EP3832194B1 - Système optique permettant d'influencer l'émission lumineuse d'une source lumineuse allongée - Google Patents

Système optique permettant d'influencer l'émission lumineuse d'une source lumineuse allongée Download PDF

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Publication number
EP3832194B1
EP3832194B1 EP20209714.3A EP20209714A EP3832194B1 EP 3832194 B1 EP3832194 B1 EP 3832194B1 EP 20209714 A EP20209714 A EP 20209714A EP 3832194 B1 EP3832194 B1 EP 3832194B1
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EP
European Patent Office
Prior art keywords
light
optical element
optical system
longitudinal direction
optical
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EP20209714.3A
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German (de)
English (en)
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EP3832194A1 (fr
Inventor
Thibaut Escourrou
Martin BIZJAK
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Zumtobel Lighting GmbH Austria
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Zumtobel Lighting GmbH Austria
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Classifications

    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • 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 an optical system which is intended to influence the light output of an elongated light source, preferably formed from several LEDs.
  • the invention further relates to an arrangement for emitting light, which has such an optical system.
  • Optical systems in lighting technology serve to influence the light emitted by the light sources in different directions in such a way that the overall light emitted by a luminaire corresponds to a desired light emission characteristic.
  • the light-refracting or light-reflecting optical elements used here are usually coordinated with the shape and arrangement of the light source. This is particularly necessary when using LEDs, which have since replaced conventional light sources such as fluorescent lamps, since LEDs have very small dimensions and even small deviations in the positioning of the optical element in relation to the light source or in the design of the optical element have a strong influence on the light distribution ultimately achieved. Accordingly, such optical elements are components that are manufactured with high precision and fulfill a specific purpose.
  • the ultimately desired light output for a luminaire often depends on the area of application or the installation situation of the luminaire.
  • An example of this are elongated lights, which are intended, for example, to be arranged one behind the other in the longitudinal direction and to illuminate an elongated area located below the lights, for example a corridor.
  • the light distribution in the transverse direction should have an opening angle that is tailored to the position or installation height of the lights as well as the width of the area to be illuminated in order to be able to achieve the most uniform lighting possible.
  • the optical elements are generally components that are manufactured with high precision and therefore at a high cost. Since it is not economically justifiable to produce individually suitable optics for the desired application, ways are being sought to be able to influence the light output in a flexible manner.
  • this is from the EP 2 734 777 B1 known to first influence the light of several LED light sources arranged one behind the other with primary optics and, viewed in the light emission direction, to arrange a further optical element after this primary optics, which influences the light distribution of the first optics in a suitable manner.
  • the second optical element is preferably an element that can be manufactured more easily compared to the primary optics, so that a desired adjustment of the light distribution can be made in this way.
  • DE202017102009U discloses an optical system.
  • the EP 3 037 719 A1 deals with an LED lens body for generating a direct and an indirect light component, as well as a luminaire with such an LED lens body.
  • a lens body which has a light entry surface arranged centrally in a cross section and two further light entry surfaces arranged laterally thereof, the light entry surfaces being arranged in such a way that a first partial light beam from at least one LED arranged centrally above the lens body into the central light input surface and two others Partial light beams from the same LED enter one of the side light coupling surfaces.
  • a centrally arranged light decoupling surface is provided, through which the first partial light bundle leaves the lens body in the direction of the main radiation direction of the LED, and the two further partial light bundles are each totally reflected on at least one boundary surface of the lens body and the lens body is exposed by a further light decoupling surface against the main radiation direction Exit LED.
  • the present invention is based on the task of being able to influence the light output of an optical system in a further improved manner.
  • the light distribution can also be optimized in the longitudinal direction with as little effort as possible.
  • EP 2 734 777 B1 It is intended to ultimately achieve a desired light distribution in a flexibly adaptable manner by combining several optical elements. According to the invention, it is now proposed to use a total of three optical elements, which are arranged one behind the other as seen in the light emission direction and influence the light distribution in different ways.
  • a first optical element which extends in a longitudinal direction, initially serves to achieve a light distribution which has a first opening angle with respect to a plane extending perpendicular to the longitudinal direction of the optical system.
  • a second optical element is provided downstream of this first optical element, which is designed to influence the light emitted by the first optical element in the plane extending perpendicular to the longitudinal direction in such a way that the light distribution is modified.
  • a third optical element is provided, which is arranged downstream of the second optical element and is designed to influence, in particular to bundle, the light emitted by the second optical element in a plane running parallel to the longitudinal direction.
  • the arrangement of three optical elements according to the invention means that the light output can be influenced in a further improved manner compared to previously known solutions.
  • the solution according to the invention allows the light distribution to be adjusted to a desired opening angle not only in a first plane, but also in a second, vertical plane to optimize the light output on the level facing the first level. In particular, this can prevent blinding effects for observers from occurring when viewed in the longitudinal direction of the arrangement.
  • the third optical element is preferably formed by a grid with a plurality of reflector lamellae arranged in parallel and extending perpendicular to the longitudinal direction of the optical system, which preferably have a V-shaped cross section.
  • Such luminaire grids are already known and were previously used in particular to influence the light output of fluorescent lamps. It has now been found that the combination of such a grid with the light-refractive optical element described in more detail below leads to a particularly efficient influence on the light output.
  • the first optical element consists of a transparent, light-refractive material and is designed to achieve a light distribution with a small opening angle by means of total reflection.
  • the first optical element has an elongated lens body that diverges from a light entry area, the side opposite the light entry area forms a light emission area of the first optical element.
  • the lens body has flanks on both sides of the light entry area that extend to the edges of the light emission area and which totally reflect incident light rays or have stepped flank areas which totally reflect incident light rays.
  • the side of the lens body opposite the light entry region has an elongated recess which is approximately V-shaped in cross section. This contributes to an equalization of the light emission of the first optical element, since this reduces the proportion of light emitted directly in the light emission direction.
  • the lens body of the first optical element preferably has a plurality of lenses, preferably so-called TIR lenses, arranged one behind the other in the longitudinal direction on its light entry area, which ideally are an integral part of the first optical element.
  • TIR lenses preferably so-called TIR lenses
  • the second optical element is in turn formed from a transparent, light-refractive material and is intended to increase the opening angle of the light distribution achieved by the first optical element by means of light refraction. Furthermore, it is provided that the second optical element influences the light distribution in such a way that the emitted light has a light distribution which has two essentially symmetrical wings that are separate from one another, each essentially in an angular range of 0° to 90°, based on a center plane of the second optical element, and each have a tip area and flank areas adjoining it on both sides, in which the light intensity is dissipated at a significantly lower value than in the tip area, the tip area being at angles greater than 0 ° and one of the edges being at the angle range drops to 0°.
  • the angle between the two tip regions of the wings corresponds to the opening angle of the light distribution achieved by the second optical element.
  • a so-called batwing light distribution can be achieved when viewed transversely to the longitudinal direction, the opening angle of which is then adapted to the corresponding application.
  • the second optical element is designed essentially in a plate-like manner with a first, preferably flat side, and a second side, opposite the first side, which has a recess extending in the longitudinal direction and having an approximately V-like cross-section.
  • This V-like recess acts as a so-called beam splitter with regard to the light emitted by the first optical element and leads to the desired batwing light distribution explained above, the opening angle being dependent on the design of the V-like recess.
  • the second optical element is preferably an element which is translation-invariant when viewed in the longitudinal direction, i.e.
  • optical element has a non-changing cross-section, such an optical element can be produced relatively simply and inexpensively - for example using the extrusion process, so that the combination of the first and second optical element represents a relatively easy to carry out but efficient way to flexibly adjust the light distribution in the transverse direction.
  • the second optical element is arranged such that the first, flat side faces the first optical element, wherein preferably the second optical element rests on the first optical element or is separated from it only by a small gap.
  • the three optical elements are combined into a unit using a holder, which can then be easily assembled.
  • the holder can, for example, have at least two side walls, which are arranged on both sides of the three optical elements and consist of an opaque material.
  • An arrangement according to the invention for emitting light has an elongated light source, preferably formed from several LEDs, and an optical system as described above. It is preferably provided here that the light source is formed by a plurality of LEDs arranged one behind the other in the longitudinal direction, the distances between the grid slats of the third optical element being coordinated with the arrangement of the LEDs. In particular, it can be provided that - seen in a projection perpendicular to the light emission direction - one grid slat is arranged between two adjacent LEDs or each LED is delimited laterally by two grid slats.
  • the light source and the optical system according to the invention preferably form a structural unit which can be connected to a mounting rail system as a lamp.
  • the arrangement additionally has one or more contacting elements for mechanical and/or electrical connection to the mounting rail system, the contacting elements preferably being rotatable contacting elements.
  • the Figures 1 to 3 first show various views of a lamp provided with the reference number 100, which has an optical system designed according to the invention in order to influence the light output of LEDs arranged one behind the other in the longitudinal direction.
  • the lamp 100 is intended to be arranged as a so-called bar lamp on a mounting rail arrangement 150 extending in the longitudinal direction.
  • the mounting rail arrangement 150 has, in a known manner, for example, U-shaped mounting rail profile elements that are open at the bottom, in the interior of which lines (not shown) for power supply and/or signal transmission run.
  • the lamp 100 is then attached to the mounting rail arrangement 150 using one or more, shown in the sectional view Figure 3 recognizable contacting elements 110 attached.
  • Corresponding contacting elements 110 are used to achieve a sufficiently reliable mechanical fastening.
  • the invention is not limited to such bar lights or continuous-row lights, but that the optical system according to the invention, described in detail below, can of course be used in all lights which use LEDs arranged one behind the other in the longitudinal direction as lamps and for which an adjustment the light distribution is desired in the manner described below.
  • an essential component of the lamp 100 is the optical system 50 used to influence the light output, which is isolated in a sectional view in Figure 4 is shown.
  • the optical system 50 used to influence the light output, which is isolated in a sectional view in Figure 4 is shown.
  • three different optical elements are arranged one behind the other as seen in the light emission direction, through which the light output of the lamp 100 is ultimately influenced both in the transverse direction and in the longitudinal direction.
  • the first two optical elements 10 and 30, whose mode of operation will be explained in detail below, serve to influence the light primarily through refraction or total reflection
  • the third optical element 40 is a luminaire grid, whose How it works is based on reflection.
  • all three optical elements 10, 30, 40 are preferably combined into a structural unit, which is then used together with the LEDs 60 as a lamp or can be easily mounted on a lamp.
  • the function of the first two optical elements 10 and 30 will first be explained, which serve in particular to control the light emission in the transverse direction - based on the longitudinal direction I (see Figures 1 and 2 ) of the arrangement - to influence.
  • these optical elements that are made of a transparent, light-refractive material and, coordinated with one another, influence the light in the desired way.
  • Both optical elements 10 and 30 can be arranged very close to one another, as is the case Figures 4 to 6 show, or even lie directly next to each other.
  • these optical elements 10 and 30 are then held by a downwardly open, approximately C-shaped profile part 70, which can also be used to hold the LEDs or a circuit board containing the LEDs.
  • the design of the first optical element can in particular Figures 5 to 7 be removed. It is a lens-like optical element, which is made in a comparable manner EP 3 212 997 B1 is known to the applicant.
  • the optical element 10 has an elongated lens body 11 which widens in a trapezoidal manner in a direction away from the LEDs 60.
  • the underside 12 of the lens body 11 facing away from the LEDs 60 forms the light exit region of the first optical element 10, this underside 12 having an approximately V-like recess 13 extending in the longitudinal direction.
  • the lens body 11 is divided into two wings 14, 15, as can be seen in the figures.
  • the side surfaces 16 of the lens body 11 opposite the light exit region extend from a light entry region of the optical element 10 laterally downwards to the edge region of the lens body 11, these surfaces 16 being designed in a stepped manner as shown, such that inclined flank regions 17 are each horizontal extending surface areas 18 are separated from one another.
  • These inclined flank areas 17 are designed in such a way that - as in Figure 7 shown - incident light rays are totally reflected and deflected to the underside, i.e. in the direction of the light exit area. Because these flank areas 17 are separated from one another by the horizontal areas 18, the lens body 11 can be expanded in the transverse direction, so that light is emitted in a relatively strongly focused manner towards the underside over a greater width.
  • the initially lateral distribution of the light within the lens body 11 is also supported by the side walls of the V-shaped recess 13 already mentioned, which is designed in such a way that at least some of the light rays striking these walls are in turn totally reflected and thus deflected laterally before it hits the flank areas 17.
  • the first optical element 10 has lens-like light entry elements 20 on the side facing the LEDs 60.
  • These are designed in the form of so-called TIR lenses and thus have an approximately truncated cone-like area 21, which has a recess or recess 22 on its side facing the LEDs and which is connected in one piece to the lens body 11 on its underside.
  • TIR lenses 20 are already known in the prior art and have proven to be extremely efficient for influencing the light from LEDs. This This is because light that is emitted strongly from the side of the LEDs can still be used efficiently.
  • each light beam is preferably totally reflected at least once on different side walls of the first optical element 10, which ensures that all of the light emitted by the LEDs can actually be influenced in the desired manner, despite everything being seen over the entire width of the first optical element 10 Light is emitted downwards.
  • the first optical element 10 therefore serves to bundle light emitted by the LEDs 60 in such a way that it is emitted essentially perpendicular to the underside, but over the entire width of the first optical element 10. In this case, the result is a light distribution with a relatively narrow opening angle. However, depending on the dimensions of an area to be illuminated and the height at which the lamp 100 is positioned in comparison to this area, it may be necessary to adjust the opening angle of the light output accordingly.
  • the optical element 10 is a plastic element, which usually has to be produced using an injection molding process. This represents a relatively cost-intensive manufacturing option, which is why it does not make economic sense to create individually designed optical elements whose light output has exactly the desired opening angle.
  • the first optical element 10 is followed by a second optical element 30, which can suitably modify the opening angle of the light emission and, ideally, be manufactured relatively simply and inexpensively.
  • the second optical element 30 is formed by a translation-invariant body, i.e. that does not change in the longitudinal direction, made of a translucent, transparent material, which is approximately plate-like and has a flat surface 31 on its side facing the first optical element 10.
  • the side of the second optical element 30 opposite this flat surface is designed with a V-like recess 33, through which the light emission side 32 of the second optical element is divided into two inclined surface areas 35 and 36.
  • the mode of operation of the beam splitter can be influenced by the choice of the opening angle of the V-shaped depression 33, with a greater inclination of the surfaces 35 and 36 leading to a greater broadening of the light emission characteristic.
  • This light distribution is characterized by two essentially symmetrical, separate wings, each of which lies essentially in an angular range of 0° to 90° with respect to a center plane of the optical system, and each has a tip area and flank areas adjoining it on both sides, in which the light intensity a significantly lower value than falls in the peak area.
  • the tip area is at angles greater than 0°, with one of the flanks then sloping towards the angle area by 0° and the angle between the two tip areas of the wings corresponds to the opening angle of the light distribution.
  • the second optical element 30 is now designed to be translation-invariant, as already mentioned, it can be produced relatively easily, for example using the extrusion process.
  • different second optical elements 30 with different opening angles can be provided for the recess 33 in a simple manner, which can then optionally be combined with the first optical element 10. This allows the light distribution in the transverse direction to be adjusted in a simple but efficient manner.
  • This third optical element 40 represents a grid which, in particular in the transverse direction, has slats 45 which run parallel to one another and which are connected to one another at their ends via corresponding connecting webs 42.
  • the third optical element can also be a plastic element, which is then coated in a correspondingly reflective manner, since the grid slats 45 should preferably influence the light exclusively by means of reflection.
  • the individual slats are preferably - as in the Figures 11 and 13 recognizable - slightly V-shaped and taper in one direction away from the LEDs 60. Light is then emitted via the elongated openings 47 in between, with light rays which, viewed in the longitudinal direction, leaving the second optical element 30 at relatively flat angles, are reflected on the side walls 46 of the grid slats 45.
  • the spacing of the grid slats 45 in the longitudinal direction I is coordinated with the arrangement of the LEDs 60, in which case, for example - in a projection perpendicular to the light emission direction - one grid slat 45 is arranged between two adjacent LEDs 60 or each LED 60 is arranged laterally is limited by two grid slats 45.
  • this is not absolutely necessary and the dimensions and design of the grid 40 should primarily be chosen such that the desired bundling of the light is achieved in the longitudinal direction.
  • the effect of the grid 40 is particularly based on the Figures 12a and 12b It can be seen which light distributions of the optical system without grid 40 ( Figure 12a ) and with grid 40 ( Figure 12b ) show. It is clearly visible that the light distribution in the longitudinal direction, i.e. in the C90-C270 plane, can be made narrower using the grid. In this way, efficient glare reduction in the longitudinal direction can be achieved.
  • an optical system 50 is created which, in section in the longitudinal direction, is in Figure 13 is recognizable. According to the above explanations, on the one hand it is possible to precisely adapt the light distribution in the transverse direction to the respective application, and on the other hand the light emission in the longitudinal direction is optimized in such a way that the occurrence of glare effects can be avoided.
  • the three optical elements 10, 30, 40 are combined into a structural unit, which can be done with the help of the in Figure 3 recognizable side walls 80, which could also be part of a lamp housing, for example.
  • the walls therefore preferably consist of an opaque material.
  • This structural unit can then also be used to hold the lamps as well as the components for the power supply and for connection to the mounting rail system 150.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (11)

  1. Système optique (50) permettant d'influencer l'émission de lumière d'une source de lumière allongée, de préférence formée de plusieurs DEL (60), dans lequel le système optique (50) présente :
    a) un premier élément optique (10), lequel s'étend dans une direction longitudinale (I) et est conçu pour offrir, par rapport à un plan s'étendant perpendiculairement à la direction longitudinale du système optique (50), une distribution de lumière qui présente un premier angle d'ouverture,
    b) un deuxième élément optique (30) disposé en aval du premier élément optique (10), lequel est conçu pour influencer la lumière émise par le premier élément optique (10) dans le plan s'étendant perpendiculairement à la direction longitudinale, de telle sorte que la distribution de lumière est modifiée,
    c) un troisième élément optique (40) disposé en aval du deuxième élément optique (30), lequel est conçu pour influencer la lumière émise par le deuxième élément optique (30) dans un plan s'étendant parallèlement à la direction longitudinale (I), en particulier pour la focaliser,
    dans lequel le premier élément optique (10) est constitué d'un matériau réfringent transparent et est conçu pour offrir, au moyen d'une réflexion totale, une distribution de lumière comportant un petit angle d'ouverture, et dans lequel le premier élément optique (10) présente un corps de lentille (11) allongé, divergeant à partir d'une zone d'entrée de lumière et dont le côté (12) opposé à la zone d'entrée de lumière forme une zone d'irradiation de lumière, dans lequel le corps de lentille (11) présente, des deux côtés de la zone d'entrée de lumière, des flancs ou des sections de flancs (17) s'étendant vers les bords de la zone d'irradiation de lumière, lesquels sont conçus pour dévier un faisceau lumineux incident au moyen d'une réflexion totale,
    caractérisé en ce que le côté opposé à la zone d'entrée de lumière du corps de lentille (11) présente un évidement (13) allongé et approximativement en forme de V en section transversale,
    dans lequel le deuxième élément optique (30) est constitué d'un matériau réfringent transparent et est conçu pour augmenter, au moyen d'une réfraction de lumière, l'angle d'ouverture de la distribution de lumière offerte par le premier élément optique (10) et pour offrir une distribution de lumière qui présente deux ailes sensiblement symétriques séparées l'une de l'autre, lesquelles se situent respectivement sensiblement dans une plage angulaire de 0° à 90° par rapport à un plan central du deuxième élément optique et présentent respectivement une zone de pointe et des zones de flancs adjacentes à celle-ci des deux côtés, dans lesquelles zones de flancs l'intensité lumineuse diminue à une valeur nettement inférieure à celle dans la zone de pointe, dans lequel
    la zone de pointe se situe à des angles supérieurs à 0° et l'un des flancs diminue en se rapprochant de la plage angulaire autour de 0°, dans lequel l'angle entre les deux zones de pointe des ailes correspond à l'angle d'ouverture de la distribution de lumière.
  2. Système optique selon la revendication 1,
    caractérisé en ce
    que le troisième élément optique (40) est formé par une grille comportant plusieurs lamelles de réflecteur (45) disposées parallèlement et s'étendant perpendiculairement à la direction longitudinale (I) du système optique (50), lesquelles lamelles présentent de préférence une section transversale approximativement en forme de V.
  3. Système optique selon l'une des revendications 1 à 2,
    caractérisé en ce
    que le corps de lentille (11) présente, au niveau de sa zone d'entrée de lumière, plusieurs éléments d'entrée de lumière, disposés les uns derrière les autres dans la direction longitudinale, sous forme de lentilles (20), de préférence de lentilles TIR, lesquelles sont un composant d'un seul tenant du premier élément optique (10).
  4. Système optique selon l'une des revendications précédentes,
    caractérisé en ce
    que le deuxième élément optique (30) est conçu sensiblement en forme de plaque comportant un premier côté (31) de préférence plan ainsi qu'un second côté opposé au premier côté (31), lequel second côté présente un évidement (33) approximativement en forme de V s'étendant dans la direction longitudinale.
  5. Système optique selon la revendication 4,
    caractérisé en ce
    que le deuxième élément optique (30) est disposé de telle sorte que le premier côté (31) fait face au premier élément optique (10), dans lequel le deuxième élément optique (30) est de préférence en appui sur le premier élément optique (10) ou séparé de celui-ci uniquement par une fente étroite.
  6. Système optique selon l'une des revendications précédentes,
    caractérisé en ce
    que les trois éléments optiques (10, 30, 40) sont regroupés, à l'aide d'un support, pour former une unité modulaire.
  7. Système optique selon la revendication 6,
    caractérisé en ce
    que le support présente au moins deux parois latérales (80), lesquelles sont disposées des deux côtés des trois éléments optiques (10, 30, 40) et sont constituées d'un matériau opaque.
  8. Agencement pour l'émission de lumière, comportant une source de lumière allongée, de préférence formée de plusieurs DEL (60), ainsi qu'un système optique (50) selon l'une des revendications précédentes.
  9. Agencement pour l'émission de lumière selon la revendication 8 et comportant les caractéristiques de la revendication 2,
    caractérisé en ce
    que la source de lumière est formée de plusieurs DEL (60) disposées les unes derrière les autres dans la direction longitudinale, dans lequel les écarts entre les lamelles de grille (45) dans la direction longitudinale (I) sont adaptés à l'agencement des DEL (60),
    dans lequel en particulier, dans une projection perpendiculaire au sens d'irradiation de lumière, respectivement une lamelle de grille (45) est disposée entre deux DEL (60) adjacentes ou chaque DEL (60) est limitée latéralement par deux lamelles de grille (45).
  10. Agencement pour l'émission de lumière selon la revendication 8 ou 9,
    caractérisé en ce
    que la source de lumière et le système optique (50) forment une unité modulaire, laquelle peut être raccordée en tant que luminaire (100) à un système de rails porteurs (150).
  11. Agencement pour l'émission de lumière selon la revendication 10,
    caractérisé en ce
    que celui-ci présente un ou plusieurs éléments de mise en contact (110) pour un raccord mécanique et/ou électrique au système de rails porteurs (150), dans lequel les éléments de mise en contact (110) sont de préférence des éléments de mise en contact pouvant pivoter.
EP20209714.3A 2019-12-06 2020-11-25 Système optique permettant d'influencer l'émission lumineuse d'une source lumineuse allongée Active EP3832194B1 (fr)

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AT18166U1 (de) * 2022-04-28 2024-03-15 Zumtobel Lighting Gmbh Optisches Element sowie damit ausgestattete Leuchte

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DE102011079393A1 (de) * 2011-07-19 2013-01-24 Zumtobel Lighting Gmbh Anordnung zur Lichtabgabe
WO2013046081A1 (fr) * 2011-09-27 2013-04-04 Koninklijke Philips Electronics N.V. Système d'éclairage pour émettre un faisceau lumineux formé et luminaire
WO2014124229A1 (fr) * 2013-02-08 2014-08-14 Quarkstar Llc Système d'éclairage reposant sur des dispositifs d'éclairage actifs et passifs
AT13726U1 (de) * 2013-03-28 2014-07-15 Zumtobel Lighting Gmbh Leuchte
DE102014222169B4 (de) * 2014-10-30 2024-09-26 Zumtobel Lighting Gmbh Optisches Element sowie Anordnung zur Lichtabgabe mit einem optischen Element
DE102014119616A1 (de) * 2014-12-23 2016-06-23 Siteco Beleuchtungstechnik Gmbh LED-Linsenkörper zur Erzeugung eines Direkt- und Indirektlichtanteils
DE202017102009U1 (de) * 2017-04-05 2018-07-09 Zumtobel Lighting Gmbh Leuchte

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