• 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 an arrangement for emitting light, which has a first OLED light source (1) for generating a first light (L1), wherein the first OLED light source (1) has a first light emission surface (2) for emitting the first light (L1). and a second OLED light source (3) for generating a second light (L2), wherein the second OLED light source (3) has a second light emission surface (4) for emitting the second light (L2). The design is such that the first light (L1) at least partially enters the second OLED light source (3) and is subsequently emitted via the second light emission surface (4). Furthermore, the arrangement has a control device (5) for the independent control of the first OLED light source (1) and the second OLED light source (3). In this case, the second OLED light source (3) has a structured surface (6, 7) for influencing the direction of the first light (L1) and / or the second light (L2). In this way it can be achieved that the light emitted by the arrangement of light from the first light (L1) and the second light (L2) composed, the weighting of these two light outputs by the control arrangement (5) can be set differently. Thus, by changing this weighting, the light-emitting behavior of the arrangement can be changed, in particular with respect to the directional distribution of the emitted light. An introduction of an optical element is not required here.
    公开号:AT15235U1
    申请号:TGM308/2015U
    申请日:2015-10-27
    公开日:2017-03-15
    发明作者:
    申请人:Tridonic Gmbh & Co Kg；
    IPC主号:
    专利说明:

    description
    OLED ARRANGEMENT FOR LIGHTING
    The invention relates to an arrangement for emitting light with two OLED light sources (OLED: organic light-emitting diode). Furthermore, the invention relates to a method for driving such an arrangement.
    In general, an OLED has a light output which corresponds approximately to that of a Lambert radiator. The directional distribution of the light output is usually not changeable. If a different directional distribution of the light output is desired, for example a predominantly forward light emission or a predominantly directed light emission ("butterfly"), a corresponding optical element must be positioned in front of the light emission surface of the OLED for this purpose.
    The invention has for its object to provide an improved OLED arrangement for emitting light. In particular, the OLED arrangement should offer better possibilities for modifying the light output. Furthermore, a method for controlling such an arrangement should be specified.
    This object is achieved according to the invention with the objects mentioned in the independent claims. Particular embodiments of the invention are indicated in the dependent claims.
    According to the invention, an arrangement for emitting light is provided which has a first OLED light source for generating a first light, wherein the first OLED light source having a first light emitting surface for emitting the first light, and a second OLED light source for generating a second light, wherein the second OLED light source has a second light emitting surface for emitting the second light. The design is such that the first light at least partially enters the second OLED light source and is subsequently emitted via the second light emission surface. Furthermore, the arrangement has a control device for the independent control of the first OLED light source and the second OLED light source. The second OLED light source has a structured surface for influencing the direction of the first light and / or the second light.
    In this way it can be achieved that the light emitted from the arrangement of light is composed in principle of the first light and the second light, wherein the weighting of these two light outputs can be set differently by the control arrangement. Thus, by changing this weighting, the light-emitting behavior of the arrangement can be changed, in particular with respect to the directional distribution of the emitted light. An introduction of an optical element is not required here.
    Preferably, the first OLED light source and the second OLED light source are arranged parallel to each other. As a result, the arrangement can be made especially small-scale particular.
    Preferably, at least one of the two OLED light source is designed to be transparent. This is advantageous with respect to the efficiency of the arrangement.
    Preferably, the arrangement is designed such that between the first OLED light source and the second OLED light source, a distance is formed. This makes it possible to influence the first light particularly suitable.
    [0010] In terms of lighting technology, the structured surface is preferably formed at least partially on the second light-emitting surface and / or at least partially on a surface of the second OLED light source which is opposite the second light-emitting surface.
    Preferably, the structured surface is formed by a lens structure, in particular by a microlens structure. As a result, the light can be directed particularly suitable, in particular in a direction normal to the second light emitting surface.
    Preferably, a, the second light emitting surface opposite surface of the second OLED light source is designed plan. This is particularly advantageous with respect to the light control; In addition, this arrangement makes the arrangement particularly suitable small-scale design.
    Preferably, the structured surface is formed by a prismatic structure, in particular a microprism structure. This also makes it possible to achieve a particularly suitable light control. Furthermore preferably, the second light delivery surface is advantageously designed here in terms of manufacturing technology.
    Preferably, the first light emitting surface has no surface structure; in particular, it is designed plan. This is particularly advantageous both in terms of production technology and photometry.
    Preferably, the control device is configured to control the first OLED light source and the second OLED light source such that the intensity of the first light and the intensity of the second light change in opposite directions. In this way it can be achieved that the radiation behavior of the arrangement can be changed only by using the control device.
    Preferably, the first OLED light source and the second OLED light source are designed such that they each have as such individual emission characteristics that differ from each other. In this way it can be achieved that it is possible to "tune through" between the two emission characteristics.
    Preferably, the arrangement further comprises at least a third OLED light source, wherein only that of the OLED light sources, which is located on the side facing away from the light output side of the arrangement, is not designed transparent.
    According to a further aspect of the invention, a method for driving an arrangement according to the invention is provided; The method has the following step: the first OLED light source and the second OLED light source are controlled in such a way that the intensity of the first light and the intensity of the second light change in opposite directions.
    The invention will be explained in more detail below with reference to an embodiment and with reference to the drawings. 1 shows a sketch of the basic structure of an arrangement according to the invention with a first OLED light source and a second OLED light source, [0021] FIG. 2a shows an embodiment of the arrangement in which microlenses are formed on the second light output surface FIG. 2b shows a light output distribution achievable with this embodiment when the first OLED light source is turned on and the second OLED. FIG. 2b shows exemplary light beams representing the light profile with the first OLED light source switched on and the second OLED light source switched off FIG. 3a shows a sketch corresponding to FIG. 2a, wherein exemplary light beams are shown representing the light profile with the first OLED light source switched off and the second OLED light source switched on. FIG. 3b shows a light source with this light source. [0024] FIG Design achievable light output distribution when the first OLED light source is turned off and 4a shows a sketch corresponding to FIG. 2a, wherein exemplary light beams are shown representing the light profile when the first OLED light source is switched on and the second OLED light source is switched on. [0026] FIG. 4b shows a light output distribution that can be achieved with this embodiment when both OLED light sources are switched on. FIG. 5a shows an embodiment of the arrangement in which microprisms are formed on the surface of the second OLED light source opposite the second light output surface FIG. 5b shows a light output distribution achievable with this embodiment when the first OLED light source is switched on and the second OLED light source is switched off. [0028] FIG FIG. 6a is a sketch corresponding to FIG. 5a, FIG FIG. 6b shows a light output distribution achievable with this configuration when both OLED light sources are switched on. FIG. 6b shows exemplary light beams representing the light profile with the first OLED light source switched on and the second OLED light source switched on;
    Fig. 1 shows a sketch of the basic structure of an arrangement according to the invention. The arrangement comprises a first OLED light source 1 and a second OLED light source 3.
    The first OLED light source 1 is preferably designed overall plate-shaped, so that it has a first large surface 2 and a second large surface 9 opposite thereto. The first OLED light source 1 is configured to generate a first light L1, the design being such that the first light L1 is output via the first large surface 2. The first large surface 2 is therefore also referred to below as the first light emitting surface 2 of the arrangement for emitting the first light L1. In Fig. 1, the first light L1 is only very schematically indicated by a small arrow.
    Manufacturing technology advantageous, the second large surface 9 of the first OLED light source 1 can be designed plan. The first OLED light source 1 can, but does not have to be transparent. Preferably, the first OLED light source 1 is not made transparent. This is manufacturing technology and lighting technology advantageous.
    The second OLED light source 3 is preferably designed overall plate-shaped, so that it has a first large surface 4 and a second large surface 8 opposite thereto. The second OLED light source 3 is configured to generate a second light L2, the configuration being such that the second light L2 is output via the second large surface 4. The second large surface 4 will therefore also be referred to below as the second light-emitting surface 4 of the arrangement for emitting the second light L2. In Fig. 1, the second light L2 is only very schematically indicated by a further small arrow.
    The arrangement is designed such that the first light L1 at least partially enters the second OLED light source 3 and is subsequently emitted via the second light emission surface 4. Preferably, the second OLED light source 3 is designed to be transparent for this purpose. Accordingly, the light emitted from the array generally includes the first light L1 and the second light L2; In particular, the design is such that the light emitted by the arrangement of light from the first light L1 and the second light L2 composed, so in particular has no further light component.
    The OLED light sources 1, 3 may in particular be "OLED panels" or "OLED modules".
    Fig. 1 shows the two OLED light sources 1, 3 in a cross section. Preferably, the arrangement is designed such that the second large surface 8 of the second OLED light source 3 extends at least in a first approximation in a first plane E1 and the first light emitting surface 2 extends at least to a first approximation in a second plane E2, which is preferably parallel to the first level E1 is oriented. In this case, preferably between the two planes E1 and E2 and thus in particular between the two OLED light sources 1.3 a distance d and thus a gap formed.
    In particular, the design may be such that the first OLED light source 1 and the second OLED light source 3 are arranged parallel to each other.
    Further, the arrangement comprises a control device 5 for independent control of the first OLED light source 1 and the second OLED light source 3. In particular, the control device 5 may be configured to the first OLED light source 1 and the second OLED light source. 3 in such a way that the intensity of the first light L1 and the intensity of the second light L2 change in opposite directions.
    The second OLED light source 3 has a structured surface 6, 7 for influencing the direction of the first light L1 and / or the second light L2. As a result, the light output of the arrangement, in particular its directional distribution can be influenced particularly suitable.
    For this purpose, in particular, the structured surface 6, 7 may be formed at least partially on the second light-emitting surface 4 and / or at least partially on a surface opposite the second light-emitting surface 4, ie in particular on the second large surface 8 of the second OLED light source 3 In Fig. 1 corresponding structuring is indicated schematically by bars. As further indicated by the different lengths of the bars, it may be provided that on the second light emitting surface 4, a first patterning 6 is formed and on the opposite surface 8 of the second OLED light source 3, a second structuring 7, which differs from the first structuring 6 differentiates. As will be shown below, it can be provided, in particular, that the second light-emitting surface 4 has the structuring, but the opposite, second, large surface 8 of the second OLED light source 3 has no structuring, that is to say has a planar design. Furthermore, conversely, it may be provided that the second large surface 8 has the structuring, but the second light-emitting surface 4 has no structuring, that is to say has a planar design.
    The first OLED light source 1 can, in the sense of the structure shown so to speak, be regarded as a "primary OLED light source" and the second OLED light source 3 as a "secondary SEC-OLED light source", wherein by the secondary OLED light source - due to the structured surface 6, 7 - a "secondary optics" for the primary OLED light source 1 is formed.
    If only the first OLED light source 1 is turned on and, accordingly, the second OLED light source 3 is switched off, this results in a light output with a first directional distribution. This first directional distribution is particularly dependent on the structured surface 6, 7 of the second OLED light source 3. In general, this results in a directional distribution of the light output which deviates significantly from a Lambert distribution. If, however, only the second OLED light source 3 is switched on and, accordingly, the first OLED light source 1 is switched off, a light output with a second directional distribution, which differs fundamentally from the first directional distribution, results. This second directional distribution can in particular represent at least essentially a Lambert distribution.
    Characterized in that the two OLED light source 1, 3 can be controlled independently, it is possible to choose by using the control device 5 between the light output with the first directional distribution and the light output with the second directional distribution and in particular a light output effecting a directional distribution forming an intermediate stage between the first and second directional distributions. If it is an electrically controllable control device 5, which is designed to, the
    Intensities of the first light L1 and the second light L2 quasi continuously opposite to change, the light output can be "tuned" so to speak between the first directional distribution and the second directional distribution. A method according to the invention therefore comprises the following step: the first OLED light source 1 and the second OLED light source 3 are activated in such a way that the intensity of the first light L1 and the intensity of the second light L2 change in opposite directions.
    In Fig. 2a, a possible embodiment of the arrangement is sketched, in which on the second light emitting surface 4, the structured surface is formed by a lens structure, in particular a microlens structure 6. The second large surface 8 is unstructured in this example. Also, the first light exit surface 2 is designed here plan.
    Here are - only very schematically - light rays of the first light L1 indicated. After exiting via the first light emission surface 2, the first light L1 enters the intermediate space formed by the distance d between the two OLED light sources 1, 3, then at least partially enters the second OLED light source 3 - here via the second large surface 8 - And is further delivered via the second light emitting surface 4. The light beams of the first light L1 indicate the course of the light, which results when the first OLED light source 1 is switched on and the second OLED light source 3 is switched off. Accordingly, in this case, the intensity of the second light L2 is zero; So there are no light rays representing the second light L2.
    The first light L1 emitted by the first OLED light source 1 is refracted at the second large surface 8 of the second OLED light source 3 and subsequently coupled out via the microlens structure 6 and in this case predominantly directed forwards. The microprism structure 6, so to speak, causes a "forward diffraction".
    2b shows a light distribution curve which describes the directional distribution of the corresponding emitted light of the arrangement, here also referred to in the above-mentioned sense as "first" directional distribution R1. As a result of the structuring in the form of the microlenses 6, the light is predominantly directed in a forward direction-in this case in the direction of a surface normal N, which represents the orientation of the second light-emitting surface 4, if the structuring or the microprisms 6 are disregarded. In particular, the first directional distribution R1 is such that, compared to a Lambertian distribution, the proportion of the light in the forward direction is greater. The switched-off second OLED light source 3 acts here, so to speak, as "secondary optics".
    Fig. 3a shows accordingly the situation that arises when the first OLED light source 1 is turned off and the second OLED light source 3 is turned on. Here, correspondingly light beams are schematically drawn, which represent the second light L2. In Fig. 3b, the directional distribution is shown, which results in this case, here accordingly also referred to as "second" directional distribution R2. In the example shown, it is a Lambert distribution.
    Fig. 4a shows a case in which both the first OLED light source 1, and the second OLED light source 3 is turned on. Accordingly, light beams of the first light L1 and light beams of the second light L2 are drawn. FIG. 4b shows a directional distribution, in solid line, which in this case results as intermediate stage R3 between the first directional distribution R1 and the second directional distribution R2. Spotted are these two "extreme" directional distributions, ie the first directional distribution R1 and the second directional distribution R2 sketched.
    Preferably, the control device 5 is configured to control the OLED light sources 1, 3 such that the intensities of the first light L1 and / or the second light L2 can be reduced to zero. In this way, the directional distribution of the emitted light can be changed in a particularly wide range.
    In the figures 5a, 5b, 6a and 6b, a second possible embodiment is shown in a corresponding manner. Unless otherwise stated below, the above explanations also apply with reference to this embodiment. The reference numerals are used analogously.
    In contrast to the first embodiment mentioned above, here the structured surface 6, 7 is formed on the surface 8 of the second OLED light source 3 opposite the second light emission surface 4. The structuring is designed in the form of a serrated structure or prism structure 7, in particular a microprism structure. The second light emitting surface 4 is designed plan in this example.
    As indicated in Fig. 5a by the light rays of the first light L1, the first light L1 is here refracted by the prism structure 7 and directed in this way in lateral directions. If the first OLED light source 1 is switched on and the second OLED light source 3 is switched off, the first directional distribution R1 sketched in FIG. 5b can thus be achieved. This first directional distribution R1 is accordingly butterfly-like here.
    If only the second OLED light source 3 is switched on, a directional distribution which corresponds at least essentially to a lambertian distribution results once again.
    Figures 6a and 6b refer to the case that both OLED light sources 1, 3 are turned on, so that in turn a corresponding intermediate stage R3 of the directional distribution between the first directional distribution R1 and the corresponding second directional distribution R2 can be achieved. A "tuning" here leads to the direction distribution of the light output is more or less "spread" to the side.
    As a variation may further be provided that the two OLED light sources 1, 3 are designed such that they already have as such individual radiation characteristics that differ significantly from each other. In this case, one can "tune in" between these two emission characteristics.
    Furthermore, it is possible that the arrangement has more than two OLED light sources. Accordingly, in this case, preferably only that of the OLED light sources which is located on the side of the arrangement facing away from the light output is not made transparent.
    Furthermore, it is possible that all OLED light sources are transparent, and it is thereby possible that the light emission takes place on both sides and thus possibly a direct / indirect and controllable light source is formed.
    With the arrangement according to the invention can thus be achieved that the directional distribution of the light output of the arrangement is changed, in particular with the sole aid of the electrical control device. In this case, the directional distribution between a distribution which corresponds at least essentially to a lambertian distribution and a further directional distribution which deviates significantly from a Lambertian distribution, for example a butterfly distribution, can be tuned. Due to this property, the arrangement is particularly suitable as a light.
    权利要求:
    Claims (10)
    [1]
    claims
    An arrangement for emitting light, comprising - a first OLED light source (1) for generating a first light (L1), wherein the first OLED light source (1) has a first light emitting surface (2) for emitting the first light (L1), - A second OLED light source (3) for generating a second light (L2), wherein the second OLED light source (3) has a second light emitting surface (4) for emitting the second light (L2), wherein the design is such that the first light (L1) at least partially enters the second OLED light source (3) and is subsequently emitted via the second light delivery surface (4), a control device (5) for the independent control of the first OLED light source (1) and the second OLED light source (3), characterized in that the second OLED light source (3) has a structured surface (6, 7) for influencing the direction of the first light (L1) and / or the second light (L2).
    [2]
    2. Arrangement according to claim 1, wherein the first OLED light source (1) and the second OLED light source (3) are arranged parallel to each other.
    [3]
    3. Arrangement according to claim 1 or 2, wherein at least one of the two OLED Lichtquel len (1.3) is designed transparent.
    [4]
    4. Arrangement according to one of the preceding claims, which is designed such that between the first OLED light source (1) and the second OLED light source (3), a distance (d) is formed.
    [5]
    5. Arrangement according to one of the preceding claims, wherein the structured surface (6, 7) at least partially on the second light-emitting surface (4) is formed.
    [6]
    6. Arrangement according to one of the preceding claims, wherein the structured surface (6, 7) at least partially on a, the second light emitting surface (4) opposite surface (8) of the second OLED light source (3) is formed.
    [7]
    7. Arrangement according to one of the preceding claims, wherein the structured surface (6, 7) by a lens structure (6), in particular a microlens structure is formed.
    [8]
    8. Arrangement according to claim 7 in its back to claim 5, wherein a, the second light emitting surface (4) opposite surface (8) of the second OLED light source (3) is designed plan.
    [9]
    9. Arrangement according to one of the preceding claims, wherein the structured surface (6, 7) by a prism structure (7), in particular a micro-prism structure is formed.
    [10]
    10. A method for driving a device for light emission according to one of the preceding claims, comprising the following step: the first OLED light source (1) and the second OLED light source (3) are driven such that the intensity of the first light (L1 ) and the intensity of the second light (L2) change in opposite directions. For this 6 sheets of drawings
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    DE102010038363A1|2010-07-23|2012-01-26|Trilux Gmbh & Co. Kg|OLED light|
    DE102011079012A1|2011-07-12|2013-01-17|Ledon Oled Lighting Gmbh & Co. Kg|Light module with controllable light control|
    DE102016206681B3|2016-04-20|2017-08-31|Technische Universität Dresden|Light-emitting diode arrangement, method for operating a light emitting diode array, OLED display and method for operating an OLED display|
    DE102017218618A1|2017-10-18|2019-04-18|Bayerische Motoren Werke Aktiengesellschaft|Screen device, method for operating a screen device and method for planning a production plant|
    法律状态:
    2020-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20191031 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014221926.4A|DE102014221926A1|2014-10-28|2014-10-28|OLED arrangement for light emission|
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