EP2005799B1 - Commande de la temperature de couleur et de la localisation chromatique d'une lampe - Google Patents

Commande de la temperature de couleur et de la localisation chromatique d'une lampe Download PDF

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Publication number
EP2005799B1
EP2005799B1 EP07723821.0A EP07723821A EP2005799B1 EP 2005799 B1 EP2005799 B1 EP 2005799B1 EP 07723821 A EP07723821 A EP 07723821A EP 2005799 B1 EP2005799 B1 EP 2005799B1
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Prior art keywords
colour
color
luminaire
distance
light
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EP07723821.0A
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German (de)
English (en)
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EP2005799A1 (fr
Inventor
Günther SEJKORA
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ZUMTOBEL LIGHTING GmbH
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Zumtobel Lighting GmbH Austria
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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 present invention relates to a method for providing control signals for a variable in their color or color temperature lamp. Moreover, the invention relates to a corresponding control device and a corresponding illumination system.
  • a light source generally emits light that is not monochromatic, but has a more or less broad wavelength spectrum. Therefore, in general, the color of this light can not or insufficiently described by specifying only one wavelength.
  • One way to at least approximately comparatively simply specify the color of the light is to specify the temperature of a black body that this black body would have to shine in a color that is equal to the color of the light source to be described, or at least that color comes as close as possible.
  • This temperature is commonly referred to as “color temperature” or “most similar color temperature”.
  • Fig. 2 is very schematic and simplified (notably as a black-and-white representation) the mentioned standard color chart according to CIE, 1931 is shown.
  • the coordinates are usually denoted by x and y .
  • a point (x, y) in the diagram thus indicates a color location that has a specific color features.
  • the monochromatic colors lie along an approximately horseshoe-shaped edge region, the spectral line.
  • the corresponding values of the associated wavelengths are entered in the unit nanometer (nm).
  • lamps are known from the prior art, with which - regardless of the color temperature - light can be radiated in different colors.
  • these lights have three different light sources, with each of which light of a particular color can be generated.
  • the brightness of the three light sources are independently adjustable, so that it is possible to produce a corresponding mixture. In this way, light can be produced in different colors with the lamp.
  • the three colors of the three light sources in the standard color chart (cf. Fig. 2 ) are given as three color loci spanning a triangle in the underlying coordinate system.
  • a control device for providing control signals for a color-changeable illumination device with which pre-defined, equidistant colors can be set.
  • the present invention has for its object to provide a control of a lamp, and a corresponding control device and a corresponding illumination system, with or with which the setting is facilitated to a certain desired light impression.
  • a method for providing control signals for a luminaire which can emit light of different colors.
  • the method has the following steps a1), a2) and b): a1) input of input variables into an input unit of an inventive device A control device (see below), wherein the input quantities are two mutually different color loci, and wherein the first color locus identifies a first color and the second color locus identifies a second color that differs from the first color. a2) Depending on the first color locus and the second color locus - taking into account the following two conditions i) and ii) - a color locus to be determined which identifies a further color is determined.
  • the first condition i) is: The color locus to be determined lies in an equidistant coordinate system representing the color loci together with the first and the second color loci at least approximately on a predefined color change curve.
  • the second condition ii) is: The color difference between the first and the second color or an integer multiple of this color difference is at least approximately equal to the color difference between the first and the further color or between the second and the further color.
  • the method comprises the following step: b) On the basis of the determined color locus, a control signal is generated, which causes the luminaire to emit light in the additional color corresponding to the determined color location.
  • color difference denotes a subjectively perceived difference between two colors, in particular between a first color of a first light and a second color of a second light. Since color perception, as mentioned, is subject to an individual assessment, it is difficult or ultimately impossible to give an "exact” objective measure of the perception of a difference between two colors. In the present context, therefore, “color difference” denotes the subjectively perceived difference between two colors, which results on the basis of a "standard color vision", as can be determined, for example, with the aid of a normal observer.
  • the "color change curve” is, so to say, a path in the corresponding coordinate system, which generally does not necessarily have to represent a curve in the mathematical sense. Rather, it is a given curved or rectilinear line in the coordinate system.
  • a method for providing control signals for a luminaire which can emit light of different colors.
  • the method comprises the following steps a1), a2) and b): a1) input of input variables into a control unit of a device according to the invention Control device (see below), wherein the input quantities are a color locus and a color space, and wherein this color locus denotes a first color, a2) Depending on the color locus and the color space
  • Color difference is determined - taking into account the following two conditions i) and ii) - a color locus to be determined, which identifies a further color.
  • the first condition i) is: The color locus to be determined lies at least approximately on a predefined color change curve in an equidistant coordinate system representing the color loci together with the predefined color locus.
  • the second condition ii) is: The color difference between the first and the further color is at least approximately equal to the predetermined color spacing or an integral multiple thereof.
  • the method further comprises the following step b): On the basis of the determined color locus, a control signal is generated, which causes the luminaire to emit light in the further color corresponding to the determined color locus.
  • the given color change curve may be the Planckian curve.
  • the luminaire preferably comprises three luminous means, preferably LEDs or fluorescent lamps, which can shine in different colors.
  • the three colors can be colors whose corresponding color locations in the coordinate system span a triangle, which encloses the white point, for example, in the case of the standard color chart 1931 or a corresponding coordinate system.
  • the color change curve runs through the white point or through a "white area";"Whitearea” is intended to denote a (small) environment around the white point, in which, again based on a standard color vision, the impression of "white” outweighs the impression of color.
  • a color change curve can be provided which - apart from a Direction change in the "white area" - straight.
  • a lamp can be controlled such that it emits light in a first color, this color in uniform steps more and more white and finally in a further uniform steps in a basically any other, second Color passes over.
  • the given color change curve may be a straight line.
  • the lamp advantageously has at least two lamps, preferably LEDs or fluorescent lamps, which can shine in different colors.
  • basically (only) two bulbs are required, provided that the color change curve is chosen such that these two bulbs can shine in two colors whose corresponding color loci are on the color change curve.
  • a series of at least three color loci is defined for whose three corresponding colors there is at least approximately an equal color difference between every two adjacent colors according to the color change curve.
  • a temporal control of the lamp is made such that the at least approximately equal color distances are traversed in each case in at least approximately the same time intervals.
  • the adjustability is further facilitated.
  • the coordinate system chosen is a coordinate system in which a geometric distance between two color loci represents at least approximately a measure of a specific color distance, for example a so-called "equidistant" color system.
  • a geometric distance between two color loci represents at least approximately a measure of a specific color distance
  • a so-called "equidistant” color system for example, for this purpose, the representation of the "CIE 1976 color chart" can be selected as the coordinate system.
  • a control device for providing control signals for a luminaire which can emit light of different colors.
  • the control device comprises a) an input unit for input of input quantities, wherein the input quantities are either two mutually different color loci or a color locus and a color separation, and b) a calculation unit for determining a series of at least three color loci identifying three different colors, depending on the input quantities, wherein the color loci are selected so that they are at least approximately on a predetermined color change curve in a latter representing the same coordinate system, and in each case at least approximately equal color distances are present between each two adjacent colors according to the color change curve, and for determining control signals for the lamp, with the aid of which the lamp can be caused to emit light in the at least three colors (ie, is meant for the emission of a first light of the first color, a second light second color and a third light of third color, these three "lights" do not overlap in time).
  • the control device c) comprises a transmission unit for
  • the calculation unit is advantageously designed to use a method according to the invention as part of the determination of the control signals.
  • a lighting system which has a control device according to the invention and a light which can emit light in different colors, the control device being connected to the light.
  • a method for providing control signals for a luminaire, with which light of different color temperature can be generated.
  • the method has the following steps: a1) Input of input variables into one Input unit of a control device according to the invention (see below), wherein the input quantities are two mutually different color temperature values and wherein the first color temperature value corresponds to a first color and the second color temperature value corresponds to a second color different from the first color; a2) determining a color temperature setpoint corresponding to a further color as a function of the two color temperature values, wherein the color temperature setpoint is selected such that the color difference between the first and the second color or an integer multiple thereof Color distance is at least approximately equal to the color difference between the first and the other or between the second and the other color.
  • a control signal is generated, which causes the lamp to emit light in the color temperature setpoint corresponding color.
  • a color temperature setpoint is established as a function of two different predetermined color temperature values, in short color temperatures.
  • this method it is possible to set different types of light with one lamp, the types of light each differing in their color temperature, in such a way that the differences between the types of light are perceived as equidistant or at least approximately equidistant with respect to their color.
  • Each step thus corresponds to a specific color difference, each of equal size, and thus an equal difference between the impressions which the two corresponding types of light produce in a viewer.
  • the invention according to this aspect uses the knowledge that a certain difference between two different color temperatures does not represent a measure of the associated difference in the light impression. A suitable measure of this is rather the so-called color difference of the light.
  • a method for providing control signals for a luminaire, with which light of different color temperature can be generated.
  • the method comprises the steps of: a1) inputting input quantities to an input unit of a control device according to the invention (see below), wherein the input quantities are a color temperature value and a color space and wherein the color temperature value corresponds to a first color; a2) Determining a color temperature setpoint as a function of the color temperature value and the color distance, wherein the color temperature setpoint is selected such that the color difference between the first color and the other
  • Color is at least approximately equal to the predetermined color difference or an integer multiple of the predetermined color distance.
  • the lamp comprises three bulbs that can shine in different colors.
  • the three colors can be three colors which result in white in a composition or mixture.
  • it can be red, green, and blue.
  • the three bulbs LEDs or fluorescent lamps are advantageousously, the three bulbs LEDs or fluorescent lamps.
  • a series of at least three color temperature values is determined, for which three corresponding colors it is true that there is at least approximately an equal color difference between each two neighboring colors.
  • corresponding color is meant in this context that color in which a blackbody with the corresponding temperature lights.
  • a colorimetry can be used, which is based on a defined "standard color vision”.
  • the respective color loci in the standard color chart can be calculated. Inserting these color locations in the x - y diagram of the standard color chart results in the so-called Planckian curve. This is in the representation of Fig. 2 schematically drawn. In some cases, the respective color temperature values are entered here. By “neighboring" colors is meant to be expressed that these colors are adjacent to the Planckian curve.
  • the color temperature setpoint value is determined as a function of two predefined color temperature values T 1 and T 2 with T 2 > T 1 , then, for example, a series of three color temperature values can be defined, wherein the two predefined color temperature values represent the first two values of this series and determined color temperature setpoint TS the third value T 3 of the series.
  • the color temperature setpoint TS can be determined either by choosing the color difference between TS and T 2 equal to the color difference corresponding to the color difference between T 1 and T 2 or by the color difference between TS and T 1 equal to twice the value of this color difference.
  • both the gradation accuracy as well as the total adjustable range can in principle be defined as precisely as desired.
  • a color coordinate system is used in which a geometric distance between two color loci represents at least approximately a measure of a specific color distance value or short color distance.
  • a color coordinate system based on a "standard color vision" can be selected for this purpose.
  • Such a color system is referred to herein as "equidistant”.
  • the diagram of the CIE 1976 color chart is advantageously used as the color coordinate system.
  • control signals can then be formed in a known manner in a further step with which the luminaire can be controlled in such a way that it emits light of the respectively corresponding color temperature.
  • a control apparatus for providing control signals to a luminaire capable of producing light of different color temperature, comprising: an input unit for input of input quantities wherein the input quantities are either two mutually different color temperature values or a color temperature value; a color difference value, a calculation unit for determining a series of at least three color temperature values as a function of the input variables, wherein the color temperature values are selected such that they correspond to three colors such that there is at least approximately equal color spacing between each two neighboring colors, and for determining control signals for the luminaire, with the aid of which the luminaire can be caused to emit light with the at least three color temperature values, as well as a transmission unit for transmitting mediation of the control signals to the light.
  • the calculation unit of the control device is designed to use a method according to the invention within the scope of determining the control signals.
  • a lighting system comprising: a control device according to the invention and a luminaire with which light of different color temperature can be generated, the control device being connected to the luminaire.
  • the present invention relates in accordance with a first embodiment, the control of a lamp, with the light of different color temperature can be generated.
  • Fig. 1 is very schematically sketched an example of a lighting system according to the invention, which is suitable for carrying out the method according to the first embodiment.
  • the lighting system comprises a control unit 2 with a control device, a control line 4 and at least one lamp operating device 5 with three light sources 6, 7, 8, which form part of a luminaire 9.
  • the bulbs 6, 7, 8 are designed to generate light in conjunction with each other with a specific color temperature.
  • the light source 6, 7, 8 for example, three light emitting diodes (LEDs) can be used, each of the LEDs can emit light of a different color, so that white light of a given color temperature is produced by suitable Southsatzung. For example, red, blue and green can be selected as colors for this purpose.
  • control signals can be generated, with which the lamp 9 can be controlled such that it generates light of a specific color temperature.
  • the control device of the control unit 2 comprises an input unit for input of input quantities 1.
  • the input quantities 1 may in particular be color temperature values T 1 , T 2 and / or a color distance value or short color difference d .
  • the control device comprises a calculation unit with which a series of at least three color temperature values T 1 , T 2 , T 3 can be calculated. This calculation will be discussed in more detail below.
  • the calculation unit is designed to determine as output variables control signals which are suitable for driving the at least one luminaire 9 in such a way that it generates light with the at least three color temperature values T 1 , T 2 , T 3 .
  • the control device comprises a transmission unit for transmitting the control signals to the luminaire 9.
  • two or more such lights 9 may be provided for the lighting system.
  • the control signals are used in a conventional manner to control the at least one lamp 9.
  • the control line 4 can be part of a bus system, for example, the DALI technology can be used (DALI: Digital Addressable Lighting Interface).
  • the corresponding setting value for the luminaire 9 or the three luminous means 6, 7, 8 is generated from the digital signal, which represents a specific color temperature value.
  • the color impression is determined, which is caused in the case of a person of normal color vision when viewing the visible portion of the radiation with the intensity distribution I 1 ( ⁇ ).
  • This color chart is a color chart in which color distances correspond at least approximately to the geometric distances between the corresponding color locations in the color chart. More generally, the CIE 1976 color chart is an "equidistant" chromaticity chart, also called the CIE UCS color chart (UCS: Uniform Chromaticity-Scale Diagram, CIE 1976).
  • the CIE 1976 color chart is not the only possible equidistant color chart or colorimetric. In principle, any other equidistant color representation can be used analogously in the context of the invention. In the exemplary embodiment given here, therefore, the CIE 1976 color chart is selected purely by way of example for this purpose.
  • a first color locus (u ' 1 , v' 1 ) of the CIE 1976 color chart is calculated, which describes the color of the black body radiation at the temperature T 1 and, analogously, a second color locus (u ' 2 , v' 2 ) for the temperature T 2 .
  • the coordinates u ' and v' can be expressed as functions of the temperature T ; also the function v ' ( u' ) can be formed, which results if one specifies a set of color temperature values for T. In this way you get the Plank curve, here for the CIE 1976 color chart.
  • one of the two color loci ie, for example, the second color locus ( u ' 2 , v' 2 ) is assumed and a third color locus (u ' 3 , v' 3 ) is calculated, for which it is valid from the second color locus (u ' 2 , v' 2 ) has the color difference d and likewise lies on the Planckian curve, but differs in the corresponding color temperature value T 3 from the color temperature value T 1 corresponding to the first color location (u ' 1 , v' 1 ) corresponds. Due to the quadratic relationship, such a color locus is generally found on the Plank curve.
  • the associated color temperature which is referred to below as T 3
  • T 3 the associated color temperature
  • the color temperature value T 3 can thus be referred to as the "color temperature setpoint" TS to be determined.
  • control signals are then formed in a manner known per se which can serve to activate the luminaire 9 in such a way that it produces light with the color temperature values mentioned.
  • a series of four or even more color temperature values can also be calculated, so that in general any desired range or interval of color temperatures and an arbitrarily accurate graduation can be achieved.
  • An example of such a series of seven temperatures T 1 , T 2 , T 3 ... T 7 is the color temperature series: 2500 K, 2700 K, 3000 K, 3400 K, 4000 K, 4900 K, 6500 K.
  • a second color location u ' 2 , v' 2 ) which determines the color distance d from the first color location ( u ' 1 , v ' 1 ).
  • the associated color temperature T 2 can then be calculated, again in accordance with the relationships described above.
  • a further color temperature value T 3 can now be determined whose distance from T 2 in turn corresponds to the color distance d , etc.
  • a sequence of n color locations (u ' 1 , v'1) , (u' 2 , v ' 2 ), ... (u' n , v ' n ) are determined, for which applies that the perceived color difference, ie the color difference d between two successive or adjacent color locations is the same size, namely the Value d corresponds.
  • this sequence can be assigned a series of color temperature values T 1 , T 2 , ... T n , for which therefore their corresponding colors each have an equal size Have color difference d
  • the invention according to the above-described first embodiment is made possible for a luminaire, with which light of different color temperatures can be generated to provide a step-like adjustability, in such a way that with an adjustment between the individual stages of the impression that the light Observer conveys, each at least approximately uniform, ie proportional to the levels changed.
  • the adjustability significantly easier and faster, so be made more comfortable.
  • the second embodiment of the present invention relates to the driving of a lamp 9, which can emit light in different colors.
  • the illumination system with which a method according to the second embodiment can be carried out corresponds - unless otherwise stated below - the in Fig. 1 system shown, wherein the three bulbs 6, 7, 8 can generate light in three different colors.
  • light with a color can be generated in this case with the light 9, which is marked or represented within a triangle by a color locus in a corresponding coordinate system, in particular color diagram, whereby the triangle is spanned by those three color loci that correspond to the colors of the three light sources 6, 7, 8.
  • control unit 2 so control signals can be generated with which the lamp 9 can be controlled such that it generates light of a particular color, which can be characterized by a specific color location in a color chart.
  • the input variables 1 can now be, in particular, color loci F 1 , F 2 and / or a color difference d .
  • the control device comprises a calculation unit with which a series of at least three color locations F 1 , F 2 , F 3 can be calculated.
  • the calculation unit is designed to determine as output variables control signals which are suitable for controlling at least one luminaire 9 such that it generates light in three different colors that correspond to the three different color loci F 1 , F 2 , F 3 .
  • Fig. 4 schematically drawn in, as well as in Fig. 3 , a simplified illustration of the CIE 1976 color chart is sketched.
  • the two color loci F A and F E are located within a color triangle D , which has three color loci as corner points, which correspond to the three colors of the three luminous means 6, 7, 8.
  • these three vertices are merely sketched in principle and do not necessarily correspond to color locations, for whose corresponding colors in each case a corresponding lighting means actually exists.
  • the color change curve K1 is selected as a straight line according to this embodiment. Therefore, depending on the location of the color loci F A and F E, the color change curve K1 can be specified in each case either as v 'as a function of u' and / or as u ' as a function of v ' in the mathematical sense. The corresponding mathematical function then allows a clear description of all color locations that lie on K1 .
  • F A or F E can be selected as F I.
  • F x - a - generally formulated "further" color location F x - is determined here as the "third" color location F 3 .
  • the first condition is that the third color locus F 3 lies on the color change curve K1 .
  • the second condition is that the color difference d between F 1 and F 2 is equal to the color difference between F 2 and F 3 .
  • a series of three color loci is determined, for which three corresponding colors, that between each two adjacent according to the color change curve K1 colors at least approximately equal in color distance d is present.
  • Fig. 4 drawn a case in which five color locations F 1 to F 5 is formed , each with the same color spacing d as a series of color locations.
  • a series (F;) of i color locations with i ⁇ N can be formed.
  • this series of color loci can again be determined on the basis of (only) a predefined color locus (for example F 1 ) and a predetermined color spacing d .
  • the color change curve can basically take any shape. In particular, it is therefore also possible to choose a line which has at least one curved or "bent" one. Section has. For the calculation, it holds true that in this case as well, depending on the location of the color loci F A and F E, the color change curve is given sufficient accuracy in the mathematical sense by a function v '(u') or u '(v') , or, if necessary, can be described by a function composed in sections of the last two functions.
  • the color change curve comprises two respective rectilinear portions which enclose a non-zero angle and which are connected to each other at one end.
  • the connection point lies in the white point or in the "white area" (as defined above).
  • the respective other end points of the two sections that is to say using the above terminology the end points F A and F E , lie at two color locations, each one identify specific color.
  • a straight line is again selected as the color change curve, but that connects two color locations whose corresponding colors can be formed by light in each case of a luminous means.
  • these two color loci are labeled FL 1 and FL 2
  • the corresponding color change curve is K2 .
  • the calculation method corresponds again to the last-mentioned embodiment.
  • a luminaire 9 can be provided which has only two illuminants which can illuminate in colors corresponding to the color loci FL 1 and FL 2 .
  • the first illuminant may, for example, be an LED which emits light of wavelength 480 nm
  • the second illuminant may be an LED which emits light of wavelength 600 nm.
  • a preferred option with regard to the timing of the luminaire 9 is that the color loci F 1 , F 2 , F 3 ... of the series ⁇ F i > are traversed in at least approximately equal time intervals. This makes it possible to generate or pass through the corresponding light row with only one operating movement for operating the control unit. In this case, it is unnecessary to initiate each individual color step individually. This makes the control even more comfortable. It is also advantageous in this case when the control unit is designed such that also the time interval between the individual color levels can be specified.

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Claims (21)

  1. Dispositif de commande pour la mise à disposition de signaux de commande pour une lampe (9), laquelle peut émettre de la lumière de différentes couleurs, comprenant :
    a) une unité de saisie pour la saisie de grandeurs d'entrée (1),
    les grandeurs d'entrée (1) étant soit deux localisations chromatiques (F1, F2) différentes l'une de l'autre, soit une localisation chromatique (F1) et un écart chromatique (d),
    b) une unité de calcul
    - pour déterminer une série d'au moins trois localisations chromatiques (F1, F2, F3) qui caractérisent trois couleurs différentes en fonction des grandeurs d'entrée (1), les localisations chromatiques (F1, F2, F3) étant choisies de manière à ce que, dans un système de coordonnées représentant ces dernières avec équidistance, elles se situent au moins approximativement sur une courbe de variation chromatique (K1, K2) prédéterminée et à ce que, entre respectivement deux couleurs voisines selon la courbe de variation chromatique (K1, K2), il y a respectivement des écarts chromatiques (d) au moins approximativement d'une même importance, et
    - pour déterminer des signaux de commande pour la lampe (9), à l'aide desquels il est possible de faire en sorte que la lampe (9) émette de la lumière au moins dans les trois couleurs, ainsi que
    c) une unité de transmission (4, 5) pour la transmission des signaux de commande à la lampe (9).
  2. Système d'éclairage, présentant
    - un dispositif de commande selon la revendication 1 et
    - une lampe (9), laquelle peut émettre de la lumière de différentes couleurs, le dispositif de commande étant en liaison avec la lampe (9).
  3. Procédé pour la mise à disposition de signaux de commande pour une lampe (9), laquelle peut émettre de la lumière de différentes couleurs,
    présentant les étapes suivantes :
    a1) saisie de grandeurs d'entrée (1) dans une unité de saisie d'un dispositif de commande selon la revendication 1, les grandeurs d'entrée (1) étant deux localisations chromatiques (F1, F2) différentes l'une de l'autre, et la première localisation chromatique (F1) caractérisant une première couleur et la deuxième localisation chromatique (F2) caractérisant une deuxième couleur, laquelle diffère de la première couleur,
    a2) détermination, en fonction de la première localisation chromatique (F1) et de la deuxième localisation chromatique (F2) - en tenant compte des deux conditions suivantes i) et ii) - d'une localisation chromatique (FX) à déterminer, laquelle caractérise une autre couleur :
    i) la localisation chromatique à déterminer (Fx) se situe dans un système de coordonnées représentant les localisations chromatiques (F1, F2, F3) avec équidistance, ensemble avec la première et la deuxième localisation chromatique (F1, F2), au moins approximativement sur une courbe de variation chromatique (K1) prédéterminée, et
    ii) l'écart chromatique (d) entre la première et la deuxième couleur, ou un multiple entier de cet écart de couleur (d), est au moins approximativement égal à l'écart chromatique entre la première couleur et l'autre couleur ou entre la deuxième couleur et l'autre couleur, et
    b) sur la base de la localisation chromatique (Fx) déterminée, génération d'un signal de commande, lequel fait en sorte que la lampe (9) émette de la lumière de l'autre couleur correspondant à la localisation chromatique (Fx) déterminée.
  4. Procédé pour la mise à disposition de signaux de commande pour une lampe (9), laquelle peut émettre de la lumière de différentes couleurs, présentant les étapes suivantes :
    a1) saisie de grandeurs d'entrée (1) dans une unité de saisie d'un dispositif de commande selon la revendication 1, les grandeurs d'entrée (1) étant une localisation chromatique (F1) et un écart chromatique (d), et cette localisation chromatique (F1) caractérisant une première couleur,
    a2) en fonction de la localisation chromatique (F1) et de l'écart chromatique (d), détermination - en tenant compte des deux conditions i) et ii) suivantes - d'une localisation chromatique (Fx) à déterminer, laquelle caractérise une autre couleur :
    i) la localisation chromatique (Fx) à déterminer se situe dans un système de coordonnées représentant les localisations chromatiques (F1, FX) avec équidistance, ensemble avec la localisation chromatique (F1) prédéterminé, au moins approximativement sur une courbe de variation chromatique (K1) prédéterminé, et
    ii) l'écart chromatique entre la première couleur et l'autre couleur est au moins approximativement égal à l'écart chromatique (d) ou à un multiple entier de celui-ci, et
    b) sur la base de la localisation chromatique (Fx) déterminée, génération d'un signal de commande, lequel fait en sorte que la lampe (9) émette de la lumière de l'autre couleur correspondant à la localisation chromatique (Fx) déterminée.
  5. Procédé selon la revendication 3 ou 4,
    la courbe de variation chromatique prescrite étant le tracé de Planck.
  6. Procédé selon l'une des revendications 3 à 5,
    la lampe (9) comprenant trois moyens d'éclairage (6, 7, 8), de préférence des DEL ou des lampes fluorescentes, lesquelles peuvent rayonner avec différentes couleurs.
  7. Procédé selon la revendication 3 ou 4,
    la courbe de variation chromatique (K2) prédéterminé étant une droite.
  8. Procédé selon la revendication 7,
    la lampe (9) comprenant au moins deux moyens d'éclairage, de préférence des DEL ou des lampes fluorescentes, lesquelles peuvent rayonner avec des couleurs différentes.
  9. Procédé selon l'une des revendications 3 à 8,
    une série d'au moins trois localisations chromatiques (F1, F2, F3) étant déterminée dans une étape, pour les trois couleurs correspondantes desquelles il est entendu que, entre respectivement deux couleurs voisines conformément à la courbe de variation chromatique, il y a respectivement au moins approximativement un écart chromatique (d) de même importance.
  10. Procédé selon la revendication 9,
    une commande temporelle de la lampe (9) étant effectuée de manière à ce que les écarts chromatiques (d) au moins approximativement de même importance sont parcourus à intervalles de temps sensiblement égaux.
  11. Procédé selon l'une des revendications 3 à 10,
    un système de coordonnées étant choisi, en guise de système de coordonnées, dans lequel un écart géométrique entre deux localisations chromatiques représente au moins approximativement une mesure pour un écart chromatique (d) déterminé.
  12. Procédé selon l'une des revendications 3 à 11,
    la représentation du diagramme de chromaticité CIE 1976 étant choisie, en guise de système de coordonnées.
  13. Dispositif de commande pour la mise à disposition de signaux de commande pour une lampe (9) avec laquelle il est possible de produire de la lumière à température de couleur différente, comprenant :
    a) une unité de saisie pour la saisie de grandeurs d'entrée (1), les grandeurs d'entrée étant soit deux valeurs de température de couleur (T1, T2) différentes l'une de l'autre, soit une valeur de température de couleur (T1) et une valeur d'écart chromatique (d),
    b) une unité de calcul
    pour la détermination d'une série d'au moins trois valeurs de température de couleur (T1, T2, T3) en fonction des grandeurs d'entrée (1), les valeurs de température de couleur (T1, T2, T3) étant choisies de manière à correspondre à trois couleurs de manière à ce que, entre deux couleurs respectivement voisines, il y a respectivement des écarts chromatiques (d) au moins approximativement de même importance, et
    pour la détermination de signaux de commande pour la lampe (9), à l'aide desquels il est possible de faire en sorte que la lampe (9) émette de la lumière avec les au moins trois valeurs de température de couleur, ainsi que
    c) une unité de transmission (4, 5) pour la transmission des signaux de commande à la lampe (9).
  14. Système d'éclairage, comprenant
    - un dispositif de commande selon la revendication 13 et
    - une lampe (9) avec laquelle il est possible de produire de la lumière à température de couleur différente,
    le dispositif de commande étant en liaison avec la lampe (9).
  15. Procédé pour la mise à disposition de signaux de commande pour une lampe (9), avec laquelle il est possible de produire de la lumière à température de couleur différente, présentant les étapes suivantes :
    a1) saisie de grandeurs d'entrée (1) dans une unité de saisie d'un dispositif de commande selon la revendication 13, les grandeurs d'entrée (1) étant deux valeurs de température de couleur (T1, T2) différentes l'une de l'autre et la première valeur de température de couleur (T1) correspondant à une première couleur et la deuxième valeur de température de couleur (T2) correspondant à une deuxième couleur, laquelle diffère de la première couleur, et
    a2) détermination d'une valeur de consigne de température de couleur (TS), laquelle correspond à une autre couleur, en fonction des deux valeurs de température de couleur (T1, T2), la valeur de consigne de température de couleur (TS) étant choisie de manière à ce que l'écart chromatique (d) entre la première et la deuxième couleur, ou un multiple entier de cet écart chromatique (d), soit au moins approximativement identique à l'écart chromatique entre la première couleur et l'autre couleur ou entre la deuxième couleur et l'autre couleur, et
    b) sur la base de la valeur de consigne de température de couleur (TS), génération d'un signal de commande, lequel fait en sorte que la lampe (9) émette de la lumière de l'autre couleur correspondant à la valeur de consigne de température de couleur (TS) déterminée.
  16. Procédé pour la mise à disposition de signaux de commande pour une lampe (9), avec laquelle il est possible de produire de la lumière à température de couleur différente, présentant les étapes suivantes :
    a1) saisie de grandeurs d'entrée (1) dans une unité de saisie d'un dispositif de commande selon la revendication 13, les grandeurs d'entrée (1) étant une valeur de température de couleur (T1) et un écart chromatique (d), et la valeur de température de couleur (T1) correspondant à une première couleur, et
    a2) détermination d'une valeur de consigne de température de couleur (TS), laquelle correspond à une autre couleur, en fonction de la valeur de température de couleur (T1) et de l'écart chromatique (d),
    la valeur de consigne de température de couleur (TS) étant choisie de manière à ce que l'écart chromatique (d) entre la première couleur et l'autre couleur soit au moins approximativement identique à l'écart chromatique (d) prescrit ou à un multiple entier de l'écart chromatique (d) prédéterminé, et
    b) sur la base de la valeur de consigne de température de couleur (TS) déterminée, un signal de commande est généré, lequel fait en sorte que la lampe (9) émette de la lumière de l'autre couleur correspondant à la valeur de consigne de température de couleur (TS) déterminée.
  17. Procédé selon la revendication 15 ou 16,
    la lampe comprenant trois moyens d'éclairage (6, 7, 8) qui peuvent rayonner avec différentes couleurs.
  18. Procédé selon la revendication 17,
    les trois moyens d'éclairage (6, 7, 8) étant des DEL ou des lampes fluorescentes.
  19. Procédé selon l'une des revendications 15 à 18,
    une série d'au moins trois valeurs de température de couleur (T1, T2, T3) étant déterminée lors d'une autre étape, pour les trois couleurs correspondantes desquelles il est entendu que, entre respectivement deux couleurs voisines, il y a respectivement au moins approximativement un écart chromatique (d) de même importance.
  20. Procédé selon l'une des revendications 15 à 19,
    un système de coordonnées, dans lequel un écart géométrique entre deux localisations chromatiques constitue au moins approximativement une mesure pour un écart chromatique (d) déterminé, étant utilisé, pour la détermination du rapport entre deux valeurs de température de couleur (T1, T2) et l'écart chromatique (d) entre les deux couleurs qui correspondent aux deux valeurs de température de couleur (T1, T2), en faisant appel à la loi du rayonnement de Planck et aux sensibilités de l'oeil humain à la lumière rouge, verte et bleue ( x , y , z ).
  21. Procédé selon la revendication 20,
    la représentation du diagramme de chromaticité CIE 1976 étant choisie en tant que système de coordonnées.
EP07723821.0A 2006-04-07 2007-03-30 Commande de la temperature de couleur et de la localisation chromatique d'une lampe Not-in-force EP2005799B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006016513 2006-04-07
DE102006055615A DE102006055615A1 (de) 2006-04-07 2006-11-24 Farbtemperatur- und Farbortsteuerung für eine Leuchte
PCT/EP2007/002879 WO2007115706A1 (fr) 2006-04-07 2007-03-30 Commande de la température de couleur et de la localisation chromatique D'une lampe

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EP2005799A1 EP2005799A1 (fr) 2008-12-24
EP2005799B1 true EP2005799B1 (fr) 2014-07-23

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EP07723821.0A Not-in-force EP2005799B1 (fr) 2006-04-07 2007-03-30 Commande de la temperature de couleur et de la localisation chromatique d'une lampe

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US (1) US8058816B2 (fr)
EP (1) EP2005799B1 (fr)
CN (1) CN101422080B (fr)
DE (1) DE102006055615A1 (fr)
WO (1) WO2007115706A1 (fr)

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Publication number Publication date
WO2007115706A1 (fr) 2007-10-18
CN101422080B (zh) 2013-05-08
DE102006055615A1 (de) 2007-10-11
US8058816B2 (en) 2011-11-15
US20090174332A1 (en) 2009-07-09
CN101422080A (zh) 2009-04-29
EP2005799A1 (fr) 2008-12-24

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