EP3527880A1 - Luminaire - Google Patents
Luminaire Download PDFInfo
- Publication number
- EP3527880A1 EP3527880A1 EP19156893.0A EP19156893A EP3527880A1 EP 3527880 A1 EP3527880 A1 EP 3527880A1 EP 19156893 A EP19156893 A EP 19156893A EP 3527880 A1 EP3527880 A1 EP 3527880A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lens
- luminaire according
- support surface
- channel
- steering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a luminaire having at least one LED operable to emit visible light and at least one lens operable to direct the emitted light.
- Luminaires designed for lighting can be realized in the form of outdoor lights, such as headlamps, street lights, decorative outdoor lights, tunnel lights or in the form of interior lights, such as hall lights or office lighting.
- Inventive lights are also used for aisle lighting, shelf lighting and wall washer. They have at least one LED as the light source and at least one lens for directing the light.
- non-photoconductive side surfaces are also formed on the clear lens bodies which serve to direct the light.
- the lamps may also be pre-set with light-directing or light-influencing elements, such as additional lenses, apertures, lenses or the like.
- linear lenses designates those lenses which are essentially mirror-symmetrical with respect to a plane of symmetry, without being rotationally symmetrical.
- the LED designed for emitting the visible light can be arranged symmetrically or asymmetrically with respect to symmetry axes of the lenses, provided that corresponding axes of symmetry can be seen. If a plurality of LEDs are provided, these may be arranged along a straight line or also along a plurality of rows aligned parallel or else with any desired orientation.
- the lenses may also have a teardrop shape. They can be connected to each other via arms or a plate, with which they may be made in one piece. They can be arranged on an LED array. With the measures described and known from the prior art, the light emitted by the LED or the LEDs can be directed with regard to the intended illumination purpose. However, this is in many cases associated with a lot of effort.
- the object of the invention is to provide a luminaire with which a lighting corresponding to the desired lighting purpose can be realized by simple means.
- these objects are achieved by a refinement of the known luminaires, which is essentially characterized in that at least one steering transition between a region of higher optical density and a region of lower optical density is formed in the lens used to direct the emitted light.
- this arrangement therefore, no additional optical elements, such as superior lenses, diaphragms or the like needed to obtain the desired illumination. It suffices if the lens itself is provided with suitable transitions between areas of low optical density and areas of higher optical density so as to provide adequate and to realize the lighting purpose corresponding light control.
- the steering transitions can be used within the scope of the invention to produce a shield, z. B. longitudinal and / or transverse to a linear lens or asymmetrically in one or more specific directions, for example in outdoor lighting, the reduction of light in a side facing away from the road area, the generation of a highly asymmetric light distribution and the light control on a more compact space with a Lens effect.
- a shield, z. B. longitudinal and / or transverse to a linear lens or asymmetrically in one or more specific directions for example in outdoor lighting, the reduction of light in a side facing away from the road area, the generation of a highly asymmetric light distribution and the light control on a more compact space with a Lens effect.
- a wallwasher for lighting shelves and the like.
- At least one LED and at least one lens can also be arranged on a common carrier surface, such as a boundary surface of a circuit board, in luminaires according to the invention.
- the LED for the complete utilization of the entire lens volume in the sense of the desired light control can be partially covered, but preferably completely covered by the lens, in particular in a cavity formed between the lens and the support surface or circuit board.
- the lens may have a convex surface area preferably arranged on its side facing away from the support surface.
- a steering transition manufacturing technology can be made particularly simple when at least one is provided starting from the convex surface area in the direction of the support surface extending slot or notch-like indentation to form a steering transition.
- the region of higher optical density is formed by the lens material, while the region of lower optical density is formed by the air in the recess.
- the steering transition may also be formed by one or more channels passing through the lens. Also in this case, the region of higher optical density is formed by the lens material, while the region of lower optical density is formed by air in the channel.
- the desired light guidance can be optimized by profiling at least one boundary surface of the indentation and / or the channel and / or by aligning the surfaces bounding the indentation and / or the channel to one another.
- At least one boundary surface of the indentation and / or the channel can be arched and / or profiled.
- a profiled Design of the boundary surface of the indentation and / or the channel may be formed on the profiled boundary surface a parallel or transverse to the support surface extending prism. It is also envisaged to provide both a prism extending parallel to the boundary surface and a prism extending transversely to the boundary surface of the support surface.
- a scattering device can be realized by roughening a boundary surface of the recess and / or the channel and / or by an admixture of scattering material in the lens material. If a lateral light emission, ie a light emission in a direction parallel to the support surface direction is desired, for. As in the context of a wall brightening, can be provided in the lens between the steering transition and the support surface, ie when the steering transition does not extend over the entire thickness of the lens material, a passage area without steering transition.
- the light passing through the passage region can be directed further in the desired direction by additional optical elements, in particular in the cover.
- the light passing through the passage region can be used, for example, for ceiling lighting. It is also possible to divert the emitted light in a direction away from the carrier surface, ie in the direction away from the light emission direction of the LED side facing away from the board.
- an arrangement can be selected in which a projection of the steering transition, the indentation and / or the channel on the preferably flat support surface in a direction perpendicular to the support surface projection direction outside a projection of the LED is arranged on the support surface.
- the lens is equipped with two, three or more steering transitions, indentations and / or channels.
- a luminaire according to the invention can have two, three or more LEDs arranged on a common carrier surface, which can also be combined as an LED array on a circuit board surface.
- three or more LEDs may be arranged along a straight line and at least one lens may be embodied approximately mirror-symmetrically with respect to a plane containing the straight line and arranged perpendicular to the carrier surface.
- Such a lens may be designed as a so-called linear lens, which has approximately the same cross-sectional area outside the indentations and channels in each plane extending perpendicular to the straight line.
- the region of higher optical density can comprise a plastic and / or an organic solid, and preferably comprise PMMA, PC, PP, silicon and / or plastics mixed with oxides.
- the region of lower optical density can be formed by the air filling the recess and / or the channel.
- the lens may have air inclusions, in particular spherical air inclusions, to form the steering transitions.
- the luminaire shown comprises a diode 15 arranged on a carrier 10, for example a printed circuit board, and a lens 1, the diode 15 being accommodated in a cavity formed between the material of the lens 1 and the material of the carrier 10, which is separated from a refractive surface B is limited.
- a recess 20 is formed, which is bounded by two flat boundary surfaces S1 and S2.
- the recess 20 extends over more than 50% of the thickness of the lens 1 in the region of the indentation in a direction perpendicular to the support surface 12 of the carrier 10 extending direction.
- a passage region 50 is formed between the indentation 20 and the support surface 12, which serves for the lateral radiation of the light emitted by the light-emitting diode 15.
- the flat boundary surfaces S1 and S2 of the recess 20 include an acute angle with each other. These flat boundary surfaces S1 and S2 are partially reflective depending on the angle of the incident light (total reflection at S1, Fresnel reflection at S2). A part of the light emitted from the LED 15 can also be refracted at the boundary surfaces S1, S2 and B.
- the light penetrating through the passage region 50 can be deflected with the aid of additional optical elements. In the case of a cover of the lamp by a housing (not shown), this light can be deflected by an additional deflection in the desired direction.
- the side of the carrier 10 facing away from the lens can also be illuminated.
- the recess 20 has a total of a linear course, wherein a projection of the recess 20 is disposed on the support surface 12 of the carrier 10 in addition to a projection of the light emitting diode 15 on the support surface 12.
- the projection of the indentation 20 is even arranged next to the light emitting diode 15 containing cavity between the lens 1 and the support surface 12.
- the lens 1 is executed as drop-shaped.
- Fig. 2 illustrated embodiment of the invention differs essentially by the basis of the Fig. 1 explained embodiment that on the boundary surface S2 'of the recess 20 prism-like structures are executed, which are approximately parallel to Longitudinal direction of the indentation.
- the light guidance in a direction perpendicular to the boundary surface S1 direction compared to a flat boundary surface, as in S2 in Fig. 1 is shown to be amplified.
- the tips and bottoms of the according to the embodiment Fig. 2 the boundary surface S2 'executed prisms are in the in Fig. 1 shown cutting plane on parallel lines.
- two prisms are arranged from the bottom of the recess 20 in the direction of the convex boundary surface of the lens 1 ', wherein the apex angle of the convex boundary surface adjacent prism is less than the apex angle of the support surface 12 adjacent prism. If three or more superimposed prisms are provided, the arrangement can be chosen such that the point angle decreases, starting from the bottom of the recess 20 in the direction of the convex boundary surface of prism to prism.
- the recess 20 can expand starting from the center taken in the direction of the longitudinal axis in the direction of the boundary surfaces of the lens.
- the Fig. 1 and 2 illustrated embodiments of the invention include the boundary surfaces S1 and S2 a point angle with each other.
- Fig. 3b shows a perspective view of the lamp with a teardrop-shaped lens according to Fig. 3a .
- the tips of the prisms extend approximately parallel to the support surface 12 of the carrier 10th
- Fig. 4 illustrated embodiment of the invention differs essentially from the basis of the Fig. 3 explained embodiment that the prisms provided on the boundary surface S2 '"have approximately perpendicular to the support surface 12 extending top lines
- Fig. 4 illustrated embodiment of the invention is as well as in in Fig. 1 illustrated embodiment, a passage area between the recess 20 and the support surface 12 is formed.
- the gap 20 widens from its edge facing the passage region in the direction of the convex boundary surface of the lens 1 '', thereby facilitating demoulding of the lens in the manufacturing process.
- desired light effects can be supported.
- Fig. 5 illustrated embodiment of the invention differs significantly by the basis of the Fig. 4 illustrated embodiment of the invention that the boundary surface S2 "" of the recess 20 is provided with fresnel-like prisms, which as well as the prisms in the basis of Fig. 4 illustrated embodiment run approximately perpendicular to the longitudinal direction of the gap. Also at the in Fig. 5 illustrated embodiment of the invention, the gap opens to facilitate the removal of the lens from his the passage area facing edge in the direction of the convex surface area.
- a teardrop-shaped lens 1 "'" arranged on a support 10 LED is covered by a teardrop-shaped lens 1 "'", wherein the lens 1 ""' is penetrated by a parallel to the support surface 12 of the carrier 10 extending channel.
- the boundary surfaces S3 and S4 of the channel 40 include a point angle with each other.
- a tangent to the limiting surface B delimiting the LED 15 includes a point angle with the boundary surfaces S3 and S4 of the channel 40.
- the boundary surfaces S3 and S4 of the channel 40 also form an apex angle with an outer boundary surface B ', which is penetrated by the light rays passing through the channel 40.
- the boundary surfaces S3 and S4 are partially reflective depending on the angle of the incident light (total reflection at S3, Fresnel reflection at S4). Part of the light may also be refracted at the surfaces S3 and S4, B and B '.
- the boundary surfaces S3 and S4 of the channel 40 are at the in Fig. 6 illustrated embodiment of the invention executed substantially flat. In this case, however, Entformungsschrägen are provided in the longitudinal direction of the channel 40, such that the channel extends from an opening with respect to the longitudinal direction of the channel 40 central portion to its outer ends.
- a passage region 50 is provided between the channel 40 and the support surface 12, which similarly as in the reference to the Fig. 1 explained embodiment favors a lateral light emission.
- the width of the channel can also taper starting from an edge facing the passage region 50 in the direction of the outer boundary surface of the lens 1 "'". In another embodiment, however, it can also be provided that the width of the channel increases in the direction mentioned.
- a teardrop-shaped lens 2 is provided with two indentations 20 and 20a, which are mirror-symmetrical with respect to a LED 15 containing and extending perpendicular to the support surface 12 and parallel to the longitudinal axes of the indentations plane.
- Each of the recesses 20 and 20a is according to the embodiment of Fig. 1 executed.
- a plurality of LEDs along a straight line on the support surface 12 are arranged.
- the distances between the LEDs can be selected consistently.
- Fig. 8 only two of the LEDs arranged on a straight line are shown.
- the LEDs 15 are at the in Fig. 8 illustrated embodiment of a parallel to the straight line along which the LEDs 15 are arranged, extending linear lens covered.
- Linear lens means in the context of this invention that the lens is approximately mirror-symmetrical with respect to a line containing the straight and running perpendicular to the support surface level, wherein the lens in areas outside the indentation in a perpendicular to the Straight line, along which the LEDs 15 are arranged, extending cutting plane has constant cross-sectional shapes.
- the indentations 20 of the linear lens according to Fig. 8 are arranged centrally between the arranged on the support surface 12 LEDs.
- a passage region is provided between the edge of the indentation facing the carrier surface 12 and the carrier surface 12. The indentations widen starting from the base facing the passage area in the direction of the convex boundary surface of the linear lens 3.
- each indentation on two refractive surfaces B1 which, unlike the reference to the Fig. 1 to 7 illustrated embodiments, convex are curved.
- the shape of the refracting surfaces B1 is selected such that the light emitted by an adjacent LED is deflected in the direction of the solder of the carrier surface 12 of the LEDs. In this way, the shielding of the luminaire in a plane along the lens can be improved.
- Fig. 9 illustrated embodiment of the invention differs essentially by the basis of the Fig. 8 explained embodiment that on the boundary surfaces B1 'of the indentations a plurality of slightly convex curved cushions are formed. Through these cushions, the light of the approximately point-shaped LEDs scattered something and thus evened the light distribution curve. A corresponding homogenization can also be achieved by a slight scattering structure on the boundary surfaces B1 'of the indentations. Finally, similar effects can also be due to a low Admixture of scattering particles can be achieved in the material of the lens.
- Fig. 10 is a modification of the basis of the Fig. 8 and 9 illustrated lenses with similar function.
- prisms are executed on the boundary surfaces of the recesses, which extend in the longitudinal direction of the recess.
- Fig. 10a shows a sectional view of the lamp
- Fig. 10b shows a plan view of the lamp
- Fig. 10c shows a perspective view of the lamp with linear lens 3 ".
- Fig. 11 is another variation of the basis of the Fig. 8 and 9 shown lights shown.
- channels 40 are formed in the lens 3 '''The channels extend along a direction perpendicular to the straight line along which the LEDs 15 are arranged and in the direction parallel to the support surface 12 of the support 10'.
- Fig. 11a shows a side view of the lamp
- Fig. 11b shows a plan view of the lamp
- Fig. 11c shows a perspective view of the lamp.
- the boundary surfaces of the channel 40 are designed as substantially flat surfaces.
- demoulding slopes are also provided in this embodiment in the sense of simplifying the production.
- the channel widens starting from a central area in the direction of the boundary surface of the linear lens 3 "."
- a passage area is provided between the channel 40 and the carrier surface 12. The channel widens starting from its edge facing the passage area in the direction of its edge facing the convex boundary surface of the lens.
- Fig. 12 For example, in the above-described sense, a linear design of a teardrop-shaped lens 2 is shown having two indentations made symmetrical to the line along which the LEDs 15 are arranged. Incidentally, the details correspond to the embodiment according to FIG Fig. 12 the luminaire according to Fig. 1 , Fig. 12a shows a sectional view of the lamp while Fig. 12b a perspective view of the lens 3 "" shows.
- Fig. 13 For example, a cone-shaped curve (elevation angle between 20 ° and 60 °) of an embodiment with two LEDs and symmetrically arranged indentations is shown. This embodiment is intended in particular for illuminating an elongated surface.
- Fig. 14 shows a teardrop-shaped lens 4, which covers an LED 15, which is arranged on a support surface 12 of a carrier 10.
- the teardrop-shaped lens 4 according to Fig. 14 is equipped with spherical air pockets on one side in a given emitting area of the LED. This leads to a targeted scattering of the light in this emission area (eg to lighten a wall area uniformly).
- the invention is not limited to the embodiments explained with reference to the drawing. Rather, it is also intended to equip the lenses of lamps according to the invention both with channels and with indentations. Additionally, in all embodiments of the invention, air pockets may also be formed in the lens.
- the support surface of the carrier 10 may be performed differently curved than in the embodiments of the invention shown in the drawing. You can with even execution of the Carrier surface preferably be designed as a boundary surface of a board.
- the support surface 12 may be wholly or partially reflective and / or be provided with surfaces of different reflectance (eg, combinations of surfaces with white solder mask, untreated board surface, provided with highly reflective plastic film (MCPET) surfaces).
- surfaces of different reflectance eg, combinations of surfaces with white solder mask, untreated board surface, provided with highly reflective plastic film (MCPET) surfaces.
- MCPTT highly reflective plastic film
- the outside of the lens facing away from the carrier surface can also be designed asymmetrically in cross-section (for example, similarly Fig. 1 ).
- the plurality of LEDs may be accommodated in a continuous receiving space whose cross-section perpendicular to the longitudinal axis of the lens has the same cross-section along this longitudinal axis (a plane surface may increase the longitudinal glare due to Fresnel reflection).
- the receiving space may be closed at the ends with a reflector.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Die Erfindung betrifft eine Leuchte mit mindestens einer zum Abgeben von sichtbarem Licht betreibbaren LED und mindestens einer zur Lenkung des abgegebenen Lichts betreibbaren Linse, wobei in der Linse mindestens ein Lenkungsübergang zwischen einem Bereich höherer optischer Dichte und einem Bereich geringerer optischer Dichte gebildet ist.The invention relates to a luminaire with at least one LED that can be operated to emit visible light and at least one lens that can be operated to steer the emitted light, at least one steering transition being formed in the lens between a region of higher optical density and a region of lower optical density.
Description
Die vorliegende Erfindung betrifft eine Leuchte mit mindestens einer zum Abgeben von sichtbarem Licht betreibbaren LED und mindestens einer zur Lenkung des abgegebenen Lichts betreibbaren Linse.The present invention relates to a luminaire having at least one LED operable to emit visible light and at least one lens operable to direct the emitted light.
Für Beleuchtungszwecke ausgelegte Leuchten können in Form von Außenleuchten, wie etwa Scheinwerfern, Straßenleuchten, dekorativen Außenleuchten, Tunnelleuchten oder in Form von Innenraumleuchten, wie Hallenleuchten oder Büroleuchten verwirklicht sein. Erfindungsgemäße Leuchten sind auch zur Gangbeleuchtung, Regalbeleuchtung und als Wallwasher einsetzbar. Sie verfügen über mindestens eine LED als Lichtquelle und mindestens eine Linse zur Lichtlenkung.Luminaires designed for lighting can be realized in the form of outdoor lights, such as headlamps, street lights, decorative outdoor lights, tunnel lights or in the form of interior lights, such as hall lights or office lighting. Inventive lights are also used for aisle lighting, shelf lighting and wall washer. They have at least one LED as the light source and at least one lens for directing the light.
Bei bekannten Leuchten der gerade beschriebenen Art sind an den zur Lichtlenkung dienenden klaren Linsenkörper in einigen Fällen auch noch nicht-lichtleitende Seitenflächen angeformt. Zusätzlich können den Leuchten auch noch lichtlenkende bzw. lichtbeeinflussende Elemente, wie etwa zusätzliche Linsen, Blenden, Streuscheiben oder dergleichen vorgesetzt sein.In known luminaires of the type just described, in some cases non-photoconductive side surfaces are also formed on the clear lens bodies which serve to direct the light. In addition, the lamps may also be pre-set with light-directing or light-influencing elements, such as additional lenses, apertures, lenses or the like.
Im Stand der Technik sind rotationssymmetrische, bezüglich einer Achse symmetrische oder auch mit einer Freiformfläche ausgestattete Linsen ebenso bekannt, wie lineare Linsen, die entweder einreihig oder auch in mehreren Reihen angeordnet sein können. Im Rahmen der Erfindung bezeichnet der Ausdruck "lineare Linsen" solche Linsen, die bezüglich einer Symmetrieebene im Wesentlichen spiegelsymmetrisch ausgeführt sind, ohne rotationssymmetrisch zu sein.In the prior art, rotationally symmetric lenses symmetrical with respect to an axis or also equipped with a free-form surface are also known, as are linear lenses which can be arranged either in a single row or in several rows. In the context of the invention, the term "linear lenses" designates those lenses which are essentially mirror-symmetrical with respect to a plane of symmetry, without being rotationally symmetrical.
Die zum Abgeben des sichtbaren Lichts ausgelegte LED (auch OLED und/oder CoB) kann symmetrisch oder asymmetrisch bezüglich Symmetrieachsen der Linsen angeordnet sein, sofern entsprechende Symmetrieachsen erkennbar sind. Sofern mehrere LEDs vorgesehen sind, können diese längs einer Geraden oder auch längs mehrerer parallel oder auch beliebig zueinander ausgerichteten Reihen angeordnet sein.Bei den im Stand der Technik bekannten Leuchten können die Linsen auch tropfenförmig ausgeführt sein. Sie können über Arme oder eine Platte, mit der sie ggf. einteilig ausgeführt sind, miteinander verbunden sein. Sie können auf einem LED Array angeordnet sein. Mit den beschriebenen und aus dem Stand der Technik bekannten Maßnahmen kann das von der LED oder den LEDs abgegebene Licht im Hinblick auf den angestrebten Beleuchtungszweck gelenkt werden. Allerdings ist das in vielen Fällen mit einem hohen Aufwand verbunden.The LED designed for emitting the visible light (also OLED and / or CoB) can be arranged symmetrically or asymmetrically with respect to symmetry axes of the lenses, provided that corresponding axes of symmetry can be seen. If a plurality of LEDs are provided, these may be arranged along a straight line or also along a plurality of rows aligned parallel or else with any desired orientation. In the case of the luminaires known in the prior art, the lenses may also have a teardrop shape. They can be connected to each other via arms or a plate, with which they may be made in one piece. They can be arranged on an LED array. With the measures described and known from the prior art, the light emitted by the LED or the LEDs can be directed with regard to the intended illumination purpose. However, this is in many cases associated with a lot of effort.
Angesichts dieser Probleme im Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Leuchte bereitzustellen, mit der eine dem gewünschten Beleuchtungszweck entsprechende Beleuchtung mit einfachen Mitteln verwirklicht werden kann.In view of these problems in the prior art, the object of the invention is to provide a luminaire with which a lighting corresponding to the desired lighting purpose can be realized by simple means.
Erfindungsgemäß wird diese Aufgaben durch eine Weiterbildung der bekannten Leuchten gelöst, die im Wesentlichen dadurch gekennzeichnet ist, dass in der zur Lenkung des abgegebenen Lichts eingesetzten Linse mindestens ein Lenkungsübergang zwischen einem Bereich höherer optischer Dichte und einem Bereich geringerer optischer Dichte gebildet ist. Bei dieser Anordnung werden also keine zusätzlichen optischen Elemente, wie etwa vorgesetzte Linsen, Blenden oder dergleichen zum Erhalt der gewünschten Beleuchtung benötigt. Es reicht aus, wenn die Linse selbst mit geeigneten Übergangen zwischen Bereichen geringer optischer Dichte und Bereichen mit höherer optischer Dichte ausgestattet wird, um so eine angemessene und dem Beleuchtungszweck entsprechende Lichtlenkung zu verwirklichen.According to the invention, these objects are achieved by a refinement of the known luminaires, which is essentially characterized in that at least one steering transition between a region of higher optical density and a region of lower optical density is formed in the lens used to direct the emitted light. In this arrangement, therefore, no additional optical elements, such as superior lenses, diaphragms or the like needed to obtain the desired illumination. It suffices if the lens itself is provided with suitable transitions between areas of low optical density and areas of higher optical density so as to provide adequate and to realize the lighting purpose corresponding light control.
Die Lenkungsübergänge können im Rahmen der Erfindung zur Erzeugung einer Abschirmung, z. B. längs und/oder quer zu einer linearen Linse oder asymmetrisch in einer oder mehreren bestimmten Richtungen, beispielsweise bei Außenleuchten die Verringerung des Lichtanteils in einen von der Straße abgewandten Bereich, die Erzeugung einer stark asymmetrischen Lichtstärkeverteilung und die Lichtlenkung auf einen kompakteren Raum mit einer Linse bewirken. Im Rahmen der Erfindung ist auch an die Benutzung als Wallwasher, zur Beleuchtung von Regalen und dergleichen gedacht.The steering transitions can be used within the scope of the invention to produce a shield, z. B. longitudinal and / or transverse to a linear lens or asymmetrically in one or more specific directions, for example in outdoor lighting, the reduction of light in a side facing away from the road area, the generation of a highly asymmetric light distribution and the light control on a more compact space with a Lens effect. In the context of the invention is also intended to use as a wallwasher, for lighting shelves and the like.
Ebenso wie bei herkömmlichen Leuchten kann auch bei erfindungsgemäßen Leuchten mindestens eine LED und mindestens eine Linse auf einer gemeinsamen Trägerfläche, wie etwa einer Begrenzungsfläche einer Platine, angeordnet sein. Dabei kann die LED zur vollständigen Ausnutzung des gesamten Linsenvolumens im Sinne der gewünschten Lichtlenkung teilweise, vorzugsweise aber vollständig von der Linse abgedeckt sein, insbesondere in einem zwischen der Linse und der Trägerfläche bzw. Platine gebildeten Hohlraum aufgenommen sein. Zum Erhalt einer Lichtlenkung in einer Sammellinse kann die Linse einen vorzugsweise auf ihrer der Trägerfläche abgewandten Seite angeordneten konvexen Oberflächenbereich aufweisen.As with conventional luminaires, at least one LED and at least one lens can also be arranged on a common carrier surface, such as a boundary surface of a circuit board, in luminaires according to the invention. In this case, the LED for the complete utilization of the entire lens volume in the sense of the desired light control can be partially covered, but preferably completely covered by the lens, in particular in a cavity formed between the lens and the support surface or circuit board. To obtain a light deflection in a condenser lens, the lens may have a convex surface area preferably arranged on its side facing away from the support surface.
Im Rahmen der Erfindung kann ein Lenkungsübergang fertigungstechnisch besonders einfach hergestellt werden, wenn mindestens eine sich ausgehend von dem konvexen Oberflächenbereich in Richtung auf die Trägerfläche erstreckende schlitz- oder kerbenartige Einbuchtung zur Bildung eines Lenkungsübergangs vorgesehen ist. In diesem Fall wird der Bereich höherer optischer Dichte durch das Linsenmaterial gebildet, während der Bereich geringerer optischer Dichte durch die Luft in der Einbuchtung gebildet wird.In the context of the invention, a steering transition manufacturing technology can be made particularly simple when at least one is provided starting from the convex surface area in the direction of the support surface extending slot or notch-like indentation to form a steering transition. In this case For example, the region of higher optical density is formed by the lens material, while the region of lower optical density is formed by the air in the recess.
Zum Erhalt einer für einen großen Teil des abgestrahlten Lichts wirksamen Lichtlenkung hat es sich als zweckmäßig erwiesen, wenn sich die Einbuchtung ausgehend von dem konvexen Oberflächenbereich in einer senkrecht zur Trägerfläche verlaufenden Richtung über mehr als 10 %, vorzugsweise mehr als 20 %, insbesondere 30 % oder mehr der Dicke des Linsenmaterials im Bereich der Einbuchtung erstreckt.To obtain effective for a large part of the radiated light light direction, it has proved to be useful if the indentation starting from the convex surface area in a direction perpendicular to the support surface direction over more than 10%, preferably more than 20%, in particular 30% or more of the thickness of the lens material extends in the region of the indentation.
Zusätzlich oder alternativ kann der Lenkungsübergang auch von einem oder mehreren die Linse durchsetzenden Kanal gebildet sein. Auch in diesem Fall wird der Bereich höherer optischer Dichte durch das Linsenmaterial gebildet, während der Bereich geringerer optischer Dichte durch Luft in dem Kanal gebildet wird.Additionally or alternatively, the steering transition may also be formed by one or more channels passing through the lens. Also in this case, the region of higher optical density is formed by the lens material, while the region of lower optical density is formed by air in the channel.
Die gewünschte Lichtlenkung kann durch Profilierung mindestens einer Begrenzungsfläche der Einbuchtung und/oder des Kanals und/oder durch Ausrichtung der die Einbuchtung und/oder den Kanal begrenzenden Flächen zueinander optimiert werden.The desired light guidance can be optimized by profiling at least one boundary surface of the indentation and / or the channel and / or by aligning the surfaces bounding the indentation and / or the channel to one another.
Bei einer herstellungstechnisch besonders einfachen und daher im Rahmen der Erfindung bevorzugten Ausführungsform der Erfindung ist mindestens eine Begrenzungsfläche der Einbuchtung und/oder des Kanals zumindest teilweise eben ausgeführt.In a manufacturing technology particularly simple and therefore preferred embodiment of the invention within the scope of at least one boundary surface of the indentation and / or the channel is at least partially flat.
Zusätzlich oder alternativ kann mindestens eine Begrenzungsfläche der Einbuchtung und/oder des Kanals gewölbt und/oder profiliert ausgeführt sein. Bei einer profilierten Ausführung der Begrenzungsfläche der Einbuchtung und/oder des Kanals kann auf der profilierten Begrenzungsfläche ein sich parallel oder quer zur Trägerfläche erstreckendes Prisma ausgebildet sein. Es ist auch daran gedacht, sowohl ein sich parallel zur Begrenzungsfläche erstreckendes Prisma als auch ein sich quer zur Begrenzungsfläche der Trägerfläche erstreckendes Prisma vorzusehen.Additionally or alternatively, at least one boundary surface of the indentation and / or the channel can be arched and / or profiled. In a profiled Design of the boundary surface of the indentation and / or the channel may be formed on the profiled boundary surface a parallel or transverse to the support surface extending prism. It is also envisaged to provide both a prism extending parallel to the boundary surface and a prism extending transversely to the boundary surface of the support surface.
Im Rahmen einer weiteren Optimierung der gewünschten Lichtlenkung ist auch daran gedacht, mindestens einen Lenkungsübergang mit einer das abgegebene Licht streuenden Streueinrichtung auszustatten. Eine derartige Streueinrichtung kann durch Aufrauen einer Begrenzungsfläche der Einbuchtung und/oder des Kanals und/oder durch eine Beimengung streuenden Materials in das Linsenmaterial verwirklicht werden. Wenn eine seitliche Lichtabstrahlung, d. h. eine Lichtabstrahlung in einer parallel zur Trägerfläche verlaufenden Richtung gewünscht ist, z. B. im Rahmen einer Wandaufhellung, kann in der Linse zwischen dem Lenkungsübergang und der Trägerfläche, also dann, wenn sich der Lenkungsübergang nicht über die gesamte Dicke des Linsenmaterials erstreckt, ein Durchtrittsbereich ohne Lenkungsübergang vorgesehen sein. Sofern die Leuchte durch ein Gehäuse zumindest teilweise dargestellt ist, kann das den Durchtrittsbereich durchsetzende Licht durch zusätzliche optische Elemente, insbesondere in der Abdeckung, weiter in der gewünschten Richtung gelenkt werden. Dabei kann das den Durchtrittsbereich durchsetzende Licht beispielsweise für eine Deckenaufhellung verwendet werden. Es ist auch möglich, das abgegebene Licht in eine der Trägerfläche abgewandte Richtung umzulenken, d. h. in Richtung von der der Lichtemissionsrichtung der LED abgewandten Seite der Platine.As part of a further optimization of the desired light control is also thought to equip at least one steering transition with a light scattering the emitted light scattering device. Such a scattering device can be realized by roughening a boundary surface of the recess and / or the channel and / or by an admixture of scattering material in the lens material. If a lateral light emission, ie a light emission in a direction parallel to the support surface direction is desired, for. As in the context of a wall brightening, can be provided in the lens between the steering transition and the support surface, ie when the steering transition does not extend over the entire thickness of the lens material, a passage area without steering transition. If the luminaire is at least partially represented by a housing, the light passing through the passage region can be directed further in the desired direction by additional optical elements, in particular in the cover. In this case, the light passing through the passage region can be used, for example, for ceiling lighting. It is also possible to divert the emitted light in a direction away from the carrier surface, ie in the direction away from the light emission direction of the LED side facing away from the board.
Sofern eine unsymmetrische Umlenkung des von der LED abgegebenen Lichts gewünscht ist, kann eine Anordnung gewählt werden, bei der eine Projektion des Lenkungsübergangs, der Einbuchtung und/oder des Kanals auf die vorzugsweise ebene Trägerfläche in einer senkrecht zur Trägerfläche verlaufenden Projektionsrichtung außerhalb einer Projektion der LED auf die Trägerfläche angeordnet ist. Im Sinne einer Erhöhung der Variabilität der Lichtlenkung kann es zweckmäßig sein, wenn die Linse mit zwei, drei oder mehr Lenkungsübergängen, Einbuchtungen und/oder Kanälen ausgestattet ist.If an asymmetrical deflection of the light emitted by the LED light is desired, an arrangement can be selected in which a projection of the steering transition, the indentation and / or the channel on the preferably flat support surface in a direction perpendicular to the support surface projection direction outside a projection of the LED is arranged on the support surface. In terms of increasing the variability of the light guidance, it may be expedient if the lens is equipped with two, three or more steering transitions, indentations and / or channels.
Ebenso wie bei herkömmlichen Leuchten, bei denen die optischen Elemente außerhalb der Linse angeordnet sind, kann eine erfindungsgemäße Leuchte zwei, drei oder mehr auf einer gemeinsamen Trägerfläche angeordnete LEDs aufweisen, die auch als ein LED Array auf einer Platinenoberfläche zusammengefasst sein können. Dabei können drei oder mehr LEDs längs einer Geraden angeordnet sein und mindestens eine Linse etwa spiegelsymmetrisch bezüglich einer die Gerade enthaltenden und senkrecht zur Trägerfläche angeordneten Ebene ausgeführt sein. Eine solche Linse kann als sogenannte lineare Linse ausgeführt sein, welche außerhalb der Einbuchtungen und Kanäle in jeder senkrecht zu der Geraden verlaufenden Ebene etwa dieselbe Querschnittsfläche aufweist.As in the case of conventional luminaires in which the optical elements are arranged outside the lens, a luminaire according to the invention can have two, three or more LEDs arranged on a common carrier surface, which can also be combined as an LED array on a circuit board surface. In this case, three or more LEDs may be arranged along a straight line and at least one lens may be embodied approximately mirror-symmetrically with respect to a plane containing the straight line and arranged perpendicular to the carrier surface. Such a lens may be designed as a so-called linear lens, which has approximately the same cross-sectional area outside the indentations and channels in each plane extending perpendicular to the straight line.
Bei erfindungsgemäßen Leuchten kann der Bereich höherer optischer Dichte einen Kunststoff und/oder einen organischen Feststoff aufweisen, und vorzugsweise PMMA, PC, PP, Silikon und/oder mit Oxiden versetzte Kunststoffe umfassen.In luminaires according to the invention, the region of higher optical density can comprise a plastic and / or an organic solid, and preferably comprise PMMA, PC, PP, silicon and / or plastics mixed with oxides.
Wie der vorstehenden Erläuterung der Erfindung zu entnehmen ist, kann der Bereich geringerer optischer Dichte durch die die Einbuchtung und/oder den Kanal füllende Luft gebildet sein.As can be seen from the above explanation of the invention, the region of lower optical density can be formed by the air filling the recess and / or the channel.
Zusätzlich oder alternativ zu Einbuchtungen und/oder Kanälen kann die Linse Lufteinschlüsse, insbesondere kugelförmige Lufteinschlüsse zur Bildung der Lenkungsübergänge aufweisen.In addition or as an alternative to indentations and / or channels, the lens may have air inclusions, in particular spherical air inclusions, to form the steering transitions.
Nachstehend wird die Erfindung unter Bezugnahme auf die Zeichnung, auf die hinsichtlich aller erfindungswesentlichen und in der Beschreibung nicht näher herausgestellten Einzelheiten ausdrücklich Bezug genommen wird, erläutert.In the following, the invention will be explained with reference to the drawing, to which reference is expressly made with regard to all details essential to the invention and details of which there is no further details.
In der Zeichnung zeigt:
- Fig. 1
- eine erste Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 2
- eine zweite Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 3
- eine dritte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 4
- eine vierte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 5
- eine fünfte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 6
- eine sechste Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 7
- eine siebte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 8
- eine achte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 9
- eine neunte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 10
- eine zehnte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 11
- eine elfte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 12
- eine zwölfte Ausführungsform einer erfindungsgemäßen Leuchte,
- Fig. 13
- eine dreizehnte Ausführungsform einer erfindungsgemäßen Leuchte, und
- Fig. 14
- eine vierzehnte Ausführungsform einer erfindungsgemäßen Leuchte.
- Fig. 1
- A first embodiment of a luminaire according to the invention,
- Fig. 2
- a second embodiment of a lamp according to the invention,
- Fig. 3
- a third embodiment of a lamp according to the invention,
- Fig. 4
- A fourth embodiment of a luminaire according to the invention,
- Fig. 5
- A fifth embodiment of a lamp according to the invention,
- Fig. 6
- A sixth embodiment of a luminaire according to the invention,
- Fig. 7
- A seventh embodiment of a luminaire according to the invention,
- Fig. 8
- an eighth embodiment of an inventive Lamp,
- Fig. 9
- A ninth embodiment of a luminaire according to the invention,
- Fig. 10
- A tenth embodiment of a lamp according to the invention,
- Fig. 11
- An eleventh embodiment of a luminaire according to the invention,
- Fig. 12
- A twelfth embodiment of a luminaire according to the invention,
- Fig. 13
- a thirteenth embodiment of a lamp according to the invention, and
- Fig. 14
- a fourteenth embodiment of a lamp according to the invention.
Die in
Die ebenen Begrenzungsflächen S1 und S2 der Einbuchtung 20 schließen einen spitzen Winkel miteinander ein. Diese ebenen Begrenzungsflächen S1 und S2 sind in Abhängigkeit vom Winkel des auftreffenden Lichts teilweise reflektierend (Totalreflexion an S1, Fresnelreflexion an S2). Ein Teil des von der LED 15 abgegebenen Lichts kann an den Begrenzungsflächen S1, S2 und B auch gebrochen werden. Das den Durchtrittsbereich 50 durchdringende Licht kann mit Hilfe von zusätzlichen optischen Elementen umgelenkt werden. Im Fall einer Abdeckung der Leuchte durch ein Gehäuse (nicht dargestellt) kann dieses Licht durch eine zusätzliche Umlenkeinrichtung in der gewünschten Richtung umgelenkt werden. So kann ggf. auch die der Linse abgewandte Seite des Trägers 10 ausgeleuchtet werden.The flat boundary surfaces S1 and S2 of the
Wie besonders deutlich der Draufsicht gemäß
Die in
In Abhängigkeit vom Material und der Ausführung der Prismen, die auch mit Hinterschnitten ausgestattet sein können, kann es fertigungstechnisch günstig sein, wenn längs der Einbuchtung 20 Entformungsschrägen vorgesehen sind. Das bedeutet, dass sich die Einbuchtung 20 ausgehend von der in Richtung der Längsachse genommenen Mitte in Richtung auf die Begrenzungsflächen der Linse erweitern kann. Bei den anhand der
Im Unterschied dazu verlaufen die Begrenzungsflächen S1 und S2" bei der in
Die in
Die in
Bei der Draufsicht auf die Ausführungsform gemäß
Bei der in
Die Begrenzungsflächen S3 und S4 sind abhängig vom Winkel des auftreffendes Lichts teilweise reflektierend (Totalreflexion an S3, Fresnelreflexion an S4). Ein Teil des Lichts kann an den Flächen S3 und S4, B und B' auch gebrochen werden. Die Begrenzungsflächen S3 und S4 des Kanals 40 sind bei der in
Bei der in
Bei der in
Die Einbuchtungen 20 der linearen Linse gemäß
Bei der in
Die in
In
In
In
In
Die Erfindung ist nicht auf die anhand der Zeichnung erläuterten Ausführungsformen beschränkt. Es ist vielmehr auch daran gedacht, die Linsen von erfindungsgemäßen Leuchten sowohl mit Kanälen als auch mit Einbuchtungen auszustatten. Zusätzlich können bei allen Ausführungsformen der Erfindung auch Lufteinschlüsse in der Linse ausgeführt sein. Die Trägerfläche des Trägers 10 kann anders als bei den in der Zeichnung dargestellten Ausführungsformen der Erfindung auch gewölbt ausgeführt sein. Sie kann bei ebener Ausführung der Trägerfläche vorzugsweise als Begrenzungsfläche einer Platine ausgeführt sein.The invention is not limited to the embodiments explained with reference to the drawing. Rather, it is also intended to equip the lenses of lamps according to the invention both with channels and with indentations. Additionally, in all embodiments of the invention, air pockets may also be formed in the lens. The support surface of the
Die Trägerfläche 12 kann ganz oder teilweise reflektierend ausgebildet sein und/oder mit Flächen unterschiedlichen Reflexionsgrads versehen sein (z.B. Kombinationen von Flächen mit weißem Lötstopplack, unbehandelter Platinenoberfläche, mit hochreflektierender Kunststofffolie (MCPET) versehen Flächen). Die von der Trägerfläche abgewandte Außenseite der Linse kann im Querschnitt auch asymmetrisch ausgeführt sein (z. B. ähnlich
Bei linearen Linsen können die mehreren LEDs in einem durchgehenden Aufnahmeraum aufgenommen sein, dessen Querschnitt senkrecht zur Längsachse der Linse entlang dieser Längsachse den gleichen Querschnitt aufweist (eine plane Fläche kann die Längsentblendung aufgrund der Fresnelreflexion verstärken). Der Aufnahmeraum kann an den Enden mit einem Reflektor verschlossen sein.In the case of linear lenses, the plurality of LEDs may be accommodated in a continuous receiving space whose cross-section perpendicular to the longitudinal axis of the lens has the same cross-section along this longitudinal axis (a plane surface may increase the longitudinal glare due to Fresnel reflection). The receiving space may be closed at the ends with a reflector.
- 1, 1', 1", 1''', 1'''', 1'''''1, 1 ', 1 ", 1' '', 1 '' '', 1 '' '' '
- Linselens
- 22
- tropfenförmige Linseteardrop-shaped lens
- 3, 3', 3", 3''', 3''''3, 3 ', 3 ", 3' '', 3 '' ''
- lineare Linselinear lens
- 44
- Tropfenförmige Linse mit kugelförmigen LufteinschlüssenDrop-shaped lens with spherical air inclusions
- 1010
- Trägercarrier
- 1212
- Trägerflächesupport surface
- 1515
- Leuchtdiodeled
- 20, 20a20, 20a
- Einbuchtungindentation
- 4040
- Kanalchannel
- 5050
- DurchtrittsbereichPassage region
- B, B1, B1`B, B1, B1`
- lichtbrechende Flächerefractive surface
- F1, F2, F3F1, F2, F3
- Prismenflächeprism surface
- S1, S2, S2', S2", S2'''', S3, S4S1, S2, S2 ', S2 ", S2"', S3, S4
- Begrenzungsflächeboundary surface
Claims (18)
Applications Claiming Priority (1)
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DE102018103547.0A DE102018103547A1 (en) | 2018-02-16 | 2018-02-16 | LAMP |
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EP3527880A1 true EP3527880A1 (en) | 2019-08-21 |
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EP19156893.0A Withdrawn EP3527880A1 (en) | 2018-02-16 | 2019-02-13 | Luminaire |
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DE (1) | DE102018103547A1 (en) |
Cited By (2)
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WO2023144204A1 (en) * | 2022-01-31 | 2023-08-03 | Signify Holding B.V. | Lighting arrangement comprising a lens body |
US12078340B2 (en) | 2020-11-06 | 2024-09-03 | Signify Holding B.V. | Total internal reflection lens |
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US20100195333A1 (en) * | 2009-01-30 | 2010-08-05 | Gary Eugene Schaefer | Led optical assembly |
US20110292652A1 (en) * | 2010-05-31 | 2011-12-01 | Lite-On Technology Corporation | Led luminaire |
DE102011107427A1 (en) * | 2011-07-15 | 2013-01-17 | Siteco Beleuchtungstechnik Gmbh | Deckenaufhellungsnut |
US20150217840A1 (en) * | 2014-02-04 | 2015-08-06 | Zachary Taylor | Light Altering Rub Rail and Rub Rail Insert |
EP2924345A1 (en) * | 2014-03-28 | 2015-09-30 | Swarco Futurit Verkehrssignalsysteme Ges.m.b.H. | Lighting devices with asymmetrical light distribution |
US20160161084A1 (en) * | 2014-12-09 | 2016-06-09 | Lg Innotek Co., Ltd. | Lens and light emitting device module including the same |
WO2018031613A1 (en) * | 2016-08-12 | 2018-02-15 | Innotec, Corp. | Light assembly including linear lens |
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DE102011111953A1 (en) * | 2011-08-30 | 2013-02-28 | Bartenbach Holding Gmbh | tunnel luminaire |
NL2012030C2 (en) * | 2013-12-27 | 2015-06-30 | Orga B V | Beacon light optic, beacon light. |
-
2018
- 2018-02-16 DE DE102018103547.0A patent/DE102018103547A1/en active Pending
-
2019
- 2019-02-13 EP EP19156893.0A patent/EP3527880A1/en not_active Withdrawn
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US20100195333A1 (en) * | 2009-01-30 | 2010-08-05 | Gary Eugene Schaefer | Led optical assembly |
US20110292652A1 (en) * | 2010-05-31 | 2011-12-01 | Lite-On Technology Corporation | Led luminaire |
DE102011107427A1 (en) * | 2011-07-15 | 2013-01-17 | Siteco Beleuchtungstechnik Gmbh | Deckenaufhellungsnut |
US20150217840A1 (en) * | 2014-02-04 | 2015-08-06 | Zachary Taylor | Light Altering Rub Rail and Rub Rail Insert |
EP2924345A1 (en) * | 2014-03-28 | 2015-09-30 | Swarco Futurit Verkehrssignalsysteme Ges.m.b.H. | Lighting devices with asymmetrical light distribution |
US20160161084A1 (en) * | 2014-12-09 | 2016-06-09 | Lg Innotek Co., Ltd. | Lens and light emitting device module including the same |
WO2018031613A1 (en) * | 2016-08-12 | 2018-02-15 | Innotec, Corp. | Light assembly including linear lens |
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US12078340B2 (en) | 2020-11-06 | 2024-09-03 | Signify Holding B.V. | Total internal reflection lens |
WO2023144204A1 (en) * | 2022-01-31 | 2023-08-03 | Signify Holding B.V. | Lighting arrangement comprising a lens body |
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