[go: up one dir, main page]

WO2011070494A2 - Interface utilisateur pour système à del multicolores permettant de régler indépendamment le point de couleur et le spectre - Google Patents

Interface utilisateur pour système à del multicolores permettant de régler indépendamment le point de couleur et le spectre Download PDF

Info

Publication number
WO2011070494A2
WO2011070494A2 PCT/IB2010/055573 IB2010055573W WO2011070494A2 WO 2011070494 A2 WO2011070494 A2 WO 2011070494A2 IB 2010055573 W IB2010055573 W IB 2010055573W WO 2011070494 A2 WO2011070494 A2 WO 2011070494A2
Authority
WO
WIPO (PCT)
Prior art keywords
light
light sources
emitting device
settings
setting
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB2010/055573
Other languages
English (en)
Other versions
WO2011070494A3 (fr
Inventor
Stefan Marcus Verbrugh
Reinhard Ruben Voorspoels
Willem Christiaan Van Abkoude
Petrus Johannes Mathijs Van Der Burgt
Ralph Kurt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2011070494A2 publication Critical patent/WO2011070494A2/fr
Publication of WO2011070494A3 publication Critical patent/WO2011070494A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 invention generally relates to the field of lighting.
  • the present invention relates to a controller for controlling properties of a light-emitting device comprising a plurality of light sources, each of the light sources being configured to emit light within a predetermined wavelength range.
  • Light is composed of electromagnetic waves having various wavelengths within a wavelength range of about 400 nm to about 700 nm. Each electromagnetic wave having a wavelength within this range produces light exhibiting a distinct color of light, from deep blue/purple at a wavelength of about 400 nm to deep red at a wavelength of about 700 nm. By “mixing" electromagnetic waves having different wavelengths light exhibiting various colors can be produced.
  • Light-emitting devices comprising a number of light sources, each light source being capable of emitting light that in general has a different color compared to the other light sources, may be utilized to provide light having a variety of colors.
  • a light- emitting diode (LED) device comprising three LEDs emitting light in different wavelength ranges (i.e. exhibiting different colors) can be utilized to provide light having virtually any color point within the triangle in a color space, for example in a chromaticity diagram, defined by three color points of the respective LEDs.
  • the color temperature of a light source is determined by comparing the chromaticity of the light source with the chromaticity of an ideal black-body radiator. The temperature at which the black-body radiator matches the color of the light source is taken as the color temperature of the light source.
  • the black body locus (also known as Planckian locus, or white line) is the path or locus that the color of an incandescent black body would take in a particular chromaticity space (e.g., in a chromaticity diagram) as the temperature of the black body changes.
  • the locus goes from deep red at relatively low temperatures (at about 700 K), on through orange, yellowish white, white, and finally bluish white at higher temperatures.
  • the precise color and the spectrum of the light may be in general important.
  • the spectral quality of colored light is important.
  • the light is generally used to illuminate objects and people.
  • the appearance of these objects and persons e.g., skin tones of the persons
  • the appearance of different colors on objects may be important.
  • a lighting designer may want to create a desired lighting effect apart from merely making the object or person visible as is done with white light.
  • a filter between a light-emitting device (e.g., a lamp) and the object or person to be illuminated in order to adjust the spectral content of the light used for illumination.
  • a light-emitting device e.g., a lamp
  • gel filters which block part of the light spectrum and transmit another part of the light spectrum.
  • the part of the spectrum (i.e. the wavelength range) of the light that is transmitted is relatively wide and comprises more than one color.
  • a selection of color is made by the user selecting the appropriate gel filter and arranging it in front of the lamp or by the user operating an automated system for selecting one filter to be placed in front of the lamp out of several filters.
  • dichroic filters are employed.
  • Dichroic filters comprise multiple layers or films for creating wavelength dependent reflection and transmission.
  • dichroic filters are color filters used to selectively pass light of a small range of colors while reflecting other colors.
  • a mechanism for shifting the position of the dichroic filter in a controlled manner may enable an in principle continuous color adjustment of the light.
  • Such objects may for example comprise the costumes of actors, portions of the scenery and faces of the actors.
  • an illumination of the objects other than with white light some of the objects may be more visually accentuated than other objects as compared to illumination with white light, and some other objects may be less visually emphasized as compared to illumination with white light, as perceived by the viewer, depending on the spectral content of the light used for illumination and the spectral reflectance of the color of the objects.
  • each filter is associated with a specific relation between the total color impression of the illuminated area on the stage and what object or objects are and are not visually emphasized in the illuminated area on the stage.
  • the user when employing gel filters for adjusting the spectral content of the light used for illumination, the user (e.g., a lighting designer) typically has to know from experience which filter that yields the desired effect. Gaining that experience, by placing different filters in front of the lamp and examining the effect of the different filters on the spectral content of the light used for illumination, may be time consuming and demanding work as it entails physically placing each of the different filters between the lamp and the object(s) or person(s) to be illuminated and examining the effect of each filter on the spectral content of the light used for illumination.
  • dichroic filters may enable a user to select the desired color point of the light used for illumination.
  • the appearance of the object(s) or person(s) (e.g., skin tones of the persons) to be illuminated is determined by the nature of the filter that is used and the spectrum of the light emitted from the lamp.
  • Mechanisms for controlling the color using a set of dichroic filters are in general relatively complex, expensive and/or sensitive to failures (e.g., because of the heat generated by operation of the lamp).
  • a controller and a method for controlling properties of light emitted from a light- emitting device comprising a plurality of light sources such as to enable a user to browse through many settings of the intensities of the plurality of light sources relatively to each other, at a fixed color point that has been selected by the user, while concurrently being able to view the results corresponding to the respective settings.
  • a controller and a method for controlling properties of light emitted from a light-emitting device having the features defined in the independent claims are provided. Further advantageous embodiments of the present invention are defined in the dependent claims.
  • the present invention is based on employing a controller, comprising a user interface and a processing unit, for adjusting the intensities of the plurality of light sources included in the light-emitting device by means of two independent steps.
  • a color point of the available color points of light emitted from the light-emitting device is selected. This color point may either be white light (i.e. having a color point situated on the black body locus (BBL)) or non- white light (i.e. having a color point situated off the BBL).
  • BBL black body locus
  • one or more settings for the intensities of the plurality of light sources relatively to each other are selected.
  • the one or more settings are selected from settings, each of which settings, when applied to the plurality of light sources, results in that the light emitted from the light-emitting device exhibits the color point selected in the first step.
  • the second step may enable the user to browse through different settings at a fixed color point (as set in the first step) while concurrently being able to view the results corresponding to the respective settings.
  • a controller adapted to control properties of light emitted from a light-emitting device comprising a plurality of light sources, each of the light sources being configured to emit light within a predetermined wavelength range.
  • the controller comprises a user interface (UI) and a processing unit (PU).
  • the UI is adapted to enable a user to select at least one color point of the available color points of light emitted from the light-emitting device, whereby the controller is provided with first user input.
  • the available color points of the light emitted by the light-emitting device are based on the wavelength ranges of the respective light sources.
  • the PU is adapted to generate a plurality of first settings of the intensities of the plurality of light sources relatively to each other, wherein each setting of said plurality of first settings, when applied to the plurality of light sources, results in that light emitted from the light-emitting device exhibits the selected color point.
  • the UI is further adapted to enable the user to select at least one setting of the plurality of first settings, whereby the controller is provided with second user input.
  • the PU can be further adapted to adjust the intensities of the plurality of light sources relatively to each other on the basis of the second user input in accordance with the selected at least one setting of the plurality of first settings.
  • Such a configuration may facilitate or even enable the user to browse through many settings of the intensities of the plurality of light sources relatively to each other, at a fixed color point selected by the user, while concurrently being able to view the results corresponding to the respective settings.
  • the controller may adapt the setting of the light source intensities relatively to each other substantially instantaneously as soon as a new setting is selected or indicated by the user, which may provide the user with a "what-you-see-is-what-you-get" procedure for controlling properties of light emitted from the light-emitting device.
  • Such a configuration may enable the user (e.g., a lighting designer) to create two or more different settings of the light source intensities relatively to each other that results in similar or identical general color impressions (atmospheres) as perceived by a viewer, but visually highlighting or emphasizing different objects in the illuminated area (or such that each setting of the light source intensities relatively to each other enables visually highlighting or emphasizing a particular object or objects differently with respect to the other setting(s)).
  • a lighting designer to create two or more different settings of the light source intensities relatively to each other that results in similar or identical general color impressions (atmospheres) as perceived by a viewer, but visually highlighting or emphasizing different objects in the illuminated area (or such that each setting of the light source intensities relatively to each other enables visually highlighting or emphasizing a particular object or objects differently with respect to the other setting(s)).
  • the lighting designer having prior to the play browsed through many settings of the intensities of the plurality of light sources relatively to each other for the present color point, may choose one of the settings of the intensities of the light sources relatively to each other such that the red costume is less well rendered compared to other settings. In this manner, the red costume (and hence, the actor wearing the red costume) is less visually emphasized compared to other objects and/or persons on the stage.
  • the lighting designer may choose one of the settings of the intensities of the light sources relatively to each other such that the red costume is relatively well rendered compared to other settings, such that the red costume is visually emphasized or highlighted (e.g., such that the visibility of the red costume is increased).
  • the light illuminating the stage results in similar or identical general color impressions (atmospheres) as perceived by a viewer at both the first and the second stage in the play, but visually highlights or emphasizes different objects in the illuminated area on the stage at the different stages in the play.
  • the lighting designer may noticeably change the rendering of the red costume between the first and the second stage as perceived by the viewer, while only changing the appearance of other objects and/or persons on the stage relatively little or even negligible between the first and second stage in the play.
  • the UI may be further adapted to indicate the available color points of light emitted from the light-emitting device to the user.
  • Such indication can for example be visual and/or auditory.
  • Such visual indication may for example be presented to the user by means of a display screen.
  • the visual indication may comprise a color diagram, also known as a color triangle, and/or a portion of the color diagram, e.g. a zoomed in portion of the color diagram covering portions of the BBL or a zoomed in portion of the color diagram comprising the currently selected color point.
  • the visual indication may comprise a digital/numeric indication, e.g. the currently selected intensities of each of the different light sources (color channels) as a fraction of the maximum intensity of the respective light source.
  • the number of color channels is at least three.
  • the visual indication may comprise an indication of the ranges within which the intensity levels of the respective individual color channels can be varied, while keeping both the color point and the total light intensity at the predefined/user-defined levels.
  • the LEDs may for example have a white (W), red (R), green (G), blue (B) or amber (A), cyan (C), deep red (dR) and/or deep blue (dB) emission spectrum.
  • White can be warm white (WW), neutral white (NW) and/or cool white (CW).
  • the light-emitting device may comprise a plurality of light sources having colors such as (RGBW), (RGB + WW), (RGBA), (RGBAW), (RGB AC), (RGBAdR), (RGBACdR), (RGBACdRW), (RGBACdRdB), etc.
  • the available color points of light emitted from the light-emitting device may be generated, for instance by the PU, on the basis of the wavelength ranges of the respective light sources of the light-emitting device.
  • the controller may comprise a communication unit (CU) adapted to receive a plurality of wavelength control signals from the light source, each wavelength control signal being indicative of the predetermined wavelength range of light emitted by a respective light source.
  • CU communication unit
  • the UI may be further adapted to indicate the plurality of first settings to the user.
  • Such indication can for example be visual and/or auditory.
  • a CU may be adapted to adjust the intensities of the plurality of light sources relatively to each other on the basis of the second user input in accordance with the selected at least one setting of the plurality of first settings, for example by means of communicating to the light source control signals corresponding to the second user input in accordance with the selected at least one setting of the plurality of first settings.
  • a method of operating a light-emitting device that comprises a plurality of light sources, each of which is being configured to emit light within a predetermined wavelength range.
  • the method comprises enabling a user to select by means of first user input at least one color point of the available color points of light emitted from the light-emitting device.
  • the available color points are based on the wavelength ranges of the respective light sources.
  • the method comprises generating a plurality of first settings of the intensities of the plurality of light sources relatively to each other, wherein each setting of the plurality of first settings, when applied to the plurality of light sources, results in that light emitted from the light- emitting device source exhibits the selected color point.
  • the method comprises enabling the user to select at least one of the plurality of first settings by means of second user input. On the basis of the second user input, the intensities of the plurality of light sources relatively to each other are adjusted in accordance with the selected at least one setting of the plurality of first settings.
  • Such a method may enable achieving the same or similar advantages as the advantages achieved by the controller according to the first aspect of the present invention.
  • a computer program product adapted to, when executed in a processor unit, perform a method according to the second aspect of the present invention or any embodiment thereof.
  • a computer-readable storage medium on which there is stored a computer program product adapted to, when executed in a processor unit, perform a method according to the second aspect of the present invention or any embodiment thereof.
  • a luminaire comprising a light-emitting device that comprises a plurality of light sources, each of the light sources being configured to emit light within a predetermined wavelength range.
  • the luminaire further comprises a controller according to the first aspect of the present invention or any embodiment thereof, the controller being adapted to control properties of light emitted from the light-emitting device.
  • the plurality of light sources preferably comprises a plurality of solid-state light sources, such as light-emitting diodes (LEDs).
  • LEDs may be inorganic or organic.
  • LEDs may be selected from the group comprising AlInGaP and InGaN based LEDs, direct emitting LEDs, partially and full phosphor converted LEDs.
  • a combination of direct emitting LEDs and phosphor converted LEDs may be used.
  • LEDs having a relatively narrow emission spectrum may be used in combination with LEDs having a relatively broad emission spectrum.
  • the PU may be adapted to generate a second setting of the intensities of the plurality of light sources relatively to each other such that the second setting, when applied to the plurality of light sources, results in that the light emitted from the light-emitting device exhibits the selected color point.
  • the PU may be adapted to adjust the intensities of the plurality of light sources relatively to each other on the basis of the second setting.
  • the controller may adjust the intensities of the plurality of light sources relatively to each other such that light emitted from the light-emitting device exhibits the selected color point. This may be performed basically immediately following the selection of the desired color point, before the user browses other settings by means of second user input, as described in the foregoing.
  • Such a configuration enables selecting a "default" setting for the intensities of the plurality of light sources relatively to each other.
  • the default setting may for example be adapted to user, lighting design and/or application requirements. Examples of such default settings are described in the following.
  • the PU may be adapted to generate a second setting of the intensities of the plurality of light sources relatively to each other such that the color rendering index (CRI) for the light emitted by the light-emitting device is at a maximum and such that the second setting, when applied to the plurality of light sources, results in that the light emitted from the light-emitting device exhibits the selected color point.
  • the PU may be adapted to adjust the intensities of the plurality of light sources relatively to each other on the basis of the second setting.
  • the intensities of three of the light sources relatively to each other may be adjusted such that light emitted from the light-emitting device exhibits the selected color point.
  • the intensity of one of the other light sources relatively the other may then be adjusted so as to adjust the CRI for the light emitted by the light-emitting device, and the intensity of the last remaining light source relatively the other may be adjusted such as to adjust the color impression
  • Atmosphere resulting from illuminating an object or a location as perceived by a viewer.
  • default preset values for the first settings after the second settings have been set are such that, when the default preset values are applied to the plurality of light sources, the highest CRI when compared to other settings of the intensities of the plurality of light sources relatively to each other is obtained at the selected color point and the required total lumen output from the light-emitting device is obtained.
  • the PU may be adapted to generate a second setting of the intensities of the plurality of light sources relatively to each other such that the color rendering index for the light emitted by the light-emitting device has a value that is the highest when compared to other settings of the intensities of the plurality of light sources relatively to each other, while conserving the selected color point of light emitted from the light-emitting device.
  • the PU may be adapted to generate default preset values of the intensities of the plurality of light sources relatively to each other such that, when the default preset values are applied to the plurality of light sources, the light intensities of the different color channels are set such that spectrally a relatively close match or even the best match with one of the known conventional gel spectra (i.e. spectra resulting from utilizing conventional gel filters) is obtained with respect to the light output from the light- emitting device.
  • the selected color point is kept substantially constant or even fixed and the color point of the closest gel spectra is mimicked. In this manner color effects such as known in the art (using conventional gel filters) can be achieved.
  • the PU may be adapted to generate a second setting of the intensities of the plurality of light sources relatively to each other such that the difference between the contributions to the total luminous flux of the light-emitting device from each light source is at a minimum, and such that the second setting, when applied to the plurality of light sources, results in that the light emitted from the light-emitting device exhibits the selected color point.
  • the PU may be adapted to adjust the intensities of the plurality of light sources relatively to each other on the basis of the second setting.
  • the PU may be adapted to generate a second setting of the intensities of the plurality of light sources relatively to each other such that the difference between the contributions to the total luminous flux of the light-emitting device from each light source is the lowest when compared to other settings of the intensities of the plurality of light sources relatively to each other, while conserving the selected color point of light emitted from the light-emitting device.
  • the rendering of colors of the object(s) illuminated by the light-emitting device may be increased.
  • luminous flux of the light-emitting device it is referred to the total light power emitted by the light-emitting device.
  • the UI may be adapted to enable a user to select the total light output of the light-emitting device by means of the first user input or other user input, for example on basis of user, capacity or application requirements.
  • the PU On the basis of the user input, the PU may be adapted to adjust the intensities of the plurality of light sources such that the selected total light output of the light-emitting device is achieved.
  • the UI may be adapted to enable a user to select at least one of the wavelength ranges.
  • the PU may be adapted to generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other under the constraint of keeping the intensity of the light source associated with the selected at least one wavelength range constant and/or different from zero.
  • the UI may enable the user to select one or more of the light sources, whose intensity or intensities are fixed at some value, after which the controller may generate the plurality of first settings of the light sources relatively to each other while keeping the intensity or intensities of the selected one or more light sources at the fixed value.
  • Such a configuration enables to even further visually emphasize or highlight an object or a person having a certain color, the object or person being illuminated by light from the light-emitting device. This is further described with reference to the following example.
  • the user has selected a color point that is close to the BBL, such that light having a light color or a substantially white color is used for illuminating the object or person.
  • the object or person has a certain color that in general is different from the color of the light illuminating the object or person.
  • the intensity of a selected light source, emitting light having a color point close or equal to the color point of the color of the object or person, may be kept at a fixed value while generating the plurality of first settings of the light sources relatively to each other.
  • the plurality of first settings may be generated such that the light of the light-emitting device is a mixture of light having different color points, wherein the mixture of light includes a proportion of light having a color point close to or equal to the color point of the color of the object or person (for example, white light used for illuminating the object or person, which has a red color, is mixed with a proportion of light having a color point close to or equal to red).
  • the resulting mixture of light may even further visually emphasize or highlight the object or person.
  • the UI may be further adapted to indicate the wavelength ranges to the user.
  • Such indication can for example be visual and/or auditory.
  • the PU may be adapted to generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the total flux of the light emitted by the light-emitting device is at a maximum or the energy efficiency of the light-emitting device is at a maximum.
  • the PU may be adapted to generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the total flux of the light emitted by the light-emitting device or the energy efficiency of the light-emitting device is the highest when compared to other settings of the intensities of the plurality of light sources relatively to each other.
  • the PU may be adapted to generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the total flux of the light emitted by the light-emitting device and the energy efficiency of the light-emitting device is the highest when compared to other settings of the intensities of the plurality of light sources relatively to each other.
  • Such a configuration may enable generating a plurality of first settings adapted to user, lighting design and/or application requirements. Examples of such settings are described in the following.
  • the PU may be adapted to, if the light-emitting device comprises at least five light sources emitting light within at least five distinct wavelength ranges and if the selected at least one color point is situated on the BBL, generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the color rendering index for the light emitted by the light-emitting device is at a maximum.
  • the PU may be adapted to, if the light-emitting device comprises at least five light sources emitting light within at least five distinct wavelength ranges and if the selected at least one color point is situated on the BBL, generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the color rendering index for the light emitted by the light-emitting device has a value that is the highest when compared to other settings of the intensities of the plurality of light sources relatively to each other.
  • the PU may be adapted to, if the selected at least one color point is situated off the BBL, generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the difference between the contributions to the total luminous flux of the light-emitting device from each light source is at a minimum.
  • the PU may be adapted to, if the selected at least one color point is situated on the BBL, generate the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the difference between the contributions to the total luminous flux of the light-emitting device from each light source is the lowest when compared to other settings of the intensities of the plurality of light sources relatively to each other.
  • the PU may be adapted to detect a change in at least one operation parameter of a respective light source, by comparing the at least one operation parameter with a previous value of at least one operation parameter of the respective light source.
  • the PU may be adapted to, on a condition that a change is detected, on the basis of the change generate a new at least one operation parameter for the respective light source such that, when the new at least one operation parameter is applied to the respective light source, the at least one selected color point is approximately maintained or conserved.
  • the PU may be adapted to adjust the at least one operation parameter of the respective light source in accordance with the new at least one operation parameter.
  • the selected color point can be approximately maintained or even conserved by a operation parameter feedback arrangement in case of sudden disturbances or gradual changes occurring internally or externally with respect to the light-emitting device that may have an impact on the operation of the light-emitting device, for example a relatively large temperature change in the surroundings of the light-emitting device, material changes in the light sources affecting the operation of the light sources due to aging thereof, etc.
  • the PU may be configured such as to maintain the selected color point in case of changes in one or more operation parameters of a respective light source within a predetermined fraction of the value of the current color point, for example within about 5 MacAdam ellipses, or color ovals, of the value of the current color point.
  • a MacAdam ellipse it is referred to a region on a chromaticity diagram that comprises all colors that are indistinguishable to an observer from the color at the center of the region.
  • the controller may comprise a memory unit for storing at least one setting of the plurality of first settings.
  • the UI may be adapted to enable the user to select at least one setting of the stored at least one setting of the plurality of first settings, whereby the controller is provided with third user input.
  • the PU may be adapted to adjust the intensities of the plurality of light sources relatively to each other on the basis of the third user input in accordance with the selected at
  • a user may store a set including one or more first settings and later recall any one of the stored first settings and apply the recalled setting to the plurality of light sources.
  • the light-emitting device may comprise at least three light sources, the light sources being configured such that at least three of the light sources emit light within different wavelength ranges relatively to each other.
  • Such a configuration can be utilized to provide light having virtually any color point within the triangle in a color space, for example in a CIE chromaticity diagram, defined by three color points of the respective light sources.
  • Fig. 1 A is a schematic block diagram of a controller according to an exemplifying embodiment of the present invention for controlling properties of light emitted from a light-emitting device;
  • Fig. IB is a schematic block diagram of a luminaire according to an exemplifying embodiment of the present invention, the luminaire comprising a light-emitting device and a controller according to the embodiment described with reference to Fig. 1 A for controlling properties of light emitted from the light-emitting device;
  • Fig. 2 is a schematic flow diagram of a method of controlling properties of light emitted from a light-emitting device according to an exemplifying embodiment of the present invention.
  • Fig. 3 is a schematic view of different exemplifying types of computer readable storage mediums according to embodiments of the present invention.
  • the same reference numerals denote the same or similar elements throughout the views.
  • a schematic block diagram of a controller 100 for controlling properties of light emitted from a light-emitting device 150, comprising a plurality 160 of light sources 170A, 170B, 170F.
  • the controller 100 comprises a user interface (UI) 110 and a processing unit (PU) 120.
  • UI user interface
  • PU processing unit
  • the UI 110 and the PU 120 may communicate with each other, and each of the UI 110 and the PU 120 may communicate signals to, and receive signals from, the light-emitting device 150.
  • UI user interface
  • PU processing unit
  • each of the UI 110 and the PU 120 may communicate signals to, and receive signals from, the plurality 160 of light sources 170A, 170B, ..., 170F directly.
  • the controller 100 further comprises a memory unit 140 (optional) for storing data.
  • the number of light sources in the light-emitting device is not limited to six as depicted in Fig. 1 A but the number of light sources may be in principle any number, for example three, five, seven, eight or ten.
  • the communication back and forth between the controller 100 and the light- emitting device 150 may be wired or wireless.
  • a schematic block diagram of a luminaire 180 according to an exemplifying embodiment of the present invention.
  • the luminaire 180 comprises a light-emitting device 150 and a controller 100 in accordance with the embodiment described with reference to Fig. 1A for controlling properties of light emitted from the light-emitting device 150.
  • Fig. 2 there is shown a schematic flow diagram of a method of operating a light-emitting device, the light-emitting device comprising a plurality of light sources, each of which is being configured to emit light within a predetermined wavelength range.
  • a user is enabled to select at least one color point of the available color points of light emitted from the light-emitting device by means of a first input.
  • the available color points are based on the wavelength ranges of the respective light sources.
  • a plurality of first settings of the intensities of the plurality of light sources relatively to each other is generated.
  • the plurality of first settings is generated such that each setting of the plurality of first settings when applied to the plurality of light sources, results in that light emitted from the light-emitting device source exhibits the color point that was selected at step 210.
  • the user is enabled to select at least one of the plurality of first settings by means of second user input.
  • the intensities of the plurality of light sources relatively to each other are adjusted on the basis of the second user input provided at step 230, in accordance with the selected at least one setting of the plurality of first settings.
  • the method 200 may comprise a step 215.
  • a second setting of the intensities of the plurality of light sources relatively to each other is generated.
  • the second setting is generated such that the second setting, when applied to the plurality of light sources, results in that the light emitted from the light-emitting device exhibits the color point selected at step 210.
  • the intensities of the plurality of light sources relatively to each other are subsequently adjusted on the basis of the second setting.
  • the second setting of the intensities of the plurality of light sources relatively to each other may be generated such that the color rendering index for the light emitted by the light-emitting device is at a maximum and such that the second setting, when applied to the plurality of light sources, results in that the light emitted from the light-emitting device exhibits the color point selected at step 210.
  • the second setting of the intensities of the plurality of light sources relatively to each other may be generated such that the difference between the contributions to the total luminous flux of the light- emitting device from each light source is at a minimum and such that the second setting, when applied to the plurality of light sources, results in that the light emitted from the light- emitting device exhibits the color point selected at step 210.
  • the step 220 may optionally comprise a step 222, comprising enabling the user to select at least one of the wavelength ranges associated with the respective light sources and generating the plurality of first settings of the intensities of the plurality of light sources relatively to each other under the constraint of keeping the intensity of the light source associated with the selected at least one wavelength range constant and/or different from zero.
  • a step 224 may be performed, comprising generating the plurality of first settings of the intensities of the plurality of light sources relatively to each other such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the flux of the light emitted by the light-emitting device is at a maximum and/or the efficiency of the light-emitting device is at a maximum.
  • the plurality of first settings of the intensities of the plurality of light sources relatively to each other may be generated such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the color rendering index for the light emitted by the light-emitting device is at a maximum.
  • the plurality of first settings of the intensities of the plurality of light sources relatively to each other may be generated such that, when each setting of the plurality of first settings is applied to the plurality of light sources, the difference between the contributions to the total luminous flux of the light-emitting device from each light source is at a minimum.
  • the method 200 may comprise a step 226.
  • Step 226 comprises detecting a change in at least one operation parameter of a respective light source, by comparing the at least one operation parameter with a previous value of at least one operation parameter of the respective light source.
  • the step 226 further comprises, on a condition that a change is detected, generating a new at least one operation parameter for the respective light source on the basis of said change.
  • the new at least one operation parameter is generated such that, when the new at least one operation parameter is applied to the respective light source, the at least one selected color point is approximately maintained or even conserved.
  • the at least one operation parameter of the respective light source is adjusted in accordance with the new at least one operation parameter.
  • the method 200 may comprise a step 235.
  • Step 235 comprises enabling the user to select at least one setting of a stored at least one setting of a plurality of first settings by means of third user input. Subsequently, the intensities of the plurality of light sources relatively to each other are adjusted on the basis of the third user input in accordance with the selected at least one setting of the stored at least one setting of the plurality of first settings.
  • the plurality of light sources of the light-emitting device may according to an embodiment comprise colored LEDs, according to one example LEDs emitting light of color red, green, blue, cyan, amber and white, respectively.
  • the set of available color points can be visualized as the color points situated within an area defined by a polygon in a chromaticity diagram, where each corner (vertex) in the polygon is defined by a color point of a respective colored LED.
  • the user may then select one color point of the available color points, which color point may be situated on or off the BBL.
  • the controller may then adjust the setting of the intensity for at least two light sources relatively to each other in order to maintain the selected color point for light emitted by the light- emitting device.
  • the user may indicate by means of user input on the UI which at least two light sources whose intensities relatively to each other should be adjusted. Subsequently, the user may browse through the resulting settings and select the setting which yields the desired spectra of the light emitted by the light-emitting device.
  • FIG. 3 there are shown schematic views of computer readable (digital) storage mediums 300 according to exemplifying embodiments of the present invention, comprising a Digital Versatile Disc (DVD) 310 and a floppy disk 320.
  • DVD Digital Versatile Disc
  • a computer program comprising computer code adapted to perform, when executed in a processor unit, a method according to the present invention or any embodiment thereof, as has been described in the foregoing.
  • a method and a controller for controlling properties of light emitted from a light-emitting device comprising a plurality of light sources have been disclosed, each of the light sources being configured to emit light within a predetermined wavelength range. The intensities of the plurality of light sources included in the light- emitting device are adjusted by means of two independent steps.
  • a color point of the available color points of light emitted from the light-emitting device is selected.
  • one or more settings for the intensities of the plurality of light sources relatively to each other are selected. The one or more settings are selected from settings, each of which settings, when applied to the plurality of light sources, results in that the light emitted from the light-emitting device exhibits the color point selected in the first step.

Landscapes

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

Abstract

La présente invention concerne un procédé et un dispositif de contrôle destinés à contrôler les propriétés de la lumière émise par un dispositif électroluminescent comprenant une pluralité de sources lumineuses, chacune des sources lumineuses étant configurée pour émettre de la lumière dans une gamme de longueur d'onde prédéterminée. Les intensités de la pluralité de sources lumineuses incluses dans le dispositif électroluminescent sont réglées selon deux étapes indépendantes. Une première étape consiste à sélectionner un point de couleur parmi les points de couleur disponibles de la lumière émise par le dispositif électroluminescent. Une seconde étape consiste à sélectionner un ou plusieurs réglages pour les intensités de la pluralité de sources lumineuses les unes par rapport aux autres. Le ou les réglages sont choisis parmi des réglages, chacun de ces réglages, lorsqu'il est appliqué à la pluralité de sources lumineuses, amenant la lumière émise par le dispositif électroluminescent à afficher le point de couleur sélectionné lors de la première étape.
PCT/IB2010/055573 2009-12-09 2010-12-03 Interface utilisateur pour système à del multicolores permettant de régler indépendamment le point de couleur et le spectre Ceased WO2011070494A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09178475 2009-12-09
EP09178475.1 2009-12-09

Publications (2)

Publication Number Publication Date
WO2011070494A2 true WO2011070494A2 (fr) 2011-06-16
WO2011070494A3 WO2011070494A3 (fr) 2011-08-11

Family

ID=44064204

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/055573 Ceased WO2011070494A2 (fr) 2009-12-09 2010-12-03 Interface utilisateur pour système à del multicolores permettant de régler indépendamment le point de couleur et le spectre

Country Status (1)

Country Link
WO (1) WO2011070494A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012020081A1 (fr) * 2010-08-13 2012-02-16 Zumtobel Lighting Gmbh Ensemble d'éclairage comportant des sources lumineuses de différentes couleurs et procédé de fonctionnement d'un ensemble d'éclairage de ce type
CN105916237A (zh) * 2016-04-15 2016-08-31 上海欧美拉光电股份有限公司 一种led灯遥控控制系统
US20220248512A1 (en) * 2019-07-24 2022-08-04 Osram Gmbh A control device for lighting apparatus, corresponding lighting apparatus, method of operation and computer program product
CN116033638A (zh) * 2023-03-30 2023-04-28 深圳市智岩科技有限公司 灯光控制方法、装置、产品、介质及灯光控制设备
US11943848B2 (en) 2019-08-01 2024-03-26 Signify Holding, B.V. Controller for controlling properties of light

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8174210B2 (en) * 2006-12-12 2012-05-08 Koninklijke Philips Electronics N.V. Illumination system with four primaries
TW200901815A (en) * 2006-12-20 2009-01-01 Koninkl Philips Electronics Nv Lighting device with multiple primary colors
US8189008B2 (en) * 2007-12-13 2012-05-29 Daniel John Julio Color control intuitive touchpad

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012020081A1 (fr) * 2010-08-13 2012-02-16 Zumtobel Lighting Gmbh Ensemble d'éclairage comportant des sources lumineuses de différentes couleurs et procédé de fonctionnement d'un ensemble d'éclairage de ce type
CN105916237A (zh) * 2016-04-15 2016-08-31 上海欧美拉光电股份有限公司 一种led灯遥控控制系统
US20220248512A1 (en) * 2019-07-24 2022-08-04 Osram Gmbh A control device for lighting apparatus, corresponding lighting apparatus, method of operation and computer program product
US11943848B2 (en) 2019-08-01 2024-03-26 Signify Holding, B.V. Controller for controlling properties of light
CN116033638A (zh) * 2023-03-30 2023-04-28 深圳市智岩科技有限公司 灯光控制方法、装置、产品、介质及灯光控制设备

Also Published As

Publication number Publication date
WO2011070494A3 (fr) 2011-08-11

Similar Documents

Publication Publication Date Title
US8766555B2 (en) Tunable white color methods and uses thereof
US9706611B2 (en) Solid state lighting apparatuses, circuits, methods, and computer program products providing targeted spectral power distribution output using pulse width modulation control
US10178723B2 (en) Systems and methods for controlling solid state lighting devices and lighting apparatus incorporating such systems and/or methods
EP2781139B1 (fr) Interrupteurs et appareils d'éclairage à semi-conducteurs fournissant une commande de gradation de lumière et de couleur liées de façon sélective et procédés de fonctionnement
US10264638B2 (en) Circuits and methods for controlling solid state lighting
JP6581500B2 (ja) マルチチャネル白色光照明源のための装置、システム、及び方法
CN105723146B (zh) 用于更好的视觉敏锐度的光谱增强的白光
US9510419B2 (en) Temperature adjusted dimming controller
US9907132B2 (en) Lighting control system for independent adjustment of color and intensity
US8632208B2 (en) Methodology of providing white lighting with colour combination
WO2014136748A1 (fr) Dispositif électroluminescent, procédé de conception d'un dispositif électroluminescent, procédé d'excitation d'un dispositif électroluminescent, procédé d'éclairage et procédé de fabrication d'un dispositif électroluminescent
CN109982478B (zh) 白光发光二极管的调光方法
TW202107940A (zh) 色彩調諧應用之選擇參數
WO2011070494A2 (fr) Interface utilisateur pour système à del multicolores permettant de régler indépendamment le point de couleur et le spectre
JP2007227681A (ja) 発光ダイオードを用いた白色照明装置
WO2017190986A1 (fr) Dispositif de commande de gradation d'intensité lumineuse
US20140210355A1 (en) Methods, circuits and systems for adjusting chromaticity of solid state lighting
CN103703868B (zh) 用于发光器件的控制器
JP2008227490A (ja) 特に手術用顕微鏡のための照明モジュール
US20230358370A1 (en) Improving color rendering accuracy of led lighting device by adding monochromatic light elements
US11363689B2 (en) Method for generating light spectra and corresponding device
US20200100341A1 (en) High Color Quality White Light
JP2020167063A (ja) 照明装置
CN102640566B (zh) 用于产生多色光辐射的发光二极管发光装置
WO2014165450A1 (fr) Circuits et procédés de contrôle d'éclairage à l'état solide

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10798399

Country of ref document: EP

Kind code of ref document: A2