Color mixing method for variable color lighting and variable color luminaire for use with the method
First Claim
1. A color mixing method for variable color lighting, wherein first to third light sources of mutually different emission colors are prepared, another light source of another emission color the chromaticity coordinates of which are disposed within a figure drawn on a chromaticity diagram by connecting respective chromaticity coordinates of emission colors of a plurality of light sources including said first to third light sources is prepared, a temporary light source is imaginarily set by mixing said emission color of one of said plurality of light sources including the first to third light sources with said another emission color of said another light source, a mixing ratio of the emission colors of at least two remaining light sources in said plurality of light sources including the first to third light sources and of said temporary light source is calculated, and a further mixing ratio of required emission colors of the respective light sources for obtaining a mixed color light which draws a desired locus on said chromaticity diagram is obtained on the basis of said mixing ratio calculated.
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Abstract
A variable color lighting arrangement includes at least first to third light sources and at least another light source, and allows a desired mixed color light to be obtained in a relatively simpler manner, such that an emission color of a temporary light source is first imaginarily set with an emission color of one of the first to third light sources mixed with another emission color of the said another light source, a mixing ratio is calculated with emission colors of remaining two or more of the plurality of light sources including at least the first to third light sources and the emission color of the temporary source, and a required mixing ratio of the respective light sources for obtaining the desired mixed color light is obtained on the basis of the calculated mixing ratio.
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14 Claims
- 1. A color mixing method for variable color lighting, wherein first to third light sources of mutually different emission colors are prepared, another light source of another emission color the chromaticity coordinates of which are disposed within a figure drawn on a chromaticity diagram by connecting respective chromaticity coordinates of emission colors of a plurality of light sources including said first to third light sources is prepared, a temporary light source is imaginarily set by mixing said emission color of one of said plurality of light sources including the first to third light sources with said another emission color of said another light source, a mixing ratio of the emission colors of at least two remaining light sources in said plurality of light sources including the first to third light sources and of said temporary light source is calculated, and a further mixing ratio of required emission colors of the respective light sources for obtaining a mixed color light which draws a desired locus on said chromaticity diagram is obtained on the basis of said mixing ratio calculated.
- 7. A variable color luminaire, comprising first to third light sources of mutually different emission colors, another light source of another emission color the chromaticity coordinates of which are disposed within a figure drawn in a chromaticity diagram by connecting respective chromaticity coordinates of said emission colors of a plurality of light sources including said first to third light sources, means for imaginarily setting a temporary light source by mixing said emission color of one of said plurality of light sources including the first to third light sources with said another emission color of said another light source, means for calculating a mixing ratio of the emission colors of at least two remaining light sources in said plurality of light sources including the first to third light sources and of said temporary light source, and means for obtaining a further mixing ratio of required emission colors of the respective light sources for obtaining a mixed color light which draws a locus on said chromaticity diagram on the basis of said mixing ratio calculated.
Specification