Method and lighting system with adaptive color control

Abstract

A method for controlling a plurality of color light sources is provided. The method comprises receiving (2010) a reference light scene, the reference light scene comprising a color setting of at least one light source. The method further includes determining (2020) a position of the user relative to the plurality of color light sources. The method further comprises determining (2030) a subset of the plurality of color light sources arranged to illuminate the location of the user. The method further comprises determining (2040) a desaturation light setting for at least one color light source in the determined subset; and controlling (2050) the plurality of color light sources based on the reference light scene, wherein at least one color light source in the determined subset is controlled according to the determined desaturation light setting.

Description

Technical Field

[0001] The present disclosure relates generally to the field of lighting. In particular, it relates to a method and system for providing an adaptive color light scene. Background Art

[0002] Over the past few decades, the development of lighting systems has accelerated. Instead of providing only lighting, new lighting solutions can provide activity-based lighting, lighting that sets a mood or atmosphere, or even lighting that encourages a normal circadian rhythm. Many new solutions involve the use of colored lighting. Colored lighting can be used to create an atmosphere or enhance an entertainment experience, such as watching a movie or playing a video game. While colored light can enhance the experience, it has been shown that in some cases, the use of colored lighting can make the user uncomfortable. Summary of the invention

[0003] It is therefore an object of the present invention to overcome at least some of the above disadvantages and to provide an improved control method and lighting system.

[0004] This and other objects are achieved by means of a method for controlling a plurality of colored light sources and a lighting system as defined in the appended independent claim.The dependent claims define further embodiments.

[0005] According to a first aspect of the present disclosure, a method for controlling a plurality of colored light sources is provided. The method includes receiving a reference light scene, the reference light scene including a color setting of at least one light source. The method further includes determining a position of a user relative to the plurality of colored light sources. The method further includes determining a subset of the plurality of colored light sources arranged to illuminate the determined position of the user. The method further includes determining a desaturated light setting for at least one colored light source in the determined subset. The method further includes controlling the plurality of colored light sources based on the reference light scene, wherein at least one colored light source in the determined subset is controlled according to the determined desaturated light setting.

[0006] In order to create a prominent colored light environment and immersive entertainment (content-based) light scene, many different colored light sources can be used. Increasing the number of colored light sources can increase the diversity of possible light scenes. However, user studies have shown that people like to look at surfaces illuminated by colored light, but they do not like to see other users illuminated by colored light or place themselves in a colored light effect.

[0007] The method and system of the present disclosure can provide a dynamically adjustable light scene based on the user's location. Such an adjustable light scene can provide a brightly colored illumination as ambient light while still providing a desaturated (whiter) light directed toward the user and / or near the user.

[0008] For example, if no one is sitting at a table illuminated by one or more table lamps, the table lamps may present a colorful ambient light setting. As a user approaches the table, the table lamps may promptly adjust the colored light output to a whiter, more desaturated light setting.

[0009] One use of colored light scenes is to improve the entertainment experience. For example, when watching a movie or playing a video game on a display, the lighting system can illuminate the area around the display based on the color of the content shown on the display. This use of colored lighting can increase the user's experience of being a part of the movie or game. Using the methods and systems provided in the present disclosure, an improved content immersion effect can be created around one or more viewers / players without exposing the user(s) to direct colored light.

[0010] Color light scenes can also be used to create dynamic lighting effects using dynamic light scenes. For example, the lights of a lighting system can slowly change color based on a scene selected by a color palette. This dynamic lighting effect can create a more vibrant atmosphere.

[0011] A plurality of colored light sources may form part of a connected lighting system. Throughout this disclosure, a plurality of colored light sources may be referred to as light sources. Although this disclosure primarily relates to the control of colored light sources, it is to be appreciated that the methods and apparatus / systems provided herein may further include white light sources.

[0012] The color light source may be a variable color light source or a monochromatic light source. For a variable color light source, the desaturated color light setting may include a color setting for providing a whiter variant of the color. For a monochromatic light source, the desaturated color light setting may include a setting for providing a lower light intensity.

[0013] A light scene may comprise a setup of multiple light sources. A colored light scene may comprise a setup of multiple colored light sources, including a color setup of at least one light source.

[0014] The reference color light scene (or requested / initial light scene) may be determined, for example, by a user. The reference color light scene may include a desired light scene for, for example, a room or area. A plurality of color light sources may be controlled based on the reference color light scene suitable for the location of at least one user. For example, a plurality of color light sources may be controlled according to the determined light scene. The determined light scene may be based on the reference color light scene and include the determined desaturated light setting.

[0015] The subset of light sources may include at least one colored light source, the position and / or orientation of the at least one colored light source may result in the light source being arranged to illuminate the determined position of the user. According to the methods / systems disclosed herein, at least some of the light sources in the subset of colored light sources may be controlled using a desaturated light setting.

[0016] The desaturation level of a light source / light setting is related to the intensity of the color of the light emitted by the light source. A more desaturated light source provides whiter light, while a more saturated (less desaturated) light source provides more intense colored light. A completely desaturated light source may provide white light.

[0017] According to some embodiments, the desaturated light setting may be determined based on one or more corresponding color light settings defined for a subset of the plurality of color light sources in a reference light scene.

[0018] A desaturated light setting may be determined for each of the subset of one or more determined colored light sources. For example, a desaturated light setting may be determined for the colored light sources in the subset based on a color light setting defined for the colored light sources in a reference light scene.

[0019] In accordance with some embodiments, determining a desaturated light setting for at least one colored light source in the determined subset may include determining a desaturation level of the desaturated light setting for at least one light source in the determined subset of colored light sources based on at least one of: a distance between the light source and a user's position; an orientation of the light source relative to the user's position; and a type of the light source.

[0020] For example, a light source that is disposed farther from the user may have a lower desaturation level than a light source that is disposed closer to the user.

[0021] A light source arranged to provide light in a direction towards a user location may require a higher level of desaturation than a corresponding light source arranged to provide light in a direction away from the user.

[0022] As a further example, a spotlight that is configured to provide directional light and is often used as a functional light source may require a higher desaturation level than, for example, a light strip that is configured and / or arranged to provide diffuse / ambient lighting.

[0023] Different characteristics of desaturation may be customizable. These characteristics may be adapted based on user preferences. In some embodiments, these characteristics may be indicated or included in the reference light scene.

[0024] The desaturation level may be customizable. For example, a first user may prefer a higher desaturation level, and a second user may prefer a lower desaturation level. The user (ie, first or second user) may be indicated in the reference light scene, or otherwise indicated or identified.

[0025] In addition, the speed of desaturation can also be customizable to provide smooth and slow changes in desaturation, or faster, more adaptable changes. The speed of desaturation can also depend on the dynamic scene settings of the dynamic light scene. For example, the speed of desaturation can depend on the speed of color transitions in the dynamic light scene.

[0026] The range of desaturation, i.e. the area over which the light is desaturated, may also be customizable.

[0027] In addition, some colors may be more saturated than other colors. For example, cooler colors (such as green / blue) may provide a less pleasant look or feel to the person being illuminated than warmer colors (e.g., yellow or orange). Therefore, cooler colors may be more desaturated than warmer colors.

[0028] According to some embodiments, determining the desaturated light setting for at least one colored light source in the determined subset may further include determining a color range of the reference light scene.Determining the desaturated light setting for at least one colored light source in the determined subset may further include determining a white point of the desaturated light setting based on the determined color range.

[0029] For example, the white point of the desaturation can depend on the total gamut of colors rendered by the colored light source. For example, when the colors rendered by the other lights in the entertainment setting are primarily warm colors (e.g., providing more yellow tints / red tints), the white point of the desaturated light source can be adjusted accordingly. In this case, the desaturation can be adjusted to a color temperature of, for example, 2000K or 2700K. Alternatively, when the colors of the other lights (light sources) are cooler (e.g., providing a bluish tint), the white point may be closer to 5000K or 6500K.

[0030] As an alternative, the preferred white point of desaturation may be selected by the user or defined in a reference color light scene.In addition, the method or lighting system may define a neutral color temperature white point (such as 2700K) for use as a standard setting.

[0031] According to some embodiments, determining the location of the user may include receiving sensor input from at least one sensor. The location of the user may be based on the sensor input.

[0032] For example, the at least one sensor may include at least one of a motion sensor, a camera, a microphone, an RF sensor, etc. The at least one sensor may form part of a (personal) user device such as a smart watch or a phone. The personal user device may further be used to identify the user, for example, to adapt the control of the plurality of colored light sources to personal preferences.

[0033] At least one sensor may be arranged with one of the light sources. For example, a distance sensor may be arranged with the light source. The controller may use measurements from such a distance sensor to determine the distance from the light source to the user.

[0034] According to some embodiments, determining the location of the user may include predicting the future location of the user.

[0035] For example, the control of the plurality of colored light sources may be adjusted in an anticipated manner by predicting the approach or direction of movement of a user. The prediction may be based, for example, on the speed and / or direction of the moving user. The prediction may be based on machine-learned user patterns.

[0036] According to some embodiments, determining the location of the user may include accessing a predefined location of the user.

[0037] For example, the user may indicate one or more typical user positions, such as at a chair or table. Such positions may be predefined, for example, when the system is set up, or when determining / requesting a reference light scene.

[0038] It will be appreciated that determining the user's location may include one or more of the above methods. For example, a predefined location may provide an initial location, one or more sensors may detect changes in location, and future locations may be predicted.

[0039] The predefined, determined and / or predicted user position may be adapted to whether the person is sitting, standing or lying, or to the person's height. For example, the user's position may focus on the position of the user's head. The user's position may be based on an average height of users or adapted to individual users.

[0040] According to some embodiments, the plurality of colored light sources may include at least one colored lighting device.

[0041] Color lighting equipment can be color lamps, color light strips, color panels, etc.

[0042] According to some embodiments, the plurality of colored light sources may comprise a plurality of light nodes forming part of a colored lighting unit.

[0043] A color lighting unit may be a larger color lighting device comprising a plurality of controllable light nodes. For example, a color lighting device may be an LED strip or panel, a display, a lighting panel, etc., with (individually) controllable LEDs (nodes).

[0044] According to a second aspect of the present disclosure, a lighting system is provided. The lighting system includes a plurality of colored light sources. In addition, the lighting system includes a controller. The controller is configured to receive a reference light scene, the reference light scene including a color setting of at least one light source. The controller is further configured to determine a position of a user relative to the lighting system. The controller is further configured to determine a subset of a plurality of light sources arranged to illuminate the position of the user. The controller is further configured to determine a desaturated light setting for at least one colored light source in the determined subset. The controller is further configured to control the plurality of colored light sources based on the reference light scene, wherein at least one colored light source in the determined subset is controlled according to the determined desaturated light setting.

[0045] The lighting system can communicate wirelessly. Some or all devices within the lighting system can be connected by wires (and communicate via wires).

[0046] According to some embodiments, the controller may be further configured to determine the desaturated light setting based on one or more corresponding color light settings defined for a subset of the plurality of color light sources in the reference light scene.

[0047] In accordance with some embodiments, the controller may be further configured to determine a desaturation level of a desaturation light setting for at least one light source in the determined subset of light sources based on at least one of: a distance between the colored light source and the user's position, an orientation of the colored light source relative to the user's position, and a type of the colored light source.

[0048] According to some embodiments, the controller may be further configured to determine a color range of the reference light scene.The controller may be further configured to determine a white point of the desaturated light setting based on the determined color range.

[0049] According to some embodiments, the system may further include at least one sensor in communication contact with the controller. The controller may be further configured to receive sensor input from the at least one sensor. The controller may be further configured to determine the location of the user based on the sensor input.

[0050] According to some embodiments, the controller may be further configured to predict a future location of the user. According to some embodiments, the controller may be configured to determine the location of the user based on accessing predefined locations of the user.

[0051] According to some embodiments, the plurality of light sources may include at least one colored lighting device. The controller may be configured to at least control the light output of the colored lighting device. For example, the controller may be configured to control the intensity and / or color of the light emitted by the colored lighting device.

[0052] According to some embodiments, the plurality of light sources may include a plurality of light nodes forming part of a colored lighting unit. The controller may be configured to control at least the light output of each light node. For example, the controller may be configured to control the intensity and / or color of the light emitted by each light node. The controller may be configured to control each light node independently, or there may be a correlation between at least some of the light nodes.

[0053] It will be appreciated that although some features are described in more detail with reference to the first aspect or the second aspect, equivalent features may apply to the other aspects. For example, a controller of the lighting system may be configured to perform an embodiment of the method as described with reference to the first aspect. Furthermore, the method of the first aspect may employ an embodiment of the system as described with reference to the second aspect.

[0054] It is also noted that other embodiments can be envisaged using all possible combinations of the features listed in the above embodiments. Therefore, the present disclosure also relates to all possible combinations of the features mentioned herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Exemplary embodiments will now be described in more detail with reference to the following accompanying drawings:

[0056] Figure 1 is a schematic illustration of a lighting system according to some embodiments;

[0057] Figure 2 is a flow chart illustrating a method for controlling a plurality of colored light sources according to some embodiments;

[0058] Figure 3 is a diagram of an indoor lighting system according to some embodiments;

[0059] Figure 4 is an illustration of a lighting system forming part of an entertainment setting according to some embodiments;

[0060] Figure 5 and Figure 6 A lighting system including a colored lighting unit according to some embodiments is shown.

[0061] As shown in the figures, the sizes of elements and regions may be exaggerated for illustrative purposes and, therefore, are provided to illustrate the general structure of the embodiments. Like reference numerals refer to like elements throughout. DETAILED DESCRIPTION

[0062] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; on the contrary, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to the skilled person.

[0063] In the following figures, similar features, elements and / or functions may be shown in more than one figure. To avoid repetition, certain features, elements and / or functions may be described in more detail with reference to only one figure. These features are identified by reference numerals consisting of the number of the figure to which they are related followed by the number of the feature, which numbers are identical for all exemplary embodiments, for example, a common feature "10" is shown in Figure 1 In the figure, the corresponding feature is indicated by "110", while the corresponding feature is in Figure 2 Indicated by "210" in the

[0064] refer to Figure 1 , a lighting system 100 according to some embodiments will be described.

[0065] The lighting system 100 includes a plurality of colored light sources 102a-f and a controller 104. The controller 104 may be configured to use a control method (such as described below with reference to Figure 2 The method 2000 described herein is used to control multiple light sources 102a-f.

[0066] The plurality of light sources 102a-f include different types of light sources, such as spotlights 102a, ceiling pendant lights 102e and table lamps 102f. The plurality of light sources also include a plurality of light nodes 102b-d in the form of light emitting diodes (LEDs) forming part of a lighting unit 106 in the form of LED strips.

[0067] The lighting system 100 also includes a plurality of sensors 108. The plurality of sensors 108 may be configured to send sensor inputs to the controller 104. The controller 104 may detect the presence of a user based on the inputs from the sensors 108. The controller 104 may determine the position of the user relative to one or more light sources based on the sensor inputs.

[0068] exist Figure 1 , the lighting system 100 includes a personal user device 110 in the form of a mobile phone. The controller 104 may be implemented in the mobile phone 110. Alternatively or additionally, the user may use the personal user device (mobile phone) 110 to provide input to the lighting system 100. For example, the user may use the personal user device 110 to provide, indicate or determine a reference lighting scene. The personal user device 110 may also communicate with the sensor 108. For example, the controller 104 and the sensor 108 may determine the location of the user based on the location of the personal user device 110.

[0069] exist Figure 1 In the lighting system 100 shown in FIG. 1 , the controller 104 wirelessly communicates with the light sources 102a-f, the sensor 108, and the personal user device 110. However, in other embodiments, some of the devices in the lighting system 100 may be connected by wires and communicate via the wires.

[0070] refer to Figure 2 , a method 2000 for controlling a plurality of colored light sources will be described.

[0071] The method 2000 may be implemented, for example, in a controller of a lighting system (such as the one referenced above). Figure 1 The controller 104 of the lighting system 100 described above is implemented in the controller 104 of the lighting system 100 described above.

[0072] The method 2000 comprises receiving a reference light scene at step 2010. The reference light scene comprises a color setting of at least one light source. The reference light scene may comprise a separate setting for each of a plurality of light sources in a setup. Alternatively, one or more light sources may be linked such that there is a correlation between their light settings. The light settings may comprise a color setting and / or an intensity setting defining the light output of the light source. The light settings of the light source may comprise that the light source should be turned off. The reference light scene may be received from a user via a user interface. The user interface may, for example, form part of a personal user device.

[0073] Method 2000 further includes, at step 2020, determining a position of the user relative to the plurality of colored light sources. In some embodiments, the method may include, at step 2022, receiving a position of the user relative to the plurality of colored light sources from at least one sensor (such as the one described above with reference to FIG. Figure 1 In some embodiments, the method may include predicting a future location of the user at step 2024. In some embodiments, the method may include accessing a predefined location of the user at step 2026. It will be appreciated that the determination 2020 of the location of the user may include one or more of receiving sensor input 2022, predicting a future location 2024, and accessing a predefined location 2026.

[0074] When the position of the user has been determined, the method includes, in step 2030, determining a subset of light sources arranged to illuminate the position of the user. For example, the subset of light sources may include light sources arranged near the position of the user. The subset of light sources may include light sources arranged farther away from the user, but arranged to direct light in a direction toward the user. The determination 2030 of the subset of light sources may, for example, be based on at least one of the position of the light sources, the type of light sources, and the orientation of the light sources. In addition, the determination 2030 of the subset of light sources may take into account a reference light scene. For example, the subset may include only light sources for which light settings are provided in the reference light scene. Alternatively, the subset may also include other light sources for which light settings are not provided in the reference light scene.

[0075] The method 2000 further comprises determining 2040 a desaturation light setting for at least one colored light source of the subset of light sources determined in step 2030. The desaturation light setting of the at least one light source may, for example, be based on light settings of colored light sources in the reference light scene.

[0076] In some embodiments, the step of determining 2040 a desaturated light setting may include determining 2044 a desaturation level of the desaturated light setting for at least one light source in the subset of colored light sources. In step 2042, the method may include obtaining (accessing or determining) information based on which the desaturation level of the desaturated light setting for the light source in question is determined 2044. For example, the information obtained in step 2042 may include a distance between the light source in question and the user's location. The information obtained in step 2042 may include an orientation of the light source relative to the user's location. Alternatively or additionally, the information obtained in step 2042 may include a type of the light source in question. Furthermore, the desaturation level may be based on a known (predefined) preference of the user.

[0077] Furthermore, the determination 2040 of the desaturated light setting may further include determining 2046 a color range (or color gamut) of the reference light scene. A white point of the desaturated light setting may be determined 2048 based on the determined color range.

[0078] The method 2000 further comprises controlling 2050 a plurality of light sources based on the reference light scene received in step 2010, wherein at least one color light source in the determined subset is controlled according to the desaturated light setting determined in step 2040. Figure 2 As shown in , method 2000 may then return to step 2020 to determine the new position of the user. Alternatively, the method may restart at step 2010 upon receiving a new reference light scene.

[0079] refer to Figure 3 , an example of a lighting system 300 will be described.

[0080] Figure 3 3 is a schematic illustration of a user 330 surrounded by different light sources (illuminators) 302a-e of a lighting system 300. The lighting system 300 may be equivalent to the lighting system 300 described above with reference to Figure 1 The lighting system 100 described above. The lighting system 300 can be used with reference to Figure 2 2000. A user 330 is holding a personal user device 310 in the form of a mobile phone or tablet. The personal user device 310 may act as an input device for the lighting system 300, with which the user 330 may provide input or settings to the lighting system 300. The personal user device 310 may include a controller (not depicted) of the lighting system 300. The personal user device 310 may interact with sensors (not depicted) of the lighting system 300 for determining the user's location.

[0081] The lighting system 300 includes three ceiling lamps 302a-c and two table lamps 302d-e. For illustrative purposes, the lighting devices 302a-e are shown as providing uniform light in all directions. The lighting provided by each of the lighting devices 302a-e is shown by circles 326a-e concentric with the lighting devices 302a-e.

[0082] The user 330 is sitting to the right of the center ceiling light 302b. The illumination circles 326b, 326c and 326e corresponding to the light provided by the center and right ceiling lights 302b, 302c and the right table lamp 302e intersect the user 330. The subset of light sources arranged to illuminate the user's position can therefore include the center and right ceiling lights 302b, 302c and the right table lamp 302e. When controlled according to any method described throughout the present disclosure, the center and right ceiling lights 302b, 302c and the right table lamp 302e can be provided with a desaturated light setting. The left table lamp 302d and the left ceiling lamp 302a that are not arranged to illuminate the user 330's position can each be provided with a light setting with a constant saturation level compared to the reference light scene.

[0083] Furthermore, person (user) 330 is sitting closer to center ceiling light 302b than to right ceiling light 302c and right table lamp 302e. The desaturation level of each light source may be determined (in part) based on the distance between the light source and the user's position. Thus, center ceiling light 302b may have a higher desaturation level than right ceiling light 302c and right table lamp 302e.

[0084] Generally, users do not like colored light shining on their faces. Therefore, the position of the user may take into account the position of the head of the user 330. For example, the determination of the user's position may take into account the height of the user or the average height of the user.

[0085] refer to Figure 4 , the lighting system 400 will be described.

[0086] Figure 4 A room is shown with chairs 422 and an entertainment setup 424. The entertainment setup 424 is schematically shown with a TV screen and a pair of speakers on a bench.

[0087] The room also includes a lighting system 400. The lighting system 400 may be identical to any of the lighting systems 100, 300 described above with reference to the previous figures. The lighting system 400 may be identical to any of the lighting systems 100, 300 described above with reference to the previous figures. Figure 2The lighting system 400 includes a plurality of color light sources, which include a plurality of color lighting devices 402a-f and two color lighting units 406a-b. The lighting system 400 also includes a plurality of sensors 408 for detecting and determining the position of a user in a room 420. The controller of the lighting system 400 is not Figure 4 Shown in.

[0088] In such Figure 4 In the entertainment setting shown in , the user will most likely be located in chair 422 when watching TV, playing video games, etc. Therefore, chair 422 can be registered / identified in lighting system 400 as a predefined user position.

[0089] exist Figure 4 , lighting devices 402a-f are arranged at different distances from chair 422. One lighting device 402b is arranged close to chair 422. Two middle lighting devices 402a and 402d are arranged slightly further away, and three furthest distance lighting devices 402c, 402e, and 402f are arranged the farthest away. Figure 4 In the illustration in FIG. 4 , a table lamp 402 f adjacent to an entertainment setting 424 provides light of a different color than the other lighting devices 402 a - e and lighting units 406 a , 406 b .

[0090] When controlled according to the methods described in the present disclosure, the lighting device 402b closest to the chair may have a first desaturation level. The middle lighting devices 402a and 402d may have a lower second desaturation level. The three furthest distance lighting devices 402c, 402e, and 402f may be even less desaturated than lighting device 402e, or not desaturated at all.

[0091] exist Figure 4 , the light output of lighting units 406a, 406b is also adapted to the position of the user, i.e., chair 422. Lighting units 406a, 406b each include a plurality of light nodes. For example, lighting units 406a-b may be LED strips, each of which includes a plurality of LEDs. Light nodes that are closer to the predefined position of the user and are therefore arranged to more strongly illuminate the user are more desaturated than light nodes that are further away from the user (or chair 422). The desaturation levels of the light nodes may be adapted to form a desaturation gradient over lighting units 406a-b.

[0092] refer to Figure 5 and Figure 6 , a lighting system 500 including lighting panels 506, 606 will be described.

[0093] Figure 5 and Figure 6The lighting system may be equivalent to any one of the lighting systems 100, 300, 400 described above with reference to the previous figures. In addition, Figure 5 and Figure 6 The lighting system can be used as referenced above Figure 2 Method 2000 is described for controlling.

[0094] The lighting panel 506 includes a plurality of lighting nodes 502. Figure 5 5, the lighting panel is illuminated with a gradient color, such that the lighting nodes 502 in the first region 528a of the lighting panel 506 are illuminated with a first color. The lighting nodes 502 in the second region 528b are illuminated to form a gradient between the first color and the second color from left to right. The lighting nodes 502 in the third region 528c are illuminated with a second color.

[0095] Each lighting node 502 can be controlled by a light setting. The light setting of each lighting node 502 can be part of a light scene. Figure 5 In the example, no user is present, so the light panel 506 may be illuminated according to the reference light scene.

[0096] exist Figure 6 , the same light panel 606 is shown. However, in Figure 6 In FIG. 6 , user 630 is walking in front of light panel 606. Therefore, the light output of light panel 606 has been adapted to the position of user 630. Furthermore, user 630 is walking along light panel 606 at speed v, from right to left in the picture. The lighting system can thus predict the future position 632 of the user. Figure 6 , the light output of the light panel 606 is based on Figure 5 . In addition, the light scene (light setting for color light node) used to control the light panel 606 has been adapted based on the current position 630 of the user and the future position 632 of the user. As a result, the light panel is divided into five areas. The first area 628a is illuminated according to the reference light scene. The second area closer to the user 630 and the future position 632 of the user is illuminated to form a desaturation gradient, wherein the closer to the user 630 and the future position 632 of the user, the more desaturated. The third area 628c is centered on the user 630 and the future position 632 of the user. In the third area, the light output of the panel is the most desaturated. In this example, the most desaturated light is white light, which has a white point determined based on the color range of the reference light scene. Behind the user 630, in the fourth area 628d, the panel is illuminated to form a desaturation gradient, wherein the saturation increases in the direction away from the user. In the fifth area 628e, the lighting panel is illuminated according to the reference light scene.

[0097] As the user 630 moves along the lighting panel 606 , the boundaries of the desaturated regions 628 b - d may move with the user 630 .

[0098] Those skilled in the art realize that the present invention is by no means limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.

[0099] Although features and elements are described above in particular combinations, each feature or element may be used alone without the other features and elements or in various combinations with or without the other features and elements.

[0100] Additionally, variations to the disclosed embodiments may be understood and effected by those skilled in the art in practicing the claimed invention, by studying the drawings, the disclosure and the appended claims. In the claims, the word "comprising" does not exclude other elements, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain features are recited in mutually different dependent claims does not indicate that a combination of these features cannot be used to advantage.

Claims

1. A method (2000) for controlling a plurality of colored light sources (102a-f), the method comprising: receiving (2010) a reference light scene, the reference light scene comprising a color setting of at least one colored light source; determining (2020) a position of a user (330) relative to the plurality of colored light sources; determining (2030) a subset (302b, 302c, 302e) of the plurality of colored light sources arranged to illuminate a location of a user; determining (2040) a desaturated light setting for at least one colored light source in the determined subset, wherein the desaturated light setting is determined based on one or more corresponding color light settings defined for the subset of the plurality of colored light sources in the reference light scene; and The plurality of colored light sources are controlled (2050) based on the reference light scene, wherein at least one colored light source in the determined subset is controlled according to the determined desaturated light setting.

2. The method of claim 1 , wherein determining a desaturated light setting for at least one colored light source in the determined subset further comprises determining ( 2044 ) a desaturation level of the desaturated light setting based on at least one of: a distance between the at least one colored light source and a position of the user; an orientation of at least one colored light source relative to a position of a user; and At least one type of colored light source.

3. The method of claim 1 , wherein determining a desaturated light setting for at least one colored light source in the determined subset further comprises: determining (2046) a color range of the reference light scene; and A white point of the desaturated light setting is determined (2048) based on the determined color range.

4. The method according to any one of claims 1 to 3, wherein determining the location of the user comprises: receiving (2022) sensor input from at least one sensor (108); and A location of a user is determined based on the sensor input.

5. The method of any of claims 1-3, wherein determining the location of the user comprises predicting (2024) a future location (632) of the user.

6. The method of any of the preceding claims, wherein determining the location of the user comprises accessing (2026) a predefined location (422) of the user.

7. A method according to any of the preceding claims, wherein the plurality of light sources comprises at least one colored lighting device (102a, 102e, 102f) and / or a plurality of light nodes (102b-d) forming part of a colored lighting unit (106).

8. A lighting system (100), comprising: a plurality of colored light sources (102a-f); and A controller (104) configured to: receiving a reference light scene, the reference light scene comprising a color setting of at least one colored light source; determining a position of a user (330) relative to the lighting system; determining a subset of the plurality of colored light sources arranged to illuminate a location of a user (302b, 302c, 302e); determining a desaturated light setting for at least one colored light source in the determined subset; and controlling the plurality of colored light sources based on the reference light scene, wherein at least one colored light source in the determined subset is controlled according to the determined desaturated light setting; Wherein the controller is further configured to determine the desaturated light setting based on one or more corresponding color light settings defined in the reference light scene for a subset of the plurality of colored light sources.

9. The lighting system of claim 8, wherein the controller is further configured to determine a desaturation level of the desaturated light setting based on at least one of: a distance between the at least one colored light source and a position of the user; an orientation of at least one colored light source relative to a position of a user; and At least one type of colored light source.

10. The lighting system according to claim 8, wherein the controller is further configured to: determining a color range of the reference light scene; and A white point of the desaturated light setting is determined based on the determined color range.

11. The lighting system according to any one of claims 8 to 10, further comprising at least one sensor in communication contact with the controller, wherein the controller is further configured to: receiving sensor input from the at least one sensor; and A location of a user is determined based on the sensor input.

12. The lighting system according to any of claims 8-10, wherein the controller is further configured to predict a future location (632) of the user and / or to determine the location of the user based on visiting a predefined location (422) of the user.

13. The lighting system according to any one of claims 8-12, wherein the plurality of light sources comprises at least one color lighting device (102a, 102e, 102f) and / or a plurality of light nodes (102b-d) forming part of a color lighting unit (106).

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