EP1220578A2 - Process and device for changing the colour temperature - Google Patents
Process and device for changing the colour temperature Download PDFInfo
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- EP1220578A2 EP1220578A2 EP01890346A EP01890346A EP1220578A2 EP 1220578 A2 EP1220578 A2 EP 1220578A2 EP 01890346 A EP01890346 A EP 01890346A EP 01890346 A EP01890346 A EP 01890346A EP 1220578 A2 EP1220578 A2 EP 1220578A2
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- light
- emitting diodes
- lighting device
- color
- switching power
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
Definitions
- the invention relates to a method for changing the color temperature and brightness a lighting device, which comprises at least two light-emitting diodes, the light emit different shades.
- the invention also relates to a lighting device with adjustable color temperature and brightness.
- Color perception / perception is a psychological phenomenon, which is already well understood through numerous experiments. It has been found that yourself a person's well-being in a room by appropriate choice of lighting can be increased significantly.
- the color temperature gives the color sensation caused by a luminous body on. It is the temperature that a black body would have to reach in order to be the same To generate color sensation.
- Illuminations where different color temperatures can be set are, for example, from the field of interior design - here mainly so-called Dimmer - became known.
- a device of the type mentioned at the outset is presented in DE 199 09 630.
- illuminants for example fluorescent tubes, are different Colors, but no red color, as well as a diffuser for generating light different Color temperature, used to illuminate a room, setting the desired color temperature from a dedicated lighting control system is made.
- a disadvantage of the proposed solution is above all that the geometric Dimensions of the diffuser and the fluorescent tubes used in the shape of the Lighting is severely restricted. Therefore, the well-known lighting is suitable, for example not even as table lighting.
- DE 41 15 187 Another device and a method for generating light of variable color temperature is disclosed in DE 41 15 187.
- a device with fluorescent tubes for use which are surrounded by reflectors, which side surfaces have one of which is convex and red while another Side surface is gold colored and flat and a third side surface is concave and silver colored is trained.
- the fluorescent tube emits a light spectrum that that of sunlight on Earth on the day of the summer solstice around noon. ever according to the seasons are used to generate a favorable color temperature in a specifiable Order the reflectors are irradiated.
- a disadvantage of the device known from DE 41 15 187 is above all that they are expensive to manufacture and above due to the specially designed reflectors is also complicated to install. Furthermore, the spectral bandwidth is adjustable Color temperature relatively low.
- This object is achieved with a method of the type mentioned in the introduction in that the color temperature of at least three light emitting diodes, the light of different colors emit, via whose supply voltage and / or whose supply current is set.
- the same color tone can be used at the same time emitting LEDs are operated.
- the light emitting diodes of one color become parallel operated.
- the supply voltages and / or currents of at least one are preferred controllable / adjustable switching power supply supplied.
- a tried and tested embodiment of the invention provides that the color temperature is set via several switching power supplies, the LEDs being the same Hue emit be controlled via a common switching power supply.
- the light-emitting diodes are in the form of a matrix to be ordered.
- a particularly large range of different color temperatures can be set that the light emitting diodes emit red, green and blue light.
- An illumination device is particularly suitable for implementing the method according to the invention of the type mentioned, in which at least two light-emitting diodes are provided that emit light of different colors, the at least two Light emitting diodes at least one controllable / adjustable switching power supply, which for each of the light emitting diodes provides an adjustable output voltage and / or output current, upstream is.
- a cheap variant of the invention is that the same color light emitting diodes are connected in parallel.
- a very favorable variant of the invention provides that the light-emitting diodes are in the form of a Matrix are arranged.
- the light-emitting diodes are preferably red, green and blue.
- a lighting device BEL according to the invention for light-emitting diodes which emit the same color tone has a common switching power supply STN1, STN2, STN3, the output voltage U A1 , U A2 , U A3 and output current I A1 , I A2 , I A3 can be regulated via a control AST, for example a suitably equipped computer.
- the input voltage U N of the switching power supply STN1-STN3 can be, for example, the mains voltage.
- the LEDs D b , D g , D r are operated in the forward direction, their brightness increases with their operating current. However, there is a maximum permissible current which must not be significantly exceeded, since otherwise the LEDs D b , D g , D r can be destroyed. Depending on the technological design of the light emitting diodes D b , D g , D r , the maximum operating current and the maximum operating voltage can differ significantly from type to type. In order to limit the operating current, a series resistor Rv is connected upstream of each light-emitting diode D b , D g , D r .
- the output voltage U A1 , U A2 , U A3 and / or the output current, I A1 , I A2 , I A3 can be proportional to the respective supply voltage or the respective supply current of the light-emitting diodes D b , D g , D r and thus the brightness / intensity of the light emitting diodes D b , D g , D r can be regulated. It has been found that a particularly large spectral bandwidth of the color temperature can be set if the light-emitting diodes D b , D g , D r used have the colors red, green and blue.
- the light-emitting diodes D b , D g , D r which are assigned to a color, can be combined to form blocks.
- the starting point for the perception of the color temperature are those on which it is based physical color stimuli, i.e. those electromagnetic radiation in the area between 380 and 780 nm, which get into the eye and excite special sensory cells there, so that a color sensation arises.
- a color stimulus can also be used as a point in an infinite-dimensional Space in which each axis is the intensity of a particular one Represents wavelength (for example in photons per second). Because there are infinite dimensions Spaces are difficult to display, color stimuli are mostly due to their characterized spectral radiation distribution, which indicates how the radiation power is based the individual regions of the spectrum distributed.
- a predeterminable color temperature can be set by mixing the colors and intensities generated by the light-emitting diodes.
- the color temperature perceived by a person can be changed by selectively switching on or off LEDs D b , D g , D r of a color or by changing the brightness / intensity.
- a common switched-mode power supply SNT4 is provided for all light-emitting diodes D b , D g , D r , which has separately controllable outputs for controlling the color temperature, which outputs are assigned a color to the light-emitting diodes D b , D g , D r is shown in.
- a multi-channel dimmer for example, can be used as the controllable switching power supply SNT4.
- the light emitting diodes D b , D g , D r can also be controlled individually, it being possible for a switching power supply SNT4 to be provided for each light emitting diode D b , D g , D r .
- the lighting device BEL according to FIG. 3 has an illumination field FEL, via which the light-emitting diodes D b , D g , D r are arranged in the form of a matrix MAT.
- This lighting device BEL is particularly suitable as table or make-up lighting.
- a common switching power supply SNT4 is also assigned to the light-emitting diodes D b , D g , D r here.
- the arrangement of light-emitting diodes D b , D g , D r of different colors can be made as desired.
- light emitting diodes D b , D g , D r of one color can form a row and / or column of the matrix MAT.
- Another possibility is to arrange the light-emitting diodes D b , D g , D r in such a way that a light-emitting diode D b , D g , D r of one color is surrounded by different-colored light-emitting diodes D b , D g , D r .
- the lighting device can also be used as table lighting for a workplace Use BEL with a big win. Fatigue can be caused by change the color temperature can be prevented. Also, according to the results of the experimental Psychology moods by the color temperature of the lighting to be influenced. Which is why the lighting device BEL is also suitable for therapeutic Use very well.
- the lighting device BEL according to the invention makes it possible to change the color temperature within a wide spectral range by using light emitting light-emitting diodes D b , D g , D r . It is a further merit of the invention to provide a lighting device BEL which enables an essentially free shaping. With the lighting device BEL according to the invention, practically all types of lighting can be realized (room lighting, table lighting, etc.).
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- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Veränderung der Farbtemperatur und der Helligkeit einer Beleuchtungsvorrichtung, welche zumindest zwei Leuchtdioden umfasst, die Licht unterschiedlicher Farbtöne emittieren.The invention relates to a method for changing the color temperature and brightness a lighting device, which comprises at least two light-emitting diodes, the light emit different shades.
Ebenso betrifft die Erfindung eine Beleuchtungsvorrichtung mit einstellbarer Farbtemperatur und Helligkeit.The invention also relates to a lighting device with adjustable color temperature and brightness.
Bei der Farbwahrnehmung/-empfindung handelt es sich um ein psychologisches Phänomen, das bereits anhand zahlreicher Experimente gut erfasst ist. Es hat sich herausgestellt, dass sich das Wohlbefinden einer Person in einem Raum durch geeignete Wahl der Beleuchtung wesentlich steigern lässt.Color perception / perception is a psychological phenomenon, which is already well understood through numerous experiments. It has been found that yourself a person's well-being in a room by appropriate choice of lighting can be increased significantly.
Die Farbtemperatur gibt die durch einen leuchtenden Körper verursachte Farbempfindung an. Sie ist die Temperatur, die ein schwarzer Strahler annehmen müsste, um die gleiche Farbempfindung zu erzeugen.The color temperature gives the color sensation caused by a luminous body on. It is the temperature that a black body would have to reach in order to be the same To generate color sensation.
Beleuchtungen, bei denen unterschiedliche Farbtemperaturen eingestellt werden können, sind beispielsweise aus dem Bereich der Innenarchitektur - hier vor allem sogenannte Dimmer - bekannt geworden.Illuminations where different color temperatures can be set are, for example, from the field of interior design - here mainly so-called Dimmer - became known.
In der DE 199 09 630 wird eine Vorrichtung der eingangs genannten Art vorgestellt. Bei dieser Vorrichtung werden Leuchtmittel, beispielsweise Leuchtstoffröhren, unterschiedlicher Farben, jedoch keines roter Farbe, sowie ein Diffusor zur Erzeugung von Licht unterschiedlicher Farbtemperatur, zur Beleuchtung eines Raumes erzeugt, wobei die Einstellung der gewünschten Farbtemperatur von einer eigens dafür vorgesehenen Lichtsteueranlage vorgenommen wird.A device of the type mentioned at the outset is presented in DE 199 09 630. at This device illuminants, for example fluorescent tubes, are different Colors, but no red color, as well as a diffuser for generating light different Color temperature, used to illuminate a room, setting the desired color temperature from a dedicated lighting control system is made.
Nachteilig an der vorgeschlagenen Lösung ist vor allem, dass man durch die geometrischen Abmessungen des Diffusors und der verwendeten Leuchtstoffröhren in der Formgebung der Beleuchtung stark eingeschränkt ist. Deshalb eignet sich die bekannte Beleuchtung beispielsweise auch nicht als Tischbeleuchtung.A disadvantage of the proposed solution is above all that the geometric Dimensions of the diffuser and the fluorescent tubes used in the shape of the Lighting is severely restricted. Therefore, the well-known lighting is suitable, for example not even as table lighting.
Eine weitere Vorrichtung und ein Verfahren zur Erzeugung von Licht variabler Farbtemperatur ist in der DE 41 15 187 offenbart. Bei dem vorgestellten Verfahren kommt eine Vorrichtung mit Leuchtstoffröhren zum Einsatz, die von Reflektoren umgeben sind, welche Seitenflächen aufweisen, von denen eine konvex ausgebildet und rot ist, während eine andere Seitenfläche goldfarben und plan ist und eine dritte Seitenfläche konkav und silberfarbig ausgebildet ist. Die Leuchtstoffröhre emittiert ein Lichtspektrum, das demjenigen des Sonnenlichts auf der Erde am Tag der Sommersonnenwende um die Mittagszeit entspricht. Je nach Jahreszeiten werden zur Erzeugung einer günstigen Farbtemperatur in einer vorgebbaren Reihenfolge die Reflektoren bestrahlt.Another device and a method for generating light of variable color temperature is disclosed in DE 41 15 187. In the method presented, there is a device with fluorescent tubes for use, which are surrounded by reflectors, which side surfaces have one of which is convex and red while another Side surface is gold colored and flat and a third side surface is concave and silver colored is trained. The fluorescent tube emits a light spectrum that that of sunlight on Earth on the day of the summer solstice around noon. ever according to the seasons are used to generate a favorable color temperature in a specifiable Order the reflectors are irradiated.
Nachteilig an der aus der DE 41 15 187 bekannt gewordenen Vorrichtung ist vor allem, dass sie aufgrund der speziell ausgeführten Reflektoren teuer in der Herstellung und darüber hinaus aufwendig zu installieren ist. Weiters ist die spektrale Bandbreite der einstellbaren Farbtemperatur relativ gering.A disadvantage of the device known from DE 41 15 187 is above all that they are expensive to manufacture and above due to the specially designed reflectors is also complicated to install. Furthermore, the spectral bandwidth is adjustable Color temperature relatively low.
Es ist daher eine Aufgabe der Erfindung, einen Weg zu schaffen, der es ermöglicht auf eine kostengünstige und einfache Weise die Farbtemperatur einer Lichtquelle über einen möglichst großen Spektralbereich verändern zu können.It is therefore an object of the invention to provide a way that enables one cost-effective and simple way the color temperature of a light source over a possible to be able to change a large spectral range.
Diese Aufgabe wird mit einem Verfahren der eingangs genannten Art dadurch gelöst, dass die Farbtemperatur von zumindest drei Leuchtdioden, die Licht unterschiedlicher Farbtöne emittieren, über deren Speisespannung und/oder deren Speisestrom eingestellt wird.This object is achieved with a method of the type mentioned in the introduction in that the color temperature of at least three light emitting diodes, the light of different colors emit, via whose supply voltage and / or whose supply current is set.
Um eine größere Helligkeit zu erreichen, können gleichzeitig mehrere, den gleichen Farbton emittierende Leuchtdioden betrieben werden.To achieve greater brightness, several, the same color tone can be used at the same time emitting LEDs are operated.
In einer vorteilhaften Variante der Erfindung werden die Leuchtdioden einer Farbe parallel betrieben.In an advantageous variant of the invention, the light emitting diodes of one color become parallel operated.
Bevorzugter Weise werden die Speisespannungen und/oder -ströme von zumindest einem steuer-/regelbaren Schaltnetzteil geliefert.The supply voltages and / or currents of at least one are preferred controllable / adjustable switching power supply supplied.
Eine in der Praxis bewährte Ausführungsform der Erfindung sieht vor, dass die Farbtemperatur über mehrere Schaltnetzteile eingestellt wird, wobei die Leuchtdioden, die den selben Farbton emittieren über je ein gemeinsames Schaltnetzteil gesteuert werden.A tried and tested embodiment of the invention provides that the color temperature is set via several switching power supplies, the LEDs being the same Hue emit be controlled via a common switching power supply.
Weitere Vorteile lassen sich dadurch schaffen, dass die Leuchtdioden in Form einer Matrix angeordnet werden.Further advantages can be created in that the light-emitting diodes are in the form of a matrix to be ordered.
Ein besonders großer Bereich unterschiedlicher Farbtemperaturen lässt sich dadurch einstellen, dass die Leuchtdioden rotes, grünes und blaues Licht emittieren. A particularly large range of different color temperatures can be set that the light emitting diodes emit red, green and blue light.
Zur Realisierung des erfindungsgemäßen Verfahrens eignet sich insbesondere eine Beleuchtungsvorrichtung der eingangs genannten Art, bei welcher zumindest zwei Leuchtdioden vorgesehen sind, die Licht unterschiedlicher Farbtöne emittieren, wobei den zumindest zwei Leuchtdioden zumindest ein steuer-/regelbares Schaltnetzteil, welches für jede der Leuchtdioden eine einstellbare Ausgangsspannung und/oder Ausgangsstrom liefert, vorgeschaltet ist.An illumination device is particularly suitable for implementing the method according to the invention of the type mentioned, in which at least two light-emitting diodes are provided that emit light of different colors, the at least two Light emitting diodes at least one controllable / adjustable switching power supply, which for each of the light emitting diodes provides an adjustable output voltage and / or output current, upstream is.
Eine vorteilhafte Weiterbildung dieser Variante sieht vor, dass mehrere, den gleichen Farbton emittierende Leuchtdioden vorgesehen sind.An advantageous development of this variant provides that several, the same color emitting light emitting diodes are provided.
Eine günstige Variante der Erfindung besteht darin, dass die gleicher Farbe Leuchtdioden parallel geschaltet sind.A cheap variant of the invention is that the same color light emitting diodes are connected in parallel.
Praxisbewährter Weise sind mehrere Schaltnetzteile vorgesehen, wobei den Leuchtdioden, die den selben Farbton emittieren, ein gemeinsames Schaltnetzteil zugeordnet ist.In practice, several switching power supplies are provided, with the light-emitting diodes, which emit the same color, a common switching power supply is assigned.
Eine sehr günstige Variante der Erfindung sieht vor, dass die Leuchtdioden in Form einer Matrix angeordnet sind.A very favorable variant of the invention provides that the light-emitting diodes are in the form of a Matrix are arranged.
Bevorzugter Weise sind die Leuchtdioden rot, grün und blau.The light-emitting diodes are preferably red, green and blue.
Die Erfindung samt weiteren Vorteilen ist in der Zeichnung anhand einiger nicht einschränkender
Ausführungsbeispiele dargestellt. In dieser zeigen schematisch:
Gemäß Fig. 1 weist eine erfindungsgemäße Beleuchtungsvorrichtung BEL für Leuchtdioden, die den selben Farbton emittieren, je ein gemeinsames Schaltnetzteil STN1, STN2, STN3 auf, dessen Ausgangsspannung UA1, UA2, UA3 bzw. Ausgangsstrom IA1, IA2, IA3 über eine Ansteuerung AST, beispielsweise einen entsprechend eingerichteten Computer, geregelt werden kann. Die Eingangsspannung UN des Schaltnetzteiles STN1-STN3 kann beispielsweise die Netzspannung sein.1, a lighting device BEL according to the invention for light-emitting diodes which emit the same color tone has a common switching power supply STN1, STN2, STN3, the output voltage U A1 , U A2 , U A3 and output current I A1 , I A2 , I A3 can be regulated via a control AST, for example a suitably equipped computer. The input voltage U N of the switching power supply STN1-STN3 can be, for example, the mains voltage.
Die Leuchtdioden Db, Dg, Dr werden in Durchlassrichtung betrieben, dabei steigt ihre Helligkeit mit ihrem Betriebsstrom an. Allerdings gibt es einen maximal zulässigen Strom, der nicht wesentlich überschritten werden darf, da es sonst zu einer Zerstörung der Leuchtdioden Db, Dg, Dr kommen kann. Je nach technologischer Ausführung der Leuchtdioden Db, Dg, Dr können der maximale Betriebsstrom und die maximale Betriebsspannung von Typ zu Typ wesentlich verschieden sein. Um den Betriebsstrom zu begrenzen ist jeder Leuchtdiode Db, Dg, Dr ein Vorwiderstand Rv in Serie vorgeschaltet. Über das Schaltnetzteil kann die Ausgangsspannung UA1, UA2, UA3 und/oder der Ausgangsstrom, IA1, IA2, IA3 die der jeweiligen Speisesspannung bzw. dem jeweiligen Speisestrom der Leuchtdioden Db, Dg, Dr proportional sind und somit die Helligkeit/Intensität der Leuchtdioden Db, Dg, Dr reguliert werden. Es hat sich herausgestellt, dass sich eine besonders große spektrale Bandbreite der Farbtemperatur einstellen lässt wenn die verwendeten Leuchtdioden Db, Dg, Dr die Farben rot, grün und blau aufweisen. Die Leuchtdioden Db, Dg, Dr, die einer Farbe zugeordnet sind, können dabei zu Blöcken zusammengefasst werden.The LEDs D b , D g , D r are operated in the forward direction, their brightness increases with their operating current. However, there is a maximum permissible current which must not be significantly exceeded, since otherwise the LEDs D b , D g , D r can be destroyed. Depending on the technological design of the light emitting diodes D b , D g , D r , the maximum operating current and the maximum operating voltage can differ significantly from type to type. In order to limit the operating current, a series resistor Rv is connected upstream of each light-emitting diode D b , D g , D r . Via the switching power supply, the output voltage U A1 , U A2 , U A3 and / or the output current, I A1 , I A2 , I A3 can be proportional to the respective supply voltage or the respective supply current of the light-emitting diodes D b , D g , D r and thus the brightness / intensity of the light emitting diodes D b , D g , D r can be regulated. It has been found that a particularly large spectral bandwidth of the color temperature can be set if the light-emitting diodes D b , D g , D r used have the colors red, green and blue. The light-emitting diodes D b , D g , D r , which are assigned to a color, can be combined to form blocks.
Eine weitere Möglichkeit die Farbtemperatur und die Helligkeit der Beleuchtungsvorrichtung zu verändern, ist die Kombination der oben beschriebenen Speisespannungs/-strom-Einstellung mit einer Pulsbreitenmodulation. Durch die Spannungs-/Stromänderung lässt sich eine Änderung der Farbtemperatur und der Helligkeit (Intensität) des von der Beleuchtungsvorrichtung emittierten Lichtes erzielen. Durch eine Pulsbreitenmodulation wird eine Helligkeitsreduktion bei konstanter Farbtemperatur ermöglicht. Da die Durchführung einer Pulsbreitenmodulation einem Fachmann wohl bekannt ist, soll an dieser Stelle nicht näher darauf eingegangen werden.Another possibility is the color temperature and the brightness of the lighting device to be changed is the combination of the supply voltage / current setting described above with pulse width modulation. By changing the voltage / current there is a change in color temperature and brightness (intensity) from the lighting device achieve emitted light. With pulse width modulation, a Brightness reduction with constant color temperature enabled. Because performing one Pulse width modulation, which is well known to a person skilled in the art, should not be described in more detail here be dealt with.
Ausgangspunkt für die Wahrnehmung der Farbtemperatur sind die ihr zugrundeliegenden physikalischen Farbreize, also diejenigen elektromagnetischen Strahlungen im Bereich zwischen 380 und 780 nm, die in das Auge gelangen und dort spezielle Sinneszellen erregen, so dass eine Farbempfindung entsteht. Ein Farbreiz kann auch als Punkt in einem unendlichdimensionalen Raum aufgefasst werden, in dem jede Achse die Intensität einer bestimmten Wellenlänge (beispielsweise in Photonen pro Sekunde) darstellt. Da sich unendlichdimensionale Räume nur schwer darstellen lassen, werden Farbreize meist durch ihre spektrale Strahlungsverteilung charakterisiert, die angibt, wie sich die Strahlungsleistung auf die einzelnen Regionen des Spektrums verteilt. The starting point for the perception of the color temperature are those on which it is based physical color stimuli, i.e. those electromagnetic radiation in the area between 380 and 780 nm, which get into the eye and excite special sensory cells there, so that a color sensation arises. A color stimulus can also be used as a point in an infinite-dimensional Space in which each axis is the intensity of a particular one Represents wavelength (for example in photons per second). Because there are infinite dimensions Spaces are difficult to display, color stimuli are mostly due to their characterized spectral radiation distribution, which indicates how the radiation power is based the individual regions of the spectrum distributed.
Spezielle Rezeptoren auf der Retina des Auges absorbieren einen Teil der Farbreize, wodurch eine chemische Reaktion ausgelöst wird, die im Zerfall von verschiedenen Arten von Sehpurpur besteht und die anschließend in eine Nervenerregung umgesetzt wird. Dabei bilden ein achromatischer und drei chromatische Mechanismen unterschiedlich gewichtete Summen der Intensitäten bei den verschiedenen Wellenlängen, wobei nicht die gesamte Information über die Intensitäten für alle Wellenlängen erhalten bleibt.Special receptors on the retina of the eye absorb some of the color stimuli, causing a chemical reaction is triggered that occurs in the decay of different types of Sehpurpur exists and which is then converted into a nervous excitement. there form an achromatic and three chromatic mechanisms with different weights Sum of the intensities at the different wavelengths, but not the whole Information about the intensities for all wavelengths is retained.
Durch Mischung der von den Leuchtdioden erzeugten Farbtöne und Intensitäten lässt sich eine vorgebbare Farbtemperatur einstellen. Durch selektives Hinzu- oder Wegschalten von Leuchtdioden Db, Dg, Dr einer Farbe bzw. durch Änderung der Helligkeit/Intensität kann die von einer Person wahrgenommene Farbtemperatur geändert werden.A predeterminable color temperature can be set by mixing the colors and intensities generated by the light-emitting diodes. The color temperature perceived by a person can be changed by selectively switching on or off LEDs D b , D g , D r of a color or by changing the brightness / intensity.
Nach Fig. 2 ist für alle Leuchtdioden Db, Dg, Dr ein gemeinsames Schaltnetzteil SNT4 vorgesehen, welches zur Steuerung der Farbtemperatur getrennt regelbare Ausgänge aufweist, die den Leuchtdioden Db, Dg, Dr einer Farbe zugeordnet sind, wie es in dargestellt ist. Als steuerbares Schaltnetzteil SNT4 kann beispielsweise ein Mehrkanal-Dimmer verwendet werden. Natürlich können die Leuchtdioden Db, Dg, Dr auch einzeln angesteuert werden, wobei für jede Leuchtdiode Db, Dg, Dr ein Schaltnetzteil SNT4 vorgesehen sein kann.According to FIG. 2, a common switched-mode power supply SNT4 is provided for all light-emitting diodes D b , D g , D r , which has separately controllable outputs for controlling the color temperature, which outputs are assigned a color to the light-emitting diodes D b , D g , D r is shown in. A multi-channel dimmer, for example, can be used as the controllable switching power supply SNT4. Of course, the light emitting diodes D b , D g , D r can also be controlled individually, it being possible for a switching power supply SNT4 to be provided for each light emitting diode D b , D g , D r .
Die Beleuchtungsvorrichtung BEL nach Fig. 3 weist ein Beleuchtungsfeld FEL auf, über welches die Leuchtdioden Db, Dg, Dr in Form einer Matrix MAT angeordnet sind. Diese Beleuchtungsvorrichtung BEL eignet sich besonders als Tisch- oder Schminkbeleuchtung. Auch hier ist den Leuchtdioden Db, Dg, Dr, ein gemeinsames Schaltnetzteil SNT4 zugeordnet. Die Anordnung von Leuchtdioden Db, Dg, Dr unterschiedlicher Farben kann beliebig erfolgen. So können beispielsweise Leuchtdioden Db, Dg, Dr einer Farbe eine Zeile und/oder Spalte der Matrix MAT bilden. Eine andere Möglichkeit besteht darin, die Leuchtdioden Db, Dg, Dr so anzuordnen, dass eine Leuchtdiode Db, Dg, Dr einer Farbe von andersfarbigen Leuchtdioden Db, Dg, Dr umgeben ist.The lighting device BEL according to FIG. 3 has an illumination field FEL, via which the light-emitting diodes D b , D g , D r are arranged in the form of a matrix MAT. This lighting device BEL is particularly suitable as table or make-up lighting. A common switching power supply SNT4 is also assigned to the light-emitting diodes D b , D g , D r here. The arrangement of light-emitting diodes D b , D g , D r of different colors can be made as desired. For example, light emitting diodes D b , D g , D r of one color can form a row and / or column of the matrix MAT. Another possibility is to arrange the light-emitting diodes D b , D g , D r in such a way that a light-emitting diode D b , D g , D r of one color is surrounded by different-colored light-emitting diodes D b , D g , D r .
Das farbliche Aussehen eines Reizes hängt sehr stark von den Beobachtungsbedingungen ab. Einen wichtigen Faktor stellen dabei Kontexteffekte dar, die in dem Einfluss eines farbigen Umfeldes auf die Farbe des Reizes bestehen. Mit Hilfe der Beleuchtungsvorrichtung BEL können solche Kontexteffekte antizipiert werden, was beispielsweise bei einer Anwendung als Schminklicht von großem Vorteil ist, da das Licht den Bedingungen angepasst werden kann unter denen die Schminke am besten zur Geltung kommen soll.The color appearance of a stimulus depends very much on the observation conditions. An important factor here are context effects that are influenced by a colored Insist on the color of the stimulus. With the help of the lighting device BEL such context effects can be anticipated, for example in an application as a make-up light is of great advantage because the light can be adapted to the conditions under which the make-up should come into its own.
Auch als Tischbeleuchtung für einen Arbeitsplatz lässt sich die Beleuchtungsvorrichtung BEL mit großem Gewinn einsetzten. Ermüdungserscheinungen kann durch Veränderung der Farbtemperatur vorgebeugt werden. Auch können gemäß den Ergebnissen der experimentellen Psychologie Gemütsverfassungen durch die Farbtemperatur der Beleuchtung beeinflusst werden. Weshalb sich die Beleuchtungsvorrichtung BEL auch für den therapeutischen Einsatz sehr gut eignet.The lighting device can also be used as table lighting for a workplace Use BEL with a big win. Fatigue can be caused by change the color temperature can be prevented. Also, according to the results of the experimental Psychology moods by the color temperature of the lighting to be influenced. Which is why the lighting device BEL is also suitable for therapeutic Use very well.
Die erfindungsgemäße Beleuchtungsvorrichtung BEL erlaubt es, durch die Verwendung von Licht unterschiedlicher Farben emittierender Leuchtdioden Db, Dg, Dr die Farbtemperatur innerhalb einer großen spektralen Bandbreite zu verändern. Es ist ein weiteres Verdienst der Erfindung, eine Beleuchtungsvorrichtung BEL zu schaffen, die eine im wesentlichen freie Formgebung ermöglicht. Mit der Beleuchtungsvorrichtung BEL nach der Erfindung können praktisch alle Arten von Beleuchtungen realisiert werden (Raumbeleuchtung, Tischbeleuchtung, etc.).The lighting device BEL according to the invention makes it possible to change the color temperature within a wide spectral range by using light emitting light-emitting diodes D b , D g , D r . It is a further merit of the invention to provide a lighting device BEL which enables an essentially free shaping. With the lighting device BEL according to the invention, practically all types of lighting can be realized (room lighting, table lighting, etc.).
Claims (13)
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AT9422000 | 2000-12-21 | ||
AT9422000U | 2000-12-21 |
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EP1220578A2 true EP1220578A2 (en) | 2002-07-03 |
EP1220578A3 EP1220578A3 (en) | 2004-11-17 |
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Application Number | Title | Priority Date | Filing Date |
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EP01890346A Withdrawn EP1220578A3 (en) | 2000-12-21 | 2001-12-20 | Process and device for changing the colour temperature |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1487243A1 (en) * | 2003-06-06 | 2004-12-15 | Teknoware Oy | Controlling colour temperature of lighting fixture |
DE10349553A1 (en) * | 2003-06-25 | 2005-01-20 | Public Screen & Lightsystems Ag | LED brightness regulation method for regulating the brightness of one or more LEDs, where a brightness range is defined by the amplitude of controlling current pulses, while a given brightness is defined by the pulse frequency |
DE102007052854A1 (en) | 2007-11-06 | 2009-05-07 | Münchner Hybrid Systemtechnik GmbH | LED lamp's light emission controlling method, involves selecting color temperature based on luminance reference value, and controlling LEDs for adjusting selected color temperature with respect to desired luminance of LED lamp |
DE102008013049A1 (en) * | 2008-03-06 | 2009-09-24 | Mbb International Group Ag | Luminaire, in particular for achieving a daylight-like light spectrum |
DE102008013048A1 (en) * | 2008-03-06 | 2009-09-24 | Mbb International Group Ag | Luminaire, in particular for achieving a daylight-like luminous spectrum |
DE102010000672A1 (en) * | 2010-01-05 | 2011-07-07 | Tridonic Ag | Combined method for operating an electrical lamp and operating circuit |
DE102012211828B4 (en) | 2012-07-06 | 2023-03-02 | Lisa Dräxlmaier GmbH | LED lighting for vehicles |
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US6016038A (en) * | 1997-08-26 | 2000-01-18 | Color Kinetics, Inc. | Multicolored LED lighting method and apparatus |
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US5895128A (en) * | 1997-01-21 | 1999-04-20 | Minolta Co., Ltd. | Electronic flash and a camera provided with the same |
US6016038A (en) * | 1997-08-26 | 2000-01-18 | Color Kinetics, Inc. | Multicolored LED lighting method and apparatus |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1487243A1 (en) * | 2003-06-06 | 2004-12-15 | Teknoware Oy | Controlling colour temperature of lighting fixture |
US7352137B2 (en) | 2003-06-06 | 2008-04-01 | Teknoware Oy | Controlling color temperature of lighting fixture |
DE10349553A1 (en) * | 2003-06-25 | 2005-01-20 | Public Screen & Lightsystems Ag | LED brightness regulation method for regulating the brightness of one or more LEDs, where a brightness range is defined by the amplitude of controlling current pulses, while a given brightness is defined by the pulse frequency |
DE10349553B4 (en) * | 2003-06-25 | 2007-04-19 | Digitallicht Ag | Method and light network for brightness control and dynamic color mixing of LED units |
DE102007052854A1 (en) | 2007-11-06 | 2009-05-07 | Münchner Hybrid Systemtechnik GmbH | LED lamp's light emission controlling method, involves selecting color temperature based on luminance reference value, and controlling LEDs for adjusting selected color temperature with respect to desired luminance of LED lamp |
DE102008013049A1 (en) * | 2008-03-06 | 2009-09-24 | Mbb International Group Ag | Luminaire, in particular for achieving a daylight-like light spectrum |
DE102008013048A1 (en) * | 2008-03-06 | 2009-09-24 | Mbb International Group Ag | Luminaire, in particular for achieving a daylight-like luminous spectrum |
DE102010000672A1 (en) * | 2010-01-05 | 2011-07-07 | Tridonic Ag | Combined method for operating an electrical lamp and operating circuit |
DE102012211828B4 (en) | 2012-07-06 | 2023-03-02 | Lisa Dräxlmaier GmbH | LED lighting for vehicles |
Also Published As
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