• 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:
    An optical system for influencing the light emission of a light source has a pot-like reflector (20), which has a light exit opening (21), and a lens (10), which is adapted to a first portion of the light via the light exit opening (21) of the Reflector (20) in a preferred direction defined by the lens (10), wherein the lens (10, 60) is further adapted to deliver a second portion of the light laterally such that this portion falls on the reflector inner wall.
    公开号:AT16514U1
    申请号:T1762016U
    申请日:2016-07-14
    公开日:2019-11-15
    发明作者:Kohler Christian；Pieper Stephan；Ing Sebastian Schade Dr；Niederstätter Andreas
    申请人:Zumtobel Lighting Gmbh；
    IPC主号:
    专利说明:

    The present invention relates to an optical system which is provided for influencing the light output of a light source and has at least one pot-like reflector which forms a light exit opening through which light is emitted. Furthermore, the present invention relates to a luminaire in which a corresponding optical system is used, the luminaire in particular being a luminaire which is used outdoors.
    Luminaires with the help of which certain areas or objects are to be illuminated must inevitably have means by means of which the light generated by the lamps is emitted in a targeted manner into the area to be illuminated. These are generally additional optical elements to the illuminants, which influence the light by reflection and / or refraction in such a way that it is oriented in the desired manner in accordance with the lighting situation.
    One way to influence the light output in the desired manner are the reflectors already mentioned. It is often provided here that not a single large reflector is used, but instead several pot-like reflectors are joined together in a matrix to form a so-called grid, via which the light from the lamps is then emitted. While in the past larger lamps in the form of elongated fluorescent lamps or the like were used, LEDs are now generally used, in which case an LED lamp is usually assigned to each individual reflector pot. The lamps can each be individual LEDs or also clusters consisting, for example, of several differently colored LEDs, which then ultimately emit a mixed light in the desired color or color temperature.
    The design of the reflector is then such that, due to the shape of the reflector wall and the corresponding positioning of the light source relative to the reflector, all light rays are influenced in such a way that they can only leave the reflector within a certain angular range, the angular range being chosen in this way that the light is emitted in the desired direction. Outside of this area, which is primarily defined by the design of the reflector, on the other hand, there is almost no light emission, so that the light can be influenced very simply and effectively in this way. Reflector grids of this type are therefore used very frequently and in different fields of application, for example in order to implement so-called glare-free lighting or to avoid disruptive reflections on screen surfaces or the like.
    On the other hand, the complete limitation of the light output to the angular range specified by the reflector has the consequence that the lamp or the switched-on state of the lamp can only be recognized by an observer if he is in the solid angle range, in which the light output specified by the reflector takes place. If, on the other hand, the observer is outside this angular range, the light initially appears dark from his point of view.
    This in turn means that the eye of the observer at the transition from the non-illuminated area to the illuminated area causes a sharp increase in brightness to which the eye has to get used to within a very short time. This is often perceived as unpleasant, which is why attempts are often made to signal the on-state of the lamp to the observer on the one hand with the help of additional lighting effects and on the other hand to enable the observer's eye to at least to a certain extent the increased brightness that is in the illuminated area is to be adapted. These measures are often indirect or secondary light emission, which is achieved with the aid of additional light sources, which, for example, direct light onto the ceiling of a room in which the lamp is located, or light diffuse to the side
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    AT 16 514 U1 2019-11-15 Austrian patent office.
    Such measures for secondary light emission are associated with additional effort and are rather unusual or not feasible for outdoor lights. Here too, however, the problem often arises that abrupt increases in brightness should be avoided when transitioning from an unilluminated area to an illuminated area.
    The problem described above is not only in the use of reflector grids or pot-like individual reflectors, but can also arise with other types of optics. For example, so-called TIR lenses are very often used to influence the light from LEDs, which bundle the light emitted originally by the LED in a very wide angular range extremely efficiently, that is to say restrict it to a specific angular range. In this case too, there are strong differences in brightness at the transition between the non-illuminated area and the illuminated area, which are perceived as unpleasant.
    The present invention is therefore based on the object to provide novel ways of influencing the light output of a light source, which on the one hand allow the light to be emitted very efficiently in a desired area, but on the other hand avoid the problems described above.
    The object is achieved by an optical system which has the features of the independent claims. Advantageous further developments are the subject of the dependent claims.
    The solution according to the invention is based on the idea of influencing the light output of a light source, for example an LED, on the one hand using a pot-like reflector and on the other hand using a lens. It is particularly provided that the lens is designed in such a way that a first portion of the light is emitted essentially independently of the reflector in a preferred direction defined by the lens. Furthermore, however, the lens is additionally designed to emit a second portion of the light laterally in such a way that this portion falls on the inner wall of the reflector. This reflector wall is, in particular, designed to be diffusely reflective, so that it appears slightly brightened from a wide variety of viewing directions due to the second portion of light.
    Even at flat observation angles, at which a glare is to be excluded for an observer and accordingly the primary portion of the light is not emitted with the aid of the lens, the inner wall of the reflector appears to be slightly illuminated and can be recognized by an observer , This means that the observer can easily recognize that the lamp is switched on even before the area directly illuminated by the lens is reached, and accordingly differences in brightness during the transition to the area directly illuminated by the first portion are no longer perceived as disturbing.
    According to the present invention, an optical system for influencing the light output of a light source is proposed which has a pot-like reflector which has a light exit opening, and a lens which is designed to provide a first portion of the light via the light exit opening of the reflector to emit in a preferred direction defined by the lens, the lens also being designed to emit a second portion of the light laterally in such a way that this portion falls onto the inner wall of the reflector.
    In the solution according to the invention, the pot-like reflector fulfills less the task of restricting the light output to a certain angular range compared to previous luminaire grids, but rather now serves to emit a small amount of light diffusely in different directions in order to switch the luminaire on to make it recognizable. The actual light control, however, is carried out by the lens, so that here there is a completely new interaction of the two optical elements reflector and lens.
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    AT 16 514 U1 2019-11-15 Austrian Patent Office [0015] The lens can be a so-called TIR lens in the classic way. In this case, it then first has a so-called frustoconical collimator facing the light source. This can have a recess facing the light source, the jacket and bottom surface of which forms a light entry surface of the lens, the LED then being positioned in the region of this recess in a known manner.
    [0016] According to a first exemplary embodiment, the lens can then have an essentially planar light exit surface. In this case, the light is then preferably emitted in a direction which is essentially parallel to the vertical with respect to the plane of the light exit opening of the reflector. A brightening of the inner reflector wall by the second portion of the light can then be achieved, for example, by using scattered light which is emitted by the lens. This effect can also be specifically enhanced in that, for example, edge areas of the light exit surface of the lens are specifically provided with an appropriate scattering structure.
    As an alternative to this embodiment of a lens, however, provision can also be made for the first light component to be emitted in a direction which is inclined with respect to an axis perpendicular to the plane of the light exit opening of the reflector. This can be particularly desirable if e.g. the reflector is oriented vertically downwards, but with the help of the luminaire, for example, an asymmetrical light emission is to be achieved, as is desired in luminaires for street lighting or the like. In this case, lenses have to be used which cause asymmetrical light emission, which can be done, for example, by the fact that the light exit area of the lens has a so-called Fresnel structure. In order to be able to achieve the brightening of the reflector inner wall according to the invention with the aid of the second light component in this case as well, it can now be provided that a scattering or coupling-out structure is formed on the periphery of the Fresnel structure, via which the second light component is emitted. In this case, the lens is preferably arranged at least with its light exit region or the Fresnel structure within the reflector.
    The lighting effect according to the invention, namely that the switched-on state of the luminaire can be recognized from a wide variety of viewing directions with the aid of the illuminated reflector inner wall, is particularly effective when the reflector is designed to be diffusely scattering. However, it has been shown that a particularly appealing lighting effect can be achieved if, in addition, a pot-like insert which can be inserted into the reflector and is made of a transparent but also slightly diffusely scattering material is used. This insert, which corresponds to the inner contour of the reflector with its outer contour, is thus in contact with the inner walls of the reflector, but already diffuses the second part of the light falling on it in various ways, with the scattering particles on the one hand and the transparent material of the insert on the other create an optical depth effect that makes the insert appear slightly glowing overall. This gives the lamp according to the invention a particularly appealing appearance when switched on.
    The use of this additional insert is also not absolutely necessary in combination with the lens described above. Rather, such an application could also be used in other optical systems, which is why this idea is also the subject of an independent, independent claim.
    The so-called glow reflector insert according to the invention, which preferably has a constant wall thickness, can be formed, for example, from PMMA or PC.
    According to a preferred embodiment, the optical system is designed such that it has a plurality of reflectors, which are arranged in a matrix and together form a corresponding grid. The reflectors can in this case be connected to one another at least partially in one piece. If the above-mentioned additional inserts made of the transparent and diffusely scattering material are then used, they are also preferably made in one piece so that they are in a corresponding manner away from the light
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    AT 16 514 U1 2019-11-15 Austrian patent office attached to the grid on the outlet side and can be locked with it, for example.
    As already mentioned, a preferred application example of the invention is a lamp in the outside area. It can be both a lamp that emits targeted light in a desired area, for example to illuminate an object or the like located in this area. In the same way, however, a luminaire can also be realized, which is used, for example, to illuminate a street or a sidewalk and accordingly accordingly results in an overall asymmetrical light emission, which enables illumination of a longer section of the street.
    In the following, the invention will be explained in more detail with reference to the accompanying drawing. Show it:
    Figures 1 and 2 Views of a first embodiment of a lamp in which the optical system according to the invention is used; Figures 3 to 5 Views of a single illuminant assembly of the luminaire responsible for the light generation; Figures 6 and 7 Views of a reflector grid, which is part of the lamp assembly shown in Figures 3 to 5; FIG. 8 a side view of a glow insert according to the invention for the reflector grid; FIG. 9Figures 10 to 12 the process of assembling the lamp assembly;Views of a lens according to the invention, with the help of which light is emitted in a preferred direction on the one hand and on the other hand the reflector walls are illuminated; FIG. 13FIG. 14 an enlarged view of the lens of Figures 10 to 12;a second embodiment of a lamp in which the optical system according to the invention consisting of a reflector and a glow insert can be used and Figures 15 and 16 Views of an alternative lens used in this second light.
    Figures 1 and 2 first show two perspective views of a first lamp intended for outdoor use, which is generally provided with reference numeral 100 in the figures. It is a luminaire whose optical system - as will be explained in more detail below - is designed in such a way that asymmetrical light emission is achieved in such a way that, seen in the longitudinal direction L of the luminaire 100, the emitted light is very greatly expanded. If such a lamp is fastened, for example, to a columnar support or to a house wall, then the street area below it can be illuminated on both sides over a greater distance. Accordingly, the lamp 100 shown is particularly suitable for illuminating streets, roadways and / or sidewalks.
    Basically, the lamp 100 is constructed in two parts with an approximately cuboid first module 110 and a second module 120, the so-called lamp module, which is also cuboid and is attached to the first module 110. The first module 110 in this case contains a large part of the electronic components of the luminaire 100, in particular the necessary means for converting the general supply voltage into an operating voltage suitable for operating the lamps. In particular, this can be a correspondingly designed LED converter.
    The luminaire 100 is fastened to a suitable carrier via a connection region 115 which is formed on a rear wall 111 of the first module 110. about
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    AT 16 514 U1 2019-11-15 Austrian patent office this connection area 115 also connects to external power supply lines, whereby according to a preferred variant it can also be provided that the connection area 115 defines an axis of rotation R around which - at least in a certain angular range - the first module 110 and thus the lamp 100 as a whole can be rotated or wasted.
    The illuminant module 120 is also cuboidal in shape as shown and, in the longitudinal direction, has comparable dimensions to the first module 110, but is arranged slightly offset from it for aesthetic reasons. The attachment of the lamp module 120 to the first module 110 can be rigid. As an alternative to this, however, it would also be conceivable to design the connection in such a way that, in accordance with the arrow indicated, the lamp module 120 can be pivoted about an axis which runs parallel to the longitudinal direction L. Here, too, the connection can be made such that the pivoting of the lamp module 120 is restricted to a certain angular range. In the case of use as a luminaire for street lighting, the light emission can then be adapted to the distance between the road to be illuminated and the carrier to which the luminaire 100 is attached, for example by pivoting.
    In the following, the configuration of the lamp module 120 is to be explained primarily, since this contains the optical components according to the invention.
    As can be seen in FIG. 1, the lamp module 120 has a matrix-like arrangement of lamps and associated optical elements within the cuboid housing. These optical elements include a grid-like reflector arrangement, the light exit opening of the lamp module 120 being covered by a transparent pane 125. This transparent pane 125 primarily serves to protect the components responsible for generating the light from external influences, but it preferably does not influence the light output of the luminaire 100.
    The grid-like design of the optical means, which can be seen in FIG. 1, is achieved by the flat joining together of individual so-called lamp assemblies, as shown in FIGS. 3-5. Each assembly identified by reference numeral 50 has four individual illuminants in the form of LEDs and associated optical elements for influencing the light output. This means that in the luminaire 100 shown in FIGS. 1 and 2, a total of eight corresponding illuminant assemblies 50 are used, which are arranged in two adjacent rows of four assemblies 50 each. Of course, depending on the size of the lamp, the number and arrangement of the lamp assemblies 50 can also be selected accordingly. As will be explained in more detail below, the illuminant assemblies 50 are of identical design apart from the orientation of the lenses used.
    Each assembly, as can be seen in FIGS. 3-5, initially has a carrier element in the form of an approximately square circuit board 55, on which the LEDs responsible for the light generation and not recognizable in the figures are initially arranged. These can be single LEDs and possibly also LED clusters, which ultimately emit a mixed light in the desired color.
    The circuit board 55 is also used to hold the other optical components that are responsible for influencing the light output. These are initially lenses 10 and pot-shaped reflectors 20. Both the lenses 10 and the reflectors 20 are preferably connected to one another in order to keep the number of individual parts when assembling the lamp 100 as small as possible. In particular, however, the lenses 10 could possibly also be present as individual components. However, the four pot-like reflectors 20 are preferably joined together to form the 2x2 grid 30 shown in isolation in FIGS. 6 and 7, since otherwise a correspondingly coordinated positioning of the individual reflectors 20 would be very complex and tedious.
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    AT 16 514 U1 2019-11-15 Austrian Patent Office [0042] The individual reflectors 20 of the grid 30 are each approximately truncated pyramid-shaped and each have a square light exit opening 21 and a circular bottom opening 22 opposite this. A special feature here is that the light exit openings 21 of the individual reflectors 20 do not have a square or rectangular shape, but instead represent an irregular square, so that a distorted truncated cone shape also results for the reflector 20. Overall, however, the four light exit openings 21 of the 2x2 reflector grid 30 form a square. This is primarily a measure which gives the luminaire 100 an appealing and interesting appearance, since the light output for illuminating, for example, a section of a street is primarily provided by the lenses 10 described in more detail below. Accordingly, it would also be possible, for example, to choose square light exit openings 21 for the individual reflectors 20. The reflector grid 30 formed from the four reflectors 20 is then fastened to the carrier board 55 via a locking pin 31 (see FIG. 7) provided on its underside, it also being possible, of course, to provide other fastening measures.
    In contrast to classic reflector grids, the reflector grids 30 in the present solution according to the invention, however, only represent a secondary element for the light emission of the lamp 100. The light emission is primarily determined by the lenses 10 individually assigned to the light sources. The shape of the lenses can be seen in particular from FIGS. 10-12, which are so-called TIR (total internal reflection) lenses, which initially have a collimator 11 facing the light source. This collimator 11 is, as shown in the present example, rotationally symmetrical in the form of a truncated cone and has an approximately circular recess 12 on its light entry side. The positioning takes place in such a way that the LED projects into this recess 12 and accordingly all the light from the LED falls into the collimator 11. Internal total reflection of the light then takes place on the lateral surface of the collimator 11 in a known manner, so that it is initially aligned essentially in parallel. Basically, such TIR lenses with a collimator facing the light source are already known.
    In the present example, the light exit region 15 of the lens adjoining the collimator 11 then has a fresnel-like structure 16, with the aid of which the light is emitted asymmetrically in a preferred direction. The light exit area 15 is connected to the collimator 11 via a disk-like intermediate area 14, which, however, does not have any significant influence on the light output, but rather serves primarily to completely fill the bottom opening 22 of the associated pot-like reflector 20 when the optical system is in the assembled state. As can be seen in FIG. 4, the reflectors 20 are then arranged at a distance from the circuit board 50 and the light sources, this distance being bridged by the collimator 11 of the respective lens 10.
    The fresnel-like structure 16 of the lens 10, which can be seen particularly well in FIGS. 10 and 12, brings about, as already mentioned, an asymmetrical light emission in a preferred direction. This is achieved in particular by the inclined top surfaces of the individual rib-like Fresnel segments, on which the light is again preferably totally internally reflected and then, as can be seen in FIG. 12, is decoupled. The orientation of the lens 10 and thus the preferred direction in which the light is primarily emitted can also be seen by an arrow-like marking 14a formed on the disc-like intermediate region 14, so that the direction in which the light is emitted can be recognized immediately. The light output of the lens 10 via the Fresnel structure 16 is preferably such that it is no longer or only insignificantly influenced by the reflector 20 surrounding the lens 10.
    As can be seen from the markings 14a shown in FIG. 5, it is preferably provided that the four lenses 10 of an individual illuminant assembly 50 are each aligned identically, so that an illuminant assembly 50 emits light uniformly in a particular preferred direction. The lamp shown in Figures 1 and 2
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    AT 16 514 U1 2019-11-15 Austrian patent office
    100 illuminant assemblies 50 used then differ in terms of the orientation of the associated lenses 10, so that each illuminant assembly 50 emits light in a slightly different angular range. A superimposition of the eight light emission directions of the illuminant assemblies 50 that result from this then leads overall to the longitudinally stretched and thus asymmetrical light emission, as is aimed for, as already mentioned, for street lighting.
    Of course, it would also be conceivable to individually align a single lens 10 in a desired direction and thereby achieve the asymmetrical light emission. The variant shown, in which all the lenses 10 of a lamp assembly 50 have the same orientation, is advantageous, however, in that the failure of a single LED does not have a negative effect on the total light output of the lamp 100 and there is no fear that partial areas will then occur of the total area to be illuminated are no longer illuminated.
    The overall design of a lamp assembly 50 can then be seen, for example, in the illustration in FIG. 4. That is, the light of each LED is first coupled into the collimator 11 of the associated lens 10 and then emitted via the fresnel-like light coupling-out area 15 of the lens 10. While the collimator 11 is still arranged below or outside the pot-like reflectors 20, the light decoupling region 15 projects into the reflector space. When assembling a lamp assembly 50, the lenses 10 are first placed on the LEDs and then the reflector grid 30 is attached in the next assembly step.
    With the measures described so far, an area to be illuminated can thus be efficiently illuminated by the lamp 100 according to the invention. However, there is still the problem described at the outset that an observer who is outside the area directly illuminated by the lenses 10 cannot or only with difficulty can be recognized whether the lamp 100 is activated at all or not. With the help of the additional optical measures described below, this problem is solved in an elegant manner.
    A peculiarity of the lenses 10 used is namely that, although primarily the light is emitted as desired in the preferred direction defined by the Fresnel structure 16, a targeted at least a small proportion of the light is directed laterally or over the circumference of the light exit area 15 is emitted such that it falls on the walls of the pot-like reflector 20. Additional decoupling surfaces or structures 17, which are shown in FIG. 13, are responsible for this effect and are responsible for ensuring that a small proportion of the light is also emitted in other directions, in particular also in the opposite direction to the preferred light emitting direction. The (surface) proportion of these coupling-out surfaces 17 is relatively small, since only a very small proportion of the light is to be used to brighten the surrounding reflector walls. In principle, this effect would also be achievable by appropriate roughening or by adding scattering particles into the lens material, since such a scattering, however, counteracts the effect of the Fresnel structure 16, the shape shown with the aid of the additional light decoupling surfaces or light decoupling structures 17 is preferred , Ideally, however, the lateral coupling of the second light component should take place over the entire circumference of the light exit area, so that the entire reflector walls are actually completely illuminated.
    Each lens 10 thus ensures that a first - preferably large - portion of the light is emitted in the desired preferred direction and a second - preferably small portion falls as far as possible over the entire circumference onto the walls of the pot reflector 20. A diffusion of the light that is as diffuse as possible should then take place here, which causes the reflector walls to appear illuminated even when the luminaire 100 is switched on, even under very flat observation angles. That is, also for people who are outside the actually illuminated area, i.e. in the area directly illuminated by the lenses 10, the reflector walls appear brighter and it is accordingly clearly recognizable whether
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    AT 16 514 U1 2019-11-15 Austrian patent office the lamp is activated or not. This also enables the eye to adapt to the brightness transition at an early stage when approaching the illuminated area, so that strong or disruptive glare then no longer occurs during the transition between an area not illuminated by the lenses and an illuminated area.
    This lighting effect according to the invention could thus be achieved, for example, by designing the walls of the reflector in a diffusely scattering manner in addition to the special design of the lens. In other words, in a first variant it would be conceivable for the reflector grid to be formed from a material which causes diffuse scattering, or the reflector surfaces could be provided with a diffusely scattering coating.
    [0053] In the present case, however, it is particularly preferably provided that the diffuse scattering of the second light component takes place by means of an additional reflector insert, which can be seen in FIGS. 8 and 9 and is provided with the reference symbol 40. The insert 40 is similar in terms of its design and shape to the reflector louvre 30, that is to say in turn has four pot-like, truncated cone-shaped sections 45, each of which forms a light exit opening 46 and opposite it a circular entrance opening 47. The insert 40 is also similar to the reflector grid 30 with regard to the asymmetrical design of the openings 46. The dimensions of the insert 40 are now chosen such that the outer contour of the insert 40 corresponds to the inner contour of the reflector grid 30, so that the insert 40 is form-fitting from the top the reflector grid 30 can be used. Just like the reflector grid 30, the insert 40 is also made in one piece, whereby in the case of using individual reflector pots, the use of individual inserts would also be conceivable here.
    This reflector insert 40 now consists of a transparent material, for example PMMA or PC, which is additionally provided with scattering particles, so that the insert 40 as a whole can bring about the above-mentioned, desired scattering of the second light component. However, due to the fact that the insert 40 is formed from a transparent material, the light is scattered not only on its surface, but also on the scattering particles distributed within the material of the insert 40 and possibly also on the surface of the reflector pot underneath, so that an optical very appealing depth effect is achieved and in particular the impression is given that the insert 40 as a whole glows slightly when the lamp 100 is activated. The insert 40 preferably has essentially a constant wall thickness and is inserted into the reflector grid 30 from the top in the final assembly step when the assembly 50 is joined, as can be seen in FIG. 9.
    With the help of these measures, not only is the problem on which the invention is based, namely that the switch-on state of the lamp cannot be recognized from a flat angle of view, but moreover a particularly appealing appearance is given, particularly when the lamp is switched on.
    It should be noted that this special combination of reflector and associated light-scattering transparent insert is not necessarily limited to the lens shape shown, but can also be used with other primary optics.
    For this purpose, a further exemplary embodiment of a lamp 200 according to the invention is shown in FIG. 14, which basically corresponds in its structure to the first lamp 100. Again, there is therefore a two-part configuration with a first module 210, which contains the electronic components, and a second module 220, which contains the lamps, and the two modules 210, 220 can be coupled such that the lamp module 220 can be pivoted , One difference in the present case is that the number of light sources in the illuminant module 220 is smaller and only 16 light sources are used here, which are distributed over four illuminant assemblies.
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    AT 16 514 U1 2019-11-15 Austrian patent office The basic structure of the lamp assemblies is again identical to that of the lamp according to FIGS. 1 and 2, although now no asymmetrical light distribution is aimed for, but instead the light is concentrated rather on one certain area to be delivered. The consequence of this is that in the luminaire according to FIG. 14, the illuminant assemblies have differently designed lenses. In particular, lenses such as those shown in FIGS. 15 and 16 are now used here.
    These lenses 60 in turn have a frustoconical collimator section 61 which has a recess 62 facing the light source, the bottom and outer surface of which forms the light entry surface of the lens. In contrast to the lenses 10 of FIGS. 10-13, however, no fresnel-like light emission region 15 is now required, through which the light is emitted asymmetrically. Instead, the light exit region 65 of the lens 60 of FIGS. 15 and 16 is formed by a flat surface, via which the light bundled by the collimator 61 is emitted. Ultimately, this has the consequence that the light emission takes place parallel to the axis of rotation of the collimator 61, the primary light emission of the lens 60 subsequently also not being influenced or only very slightly influenced by the reflector in this case.
    In the bottom area of the collimator 61, a plate-shaped holding part 67 is now provided, which enables a defined positioning of the lens 60 on the carrier element of the lamp assembly. In the assembled state of the illuminant assembly 50, the collimator region 61 of the lens 60 ends with the associated light exit surface in the region of the bottom opening 22 of the associated pot reflector 20.
    In this variant, too, the light output is primarily determined by the lens 60 itself, less by the reflector 20. Again, however, scattered light can occur, which is used to brighten the peripheral reflector walls of the pot-like reflector 20. In this case too, therefore, the reflector 20 can either be designed to be diffusely scattering or, as in the luminaire in FIGS. 1 and 2, a corresponding reflector insert 40 can also be provided within the reflector grid 30. In this case, the scattered light that is not completely suppressed anyway and that is emitted by the lens 60 can be used. It would also be possible to emit a small amount of light in a targeted manner, for example by introducing scattering particles or structures in the edge region of the light exit surface 65, in such a way that it illuminates the reflector walls. That is, the advantageous effect can also be achieved with this second light 200 shown that a person outside the illuminated area can easily recognize the switched-on state of the light 200.
    Ultimately, the concept according to the invention thus allows light to be emitted extremely effectively into a desired area, despite everything, however, to avoid the disadvantages which have hitherto resulted from strong light control. The use of the optical system according to the invention is of course not restricted to luminaires for outdoor use, but can be carried out with any type of luminaire.
    权利要求:
    Claims (10)
    [1]
    1. An optical system for influencing the light output of a light source, comprising • a pot-like reflector (20) which has a light exit opening (21), • a lens (10) which is designed to transmit a first portion of the light via the light exit opening (21 ) emitting the reflector (20) in a preferred direction defined by the lens (10), the lens (10, 60) also being designed to emit a second portion of the light laterally in such a way that this portion falls onto the inner wall of the reflector.
    [2]
    2. Optical system according to claim 1, characterized in that the emission of the first light component is essentially not influenced by the reflector (20).
    [3]
    3. Optical system according to claim 1 or 2, characterized in that the lens (10, 60) has an approximately frustoconical collimator region (11, 61) facing the light source.
    [4]
    4. Optical system according to claim 3, characterized in that the collimator region (11, 61) has a recess (12, 62), the outer surface and bottom surface of which form a light entry surface of the lens (10, 60).
    [5]
    5. Optical system according to one of the preceding claims, characterized in that the lens (60) has an essentially planar light exit surface (65).
    [6]
    6. Optical system according to one of claims 1 to 4, characterized in that the preferred direction defined by the lens (10) for emitting the first light component is inclined relative to an axis perpendicular to the plane of the light exit opening (21) of the reflector (20) ,
    [7]
    7. Optical system according to claim 6, characterized in that a light exit region (15) of the lens (10) has a Fresnel structure (16).
    [8]
    8. Optical system according to claim 7, characterized in that on the circumference of the Fresnel structure (16) a scattering structure or scattering surfaces (17) is or are formed, via which the second light component is emitted.
    [9]
    9. Optical system according to one of claims 6 to 8, characterized in that the lens (10) is arranged at least with its light exit region (15) within the reflector (20).
    [10]
    10. Luminaire with lamps arranged in a matrix, which are formed in particular by LEDs, and an optical system assigned to the lamps according to one of the preceding claims.
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    同族专利:
    公开号 | 公开日
    WO2017129503A1|2017-08-03|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20030202241A1|2000-10-17|2003-10-30|Simon Blumel|Optical device|
    US20040027833A1|2002-07-04|2004-02-12|Koito Manufacturing Co., Ltd.|Vehicle lamp|
    US20110255290A1|2010-04-16|2011-10-20|Phoenix Electric Co., Ltd.|Light emitting device|
    CN202188357U|2011-08-17|2012-04-11|惠州雷士光电科技有限公司|Led lighting module|
    US20120327655A1|2011-09-09|2012-12-27|Xicato, Inc.|Led-based light source with sharply defined field angle|
    EP2650597A2|2012-04-10|2013-10-16|ERCO GmbH|Lamp|
    DE19615388A1|1996-04-18|1997-10-23|Zumtobel Licht|Luminaire with a particularly small-volume lamp|
    WO2003088195A1|2002-04-17|2003-10-23|Kabushiki Kaisha Box|Surface light emitting device|
    DE102004024599A1|2004-05-13|2005-12-08|Christian Kast|Reflector for e.g. headlight, has reflection surface shaped so that part of light impinging reflector is reflected in lighting direction, and reflector body shaped so that part of light impinging reflector passes via body|
    US7275849B2|2005-02-25|2007-10-02|Visteon Global Technologies, Inc.|LED replacement bulb|
    WO2011055519A1|2009-11-06|2011-05-12|パナソニック株式会社|Spot light source and bulb-type light source|
    DE102010039306A1|2010-08-13|2012-02-16|Zumtobel Lighting Gmbh|Arrangement for emitting light with light guide element and reflector|
    DE102010041478A1|2010-09-27|2012-03-29|Zumtobel Lighting Gmbh|Arrangement for directed light emission|
    DE102013221163A1|2013-10-18|2015-04-23|Zumtobel Lighting Gmbh|Optical system for an LED light source and luminaire with such an optical system|CN210687896U|2019-09-30|2020-06-05|欧普照明股份有限公司|Light distribution assembly and lighting lamp|
    DE202020101683U1|2020-03-30|2021-07-01|Zumtobel Lighting Gmbh|Luminaire with light source and associated optics|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016201347.5A|DE102016201347A1|2016-01-29|2016-01-29|Optical system for influencing the light output of a light source|
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