Color control of dynamic lighting

Abstract

This invention relates to a method of adjusting the fixture color emitted by a first and a second lighting fixture to a target color, each lighting fixture comprising at least a first and a second light source emitting light having different source colors, and said fixture color is obtained as a combination of said source colors, and said fixture color can be varied by varying the intensity of each light source; where the adjusting of said fixture color to a target color is performed by varying the intensity of said light sources based on both a first color gamut and a second color gamut respectively described by said source colors from said first lighting fixture and said second lighting fixture. The invention further relates to a light adapter and light system for adjusting the fixture color emitted by a first and a second lighting fixture to a target color and to a computer-readable medium having stored therein instructions for causing a processing unit to execute said method.

1 . A method of adjusting the fixture color ( 105 ) emitted by a least a first and a second lighting fixture ( 101 ,  101   a,    101   b,    101   c,    101   n ) to a target color, each lighting fixture comprising at least a first and a second light source ( 102 ,  103 ,  104 ) emitting light having different source colors, and said fixture color is obtained as a combination of said source colors, and said fixture color can be varied by varying the intensity of each light source and the adjusting of said fixture color to a target color is performed by varying the intensity of said light sources, which comprises varying said intensity of said light sources based on both a first color gamut ( 401 ) and a second color gamut ( 402 ,  403 ) respectively described by said source colors from said first lighting fixture and said second lighting fixture, 
     
     
         2 . A method according to  claim 1  which further comprises the step of obtaining color parameters describing the color of said first and second source colors of said first and second lighting fixtures as a source position ( 210 ,  211 ,  212 ,  213 ,  214 ,  215 ) on a color map and generating said color gamut using said color parameters. 
     
     
         3 . A method according to  claim 1  which further comprises the step of choosing said target color as a position on said color map. 
     
     
         4 . A method according to  claim 1  wherein said adjusting of said fixture color to a target color by varying the intensity of said light sources is based on a common color gamut ( 404 ,  405 ,  406 ) generated by combining said first and second color gamut. 
     
     
         5 . A method according to  claim 1  wherein said step of adjusting the fixture color comprises the step of adjusting said target color such that the position of said target color in said color map would be a part of said common color gamut ( 404 ,  405 ,  406 ). 
     
     
         6 . A method according to  claim 2  wherein said color parameters further comprise the intensity range of said light sources. 
     
     
         7 . A method according to  claim 2  wherein said color map is a CIE color map ( 407 ). 
     
     
         8 . A light adapter ( 301 ,  701 ) for adjusting the fixture color emitted by at least a first and a second lighting fixture ( 101 ,  101   a,    101   b,    101   c,    101   n ) to a target color, each lighting fixture comprising at least a first and a second light source ( 102 ,  103 ,  104 ) emitting light having different source colors, and said fixture color ( 105 ) is obtained as a combination of said source colors, wherein said light adapter comprises means ( 304 ,  305 ) for adjusting said fixture color to a target color by varying the intensity of said light sources, and wherein said light adapter comprises means ( 304 ,  305 ) for varying the intensity of said light sources based on both a first color gamut and a second color gamut respectively described by the source colors from said first lighting fixture and said second lighting fixture. 
     
     
         9 . A light adapter according to  claim 8  wherein said light adapter further comprises means for obtaining color parameters describing the color of said first and second source colors of said first and second lighting fixtures as a source position on a color map and means for generating said color gamut using said color parameters. 
     
     
         10 . A light adapter according to  claim 8  wherein said light adapter further comprises means for choosing ( 702 ,  703 ,  704   705 ,  706 , 707 ) said target color as a position on said color map. 
     
     
         11 . A light adapter according to  claim 8  said means for adjusting said fixture color to a target color is adapted to vary the intensity of said light sources based on a common color gamut and in that said light adapter comprises means for generating said common color gamut by combining said first and second color gamut. 
     
     
         12 . A light adapter according to  claim 8  wherein said means for adjusting said fixture color comprises means for adjusting said target color such that the position of said target color in said color map would be a part of said common color gamut. 
     
     
         13 . A light adapter according to  claim 9  wherein said color parameters further comprise the intensity rang of said light sources. 
     
     
         14 . A light adapter according to  claim 9  wherein said color map is a CIE color map. 
     
     
         15 . A lighting system comprising a number of lighting fixtures ( 101 ) where said lighting fixtures comprise at least two light sources ( 102 ,  103 ,  104 ) each emitting a source color, and where said dynamic lighting fixtures are adapted to combine said source colors and thereby generate a fixture color ( 105 ) and the color of said fixture color can be varied by varying the intensity of said source colors wherein said lighting system further comprises a light adapter ( 101 ,  701 ) according to  claim 8  and wherein said light adapter is adapted to adjust said fixture color emitted by a number of lighting fixtures to a target color. 
     
     
         16 . A lighting system according to  claim 15  wherein said number of lighting fixtures and said light adapter are connected to a network ( 302 ), 
     
     
         17 . A lighting system according to  claim 16  wherein said means for obtaining said color parameters comprised by said light adapter are adapted to obtain said color parameters through said network. 
     
     
         18 . A lighting system according to  claim 16  wherein said means for adjusting said fixture color of said lighting fixtures comprised by said light fixture are adapted to adjust said fixture color through said network. 
     
     
         19 . A computer-readable medium having stored therein instructions for causing a processing unit to execute a method according to  claim 1 .