no adjacent reflector section 78 on, its reflective surface 84 the coupling area 80 overlaps, the reflector section 78 for this reason another reflective surface 88 on which the coupling surface 80 of the reflector section 78 so that the light of the LED protrudes or overlaps first on the further reflection surface 88 hits and / or on the reflective surface 84 before it comes out of the reflector 76 decoupled. That from the coupling area 86 outcoupled light, then backlit a layer that consists of an upper material 90 is formed. In other words, the layer that seals off the upper material 90 is formed, the coupling-out surface 86 . The upper 90 is in particular transparent and / or translucent and / or diffuse.

In 6b is the reflector 76 shown that to the layer that made up the upper 90 is formed, now has a distance A. In other words, it is the coupling-out area 86 of the reflector 76 with a distance A to the upper material 90 arranged. This makes it possible for the light to come from the LED 82 that of the reflective surfaces 84 , 88 is steered, not only a surface is backlit behind which the reflector section 78 is arranged, but also a surface is backlit, behind which the in the direction of extent of the reflection surface 84 lying reflector section 78 is arranged. In other words, there is crosstalk between the reflector sections 78 possible, for example if there is a color transition between reflector sections 78 is desirable.

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

Decoupling surface

12, 28, 44, 60, 84, 88

Reflective surface

14, 30, 46, 68, 72, 82

LED

16, 22

LED circuit board

17th

vehicle

50

PCB recess

64

Side faces

70, 74

arrow

90

Upper material

Claims (15)

Optical arrangement with at least one reflector (4, 26, 36, 52, 76) and with at least one printed circuit board (2, 20, 48), the reflector (4, 26, 36, 52, 76) having at least one reflector section (6, 24, 38, 54, 78), which has at least one coupling surface (8, 32, 40, 56) and at least one coupling surface (10, 42, 62) for light, characterized in that a coupling surface (8, 32, 40, 56) light from at least one LED (14, 30, 46, 68, 72, 82) or a light source can be irradiated, the LED (14, 30, 46, 68, 72, 82) or the light source on the circuit board (2, 20, 48) is arranged and / or designed in such a way that it emits light parallel to the direction of extension of the circuit board (2, 20, 48), and the coupling surface (8, 32, 40, 56) is designed and arranged in such a way that the light of the LED (14, 30, 46, 68, 72, 82) or light source can be radiated into this, with light coupled in via the coupling surface (8, 32, 40, 56) via the reflector ktor (4, 26, 36, 52, 76) is guided to the decoupling surface (10, 42, 62). Optical arrangement according to Claim 1 , wherein this has at least two reflector sections (6, 24, 38, 54, 78) which are arranged in series, with a respective reflector section (6, 24, 38, 54, 78) a respective LED (14, 30, 46, 68, 72, 82) or light source and is assigned and a respective reflector section (6, 24, 38, 54, 78) has a respective coupling surface (8, 32 40 56). Optical arrangement according to one Claim 1 or 2 , wherein the reflector sections (6, 24, 38, 54, 78) each have at least one reflective surface (12, 28, 44, 90, 84). Optical arrangement according to Claim 3 , wherein a respective reflective surface (12, 28, 44, 90, 84), if in the direction of extent of the respective reflective surface (12, 28, 44, 90, 84) starting from the respective coupling surface (8, 32, 40, 56) further reflector section (6, 24, 38, 54, 78) which 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 and / or at least at a coupling-in surface (8, 32, 40, 56) extends from a coupling-in surface edge of the coupling-in surface (8, 32, 40, 56) that extends adjacent to the coupling-out surface (10, 42, 62), another reflection surface (86) extends to the coupling-out surface (10, 42, 62). Optical arrangement according to Claim 3 or 4th , the reflector (4, 26, 36, 52, 76) being designed in such a way that the light from the light source of a reflector section (6, 24, 38, 54, 78) is essentially completely over the respective reflection surface (12, 28, 44 , 90, 84) and / or the adjacent reflection surface (12, 28, 44, 90, 84) can be guided to the decoupling surface (10, 42, 62). Optical arrangement according to one of the Claims 1 to 5 , the decoupling surfaces (10, 42, 62) of the respective reflector sections (6, 24, 38, 54, 78) being formed in a common plane. Optical arrangement according to one of the Claims 3 to 6th , wherein a reflection surface (12, 28, 44, 90, 84) of a respective reflector section (6, 24, 38, 54, 78) at least partially between the coupling surfaces (8, 32, 40, 56) of two adjacent reflector sections (6, 24, 38, 54, 78) is stretched. Optical arrangement according to one of the Claims 3 to 7th , wherein the coupling surface (8, 32, 40, 56) has a light inlet opening which is delimited by the associated reflection surface (12, 28, 44, 90, 84) and the associated reflection surface (12, 28, 44, 90, 84) extends away from the light inlet opening. Optical arrangement according to one of the Claims 3 to 8th , wherein the respective reflector section (6, 24, 38, 54, 78) has two side surfaces extending next to one another from the coupling-in surface (8, 32, 40, 56) to the coupling-out surface (10, 42, 62), between which the respective reflection surface extends (12, 28, 44, 90, 84). Optical arrangement according to one of the Claims 3 to 9 , wherein a respective reflection surface (12, 28, 44, 90, 84) extends along a curve from the associated coupling-in surface (8, 32, 40, 56) to the coupling-out surface (10, 42, 62). Optical arrangement according to one of the Claims 3 to 10 , the respective coupling surface (8, 32, 40, 56) together with the adjacent reflective surface (12, 28, 44, 90, 84) delimiting a concave recess in which the respective LED (14, 30, 46, 68, 72 , 82) or light source is arranged. Optical arrangement according to one of the Claims 1 to 11 , wherein a respective reflector section (6, 24, 38, 54, 78) is designed in sections as prongs, the circuit board (2, 20, 48) for a respective reflector section (6, 24, 38, 54, 78) having a circuit board recess ( 50) into which the respective prong dips or penetrates, in such a way that the coupling surface (8, 32, 40, 56) is dipped into or through the printed circuit board (2, 20, 48) in sections. Optical arrangement according to one of the Claims 1 to 12 , LED circuit boards (16, 22) for a respective reflector section (6, 24, 38, 54, 78) being arranged on the printed circuit board (2, 20, 48), on which at least one respective LED (14, 30, 46 , 68, 72, 82) or light source is arranged, the LED circuit boards (16, 22) projecting 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 in 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) which respective LED (14, 30, 46, 68, 72, 82) or light source is arranged directly. Optical arrangement according to one of the Claims 1 to 13 wherein rows of reflector sections (6, 24, 38, 54, 78) are arranged in parallel. Vehicle with the optical arrangement (1, 18, 34) according to one of the Claims 1 to 14th .

Images