Compact lighting assembly

Abstract

The invention relates to a lighting arrangement comprising at least four light sources (1.1, 1.2, 1.3, 1.4, 1.5) and at least one first optical element arrangement (2) and a second optical element arrangement (3), wherein the first optical element arrangement (2) comprises at least two first optical elements (2.1, 2.2) and the second optical element arrangement comprises at least two second optical elements (3.1, 3.2, 3.3), wherein each optical element (2.1, 2.2, 3.1, 3.2, 3.3) is assigned to one of the light sources (1.1, 1.2, 1.3, 1.4, 1.5) and is arranged on it in such a way that light emitted from the light source (1.1, 1.2, 1.3, 1.4, 1.5) can be coupled into a light coupling section of the optical element (2.1, 2.2, 3.1, 3.2, 3.3). and can be coupled out from a light output coupling section of the optical element (2.1, 2.2, 3.1, 3.2, 3.3), which is spaced apart from the light input coupling section, according to its optical properties, wherein the first optical elements (2.1, 2.2) differ in their optical properties from the second optical elements (3.1, 3.2, 3.3), wherein the first optical elements (2.1, 2.2) are arranged and designed such that they horizontally delimit a first receiving volume (4) arranged between their outer surfaces, and wherein the first optical elements (2.1, 2.2) and the second optical elements (3.1, 3.2, 3.3) are arranged relative to each other such that at least one second optical element (3.1, 3.2, 3.3) engages vertically in the first receiving volume (4). (Fig. 1a).

Description

[0001] The invention relates to a lighting arrangement according to the preamble of claim 1 and to a light fixture with such a lighting arrangement.

[0002] Lighting arrangements regularly incorporate light sources such as LEDs. LEDs have the characteristic of emitting light as point light sources. However, such a point light source emission characteristic is often undesirable. It is known from the prior art to additionally provide an optical element arrangement with several optical elements, wherein each light source is assigned at least one optical element. An optical element is arranged on a light source such that light emitted by the light source can be coupled into, or is coupled into, a light coupling section of the optical element. The light is directed within the optical element according to its optical properties, and can be coupled out of, or is coupled out of, a light coupling section that is spaced apart from the light coupling section, in particular at least partially vertically spaced.In this way, the optical elements can be used to influence, among other things, the light distribution and beam angle, and to define the beam characteristics of the lighting arrangement. Furthermore, to increase the overall luminous efficacy of the lighting arrangement or to improve its light distribution, several light sources can be arranged side by side in a so-called array. It is common practice to arrange a number of optical elements corresponding to the number of light sources side by side in a single plane within the array, ensuring that at least one optical element is assigned to each light source.

[0003] However, the maximum packing density of the light sources—that is, the number of light sources that can be arranged side by side in a plane, particularly a horizontal one, per unit area—and thus also the total luminous flux of a given area, is limited, among other things, by the optical elements. Their design is not entirely unrestricted; they must have specific geometries and dimensions to achieve the desired light distribution of the light emitted by the respective optical element and passing through it, and thus provide the desired beam pattern of the lighting arrangement. Therefore, the size of the optical elements cannot be arbitrarily reduced to increase the packing density.Regarding illumination quality, a further problem is that the refractive index at the interface between the light output coupling section of the optical element and, for example, air, is wavelength-dependent. This means that light of different wavelengths is refracted to varying degrees (so-called chromatic aberration). This effect is undesirable because it causes, for example, white light to be at least partially split into its individual components by the optical element, and a colored fringe can appear in the emission arrangement of the light source and optical element.

[0004] The present invention is therefore based on the objective of providing a lighting arrangement or a luminaire which eliminates at least one disadvantage of generic lighting arrangements or luminaires.

[0005] As a solution to the problem underlying the present invention, the invention proposes a lighting arrangement with the features according to claim 1. The lighting arrangement according to the invention extends in a longitudinal direction and in a transverse direction perpendicular to this longitudinal direction, as well as in a vertical direction perpendicular to the longitudinal and transverse directions. Furthermore, the lighting arrangement comprises at least four light sources arranged horizontally side by side. In particular, the light sources are arranged horizontally side by side in a plane. In addition, the lighting arrangement comprises at least a first optical element arrangement with at least two first optical elements and a second optical element arrangement with at least two second optical elements. In particular, the total number of optical elements corresponds to the number of light sources provided in the lighting arrangement.Preferably, each optical element is assigned exactly one light source, and each light source is assigned exactly one optical element. A light source can, in particular, comprise at least one LED, especially exactly one LED, or a pair of LEDs, for example, a cool white light-emitting LED and a warm white light-emitting LED, or three LEDs, each emitting light of a different color and whose mixed light is white light, for example, configured as a three-LED RGB arrangement. This can, in particular, apply to all light sources of the luminaire. The first and second optical element arrangements do not necessarily have to have the same number of optical elements. For example, it is conceivable that the first optical element arrangement has an even number of optical elements, while the second optical element arrangement has an odd number of optical elements, or vice versa.Each optical element is assigned to one of the light sources, with each light source having at least one optical element assigned to it. The optical elements have a light-in coupling section for coupling in the light emitted by the light sources and a light-out coupling section for coupling out the light. The light is directed through the optical elements according to their optical properties, with the first optical elements differing in their optical properties from the second optical elements. Thus, the first and second optical elements differ in their light-directing properties.When the same light source is arranged at the light coupling section of a first optical element on one side and at the light coupling section of a second optical element on the other, the light emitted by the light source is directed through the respective optical element in different ways and thus its beam path is influenced when it passes through the respective optical element from its respective light coupling section to its respective light output section and is emitted from there into an environment of the lighting arrangement.The different optical properties can be caused, for example, by different geometries of the optical elements, such as different geometric designs of the light coupling sections, the light coupling sections and / or the outer surfaces running between them that bound the body of the respective optical element, and / or by different materials with, for example, different refractive indices, from which the different optical elements are made.

[0006] The first and second optical elements each have outer surfaces that form their outer boundaries. These outer surfaces extend from the lower vertical end to the upper vertical end, such that the horizontal extent of each optical element over its entire height, i.e., along its entire length in the vertical direction, is bounded and thus defined by its outer surface. The first optical elements are arranged and configured to horizontally bound a first receiving volume located between their outer surfaces. Additionally or alternatively, the second optical elements are arranged and configured to horizontally bound a second receiving volume located between their outer surfaces.A horizontal limitation of the recording volume by the outer surfaces of optical elements means that the optical elements extend over the same vertical extent, spaced apart from each other along a first horizontal direction, and, within the vertical extent, are oriented opposite each other with respect to the first horizontal direction along a second horizontal direction perpendicular to the first. The recording volume is, on the one hand, defined by the vertical extent length, i.e.,The height of the vertical extension section is defined, on the one hand, by the distance along the first horizontal direction and, on the other hand, by the maximum distance along the second horizontal direction within the vertical extension section, over which the optical elements within the vertical extension section are positioned opposite each other along the first horizontal direction. For example, the first horizontal direction can be the longitudinal direction and the second horizontal direction the transverse direction. The recording volume is limited both vertically and horizontally to such a region over which the optical elements, whose outer surfaces define the recording volume, extend with their horizontal and vertical dimensions.Since the receiving volume is limited by the outer surfaces of the optical elements, its vertical extent is in any case no greater than the maximum height of the smallest optical element limiting the receiving volume. The maximum vertical height of an optical element is the vertical distance between a lower horizontal plane passing through the lowest point of the optical element (with respect to the vertical direction) and an upper horizontal plane passing through the highest point of the optical element (with respect to the vertical direction). In particular, the receiving volume can form an open space that is open in the transverse direction and / or in the vertical direction and / or in at least one intermediate direction. This means that while the receiving volume is limited in this direction according to the aforementioned definition, it is not completely enclosed by the respective optical elements whose outer surfaces limit the receiving volume.

[0007] According to the invention, the first and second optical elements are arranged relative to each other such that at least one first optical element engages vertically into the second receiving volume and / or at least one second optical element engages vertically into the first receiving volume. The use of a first optical element arrangement and a second optical element arrangement has the advantage that the receiving volume, which is typically present between two optical elements in lighting arrangements known from the prior art, is no longer unused. By vertically engaging at least one first optical element and / or at least one second optical element into the second receiving volume or into the first receiving volume, the receiving volume is at least partially filled with an additional optical element, thereby achieving improved volume utilization and a particularly high packing density.By increasing the packing density, the abiotic depletion potential of the luminaire arrangement according to the invention can also be advantageously reduced, since less material is required overall for the same or higher total light output. Furthermore, the first and second optical elements can be arranged relative to each other such that they overlap horizontally, at least partially. Preferably, a first optical element extends within a second receiving volume bounded by the outer surfaces of second optical elements over the same vertical section and over the same section along a specific horizontal direction, over which the second optical elements also extend. The second optical elements are spaced apart from each other along a direction perpendicular to the specific horizontal direction, and the first optical element is arranged between the second optical elements with respect to this horizontal direction.Preferably, the first optical element extends at at least one specific vertical position within the aforementioned vertical section along the specified horizontal direction over at least 10%, in particular at least 20%, and in particular at least 30% of the extension length of the two second optical elements along the specified horizontal direction at this specific vertical position. Preferably, a second optical element extends within a first receiving volume bounded by the outer surfaces of the first optical elements over the same vertical section and over the same section along a specified horizontal direction, over which the first optical elements also extend, wherein the first optical elements are spaced apart from each other along a direction perpendicular to the specified horizontal direction, and the second optical element is arranged between the first optical elements with respect to this horizontal direction.Preferably, the second optical element extends at at least one specific vertical position within the aforementioned vertical section along the specified horizontal direction over at least 10%, in particular at least 20%, and in particular at least 30% of the extension length of the two first optical elements along the specified horizontal direction at this specific vertical position. With a corresponding geometric design of the optical elements, this has the advantage that light coupled out from one optical element in an overlapping area, which is at least partially split into individual colors due to chromatic aberration, can be superimposed by light from the overlapping optical element, which is not subject to chromatic aberration or is subject to it to a lesser degree. In this way, a color fringe of one or more optical elements can be compensated for, thus increasing the illumination quality of the lighting arrangement according to the invention.

[0008] In one embodiment, the light sources are arranged horizontally side by side in a row along a line in the longitudinal direction of the lighting arrangement. In another embodiment, the light sources are arranged along at least a first line in a first row and along a second line in a second row, the first and second rows being offset from each other in the transverse direction. In particular, the first optical elements are assigned to light sources of a first row and the second optical elements to light sources of a second row. Furthermore, the light sources of the first row and the light sources of the second row can be arranged offset from each other in the longitudinal direction such that at least a portion of the light sources of the first row are positioned longitudinally at the level of a geometric center of gravity of a second receiving volume and / or vice versa.The light sources can also be arranged in three, four or more rows.

[0009] In one embodiment, the outer surfaces of the first optical elements have a different geometry than the outer surfaces of the second optical elements. Advantageously, the optical elements can be adapted such that they extend as far vertically as possible into the first and / or second receiving volume to further improve volume utilization. Furthermore, the outer surfaces of the optical elements can be coordinated such that an overlap occurs specifically in the areas where a color fringe appears and / or that the overlapping area of ​​at least one of the optical elements is designed to illuminate a color fringe of one or more other optical elements. In one embodiment, the outer surfaces of the at least two first optical elements and / or the at least two second optical elements are essentially identical to each other. Preferably, the first optical elements are essentially identical to each other.Alternatively or additionally, the second optical elements are essentially identical to each other.

[0010] In a further embodiment, the first and second optical elements each have a horizontal mean diameter bounded by their respective outer surfaces. The horizontal mean diameter of the first or second optical elements increases along the vertical direction in at least one vertical section of the respective optical element, starting from the light source to which the respective optical element is assigned. Simultaneously, the horizontal mean diameter of the other first or second optical element that engages the receiving volume decreases along the vertical direction in at least one part of the same vertical section, starting from the light source to which the respective optical element is assigned.With this design of the optical elements, a particularly deep vertical penetration of the first and / or second optical element into the first or second receiving volume can be achieved. An increase in the horizontal mean diameter can occur over a longer section than a decrease, or vice versa. Furthermore, the increase and decrease need not necessarily have the same slope, but can have different slopes. For example, the increase in the horizontal mean diameter can be greater than the decrease, or vice versa. In addition, several, and in particular at least two, vertical sections can be provided in which the horizontal mean diameter of the first or second optical elements increases, while the mean horizontal diameter of the other optical element decreases.

[0011] In one embodiment, the at least one first optical element engaging the second receiving volume extends vertically into the second receiving volume by at least 10%, 20%, 30%, 40%, 50%, 70%, or 90% of its maximum vertical height. Additionally or alternatively, the second optical element engaging the first receiving volume can extend vertically into the first receiving volume by at least 10%, 20%, 30%, 40%, 50%, 70%, or 90% of its maximum vertical height. The further the first and / or the second optical element extends into the first or second receiving volume, the more the volume utilization of the luminaire arrangement according to the invention can be improved, and the required installation space can be reduced or the available installation space utilized more effectively.To improve volume utilization, it is further advantageous if the respective first and / or second receiving volume of the luminaire arrangement according to the invention, into which the at least one first or second optical element engages vertically, is filled to at least 10%, 15%, 20%, 30%, or 50% by the at least one first or second optical element. If several optical elements engage in a receiving volume, the percentages refer to the sum of all engaging optical elements.

[0012] In one embodiment, the first and second optical elements are each configured to direct light such that at least a portion of the light coupled into each undergoes a deflection relative to a vertical axis of the optical element, the deflection being determined by a wavelength dependence defined by the respective optical element. In this embodiment, the first optical elements may exhibit at least a partially different wavelength dependence than the second optical elements, in particular a wavelength dependence inversely proportional to that of the second optical elements. This can be achieved, for example, by a differently designed shape of the light coupling section and / or the light output section, or by light-refracting or, alternatively, light-reflecting structures.An inverse wavelength dependence of the deflection means that, with one of these wavelength dependencies, the deflection increases with increasing wavelength of the light, while with the other, the deflection decreases with increasing wavelength. Providing different wavelength dependencies is advantageous, among other things, because it allows the first and second optical elements to develop color fringes in different ways, so that the respective color fringes of the first and second optical elements can be illuminated particularly well by the other optical elements.

[0013] In one embodiment, the first and second optical elements are each assigned to and arranged on the respective light source such that light emitted by the light source can be coupled into the optical element and, after propagation through the optical element, can be coupled out of it. During propagation, the coupled light can undergo total internal reflection within at least some of the first and second optical elements. The proportion undergoing total internal reflection in at least some of the first optical elements is greater than in at least some of the second optical elements. In particular, the proportion undergoing total internal reflection is at least twice as large, more specifically at least five times as large, or more specifically at least ten times as large. Preferably, only the first optical elements or only the second optical elements are total internal reflection lenses (TIR lenses).Furthermore, it is preferred if only the first optical elements or only the second optical elements are refractor lenses. In a particularly preferred embodiment, either the first optical elements or the second optical elements are TIR lenses, and the other elements of the first or second optical elements are refractor lenses. In another embodiment, both the first and second optical elements are either TIR lenses or refractor lenses. In principle, the TIR lenses and / or the refractor lenses can differ from one another in their optical properties and / or in the geometry of their outer surfaces.

[0014] In one embodiment, at least one of the first optical elements, in particular several of the first optical elements, in particular all of the first optical elements, provides a different light distribution curve (LDC) than at least one of the second optical elements, in particular several of the second optical elements, in particular all of the second optical elements. In particular, the optical properties of at least one of the first optical elements, in particular several of the first optical elements, in particular all of the first optical elements, are configured and / or the first optical element is arranged relative to the associated light source in such a way that a beam arrangement consisting of the at least one first optical element and the associated light source provides a different LDC than a beam arrangement consisting of at least one second optical element, in particular several second optical elements, in particular all of the second optical elements, and the associated light source.In particular, the optical efficiency of the emission arrangement consisting of the at least one second optical element and the associated light source is determined by the optical properties of the at least one second optical element and / or by the relative arrangement of the second optical element to the light source. In one embodiment, all of the first optical elements provide a substantially identical optical efficiency. Alternatively, at least one first optical element provides an optical efficiency different from that of at least one other first optical element. In another embodiment, all of the second optical elements provide a substantially identical optical efficiency. Alternatively, at least one second optical element provides an optical efficiency different from that of at least one other second optical element.In principle, by providing different LVKs (light sources), whether within the first and / or second optical elements or between them, different areas of a room can be advantageously illuminated in a targeted and different way. For example, in this way the lighting arrangement according to the invention can be emitted at different spatial angles.

[0015] In another embodiment, the first and second optical elements provide a substantially identical luminous efficacy (LCE). In particular, the LCE provided by the first and second optical elements is determined by the optical properties of the respective optical elements and / or by the relative arrangement of the respective optical elements to the associated light sources. A substantially identical LCE can be advantageous if the luminaire arrangement according to the invention is intended to illuminate the space to be lit as uniformly as possible.

[0016] In a further embodiment, the light sources to which the first optical elements are assigned form a first light source group, and the light sources to which the second optical elements are assigned form a second light source group. In this embodiment, the lighting arrangement also includes a control unit. Preferably, the control unit is configured to control and / or dim the light sources of the first light source group independently of the light sources of the second light source group and / or vice versa. In particular, the first light source group has a different light color than the second light source group.Alternatively or additionally, the first optical elements together with the first light source group can provide a first emission arrangement configured to emit light into a first solid angle, wherein the second optical elements together with the second light source group can provide a second emission arrangement configured to emit light into a second solid angle, the first and second solid angles being different from each other. This has the advantage that, by selectively controlling the different light source groups, rooms can be illuminated in different colors with the luminaire according to the invention. Furthermore, the different solid angles make it advantageously possible to illuminate different areas of a room as needed. If the luminaire also has more than two light source groups and more than the first and second optical elements, respectively, the luminaire can be configured to emit light into a second solid angle.With more than just the two beam arrangements, a wide variety of lighting scenarios can be implemented. Furthermore, the control unit can also be configured to independently control and / or dim the individual light sources of the first group and / or the individual light sources of the second group, in order to create further lighting scenarios.

[0017] In a further embodiment, the first optical element arrangement and the second optical element arrangement form a common optical element assembly. The optical element assembly can, in particular, be made up of at least two parts, wherein the first optical element arrangement is a first part and the second optical element arrangement is a second part, and wherein fastening means are preferably provided with which the first and the second optical element arrangements can be fastened together. In one embodiment, the respective optical element arrangement is made in one piece. In another embodiment, the optical element assembly is made in one piece. Regardless of whether the optical element assembly is made in two parts, in multiple parts, or in one piece, it can, in particular, be manufactured from plastic by injection molding. Accordingly, in this case, the first and second optical elements are also made of plastic.In particular, the first and / or the second optical elements are made of PMMA. Furthermore, it is preferred that the optical element assembly has a horizontal top surface facing away from the light sources, which is at least partially, and preferably completely, formed as a flat surface.

[0018] The invention further relates to a luminaire comprising a luminaire arrangement according to the invention and a housing, wherein the luminaire arrangement is attached to the housing. The housing has a receiving space in which the luminaire arrangement is at least partially arranged, and wherein the luminaire arrangement is, in particular, secured within the housing. The first optical element arrangement and / or the second optical element arrangement, preferably both optical element arrangements, are detachably attached to the housing. Furthermore, the first optical element arrangement and / or the second optical element arrangement, preferably both optical element arrangements, are also detachably arranged on the respective associated light sources. This allows the optical element arrangements of the luminaire according to the invention to be separated from the light sources without damage and, for example, replaced, even if the luminaire is mounted on a ceiling or a wall.Furthermore, the light sources are easily accessible for maintenance purposes, allowing them to be repaired and / or replaced.

[0019] In one embodiment, the lighting arrangement is designed such that it forms an outer component of the housing. In particular, the lighting arrangement forms at least part of a housing cover that serves to close the housing. In this way, sensitive components of the lighting arrangement are protected within the housing, while the light emitted by the lighting arrangement is not obstructed by the housing. Preferably, the lighting arrangement is flush with at least part of the remaining housing at its upper surface facing away from the light sources, with the light sources being arranged within the housing to provide them with optimal protection.

[0020] The invention is explained in more detail below with reference to figures and exemplary embodiments.

[0021] They show: Figure 1: in highly simplified schematic representations of principle various schematic views of a first embodiment of the lighting arrangement according to the invention; Figure 2: in a highly simplified schematic representation of principle a schematic top view of a second embodiment of the lighting arrangement according to the invention.

[0022] In Figure 1 , encompassing the Figure 1a and 1b Figure 1 shows various schematic views of a first embodiment of the lighting arrangement according to the invention. Figure 1 These diagrams are purely schematic and may not show details and components required for the function of the lighting arrangement.

[0023] Figure 1aFigure 1 shows a schematic sectional view of a side view of the first embodiment. In the present embodiment, the lighting arrangement comprises a total of five light sources 1.1 to 1.5, which are arranged side by side in a horizontal plane along a longitudinal direction L on a circuit board 1. The light sources 1.1 to 1.5 emit light, particularly in the vertical direction V. In the present and generally preferred embodiment, the light sources 1.1 to 1.5 are designed as LEDs, which can be controlled by means of a control unit (not shown). The lighting arrangement comprises a first optical element arrangement 2 with a total of two first optical elements 2.1, 2.2, wherein the first optical elements 2.1, 2.2 are identical refractor lenses with a maximum vertical height H. Furthermore, a second optical element arrangement 3 with a total of three second optical elements 3.1 to 3.3 is provided, which are identical TIR lenses.The first optical elements 2.1, 2.2 and the second optical elements 3.1 to 3.3 are made of PMMA.

[0024] Both the first optical elements 2.1, 2.2 and the second optical elements 3.1 to 3.3 are arranged in the same horizontal plane. All optical elements 2.1, 2.2, 3.1 to 3.3 are arranged side by side in a line along the longitudinal direction L, as shown in particular in Figure 1b can be seen. Figure 1bFigure 1 shows a bottom view of the first embodiment, showing only the first optical elements 2.1, 2.2 and the second optical elements 3.1 to 3.3. Each of the first optical elements 2.1, 2.2 and the second optical elements 3.1 to 3.3 is assigned to one of the light sources 1.1 to 1.5. The optical elements 2.1, 2.2, 3.1 to 3.3 are arranged relative to the light sources 1.1 to 1.5 such that light emitted by the light sources 1.1 to 1.5 is coupled through a light coupling section of the optical elements 2.1, 2.2, 3.1 to 3.3 (not shown in detail) facing the light sources 1.1 to 1.5. The coupled-in light propagates within the optical elements 2.1, 2.2, 3.1 to 3.3 according to the optical properties of the refractor or TIR lenses and is coupled out through a light output coupling section of the optical elements 2.1, 2.2, 3.1 to 3.3, which is not shown in detail and is at least partially facing away from the light sources 1.1 to 1.5.

[0025] The first optical elements 2.1, 2.2 are arranged relative to each other such that they horizontally define a first receiving volume 4 located between their outer surfaces. Figure 1aThe outer boundary 4.1 of the extent of the first recording volume 4 is represented by a dashed line in a plane perpendicular to the transverse direction Q and passing through the maximum vertical height H of the two first optical elements 2.1, 2.2. It can be seen that the extent of the first recording volume 4 in the longitudinal direction L is limited in this plane, and also more generally, horizontally by the outer surfaces of the first optical elements 2.1, 2.2. It is further evident that the extent of the first recording volume 4 in the vertical direction V is limited in this plane by the maximum vertical height H of the first optical elements 2.1, 2.2. The first recording volume 4 is open at the top, i.e., not closed by an outer surface of either of the second optical elements 2.1, 2.2. Figure 1bThe outer boundary 4.1 of the first recording volume 4 is shown in a horizontal plane perpendicular to the vertical direction V. This horizontal plane passes through the lowest point of the first optical elements 2.1, 2.2 with respect to the vertical direction V. Analogous to the representation in Figure 1a It is also evident in this figure that the longitudinal extent L of the first recording volume 4 in this plane is horizontally limited by the outer surfaces of the first optical elements 2.1, 2.2. Furthermore, it is evident that the two first optical elements 2.1, 2.2 have an identical maximum width B extending in the transverse direction Q, which limits the transverse extent Q of the first recording volume 4 in the depicted horizontal plane.

[0026] The first recording volume 4 has the advantage that the second optical element 3.2, as in Figure 1ato see, into which it can intervene vertically. Through this vertical intervention and the corresponding geometric design of the outer surfaces, as in Figure 1b As can be seen, the second optical element 3.2 and the first optical elements 2.1, 2.2 overlap horizontally. This allows, on the one hand, the packing density of the illuminating arrangement according to the invention to be increased, and on the other hand, any possible color fringing of the second optical element 3.2 to be illuminated by the first optical elements 2.1, 2.2 and vice versa.

[0027] Figure 2 Shows a schematic view of a second embodiment of the lighting arrangement according to the invention from below. Only the optical elements are shown. The representation according to Figure 2This is purely schematic and should be considered a highly simplified representation. Unlike the first embodiment, not all of the first optical elements 2.1 to 2.4 and the second optical elements 3.1 to 3.9 are arranged side by side in a line. Instead, two first optical elements 2.1 and 2.2, 2.3 and 2.4, and three second optical elements 3.1 to 3.3, 3.4 to 3.6, and 3.7 to 3.9 are arranged in rows offset from one another in the transverse direction Q and extending in the longitudinal direction L. The optical elements still engage vertically in the receiving volume formed by each pair of the other optical elements; however, in the second embodiment, unlike the first embodiment, they are no longer arranged substantially centrally in the receiving volume in the transverse direction Q.

[0028] The number of optical elements and light sources shown in the figures serves only to illustrate the principle of the invention. In reality, the lighting arrangement or the luminaire according to the invention can have a much larger number of optical elements and light sources. Reference symbol list

[0029] 1. Circuit board 1.1 to 1.5 Light source 2. First optical element arrangement 2.1 to 2.4 First optical element 3. Second optical element arrangement 3.1 to 3.9 Second optical element 4. First recording volume 4.1 Outer boundary L Longitudinal direction Q Transverse direction V Vertical direction H Maximum vertical height B Width

Claims

1. A luminaire assembly comprising at least four light sources (1.1, 1.2, 1.3, 1.4, 1.5) and at least one first optical element assembly (2) and a second optical element assembly (3), wherein the luminaire assembly extends horizontally in a longitudinal direction (L) and in a transverse direction (Q) and the at least four light sources (1.1, 1.2, 1.3, 1.4, 1.5) are arranged horizontally next to each other and wherein the first optical element assembly (2) comprises at least two first optical elements (2.1, 2.2) and the second optical element assembly comprises at least two second optical elements (3.1, 3.2, 3.3), wherein each optical element (2.1, 2.2, 3.1, 3.2, 3.3) is assigned to one of the light sources (1.1, 1.2, 1.3, 1.4, 1.5) and is arranged on it such that the light source (1.1, 1.2, 1.3, 1.4, 1.5) emitted light can be coupled into a light coupling section of the optical element (2.1, 2.2, 3.1, 3.2, 3.3) and from a light coupling section of the optical element (2.1, 2.2, 3.1, 3.2, 3.3), which is spaced apart from the light coupling section, according to whose optical properties it can be coupled out in a directed manner, wherein the first optical elements (2.1, 2.2) differ in their optical properties from the second optical elements (3.1, 3.2, 3.3), . characterized by the fact that the first optical elements (2.1, 2.2) are arranged and designed such that they horizontally define a first receiving volume (4) arranged between their outer surfaces and / or that the second optical elements (3.1, 3.2, 3.3) are arranged and designed such that they horizontally define a second receiving volume arranged between their outer surfaces, wherein the first optical elements (2.1, 2.2) and the second optical elements (3.1, 3.2, 3.3) are arranged relative to each other such that at least one first optical element (2.1, 2.2) engages vertically in the second receiving volume and / or at least one second optical element (3.1, 3.2, 3.3) engages vertically in the first receiving volume (4).

2. Lighting arrangement according to claim 1, characterized by the fact that the outer surfaces of the first optical elements (2.1, 2.2) have a different geometry than the outer surfaces of the second optical elements (3.1, 3.2, 3.3).

3. Lighting arrangement according to claim 1 or claim 2, characterized by the fact thatThe first optical elements (2.1, 2.2) and the second optical elements (3.1, 3.2, 3.3) each have a horizontal mean diameter bounded by their outer surfaces, wherein the horizontal mean diameter of the first optical elements (2.1, 2.2) or the second optical elements (3.1, 3.2, 3.3) increases along a vertical direction (V) in at least one vertical section starting from the light sources (1.1, 1.2, 1.3, 1.4, 1.5), and the horizontal mean diameter of the other at least one first or second optical element (2.1, 2.2, 3.1, 3.2, 3.3) engaging the receiving volume (4) decreases along the vertical direction (V) in at least one part of the vertical section starting from the light sources (1.1, 1.2, 1.3, 1.4, 1.5).

4. Lighting arrangement according to one of the preceding claims, characterized by the fact thatthe first optical elements (2.1, 2.2) and / or the second optical elements (3.1, 3.2, 3.3) have a maximum vertical height (H), and - the at least one first optical element (2.1, 2.2) engaging in the second recording volume engages vertically into the second recording volume with at least 25%, in particular at least 50% or in particular at least 75% of the maximum vertical height, and / or - the at least one second optical element (3.1, 3.2, 3.3) engaging in the first recording volume (4) engages vertically into the first recording volume with at least 25%, in particular at least 50% or in particular at least 75% of the maximum vertical height.

5. Lighting arrangement according to one of the preceding claims, characterized by the fact thatthe respective first and / or second receiving volume (4) into which the at least one first or second optical element (2.1, 2.2, 3.1, 3.2, 3.3) vertically engages, is filled to at least 10%, in particular at least 20%, in particular at least 30%, in particular at least 50%, of which the at least one first or second optical element (2.1, 2.2, 3.1, 3.2, 3.3) is filled.

6. Lighting arrangement according to one of the preceding claims, characterized by the fact that The first optical elements (2.1, 2.2) and the second optical elements (3.1, 3.2, 3.3) are each designed to direct light such that at least a part of the light coupled into them experiences a deflection relative to a vertical axis according to a wavelength dependence defined by the respective optical element (2.1, 2.2, 3.1, 3.2, 3.3), wherein the first optical elements (2.1, 2.2) have at least partially a different wavelength dependence than the second optical elements (3.1, 3.2, 3.3).

7. Lighting arrangement according to one of the preceding claims, characterized by the fact that that the first optical elements (2.1, 2.2) are essentially identical to each other and / or that the second optical elements (3.1, 3.2, 3.3) are essentially identical to each other.

8. Lighting arrangement according to one of the preceding claims, characterized by the fact thatThe optical elements (2.1, 2.2, 3.1, 3.2, 3.3) are each assigned to and arranged on the respective light source (1.1, 1.2, 1.3, 1.4, 1.5) such that light emitted from the light source (1.1, 1.2, 1.3, 1.4, 1.5) can be coupled into the optical element (2.1, 2.2, 3.1, 3.2, 3.3) and, after propagation through the optical element (2.1, 2.2, 3.1, 3.2, 3.3), can be coupled out of it, wherein, at least in some of the first and second optical elements (2.1, 2.2, 3.1, 3.2, 3.3), the coupled light undergoes total internal reflection within the optical element (2.1, 2.2, 3.1, 3.3) during its propagation. 3.2, 3.3) experiences, wherein the component experiencing total reflection in the first optical elements (2.1, 2.2, 3.1, 3.2, 3.3) is greater than in the second optical elements (2.1, 2.2, 3.1, 3.2, 3.3), in particular at least twice as large, in particular at least five times as large.

9. Lighting arrangement according to one of the preceding claims, characterized by the fact thatexclusively the first optical elements (2.1, 2.2) or exclusively the second optical elements (3.1, 3.2, 3.3) are TIR lenses.

10. Lighting arrangement according to one of the preceding claims, characterized by the fact that exclusively the first optical elements (2.1, 2.2) or exclusively the second optical elements (3.1, 3.2, 3.3) are refractor lenses.

11. Lighting arrangement according to one of the preceding claims, characterized by the fact that at least one of the first optical elements (2.1, 2.2), in particular all first optical elements (2.1, 2.2), provides a different light distribution curve than at least one of the second optical elements (3.1, 3.2, 3.3), in particular all second optical elements (3.1, 3.2, 3.3).

12. Lighting arrangement according to one of claims 1 to 10, characterized by the fact that the first optical elements (2.1, 2.2) and the second optical elements (3.1, 3.2, 3.3) provide an essentially identical light distribution curve.

13. Lighting arrangement according to one of the preceding claims, characterized by the fact thatthe light sources (1.2, 1.4) to which the first optical elements (2.1, 2.2) are assigned form a first light source group and the light sources (1.1, 1.3, 1.5) to which the second optical elements (3.1, 3.2, 3.3) are assigned form a second light source group, and wherein the lighting arrangement has a control unit which is configured to control and / or dim the light sources (1.2, 1.4) of the first light source group independently of the light sources (1.1, 1.3, 1.5) of the second light source group, and / or vice versa, wherein in particular the first light source group has a different light color than the second light source group and / or the first optical elements (2.1, 2.2) together with the first light source group provide a first emission arrangement which is configured to emit light into a first solid angle, and the second optical elements (3.1, 3.2, 3.3)3) together with the second group of light sources, provide a second emission arrangement configured to emit light into a second solid angle that differs from the first solid angle, wherein in particular the control unit is configured to control and / or dim the individual light sources (1.2, 1.4) of the first group of light sources and / or the individual light sources (1.1, 1.3, 1.5) of the second group of light sources independently of each other.

14. Lighting arrangement according to one of the preceding claims, characterized by the fact thatthe first optical element arrangement (2) and the second optical element arrangement (3) form an optical element assembly and / or are each made in one piece, wherein in particular the optical element assembly formed by the first and second optical element arrangement is made in one piece, wherein in particular the optical element assembly has a horizontal top surface facing away from the light sources (1.1, 1.2, 1.3, 1.4, 1.5), which is formed at least partially, in particular completely, as a flat surface.

15. Luminaire comprising at least one luminaire arrangement according to one of the preceding claims, characterized bya housing to which the lighting arrangement is attached, wherein the lighting arrangement is at least partially arranged in a receiving space of the housing, wherein the first optical element arrangement (2) and / or the second optical element arrangement (3) are detachably attached to the housing and wherein the first optical element arrangement (2) and / or the second optical element arrangement (3) are detachably arranged on the light sources (1.1, 1.2, 1.3, 1.4, 1.5) associated with the first optical elements (2.1, 2.2) and / or second optical elements (3.1, 3.2, 3.3), wherein in particular the lighting arrangement is designed such that it forms an outer component of the housing, in particular at least a part of a housing cover.

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