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WO2018198062A1 - Procédé de commande de systèmes d'éclairage, système et produit-programme informatique correspondants - Google Patents

Procédé de commande de systèmes d'éclairage, système et produit-programme informatique correspondants Download PDF

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Publication number
WO2018198062A1
WO2018198062A1 PCT/IB2018/052897 IB2018052897W WO2018198062A1 WO 2018198062 A1 WO2018198062 A1 WO 2018198062A1 IB 2018052897 W IB2018052897 W IB 2018052897W WO 2018198062 A1 WO2018198062 A1 WO 2018198062A1
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WO
WIPO (PCT)
Prior art keywords
lighting sources
light radiation
gamut
colour
gamuts
Prior art date
Application number
PCT/IB2018/052897
Other languages
English (en)
Inventor
Alberto Alfier
Xiaolong Li
Original Assignee
Osram Gmbh
Osram S.P.A. - Societa' Riunite Osram Edison Clerici
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osram Gmbh, Osram S.P.A. - Societa' Riunite Osram Edison Clerici filed Critical Osram Gmbh
Priority to DE112018002224.2T priority Critical patent/DE112018002224T5/de
Publication of WO2018198062A1 publication Critical patent/WO2018198062A1/fr

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Classifications

    • 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 description relates to the control of lighting sources.
  • One or more embodiments may be applied to the control of lighting sources employing electrically powered light radiation generators such as solid-state light radiation generators, e.g. LED generators.
  • electrically powered light radiation generators such as solid-state light radiation generators, e.g. LED generators.
  • Lighting systems or installations may employ a plurality of lighting sources (e.g. electrically powered lighting sources) either of one model or of different models, which are adapted to cooperate in implementing a lighting action.
  • lighting sources e.g. electrically powered lighting sources
  • the overall perceivable lighting effect originates from the light emission of a plurality of lighting sources, the coherence or consistency of the light output from the various sources may therefore be a key feature.
  • the overall lighting effect may be perceived not only by a human observer, but also by devices (e.g. electronic devices) of various nature, which are adapted to detect the light radiation: this may be the case e.g. of the cameras included in smartphones or other mobile devices, which may be used to take photographs or film videos which may then be transmitted and broadcast, or of one or more sensors used to detect or map the light intensity on a surface.
  • the coherence or consistency of the light emission is an issue intrinsic to the technology of light radiation sources, such as e.g. LED sources.
  • the manufacturing processes of LED light radiation generators have intrinsic tolerances as regards e.g. flux, colour coordinates, forward voltage, thermal resistance, the position of a given chip in the respective package: all these factors may determine a possible variation of the light emission.
  • This situation may be particularly critical in the lighting applications wherein the lighting quality plays a key role.
  • reference may be made to general lighting environments such as points of sale, indoor and outdoor home installations, as well as medical or entertainment applications.
  • the coloured LEDs which are employed in such applications may exhibit, as regards the previously listed parameters, larger variations than white LEDs, e.g. as regards colour coordinates and flux.
  • the lighting sources such as LED sources undergo aging processes which lead to performance deterioration, as regards both flux and colour. This phenomenon may appear in a differentiated fashion on the basis of the operating conditions (specifically as a function of temperature) , with the light radiation sources included in a given lighting system being operated differently, so that the aging may have different intensities from source to source.
  • the aging effects may be due to a certain intrinsic variability, so that two sources which are used exactly at the same conditions may exhibit mutually different aging phenomena (e.g. the colour coordinate and flux shift being different from source to source) .
  • a further level of complexity may emerge when a new source is installed in a system including other sources which have already been operating for some time: in said conditions, the differences in colour and flux of the emitted light radiation may be even more evident and may be clearly perceived by an observer.
  • One or more embodiments aim at facing the previously outlined problems.
  • said object may be achieved thanks to a method having the features set forth in the claims that follow.
  • One or more embodiments may also refer to a corresponding lighting system, as well as a corresponding computer program product loadable in the memory of at least one processing device, and including software code portions to execute the method steps when the product is run on at least one computer.
  • the reference to said computer program product is intended to be equivalent to the reference to computer-readable media, containing instructions to control the processing system in order to coordinate the implementation of the method according to the present specification.
  • the reference to "at least one processing device" highlights the possibility of implementing one or more embodiments in a modular and/or distributed fashion.
  • One or more embodiments may tackle and solve the problems outlined in the foregoing by managing the flux value and the colour coordinates of a (e.g. LED) lighting source within each fixture of the overall installation or system, by carrying out a corresponding compensation action.
  • a (e.g. LED) lighting source within each fixture of the overall installation or system, by carrying out a corresponding compensation action.
  • Figures 1 and 2 are illustrative diagrams of aspects related to the use of lighting sources
  • FIG. 4 shows, again with reference to a CIE1931 colour space, some features of a method according to embodiments,
  • FIG. 9 is a block diagram of a system adapted to operate according to one or more embodiments.
  • Figure 10 is a flowchart exemplifying embodiments .
  • One or more embodiments may derive from the observation that the problems outlined in the introduction of the present specification may originate from the fact that the possibility of reaching a given target colour point is linked to the respective gamut. Said gamut may be different for each lighting source, because of the intrinsic variability due e.g. to the manufacturing technologies of the respective light radiation generators, e.g. LED generators.
  • One way to visually depict the intrinsic variations of the behaviour of a light radiation source involves the mapping in a colour space, such as e.g. the CIE1931 colour space, wherein the chromatic behaviour of a light radiation source may be represented as a gamut, such as gamuts gl and g2 shown by way of example in Figure 1.
  • CIE XYZ space (conventionally denoted as CIE1931) is a colour space which was mathematically defined by the "Commission Internationale de l'Eclairage” (CIE) in 1931. This colour space derives from test results combined in the specifications of the CIE RGB colour space, from which CIE XYZ was derived.
  • the intrinsic variations due to the LED manufacturing process may originate emissions with different colour features.
  • the overall result is that the lighting effect deriving from both light radiation sources lacks uniformity, because the light radiations emitted from the two sources are different from each other.
  • Figure 2 including two portions respectively denoted as a) and b) , further shows the previously described mechanism with reference to a colour point representation based on the HWS (Hue-Saturation-Value) system.
  • HWS Human-Saturation-Value
  • the two sources considered herein by way of example are driven with the same input as regards hue and saturation (the dimming value is not particularly relevant in the presently considered instance) ,
  • One or more embodiments may envisage identifying a gamut in common to the various lighting sources in a given lighting system or installation, and to "overwrite" said common gamut onto the single specific gamuts of each light radiation source.
  • said method may be based on the availability of photometric data of the lighting sources (e.g. of the light radiation generators, e.g. LED generators) included in the system. It is therefore possible to perform, on the various sources or fixtures, a calibrating action which may be compared to what is already envisaged in the conventional manufacturing processes of lighting sources or fixtures which include a plurality of radiation generators, e.g. LED generators.
  • the lighting sources e.g. of the light radiation generators, e.g. LED generators
  • Such a calibration process may envisage:
  • a local memory e.g. an EEPROM memory
  • EEPROM memory e.g. an EEPROM memory
  • Figure 3 is a representation, in the CIE1931 colour space, of a situation similar in principle to what has been previously exemplified with reference to Figures 1 and 2, i.e. the presence of two lighting sources or fixtures (each including a given number of light radiation generators, e.g. LED generators) having respective gamuts gl, g2 adapted to be represented, in the CIE1931 colour space, by respective polygonal lines Al, Bl, CI, Dl, El and respectively A2, B2, C2, D2 and E2.
  • two lighting sources or fixtures each including a given number of light radiation generators, e.g. LED generators
  • gamuts gl, g2 adapted to be represented, in the CIE1931 colour space, by respective polygonal lines Al, Bl, CI, Dl, El and respectively A2, B2, C2, D2 and E2.
  • Figures 4, 6 and Figure 6 (the latter in a simplified representation) exemplify the possibility of identifying (e.g. according to the procedure described in the following) an "intersection" area G_int between the gamuts gl and g2, including the portion of the CIE1931 colour space in common between gamuts gl and g2, i.e. the set of points which are present both in gamut gl and in gamut g2.
  • the observations outlined with reference to two gamuts gl, g2 may generally be extended to virtually any number of different gamuts. Specifically, given any number n of different gamuts, the problem is posed of calculating the intersection area among a plurality of polygonal areas (in the same number as the considered lighting sources) .
  • Said problem may be solved by resorting to different processing solutions, e.g. by taking into account elements as accuracy, time and complexity.
  • the identification of the intersection gamut G_int may be achieved according to the criterion exemplified in Figures 4 to 6, i.e. by locating the intersection points between the lines of the sides of the polygons which describe the various gamuts (i.e. gl and g2, in the presently considered example) .
  • This approach may substantially involve:
  • One or more vertexes of the polygon describing the intersection gamut may therefore correspond to the vertexes of one of the original gamuts, e.g., in Figures 4 and 6, the vertex 03 in the intersection gamut G_int corresponding to the vertex Bl of gamut gl, corresponding to the intersection between the sides Al- Bl and Bl-Cl belonging to the same gamut 1.
  • intersection points between lines e.g. intersection point 0L between the lines denoted as Line 1 and Line 2 may be located outside the colour space; such points are therefore destined to be discarded as "outliers".
  • gamuts g2 and g3 (the latter having vertexes A3, B3, C3) exemplified in Figures 7 and 8, therefore originating e.g. an intersection gamut G_int having vertexes 01, 02, 03, 04.
  • One or more embodiments may be implemented in a lighting system as exemplified in Figure 9, including a set of lighting sources SI, S2, Sn.
  • reference 1000 denotes a processing device 1000 adapted to calculate the information identifying the intersection gamut G_int and to provide it to a control device 1002 (of a type known in itself) which, on the basis of such information, is adapted to activate the set of lighting sources SI, S2, Sn, while controlling them in such a way that the radiation emitted thereby corresponds to a common target point C which may be reached by all sources, because it is included in the intersection gamut G_int .
  • a processing device 1000 adapted to calculate the information identifying the intersection gamut G_int and to provide it to a control device 1002 (of a type known in itself) which, on the basis of such information, is adapted to activate the set of lighting sources SI, S2, Sn, while controlling them in such a way that the radiation emitted thereby corresponds to a common target point C which may be reached by all sources, because it is included in the intersection gamut G_int .
  • Devices 1000 and 1002 may both be included in a control panel of a professional lighting module.
  • device 1000 (which is adapted to act onto photometric data which are exemplified herein by a repository DB) may be located remotely of device 1002 and/or it may be a mobile/portable device, the information about the intersection gamut G_int being transmitted from the remote device to device 1002.
  • One or more embodiments may adopt the procedure exemplified in the flowchart of Figure 10.
  • Such data may include e.g. data about flux and colour coordinates (Cx, Cy) of the radiation emitted by the radiation generators (e.g. LED generators) of the source.
  • Cx, Cy flux and colour coordinates
  • a reference to colour coordinates Cx, Cy - according the current denomination for the CIE 1931 colour space) is not to be construed as limiting, because the presently exemplified procedure may also be applied to different colour spaces.
  • Block 103 exemplifies the condition wherein, if said photometric data are not available in advance or are available in advance only for some sources and not for others, the data repository (DB in Figure 9) includes or is completed by photometric data which are collected (according to known criteria) so to say "on site”: for example, if they are not collected during the manufacturing process of the sources, said data may be collected by using a portable photometric detector.
  • the data repository includes or is completed by photometric data which are collected (according to known criteria) so to say "on site”: for example, if they are not collected during the manufacturing process of the sources, said data may be collected by using a portable photometric detector.
  • Step 104 corresponds to identifying, from said photometric data, a first gamut (e.g. gamut gl of Figures 3 and 4, identified by respective vertexes (Cx_i, Cy_i) such as e.g. the vertexes denoted as Al, Bl, CI, Dl, El.
  • a first gamut e.g. gamut gl of Figures 3 and 4, identified by respective vertexes (Cx_i, Cy_i) such as e.g. the vertexes denoted as Al, Bl, CI, Dl, El.
  • Block 105 represents the calculation (performed according to known criteria) of the equation representing, on the colorimetric plane, the sides of the polygon corresponding to said gamut (e.g. the sides Al-Bl, Bl-Cl, Cl-Dl, Dl-El, El-Al) .
  • Blocks 106 and 106a exemplify that the operations of blocks 104 and 105 are iteratively repeated until said calculation has been carried out for all sides of a given gamut and for all the gamuts/sources being considered (negative result in step 106: there are still sides to be calculated; negative result in step 106a: there are still gamuts to be examined) .
  • a step 107 locates the intersection points of the sides of the considered gamuts, in all possible combinations, i.e. (as stated in the foregoing) the intersections between the lines of sides belonging to different gamuts, as well as the intersections between the lines of sides belonging to the same gamut (in practice, the vertexes of each polygon describing one of the initial gamuts) .
  • various preliminary considerations may be taken into account as regards the position of the sides and the mutual proximity of the sides, so as to reduce the number of combinations to be examined .
  • step 108 exemplifies that one or more intersection points may be negligible, e.g. such as:
  • the points corresponding to cases ii) and iii) may be located immediately, and they may be discarded from the beginning in order to reduce the number of cases to verify.
  • step 108 The existence of said conditions may be verified in step 108, so that, if the point is of no interest (negative result of step 108), it may be excluded from the calculation (step 108a), thus reducing the number of combinations to be considered.
  • step 108 of Figure 10 exemplifies a verification step performed starting from the first intersection point (generally denoted as Cx_k, Cy_k) obtained in block 107, in order to verify whether said element belongs to the gamut of all the considered sources: if said condition is verified (positive result in step 108), the point is stored as a vertex of the intersection gamut common to the various sources, in order to proceed with the processing. If this is not the case (negative result in step 108), the considered point is discarded, as shown in block 108a.
  • the first intersection point generally denoted as Cx_k, Cy_k
  • the presently outlined procedure aims at verifying if a given point (Cx_k, Cy_k) belongs to the original polygon of a source (fixture), e.g. because it is included therein or is located on the perimeter thereof.
  • the procedure may be repeated on the same point for the same number n of times as the number of the fixtures selected at the beginning, while changing the polygon (the gamut) every time, but the verification always regards one point with reference to a polygon.
  • Step 109 exemplifies the verification whether the processing described in step 108 (storing a given point or discarding the same) has been performed for all points obtained in step 107 (negative result in step 109: there are still points to be verified; positive result in step 109: all points have been verified) .
  • the result which may be obtained with such a procedure, exemplified in block 110, may be represented as an array of points in a given colour plane (e.g. CIE 1931, to keep to the same simplified example), which identify the vertexes of the intersection gamut G_int .
  • a given colour plane e.g. CIE 1931, to keep to the same simplified example
  • such vertexes are adapted to be ordered e.g. clockwise or anticlockwise, so as to obtain an ordered table (which for example may represent the information which, in the diagram of Figure 9, device 1000 provides to device 1002) .
  • Block 111 exemplifies the optional possibility of further improving the identification of the calculated intersection area or gamut G_int by taking into account the shift of the LED characteristics, due e.g. to temperature, aging or other variable parameters, which may cause a variation of the LED parameters, so as to obtain, at the end of said operation, a resulting gamut G_int which is common to all considered sources or fixtures SI, S2, ... , Sn, which is also compensated with respect to the previously mentioned shift phenomena . It will appreciated that the action exemplified in block 111 is optional and not mandatory.
  • the possibility is therefore offered of applying the intersection gamut G_int (which may compensated or not compensated, according to the application and usage needs) to the various sources SI, S2, .., Sn of the system or installation.
  • This enables establishing the target colour C in such a way that it is included within the intersection gamut G_int which is common to all light radiation sources, the consequent possibility being offered - to all sources SI, S2, Sn of the system or installation which are subjected to the "calibration" action described in the foregoing - of producing such a colour while avoiding the lack of precision exemplified by the distance between points CI and C2 in Figure 1.
  • the target colour if it is not available as colour coordinates in the same space wherein the source calibration action has been carried out, may be converted starting from a set of specified input values in different systems (e.g. RGB, CMY o HSV) with an optional previous conversion to the colour space employed.
  • RGB CMY o HSV
  • Block 112 exemplifies the optional possibility, in one or more embodiments, of performing a further regulation/calibration on the consistency of the light radiation, with reference to the intensity of the luminous flux, due to the fact that, for example, the human eye may perceive colours which are actually identical as if they were different colours, if they have a different intensity level.
  • Block 112 exemplifies e.g. the optional possibility, after obtaining the colour ratio for each source of fixture so as to achieve the target colour, of calculating the total flux of the resulting colour.
  • a light intensity threshold F_lim
  • F_lim the value which (also) the least efficient LED may achieve by being driven to the maximum value or, in the case of a LED with performances exceeding the expected level, by dimming the light input thereof.
  • the step denoted as 113 exemplifies the possibility of regulating the light radiation so as to reach said threshold level, in order to achieve a desired brightness uniformity.
  • One or more embodiments as exemplified herein enable achieving advantages of various nature.
  • all the sources or fixtures may be used individually at their whole potential, while being optionally limited according to the needs established by the intersection gamut G_int (only) when it is desired to achieve a consistency among a plurality of sources.
  • the calibration process described in the foregoing may be implemented so to say in a volatile fashion: as a function of different application or usage needs, a given source may be used alternatively in various groups of sources, including new sets of sources (other than the one they originally belonged to) .
  • the calibration process may be adapted to be permanent, e.g. when a given group of light sources is destined to be used together in a virtually constant way.
  • the group of sources may be chosen in different ways at different times, so as to implement a calibration compensation (e.g. as regards both G_int and F_lim) only for a given group of selected sources, without acting on sources which have not been chosen and which may be used at their full potential (both in terms of flux and in terms of colour gamut achievable) .
  • a calibration compensation e.g. as regards both G_int and F_lim
  • the gamut G_int practically corresponds to the intrinsic gamut, without limitations on the performances of said source, which may therefore be used at its full potential (100% of the colour gamut and 100% of the light output) .
  • the presently exemplified calibration procedure enables (e.g. in step 103 of Figure 10) measuring the colour and flux characteristics (Cx, Cy) at a given instant, and correctly calculating the intersection gamut G_int which represents the state of the radiation sources at a given instant.
  • an aging model is implemented in the sources, starting from the intersection gamut G_int calculated at a given instant (e.g. at Oh lifetime of the sources), it is possible to estimate (e.g. at step 111 in Figure 10) a possible expected shift of G_int over time, so as to implement a compensation of the deterioration of the radiation generators without the need of periodically repeating the system calibration in the previously described fashion.
  • One or more embodiments may therefore concern a method of operating a plurality of lighting sources (e.g. SI, S2,..., Sn) activatable (e.g. 1002) to emit light radiation at colour points in respective light radiation emission gamuts (e.g. gl, g2 ; g2, g3) in a colour space, the method including:
  • an intersection gamut e.g. G_int
  • G_int an intersection gamut of the respective light radiation emission gamuts of the lighting sources in said plurality of lighting sources, the intersection gamut including colour points in said colour space common to the light radiation emission gamuts of the lighting sources in said plurality of lighting sources
  • a method may include :
  • a light flux threshold value (e.g. F_lim) reachable by all the lighting sources in said plurality of lighting sources, - activating the lighting sources in said plurality of lighting sources to emit light radiation at said light flux threshold value.
  • intersection gamut including said intersections in the vertexes (e.g. 01, 02, 03, 04, 05, 06) of said intersection gamut .
  • a repository e.g. DB
  • intersection gamut as a function of light radiation emission gamut data retrieved in said repository.
  • intersection gamut as a function of light radiation emission gamut data obtained via said photometric measurement.
  • One or more embodiments may include applying to said intersection gamut compensation over time as a function of the variation of the light radiation emission parameters of said lighting sources.
  • said colour space may be the CIE1931 colour space.
  • One or more embodiments may concern a lighting system including a plurality of lighting sources activatable (e.g. 1002) to emit light radiation at colour points in respective light radiation emission gamuts in a colour space, the system being adapted to include a control unit (e.g. 1002) configured for activating said lighting sources to emit light radiation at colour points in said respective light radiation emission gamuts in said colour space, the control unit being adapted to be configured for receiving (e.g.
  • control unit being adapted to be configured for activating the lighting sources in said plurality of lighting sources to emit light radiation of a common target colour point in said colour space, said common target colour point being included in said intersection gamut.
  • One or more embodiments may include a processing unit (e.g. 1000) configured for calculating said intersection gamut of said respective light radiation emission gamuts of the lighting sources in said plurality of lighting sources, said intersection gamut including colour points in said colour space common to the light radiation emission gamuts of the lighting sources in said plurality of lighting sources.
  • a processing unit e.g. 1000
  • said intersection gamut including colour points in said colour space common to the light radiation emission gamuts of the lighting sources in said plurality of lighting sources.
  • said lighting sources may include solid-state light radiation generators, optionally LED generators.
  • One or more embodiments may include a computer program product loadable in the memory of at least one processing unit (e.g. 1000) and including software code portions for calculating said intersection gamut in the method according to one or more embodiments.
  • Colour points CI, C2 Target colour point C Light flux threshold F_lim Polygon Al, Bl, CI, Dl, El Polygon A2, B2, C2, D2, E2 Polygon A3, B3, C3
  • Control unit 1002 Calculation 104 - 111

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

La présente invention concerne un système d'éclairage qui comprend des sources d'éclairage (S1, S2, ..., Sn) pouvant être activées (1002) afin d'émettre un rayonnement lumineux à des points de couleur dans des gammes d'émissions de rayonnement lumineux respectives dans un espace de couleur. Après le calcul (1000) d'une gamme d'intersections des gammes d'émissions de rayonnement lumineux respectives des sources d'éclairage (S1), la gamme d'intersections comprenant des points de couleur communs aux gammes d'émissions de rayonnement lumineux des sources d'éclairage, les sources (S1, S2, ..., Sn) elles-mêmes sont activées afin d'émettre un rayonnement lumineux d'un point de couleur cible commun compris dans ladite gamme d'intersections (G_int).
PCT/IB2018/052897 2017-04-28 2018-04-26 Procédé de commande de systèmes d'éclairage, système et produit-programme informatique correspondants WO2018198062A1 (fr)

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DE112018002224.2T DE112018002224T5 (de) 2017-04-28 2018-04-26 Verfahren zum Steuern von Beleuchtungssystemen, entsprechendes System und Computerprogrammprodukt

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021191049A1 (fr) * 2020-03-27 2021-09-30 Signify Holding B.V. Systèmes et procédés de ciblage de couleur pour des couleurs blanches précises et des couleurs saturées

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060104058A1 (en) * 2004-03-15 2006-05-18 Color Kinetics Incorporated Methods and apparatus for controlled lighting based on a reference gamut
US20090009092A1 (en) * 2004-09-17 2009-01-08 Lumidrives Limited Light emitting diode (led) control
WO2009066198A1 (fr) * 2007-11-20 2009-05-28 Koninklijke Philips Electronics N.V. Procédé et dispositif de commande d'unité d'éclairage
US20110187290A1 (en) * 2005-09-19 2011-08-04 Christian Krause Color Control of Dynamic Lighting
DE102015002640A1 (de) * 2015-03-03 2016-03-24 Diehl Aerospace Gmbh Farbabstimmung zwischen unterschiedlichen Leuchten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060104058A1 (en) * 2004-03-15 2006-05-18 Color Kinetics Incorporated Methods and apparatus for controlled lighting based on a reference gamut
US20090009092A1 (en) * 2004-09-17 2009-01-08 Lumidrives Limited Light emitting diode (led) control
US20110187290A1 (en) * 2005-09-19 2011-08-04 Christian Krause Color Control of Dynamic Lighting
WO2009066198A1 (fr) * 2007-11-20 2009-05-28 Koninklijke Philips Electronics N.V. Procédé et dispositif de commande d'unité d'éclairage
DE102015002640A1 (de) * 2015-03-03 2016-03-24 Diehl Aerospace Gmbh Farbabstimmung zwischen unterschiedlichen Leuchten

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021191049A1 (fr) * 2020-03-27 2021-09-30 Signify Holding B.V. Systèmes et procédés de ciblage de couleur pour des couleurs blanches précises et des couleurs saturées
JP2023519364A (ja) * 2020-03-27 2023-05-10 シグニファイ ホールディング ビー ヴィ 正確な白色及び飽和色に対するカラーターゲティングのためのシステム及び方法
US12101856B2 (en) 2020-03-27 2024-09-24 Signify Holding B.V. Systems and methods for color targeting for accurate white colors and saturated colors
JP7664944B2 (ja) 2020-03-27 2025-04-18 シグニファイ ホールディング ビー ヴィ 正確な白色及び飽和色に対するカラーターゲティングのためのシステム及び方法

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