EP3765783B1 - Spotlights having controllable light distribution - Google Patents
Spotlights having controllable light distribution Download PDFInfo
- Publication number
- EP3765783B1 EP3765783B1 EP19712718.6A EP19712718A EP3765783B1 EP 3765783 B1 EP3765783 B1 EP 3765783B1 EP 19712718 A EP19712718 A EP 19712718A EP 3765783 B1 EP3765783 B1 EP 3765783B1
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- leds
- clusters
- cluster
- led
- headlamp
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- 238000009826 distribution Methods 0.000 title claims description 15
- 230000003287 optical effect Effects 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 9
- 230000004907 flux Effects 0.000 description 12
- 241001136792 Alle Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
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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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/105—Outdoor lighting of arenas or the like
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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
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
Definitions
- the present invention relates to a headlight for stationary mounting in an indoor or outdoor space, in particular to stadium headlights, and in particular to headlights with LEDs (which means any form of semiconductor light sources, including organic LEDs) arranged in a cluster in the headlight are.
- LEDs which means any form of semiconductor light sources, including organic LEDs
- LVK light distribution curve to be generated
- LVK which should generally be rotationally symmetrical in a conic curve, have a given half divergence angle and a maximum luminous intensity, which preferably lies along the optical axis of the headlight.
- certain levels of illuminance must be achieved. This can only be achieved by superimposing different LDCs with different half beam angles and maximum light intensities, since the position of the spotlights in the stadium is different and the distance between the spotlights and the area to be illuminated is different.
- Lighting devices with one or more LED clusters are disclosed in the following publications: U.S. 2015/009677 A1 , U.S. 2009/046453 A1 , WO 2014/117704 A2 , U.S. 2012/068615 A1 , U.S. 2012/319616 A1 , U.S. 2017/002987 A1 and EP 2 985 512 A1 .
- the object of the present invention is to provide a stationary headlight whose light distribution with LEDs can be adapted to the local conditions for fulfilling the lighting task in the simplest possible way.
- a special feature of the headlight according to the invention is that the LEDs within a cluster can be switched on and off and/or dimmed independently of at least some of the other LEDs within the cluster.
- different LDCs can be achieved by a cluster, possibly with an associated optical component of the cluster.
- Both symmetrical and asymmetrical LDCs can be achieved by switching LEDs on and off within the cluster depending on the design of the cluster and the different patterns in which the LEDs are switched on and off within the cluster.
- the LVKs can even be continuously transformed into each other. In a cluster, LEDs that are not needed for the desired light distribution of the headlight simply cannot be fitted on the LED circuit board. A continuous transformation of the LVKs is then only possible to a limited extent due to the remaining LEDs in the cluster.
- the cluster has common optics for all LEDs in the cluster.
- a reflector and/or a lens in particular a lens with total internal reflection, can be provided for all LEDs in the cluster.
- the optical component does not have to be changed to adjust the LVK. It is fixed to the LEDs in the cluster and the light is distributed by switching the LEDs on and off or dimming them within the cluster. This is a significant advantage compared to the systems in the prior art, in which a lens or a reflector has to be moved in a complex manner relative to the light sources or has to be manufactured individually for the headlight in order to fulfill the special lighting task according to the local conditions of the headlight be able.
- the cluster is formed by a square matrix of LEDs.
- an LED cluster may include a 3x3, 4x4, or 5x5 matrix of LEDs.
- the larger the cluster the more variations are possible for switching the LEDs within the cluster.
- the larger the basic cluster the more different assembly variants of LEDs are possible.
- the cluster can also be formed by two LED rows running perpendicular to one another or rectangular LED matrices running perpendicular to one another.
- the LED cluster has an arrangement of LEDs that is symmetrical to two mirror planes, the mirror planes having the perpendicular bisector through the cluster as a common line of intersection and being perpendicular to one another.
- This symmetry of the LED cluster is suitable for circular light distributions and also light distributions that extend in different directions along the main axes of the mirror-symmetrically arranged LEDs by switching LEDs on and off in a targeted manner or by dimming LEDs.
- asymmetrical LDCs can also be achieved with this arrangement.
- this type of LED cluster offers a high degree of variation in terms of the light distribution to be achieved.
- the headlight also has a plurality of the clusters mentioned above, which are arranged in the headlight at a distance from one another, and in particular in a regular array.
- the clusters can all be designed identically and arranged identically to one another.
- the LEDs within the cluster can also be controlled identically. This results in the same advantage as in the previously mentioned embodiments in relation to the variation of the light distribution, with the light intensity being increased overall.
- this embodiment also offers the advantage that the different clusters can be controlled differently. Entire clusters can be switched on or off. Furthermore, the LEDs within the cluster can be switched on and off or dimmed differently. As a result, a very high variation in the LVKs to be achieved is possible.
- the multiple clusters each individually have associated optics, e.g. B. a reflector or a lens, preferably a lens with total internal reflection on.
- associated optics e.g. B. a reflector or a lens, preferably a lens with total internal reflection on.
- the clusters can also be arranged in the headlight with different rotations to one another.
- the LVKs of the individual clusters are superimposed to form an overall light distribution that differs from the light distribution of the individual clusters. For example, asymmetries in the overall light distribution can be compensated for, which the individual clusters would produce due to the shape of the cluster.
- a single LED cluster 2 is shown. It comprises nine LEDs 1 arranged in a 3x3 matrix.
- only one LED cluster is required to form a headlight.
- multiple of the LED clusters 2 are provided in the headlight to form a multiple cluster array.
- the clusters 2 are each arranged at a distance a in the array. The distance a between the clusters and their nearest neighbors (measured from center to center) is greater than the distance between the LEDs 1 within the cluster.
- the LEDs within the clusters can be switched on and off or dimmed individually.
- the influence of this circuit on the light intensity distribution curve (specified in the light intensity normalized to the total luminous flux), the light intensity (absolute), the half beam angle and the luminous flux in the various switching states is shown in the Figures 3a to 3c shown.
- Figure 3a shows the 3x3 LED cluster in which only the middle LED 4 is switched on and the remaining LEDs 5 are switched off or are not populated on the circuit board.
- Figure 3b shows the case in which only the four outer LEDs 5 are switched off or are not present on the circuit board and the remaining LEDs 4 are switched on.
- Figure 3c shows the case that all nine LEDs 5 of the 3x3 LED cluster are switched on. Since the optical components of the cluster are always the same, the LEDs that are switched on differently result in different LDCs or luminous fluxes and efficiencies.
- Figure 3a is the greatest luminous intensity (Imax1) in relation to the total luminous flux of the luminaire.
- the half peak angle (half peak angle 1) is the lowest and at the same time the luminous flux is at the lowest value at Imax1.
- FIGs 4 and 5 show alternatives for the LED cluster.
- an LED cluster 6 is shown with a 4x4 matrix of LEDs.
- figure 5 shows an LED cluster 7 in the form of a 5 ⁇ 5 matrix.
- the larger clusters allow a higher variation of patterns in which the LEDs can be switched on and off or dimmed.
- symmetrical or oval light distribution curves can also be generated using switching states of the LEDs, as in Figures 6 and 7 are shown.
- an asymmetrical LVK is generated in that in the 5x5 matrix of the LED cluster 7 only 3x3 LEDs 4 are operated in one corner, while the other LEDs 5 are switched off.
- LEDs 4 turned on, which are turned on symmetrically about a central axis of the LED cluster 7 of the 5x5 matrix.
- an oval LVK can be generated.
- the details of asymmetric or oval LVK each relate to an LVK measured in a section of the envelope of a cone perpendicular to the optical axis of the headlight, which runs along the perpendicular bisector of the cluster.
- a lens 3 is provided above a 3 ⁇ 3 LED cluster 2.
- the lens 3 includes a light entry area and a light exit area at which light radiation is refracted. Furthermore, the lens 3 also has side wall areas at which light rays are totally reflected. Different beam paths in the lens are activated by switching on or off individual LEDs 4, 5 in the LED cluster.
- Figure 8a only the middle LED 4 is switched on while all other LEDs 5 are switched off. Due to the fact that only a middle LED 5 is switched on, the light beams L11, L12 and L13 leave the lens 3 almost parallel and thus produce a high Imax or a small half divergence angle.
- Figure 8b all nine lenses 5 of the 3x3 LED cluster switched on.
- an LED cluster 8 is shown, in which the LEDs approximate a circle.
- Embodiments with LED clusters, in which the LEDs are mirror-symmetrical to two on top of one another, are very general perpendicular vertical mirror planes are aligned, preferred because they can approximate a circular shape and are therefore particularly suitable for the usual optical devices.
- the high number of LEDs 1 - in figure 9 37 pieces in total - are preferred to create a wide variety of possible LVKs.
- FIG 10 an embodiment is shown in which a cluster 11 with 5 LEDs arranged in a cross shape is combined with only a single LED 12 in an array.
- figure 11 10 shows an arrangement with dimmed LEDs in two clusters 10.
- the outer four LEDs in a 3 ⁇ 3 cluster are dimmed by around 50%. This results in an Imax that is between an arrangement with nine LEDs on and an arrangement with five LEDs on. A stepless setting of Imax or the half-value angle is therefore possible.
- nxn clusters can be used.
- Asymmetric clusters are also possible.
- individual LEDs within a cluster that are not required for the desired light distributions can also be omitted completely. In this case, a blank is simply provided at the relevant point in the cluster. However, the remaining LEDs in the cluster are controllable as previously described.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Description
Die vorliegende Erfindung bezieht sich auf einen Scheinwerfer zur stationären Montage in einem Innen- oder Außenraum, insbesondere auf Stadionscheinwerfer, und insbesondere auf Scheinwerfer mit LEDs (worunter jede Form von Halbleiterlichtquellen verstanden werden, einschließlich organischer LEDs), die in einem Cluster in dem Scheinwerfer angeordnet sind.The present invention relates to a headlight for stationary mounting in an indoor or outdoor space, in particular to stadium headlights, and in particular to headlights with LEDs (which means any form of semiconductor light sources, including organic LEDs) arranged in a cluster in the headlight are.
In Scheinwerfern der eingangs genannten Art hat sich zur Steuerung der Lichtlenkung eine präzise Anordnung von Linsenelementen und Reflektorelementen durchgesetzt. Die zu erzeugende Lichtverteilungskurve, LVK, welche in einer Kegelschnittkurve in der Regel rotationssymmetrisch sein soll, haben einen gegebenen Halbstreuwinkel und eine maximale Lichtstärke, welche vorzugsweise entlang der optischen Achse des Scheinwerfers liegt. Je nach Beleuchtungsaufgabe, z.B. zur Beleuchtung eines Fußballplatzes, müssen gewissen Beleuchtungsstärken erreicht werden. Dies ist nur durch die Überlagerung verschiedener LVK, mit unterschiedlichen Halbstreuwinkel und maximalen Lichtstärken zu realisieren, da die Position der Scheinwerfer im Stadion unterschiedlich sind und der Abstand zwischen den Scheinwerfern und der zu beleuchtenden Fläche unterschiedlich ist. Dadurch werden unterschiedliche LVKs und somit unterschiedliche optische Komponenten oder beweglich optische System im Scheinwerfer benötigt. Dies ist verhältnismäßig aufwendig, da die optischen Komponenten entweder für die einzelnen LEDs oder die LED-Cluster angepasst werden müssen oder ein aufwendiger Verstellmechanismus innerhalb des Scheinwerfers für die optischen Komponenten eingefügt werden muss.In headlights of the type mentioned at the outset, a precise arrangement of lens elements and reflector elements has become established for controlling the direction of the light. The light distribution curve to be generated, LVK, which should generally be rotationally symmetrical in a conic curve, have a given half divergence angle and a maximum luminous intensity, which preferably lies along the optical axis of the headlight. Depending on the lighting task, eg to illuminate a soccer field, certain levels of illuminance must be achieved. This can only be achieved by superimposing different LDCs with different half beam angles and maximum light intensities, since the position of the spotlights in the stadium is different and the distance between the spotlights and the area to be illuminated is different. As a result, different LVKs and thus different optical components or movable optical systems are required in the headlight. This is relatively complex, since the optical components either have to be adapted for the individual LEDs or the LED clusters, or a complex adjustment mechanism has to be inserted within the headlight for the optical components.
Beleuchtungsvorrichtungen mit einem oder mehreren LED-Clustern, welche teilweise auch Optiken aufweisen, sind in folgenden Druckschriften offenbart:
Aufgabe der vorliegenden Erfindung ist es, einen stationären Scheinwerfer bereitzustellen, dessen Lichtverteilung mit LEDs auf möglichst einfache Weise auf die örtlichen Bedingungen zur Erfüllung der Beleuchtungsaufgabe angepasst werden kann.The object of the present invention is to provide a stationary headlight whose light distribution with LEDs can be adapted to the local conditions for fulfilling the lighting task in the simplest possible way.
Gelöst wird die Aufgabe durch einen Scheinwerfer nach Anspruch 1.The problem is solved by a headlight according to
Eine Besonderheit des erfindungsgemäßen Scheinwerfer besteht darin, dass die LEDs innerhalb eines Clusters unabhängig von wenigstens einigen der übrigen LEDs innerhalb des Clusters zu- und abschaltbar und/oder dimmbar sind. Dadurch wird erreicht, dass durch ein Cluster, ggf. mit zugeordneter optischer Komponente des Clusters, unterschiedliche LVKs erzielt werden können. Sowohl symmetrische als auch asymmetrische LVKs können durch Zu- und Abschalten von LEDs innerhalb des Clusters erzielt werden abhängig von der Ausgestaltung des Clusters und der unterschiedlichen Muster, in denen die LEDs innerhalb des Clusters zu- und abgeschaltet werden. Durch unabhängiges Dimmen der LEDs innerhalb des Clusters können die LVKs sogar kontinuierlich ineinander umgeformt werden. In einem Cluster können LEDs, welche für die gewünschte Lichtverteilung des Scheinwerfers nicht gebraucht werden, auch einfach nicht auf der LED-Platine bestückt werden. Eine kontinuierliche Umformung der LVKs ist dann nur eingeschränkt durch die verbleibenden LEDs im Cluster möglich.A special feature of the headlight according to the invention is that the LEDs within a cluster can be switched on and off and/or dimmed independently of at least some of the other LEDs within the cluster. As a result, different LDCs can be achieved by a cluster, possibly with an associated optical component of the cluster. Both symmetrical and asymmetrical LDCs can be achieved by switching LEDs on and off within the cluster depending on the design of the cluster and the different patterns in which the LEDs are switched on and off within the cluster. By independently dimming the LEDs within the cluster, the LVKs can even be continuously transformed into each other. In a cluster, LEDs that are not needed for the desired light distribution of the headlight simply cannot be fitted on the LED circuit board. A continuous transformation of the LVKs is then only possible to a limited extent due to the remaining LEDs in the cluster.
Erfindungsgemäß weist das Cluster eine gemeinsame Optik für alle LEDs in dem Cluster auf. Beispielsweise kann ein Reflektor und/oder eine Linse, insbesondere eine Linse mit interner Totalreflexion, für alle LEDs in dem Cluster vorgesehen sein. Die optische Komponente muss zur Einstellung der LVK jedoch nicht geändert werden. Sie ist fest zu den LEDs im Cluster angeordnet und die Lichtverteilung wird durch das Zu- und Abschalten bzw. Dimmen der LEDs innerhalb des Clusters vorgenommen. Dies ist ein wesentlicher Vorteil gegenüber den Systemen im Stand der Technik, bei welchen in aufwendiger Weise eine Linse oder ein Reflektor gegenüber den Leuchtmitteln verschoben werden muss oder für den Scheinwerfer individuell gefertigt werden muss, um die besondere Beleuchtungsaufgabe gemäß den örtlichen Bedingungen des Scheinwerfers erfüllen zu können.According to the invention, the cluster has common optics for all LEDs in the cluster. For example, a reflector and/or a lens, in particular a lens with total internal reflection, can be provided for all LEDs in the cluster. However, the optical component does not have to be changed to adjust the LVK. It is fixed to the LEDs in the cluster and the light is distributed by switching the LEDs on and off or dimming them within the cluster. This is a significant advantage compared to the systems in the prior art, in which a lens or a reflector has to be moved in a complex manner relative to the light sources or has to be manufactured individually for the headlight in order to fulfill the special lighting task according to the local conditions of the headlight be able.
Gemäß einer bevorzugten Ausführungsform ist das Cluster durch eine quadratische Matrix von LEDs gebildet. Beispielsweise kann ein LED-Cluster eine 3x3, 4x4 oder 5x5-Matrix von LEDs umfassen. Je größer das Cluster, desto mehr Variationen für die Schaltung der LEDs innerhalb des Clusters sind möglich. Je größer das Grund-Cluster ist, desto mehr verschiedene Bestückungsvarianten von LEDs sind möglich.According to a preferred embodiment, the cluster is formed by a square matrix of LEDs. For example, an LED cluster may include a 3x3, 4x4, or 5x5 matrix of LEDs. The larger the cluster, the more variations are possible for switching the LEDs within the cluster. The larger the basic cluster, the more different assembly variants of LEDs are possible.
Gemäß einer weiteren Ausführungsform kann das Cluster auch durch zwei senkrecht zueinander verlaufenden LED-Reihen oder senkrecht zueinander verlaufende rechteckige LED-Matrizen gebildet sein.According to a further embodiment, the cluster can also be formed by two LED rows running perpendicular to one another or rectangular LED matrices running perpendicular to one another.
Erfindungsgemäß weist das LED-Cluster eine Anordnung von LEDs auf, die symmetrisch zu zwei Spiegelebenen ist, wobei die Spiegelebenen die Mittelsenkrechte durch das Cluster als gemeinsame Schnittgerade aufweisen und senkrecht zueinander liegen. Diese Symmetrie des LED-Clusters ist geeignet, um kreisrunde Lichtverteilungen sowie durch gezieltes Zu- und Abschalten von LEDs oder Dimmen von LEDs auch Lichtverteilungen zu erzeugen, die sich in unterschiedliche Richtungen entlang der Hauptachsen der spiegelsymmetrisch angeordneten LEDs erstrecken. Durch asymmetrisches Schalten der LEDs innerhalb der symmetrischen Anordnung lassen sich mit dieser Anordnung auch asymmetrische LVKs erzielen. Generell bietet diese Art von LED-Cluster eine hohe Variation in Bezug auf zu erzielende Lichtverteilungen.According to the invention, the LED cluster has an arrangement of LEDs that is symmetrical to two mirror planes, the mirror planes having the perpendicular bisector through the cluster as a common line of intersection and being perpendicular to one another. This symmetry of the LED cluster is suitable for circular light distributions and also light distributions that extend in different directions along the main axes of the mirror-symmetrically arranged LEDs by switching LEDs on and off in a targeted manner or by dimming LEDs. By switching the LEDs asymmetrically within the symmetrical arrangement, asymmetrical LDCs can also be achieved with this arrangement. In general, this type of LED cluster offers a high degree of variation in terms of the light distribution to be achieved.
Erfindungsgemäß weist der Scheinwerfer auch mehrere der vorhergehend genannten Cluster auf, die im Scheinwerfer beabstandet zueinander, und insbesondere in einem regelmäßigen Array, angeordnet sind. Durch Vorsehen mehrerer Cluster wird insgesamt die Lichtstärke des Scheinwerfers erhöht, da sich das Licht der einzelnen Cluster überlagert. Die Cluster können alle identisch ausgeführt sein und identisch zueinander angeordnet sein. In dieser Ausführung können auch die LEDs innerhalb der Cluster jeweils identisch angesteuert werden. Dadurch ergibt sich der gleiche Vorteil, wie bei den vorhergehend genannten Ausführungsformen in Bezug auf die Variation der Lichtverteilung, wobei insgesamt die Lichtstärke erhöht ist. Allerdings bietet diese Ausführungsform auch noch den Vorteil, dass die unterschiedlichen Cluster verschieden angesteuert werden können. Es können ganze Cluster hinzugeschaltet oder abgeschaltet werden. Ferner können die LEDs innerhalb der Cluster unterschiedlich an- und ausgeschaltet bzw. gedimmt werden. Dadurch ist eine sehr hohe Variation bei den zu erzielenden LVKs möglich.According to the invention, the headlight also has a plurality of the clusters mentioned above, which are arranged in the headlight at a distance from one another, and in particular in a regular array. By providing several clusters, the luminous intensity of the headlight is increased overall, since the light from the individual clusters is superimposed. The clusters can all be designed identically and arranged identically to one another. In this version, the LEDs within the cluster can also be controlled identically. This results in the same advantage as in the previously mentioned embodiments in relation to the variation of the light distribution, with the light intensity being increased overall. However, this embodiment also offers the advantage that the different clusters can be controlled differently. Entire clusters can be switched on or off. Furthermore, the LEDs within the cluster can be switched on and off or dimmed differently. As a result, a very high variation in the LVKs to be achieved is possible.
Die mehreren Cluster weisen jeweils einzeln eine zugeordnete Optik, z. B. einen Reflektor oder eine Linse, vorzugsweise eine Linse mit interner Totalreflektion, auf.The multiple clusters each individually have associated optics, e.g. B. a reflector or a lens, preferably a lens with total internal reflection on.
Gemäß einer Weiterbildung der zuletzt genannten Ausführungsformen mit mehreren Clustern können die Cluster ferner auch unterschiedlich zueinander gedreht in dem Scheinwerfer angeordnet sein. Dadurch überlagern sich die LVKs der einzelnen Cluster zu einer Gesamtlichtverteilung, die sich von der Lichtverteilung der einzelnen Cluster unterscheidet. Z.B. lassen sich dadurch Asymmetrien in der Gesamtlichtverteilung ausgleichen, welche die jeweils einzelnen Cluster aufgrund der Formgebung des Clusters, hervorbringen würden.According to a further development of the last-mentioned embodiments with a plurality of clusters, the clusters can also be arranged in the headlight with different rotations to one another. As a result, the LVKs of the individual clusters are superimposed to form an overall light distribution that differs from the light distribution of the individual clusters. For example, asymmetries in the overall light distribution can be compensated for, which the individual clusters would produce due to the shape of the cluster.
Weitere Merkmale und Vorteil der vorliegenden Erfindung werden aus der nachfolgenden Beschreibung bevorzugter Ausführungsformen deutlich, die im Zusammenhang mit den beigefügten Figuren gegeben wird. In den Figuren ist Folgendes dargestellt:
Figur 1- zeigt eine 3x3-LED-Cluster.
Figur 2- zeigt ein 3x3-Array mit jeweils einem 3x3-LED-Cluster.
- Figuren 3a - 3c
- zeigen die LVK und den Lichtstrom eines 3x3-LED-Cluster, wobei eine, fünf bzw. neun LEDs eingeschaltet sind.
Figur 4- zeigt ein 4x4-LED-Cluster.
Figur 5- zeigt ein 5x5-LED-Cluster.
Figuren 6 und 7- zeigen das 5x5-LED-Cluster, wobei LEDs in unterschiedlichen Musters eingeschaltet sind.
- Figuren 8a und 8b
- zeigen eine Schnittansicht eines 3x3-LED-Clusters mit Totalreflexionslinse, wobei nur eine bzw. alle LEDs eingeschaltet sind.
- Figur 9
- zeigt ein näherungsweise rundes LED-Cluster mit 37 LEDs.
- Figur 10
- zeigt ein Array mit zwei unterschiedlichen LED-Cluster.
Figur 11- zeigt ein Array mit zwei gleichen LED-Cluster.
- figure 1
- shows a 3x3 LED cluster.
- figure 2
- shows a 3x3 array, each with a 3x3 LED cluster.
- Figures 3a - 3c
- show the LDC and the luminous flux of a 3x3 LED cluster, with one, five or nine LEDs switched on.
- figure 4
- shows a 4x4 LED cluster.
- figure 5
- shows a 5x5 LED cluster.
- Figures 6 and 7
- show the 5x5 LED cluster with LEDs turned on in different patterns.
- Figures 8a and 8b
- show a sectional view of a 3x3 LED cluster with a total reflection lens, with only one or all LEDs switched on.
- figure 9
- shows an approximately round LED cluster with 37 LEDs.
- figure 10
- shows an array with two different LED clusters.
- figure 11
- shows an array with two identical LED clusters.
Bezugnehmend auf
Zur Bildung eines Scheinwerfers ist in der einfachsten Form lediglich ein LED-Cluster notwendig. Gemäß einer bevorzugten Ausführungsform, die in
In den Ausführungsformen der vorliegenden Erfindung lassen sich die LEDs innerhalb der Cluster einzeln ein- und ausschalten oder dimmen. Den Einfluss dieser Schaltung auf die Lichtstärkeverteilungskurve (angegeben in der Lichtstärke normiert auf den Gesamtlichtstrom), die Lichtstärke (absolut), den Halbstreuwinkel sowie den Lichtstrom bei den verschiedenen Schaltungszuständen ist in den
Die
In der Ausführungsform nach
In der Ausführungsform gemäß
Die hohe Anzahl von LEDs 1 - in
In
Zahlreiche Variationen der vorhergehend beschriebenen Ausführungsformen sind im Rahmen der Erfindung möglich, welche durch die Ansprüche definiert ist. Beispielsweise können verschiedene Kombinationen von nxn-Clustern verwendet werden. Ferner sind auch asymmetrische Cluster möglich. Bevorzugte Ausführungsformen können auch einzelne LEDs innerhalb eines Clusters, die für die gewünschten Lichtverteilungen nicht erforderlich sind, komplett entfallen. In diesem Fall ist an der betreffenden Stelle des Clusters einfach eine Leerstelle vorgesehen. Die übrigen LEDs in dem Cluster sind jedoch regelbar, wie vorhergehend beschrieben.Numerous variations of the embodiments described above are possible within the scope of the invention, which is defined by the claims. For example, different combinations of nxn clusters can be used. Asymmetric clusters are also possible. In preferred embodiments, individual LEDs within a cluster that are not required for the desired light distributions can also be omitted completely. In this case, a blank is simply provided at the relevant point in the cluster. However, the remaining LEDs in the cluster are controllable as previously described.
- 11
- LEDLEDs
- 22
- 3x3-LED-Cluster3x3 LED cluster
- 33
- Linselens
- 44
- LED, eingeschaltetLED, switched on
- 55
- LED, ausgeschaltetLED, off
- 66
- 4x4-LED-Cluster4x4 LED cluster
- 77
- 5x5-LED-Cluster5x5 LED cluster
- 88th
- LED-Cluster mit 37 LEDsLED cluster with 37 LEDs
- 1111
- kreuzförmiges LED-Clustercross-shaped LED cluster
- 1212
- einzelne LEDsingle LED
- aa
- Abstand der LED-Cluster im ArraySpacing of the LED clusters in the array
Claims (7)
- A headlamp for stationary mounting in an interior or exterior space, in particular a stadium headlamp,
the headlamp comprising a plurality of clusters (2, 6, 7, 11) each having a plurality of LEDs (1), the clusters being arranged in the headlamp at a distance from one another, wherein individual ones of the LEDs in each of the clusters can be switched on and off and/or dimmed independently of at least some of the remaining LEDs in the cluster, wherein each of the clusters has its own optical system (3) for all the LEDs in the relevant cluster in each case, and wherein the LED clusters each have an arrangement of LEDs which is symmetrical to two mirror planes, wherein the mirror planes have the perpendicular bisector through the cluster as common degrees of intersection and are perpendicular to one another, characterized in that the LEDs in each of the clusters can be switched and/or dimmed separately in different patterns, which are each symmetrical with respect to said mirror planes, and the LEDs can also be switched or dimmed in patterns which are asymmetrical with respect to said mirror planes, wherein asymmetrical switching of the LEDs within the symmetrical arrangement achieves an asymmetrical light distribution curve. - The headlamp according to claim 1, wherein the optics are formed by a reflector and/or a lens, in particular by a lens (3) with total internal reflection.
- The headlamp according to any one of the preceding claims, wherein the clusters (2, 6, 7) are each formed by a square matrix of LEDs (1).
- The headlamp according to claim 3, wherein the LED clusters (2, 6, 7) are each formed by a 3x3, 4x4 or 5x5 matrix of LEDs.
- The headlamp according to any one of claims 1 to 3, wherein the clusters (11) are each formed by two LED lines running perpendicular to one another or rectangular LED matrices running perpendicular to one another.
- The headlamp according to any one of the preceding claims, wherein the clusters (2, 6, 7, 11) are arranged in the headlamp rotated relative to one another.
- The headlamp according to any one of the preceding claims, wherein at least two clusters (2, 6, 7, 11) have a different number, arrangement and/or color of LEDs.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018106223.0A DE102018106223A1 (en) | 2018-03-16 | 2018-03-16 | Headlamp with adjustable light distribution |
PCT/EP2019/056552 WO2019175390A1 (en) | 2018-03-16 | 2019-03-15 | Spotlights having controllable light distribution |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3765783A1 EP3765783A1 (en) | 2021-01-20 |
EP3765783B1 true EP3765783B1 (en) | 2022-05-04 |
Family
ID=65894981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19712718.6A Active EP3765783B1 (en) | 2018-03-16 | 2019-03-15 | Spotlights having controllable light distribution |
Country Status (4)
Country | Link |
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EP (1) | EP3765783B1 (en) |
DE (1) | DE102018106223A1 (en) |
PL (1) | PL3765783T3 (en) |
WO (1) | WO2019175390A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020130685A1 (en) | 2020-11-20 | 2022-05-25 | Bartenbach Holding Gmbh | Spotlights and lights with a variety of such spots |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005022832A1 (en) * | 2005-05-11 | 2006-11-16 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Headlamp for film and video recordings |
DE102007046873A1 (en) * | 2006-09-28 | 2008-04-10 | Zweverink, Birgit | Wall and floor covering, particularly for use as tile, tiled area, paving-stone or glazed tile, is made of ceramics, natural stone, natural stone-similar materials, concrete, wood or plastic, which is applied loosely or fixed by adhesive |
US8585253B2 (en) * | 2009-08-20 | 2013-11-19 | Illumitex, Inc. | System and method for color mixing lens array |
US8820963B2 (en) * | 2011-06-14 | 2014-09-02 | Osram Sylvania Inc. | Solid state light fixture with a tunable angular distribution |
US9470406B2 (en) * | 2012-09-24 | 2016-10-18 | Terralux, Inc. | Variable-beam light source and related methods |
CN103968268B (en) * | 2013-01-31 | 2016-09-21 | 深圳市光峰光电技术有限公司 | A kind of LED light source system and LED light device |
CN203258423U (en) * | 2013-04-11 | 2013-10-30 | 深圳市绎立锐光科技开发有限公司 | LED unit module, light-emitting device and light source system |
JP6682773B2 (en) * | 2015-07-03 | 2020-04-15 | ウシオ電機株式会社 | LED lighting device |
-
2018
- 2018-03-16 DE DE102018106223.0A patent/DE102018106223A1/en active Pending
-
2019
- 2019-03-15 PL PL19712718.6T patent/PL3765783T3/en unknown
- 2019-03-15 WO PCT/EP2019/056552 patent/WO2019175390A1/en active Application Filing
- 2019-03-15 EP EP19712718.6A patent/EP3765783B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
PL3765783T3 (en) | 2022-08-01 |
EP3765783A1 (en) | 2021-01-20 |
WO2019175390A1 (en) | 2019-09-19 |
DE102018106223A1 (en) | 2019-09-19 |
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