US 2019/0162377 A1Published application

Method for realizing fast color mixing of any colors

AssigneeGuangzhou Yajiang Photoelectric Equipment Co., Ltd.

InventorZhiman Chen

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Abstract

A method for realizing fast color mixing of any colors is disclosed. When the number of colors to be mixed is three, the first illuminance ratio between the three colors to be mixed that required for obtaining the target color is calculated. When the number of colors to be mixed exceeds three, the mixed color of other colors except the first and second color is determined firstly according to a settled second illuminance ratio between other colors except for a first and a color, then a third illuminance ratio between the first color, the second color and the mixed color of other colors except for the first and second color for obtaining the target color is calculated. This method can quickly determine the first illuminance ratio between three or more colors to be mixed according to the target color and the illuminance ratio of certain mixed color.

Claims8

Dependent claims

A method for realizing fast color mixing of any colors, wherein the method comprises steps of

receiving target chromaticity coordinates, colors to be mixed and setting information of chromaticity coordinates of the colors to be mixed;
when a number of the colors to be mixed is three, calculating a first illuminance ratio between the colors to be mixed according to a correlation between chromaticity coordinates and tristimulus values;
when the number of the colors to be mixed exceeds three, setting a second illuminance ratio between other colors except for a first and a second color of the colors to be mixed as a preset illuminance ratio, obtaining a mixed color of the other colors according to the preset illuminance ratio;
calculating a third illuminance ratio between the first color, the second color and the mixed color according to the correlation between chromaticity coordinates and tristimulus values, thus obtaining the first ratio between the colors to be mixed;
and
mixing the colors to be mixed according to the first illuminance ratio to obtain the target chromaticity coordinates.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/262,989Filed 31 Jan 2019
Priority: CN 201710183658.424 Mar 2017
Published: 30 May 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H05B 47/10
Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant: controlling the light source
F21S 10/02
Lighting devices or systems producing a varying lighting effect: changing colors
F21V 23/003
Arrangement of electric circuit elements in or on lighting devices: the elements being electronics drivers or controllers for operating the light…
H05B 45/20
Circuit arrangements for operating light-emitting diodes [LED]: controlling the colour of the light