• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a luminaire optics (2) comprising a flat light guide (3) with two opposite flat sides (30, 31), a lens block grid (5) which is arranged on a first (30) of the two flat sides (30, 31) it is arranged that the lens block grid elements (50) of the lens block grid (5) are in flat contact with the first flat side (30), the second flat side (31) having a structure with diffuser elements (7), the diffuser elements (7) are each provided opposite one of the lens block grid elements (50) in order to diffusely scatter light coupled into the light guide (3) and to emit it at least partially via the respective opposite lens block grid element (50).
    公开号:AT16663U1
    申请号:TGM339/2015U
    申请日:2015-11-16
    公开日:2020-04-15
    发明作者:Keller Katharina
    申请人:Zumtobel Lighting Gmbh；
    IPC主号:
    专利说明:

    description
    LUMINAIRE OPTICS AND LUMINAIRE HAVING THE LIGHT OPTICS The present invention relates to a luminaire optics with a flat light guide and a lens block raster arranged on the flat light guide for emitting light. The invention further relates to a lamp with a corresponding lamp optics.
    The starting point of the present invention is the use of lens block grids (for example glass block grids) in combination with a flat light guide. In such an embodiment, the flat light guide and the lens block grid are connected to one another accordingly. In particular, the lens block grid elements are glued to the light guide in the contact areas to the light guide. The light, which is preferably coupled in laterally via an end region of the light guide, for example by means of LEDs as illuminants, into the light guide, and then via the lens block grid elements, can be coupled out via the aforementioned contact areas.
    In such a luminaire optics arrangement, the luminance is often not the same in all directions of radiation and usually changes with increasing distance from the coupling area of the light into the light guide, so that an inhomogeneous light output takes place, which leads to a corresponding direction of view-dependent lighting effect of the luminaire or Luminaire areas in the different decoupling areas of the lens block grid and thus leads to an inhomogeneous perception of light.
    It is therefore an object of the present invention to provide a luminaire optics according to the type mentioned, which enables a particularly homogeneous light emission.
    [0005] This object is achieved by the subject matter of the independent claims. The dependent claims further develop the central idea of the invention in a particularly advantageous manner.
    According to a first aspect, the invention relates to a luminaire optic which has a flat light guide and a lens block pattern. The flat light guide has two opposite flat sides. The lens block grid is arranged on a first of the two flat sides of the light guide in such a way that the lens block grid elements of the lens block grid are in flat contact with the first flat side. The lens block raster elements are preferably non-detachably connected to the light guide, for example via an adhesive connection. The second flat side (ie the flat side opposite the first flat side) of the light guide has a structure with diffuser elements. The diffuser elements are each provided opposite one of the lens block grid elements. In other words, the diffuser elements are each provided opposite one of the contact areas between the lens block raster elements and the light guide. Due to the corresponding arrangement, the diffuser elements are provided in such a way that they diffuse scatter light that is coupled into the light guide and at least partially emit them via the respective opposite lens block grid element, that is to say the lens block grid element assigned to the corresponding diffuser element.
    The present invention thus makes it possible to provide diffusely scattering elements via the diffuser elements provided opposite according to the lens block grid elements, which are therefore specifically provided in the area of the respective lens block grid elements on the side of the light guide opposite the respective lens block grid element a uniform and preferably Lambertian light emission is made possible via the individual lens block raster elements, which in turn leads to a light emission or light emission effect which is independent of the viewing direction. The diffuser elements are therefore preferably designed and arranged with respect to the lens block grid element opposite them in each case such that they enable light to be emitted via the luminaire optics in accordance with Lambert's law.
    / 7th
    AT 16 663 U1 2020-04-15 Austrian Patent Office [0008] The diffuser element is preferably essentially in the form of a point, so that on the one hand it is provided in a simple manner and yet the luminaire is only provided to a limited extent.
    According to one embodiment, the diffuser element can be formed as a structural element on the second flat side of the light guide. As such a structural element, a preferably spatially limited roughening of the light guide surface is conceivable in the corresponding areas.
    Alternatively or additionally, it is also conceivable that the diffuser element is provided as a separate structural element on the second flat side of the light guide. Such a separate structural element can, for example, comprise a coating which is formed or applied to the light guide surface, that is to say to the surface of the second flat side. The coating can consist of a preferably printed and also preferably reflective (for example white) lacquer. The light guide can thus be provided with corresponding diffuser elements by means of a simple printing process.
    According to an alternative or additional embodiment, the coating can also have an adhesive, which in this case is applied to the second flat side. The adhesive can also have scattering particles in order to provide improved diffuse scattering of the incident light.
    [0012] The luminaire optics can furthermore have a reflector element which is arranged adjacent to the second flat side of the light guide and is connected to the light guide via connection points. The connection points can be at least partially designed such that they form at least part of the diffuser elements. The provision of a corresponding reflector element on the side opposite the light emission side has the additional advantage that in principle, on the second flat side of the light guide, it is possible for undesired light to be returned to the light guide. In this case, the connection of the reflector element to the light guide can also be used as a diffuser element in order to diffusely radiate the light in this area according to a Lambertian light distribution via the light emission side, i.e. the first flat side of the light guide and further the light block grid elements.
    [0013] The reflector element can have a film or consist of a film. The film can be made of PET and preferably be a microcellular PET film. The reflector element is preferably made of a highly reflective material and in particular white. However, it is not necessary for the reflector element to extend over the entire flat light guide, provided that corresponding diffuser elements are provided in any previously described manner in order to achieve a correspondingly homogeneous light emission.
    The connection points for connecting the reflector element to the light guide can be formed, for example, by hot stamping and / or ultrasonic welding and / or friction welding and / or laser welding. It is also conceivable that the connection points have an adhesive or are formed by adhesive in order to fasten the reflector element to the light guide and thus simultaneously form the corresponding diffuser elements. This can be the coating described above in the form of an adhesive.
    Any combination of all the previously described embodiments of the diffuser element is also conceivable, it being possible for a single diffuser element to also include one or more of the aforementioned embodiments.
    The light guide and / or the reflector element can for example be made of PMMA.
    [0017] The light guide can have an end region that connects the flat sides and preferably encircles it, at least part of the end region being designed for coupling light into the light guide. The light guide can have any shape
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    AT 16 663 U1 2020-04-15 Austrian patent office and, for example, angular (quadrangular; rectangular and the like), round, oval or also free-form.
    According to a second aspect, the invention relates to a lamp with a lamp optics according to the invention. Such a luminaire can also have a light source, in particular an LED, for coupling light into the light guide. The coupling in of the light preferably takes place via at least a part of the end region of the light guide, so that the light can be coupled into the light guide in a targeted manner and can propagate in it, in order then to be coupled out of the light optics at the corresponding points, in particular via the light block grid elements . A particularly homogeneous light emission and light emission effect of the luminaire can thus be achieved by the inventive design of the luminaire optics. The diffuser elements are preferably designed and arranged with respect to the lens block raster element opposite them in each case such that the lamp fulfills the property of a Lambert spotlight. In this way, a particularly homogeneous light emission and light emission effect of the lamp is achieved.
    Further advantages and features of the present invention are described in the context of the following exemplary embodiments with reference to the figures of the accompanying drawings. Show it:
    Figure 1a: a schematic side view of a lamp according to the invention with lamp optics according to the invention (with reflector element) according to a first embodiment of the invention, Figure 1b: Lambertian light distribution of a Lambert spotlight, and [0022] Figure 2: a schematic side view of a Luminaire according to the invention with luminaire optics according to the invention according to a second embodiment of the invention.
    Figures 1 and 2 each show a lamp 1 according to the invention. The lamp 1 has a lamp optics 2 according to the invention, which in itself is also the subject of the present invention.
    The light optics 2 has a flat light guide 3, which has a first flat side 30 and a second flat side 31. The two flat sides 30, 31 lie opposite one another. The light guide 2 preferably has a front area 32 which connects the two flat sides 30, 31 and preferably runs all the way round, at least part of the front area 32 being designed for coupling light into the light guide 2. To couple light into the light guide 2, the luminaire 1 preferably has a light source 4, in particular an LED or a LED module, which is preferably assigned to the end region 32 of the light guide 2, preferably over the at least part of the end region 32 the light guide 2 to couple light into the light guide 2.
    The light guide 2 is preferably made of PMMA. However, other known materials for the light guide 2 are also conceivable.
    According to the invention, the luminaire optics 1 also has a lens block grid 5 which is arranged on the first flat side 30 of the light guide 2; in such a way that the lens block raster elements 50 of the lens block raster 5 are in surface contact with the first flat side 30. For the sake of clarity, only two lens block raster elements 50 are shown in each case, further lens block raster elements 50 connecting to the right in the figures in the same way. The areas of planar contact between the lens block raster elements 50 and the light guide 2 are also referred to as contact areas 6 in the context of the invention.
    [0027] According to the invention, the second flat side 31 of the light guide 3 has a structure with diffuser elements 7. In the context of the invention, “structure” is understood to mean a certain distributed arrangement of the individual diffuser elements, which, as will be described below, in particular depending on the arrangement of the lens block grid elements 50 with respect to
    3/7
    AT 16 663 U1 2020-04-15 Austrian patent office of the light guide 3 is formed and particularly preferably comprises a matrix structure.
    According to the invention, the individual diffuser elements 7 are each provided or arranged opposite one of the lens block grid elements 50. In other words, the diffuser elements 7 are each provided opposite one of the contact areas 6 between the lens block grid element 50 and the light guide 3. The diffuser elements 7 are provided in order to diffusely scatter light coupled into the light guide 3 and to emit it at least partially via the lens block grid element 50 located opposite each other.
    In particular, the diffuser elements 7 can be designed and arranged with respect to the lens block raster element 50 opposite each other in such a way that they enable light emission L via the luminaire optics 2 in accordance with Lambert's law. This is shown by way of example for the left light block grid element 50 in FIG. 2 and applies in the same way to all other lens block grid elements 50 and in the same way to the first exemplary embodiment.
    The diffuser element 7 is preferably essentially point-shaped, wherein it is preferably arranged perpendicular to the plane of extension of the light guide 3 in the center with respect to the associated (ie opposite) lens block grid element 50 or contact area 6; these are preferably aligned coaxially to one another.
    The diffuser element 7 can alternatively or additionally also be formed as a structural element on the second flat side 31 of the light guide 3. Such a structural element can be designed, for example, as a roughening of the light guide surface, that is to say the surface of the second flat side 31 of the light guide 3.
    However, it is also conceivable that the diffuser element 7 is alternatively or additionally provided or applied as a separate structural element on the second flat side 31 of the light guide 3. In the context of the invention, “separately” means that the structural element is additionally provided on or on the light guide 3, even if, after the provision, it should be permanently (and permanently) connected to the light guide 3 or provided in one piece.
    The separate structural element 7 can be formed, for example, as a coating on the light guide surface, that is to say the surface of the second flat side 31. The coating can preferably be printed and particularly preferably consist of a (reflective) lacquer (for example white lacquer) which is printed, for example, on the surface of the second flat side 31 of the light guide 3.
    [0034] It is also conceivable that the coating has an adhesive. As will be described below, this adhesive can also perform additional functions. In particular, the adhesive or the coating can have scattering particles which enable or improve diffuse scattering of the incident light. Such scattering particles can have titanium dioxide, for example.
    The luminaire optics 2 can also have a reflector element 8, as shown in Figure 1. The reflector element 8 is arranged adjacent to the second flat side 31 of the light guide 3 and is (only) connected to the light guide 3 via connection points 70. The connection points 70 can at least partially be designed such that they form / have at least a part of the diffuser elements 7 or all of the diffuser elements 7. The connection points 70 can be formed for example by hot stamping and / or ultrasonic welding and / or friction welding and / or laser welding. The connection points can also have an adhesive and in particular the aforementioned adhesive, which then also serves as a diffuser element 7.
    The reflector element 8 can preferably have a film or consist of a film. The film 8 is preferably made of PET and particularly preferably a microcellular PET film. The reflector element can also be made of PMMA. The reflector element is particularly preferably made of a highly reflective material
    4/7
    AT 16 663 U1 2020-04-15 Austrian patent office and especially white.
    By providing the reflector element 8, the connection points 70 serve at least partially at the same time as a diffuser element 7, a particularly effective luminaire optic 2 is provided, since, due to the reflector element 8, light emerging from the second flat side 31 of the light guide 3 may enter the light guide 3 can be traced back, while the connection points 70, which are preferably distributed at points and assigned to the corresponding lens block raster elements 50, serve as diffuser elements 7 according to the invention, via which the light is particularly preferably according to a Lambertian light distribution (see FIG. 1b) via the light emission side of the luminaire optics 2 (i.e. the first flat side 30 of the light guide 3 and subsequently at least partially via the lens block raster elements 50 and thus the lens block raster 5) can be radiated diffusely.
    A luminaire 1 provided with a luminaire optic 2 designed in this way is preferably designed as a Lambert radiator. For this purpose, in particular the diffuser elements 7 are designed and arranged with respect to the lens block raster element 50 opposite each other in such a way that the lamp 1 fulfills the properties of a Lambert radiator. Each lens block grid element 50 is preferably assigned at least one diffuser element 7 opposite (with respect to the light guide 3). Both lens block raster elements 50 and diffuser elements 7 are preferably arranged in the form of a raster or matrix distribution and assigned to one another.
    The invention is not restricted to the exemplary embodiments described above, as long as it is covered by the subject matter of the following claims. In particular, in order to form a luminaire optics according to the invention, it is not necessary for each lens block raster element 50 to be assigned a diffuser element 7, as long as an increase in the homogeneity of the light output can be achieved. Only in a preferred embodiment is each lens block raster element 50 also assigned a diffuser element 7 opposite. In addition, the invention is neither limited to the number of lenticular block grid elements nor the dimensions of the individual components, nor the number of lamps used and their exact arrangement, nor the materials described above, provided that they are covered by the subject matter of the following claims of a lamp optics 2 and lamp 1 . It is also not absolutely necessary to achieve a Lambertian light distribution or light emission, which is particularly preferred because particularly homogeneous light emission is desired.
    权利要求:
    Claims (10)
    [1]
    1. Luminaire optics (2) having:
    a flat light guide (3) with two opposite flat sides (30, 31), a lens block grid (5) which is arranged on a first (30) of the two flat sides (30, 31) in such a way that the lens block grid elements (50) of the Lens block grids (5) are in surface contact with the first flat side (30), the second flat side (31) having a structure with diffuser elements (7), the diffuser elements (7) each being provided opposite one of the lens block grid elements (50) in order to diffusely scatter light coupled into the light guide (3) and to emit it at least partially via the opposite lens block grid element (50).
    [2]
    2. Luminaire optics (2) according to claim 1, wherein the diffuser elements (7) are designed and arranged with respect to the lens block grid element (50) opposite each other in such a way that they enable light to be emitted via the luminaire optics (2) in accordance with Lambert's law.
    [3]
    3. luminaire optics (2) according to claim 1 or 2, wherein the diffuser element (7) is substantially point-shaped.
    [4]
    4. Luminaire optics (2) according to any one of the preceding claims, wherein the diffuser element (7) is designed as a structural element on the second flat side (31) of the light guide (3), preferably as a roughening of the light guide surface.
    [5]
    5. Luminaire optics (2) according to one of the preceding claims, wherein the diffuser element (7) is provided as a separate structural element on the second flat side (31) of the light guide (3).
    [6]
    6. luminaire optics (2) according to claim 5, wherein the separate structural element is designed as a coating on the light guide surface.
    [7]
    7. luminaire optics (2) according to claim 6, wherein the coating consists of a preferably printed and preferably reflective lacquer.
    [8]
    8. light optics (2) according to claim 6 or 7, wherein the coating comprises an adhesive.
    [9]
    9. luminaire optics (2) according to one of the preceding claims, wherein the luminaire optics (2) further comprises a reflector element (8) which is arranged adjacent to the second flat side (31) of the light guide (3) and with the light guide (3) is connected via connection points (70), the connection points (70) being at least partially designed such that they form at least part of the diffuser elements (7).
    [10]
    10. lamp (1) having a lamp optics (2) according to one of the preceding claims, further comprising a lamp (4), in particular an LED, for coupling light into the light guide (3), preferably over at least part of the end region (32 ) of the light guide (3).
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202015104088.1U|DE202015104088U1|2015-08-05|2015-08-05|Luminaire optics and luminaire comprising the luminaire optics|
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