Method and system for determining maximum brightness of super-three-color LED light source matching target chromaticity

Abstract

The invention provides a method and system for determining the maximum brightness of a super-three-color LED light source matching target chromaticity, solves a problem that a target chromaticity is matched through the super-three-color LED light source under the condition that the target light color brightness is not given, determines the maximum brightness which can be achieved by the super-three-color LED light source when the target chromaticity is matched, further solves a problem that a light mixing equation does not have a unique solution when the target light color brightness and the chromaticity are given, and can avoid a problem that the given target light color brightness possibly exceeds the maximum brightness which can be mixed by the light source. According to the method, anabsolute tristimulus value of each light color LED of the super-three-color LED light source at the maximum control signal value is measured only through a spectral radiometer, and then a linear programming model is constructed in combination with a target chromaticity and is solved, so the maximum brightness when the target chromaticity is matched can be determined. The method is advantaged in that the method is simple and convenient to operate, can meet the requirement of dimming by adopting a super-three-color LED light source, and can be applied to intelligent lighting and dynamic lightingsystems.

Description

technical field [0001] The present disclosure relates to the related technical field of LED lighting, in particular, to a method and a system for determining the maximum brightness of a super three-color LED light source matching a target chromaticity. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the advantages of high efficiency, energy saving, environmental protection, long life, and convenient dimming, LED light sources are entering the field of general lighting applications with unstoppable momentum, and are known as the third light source revolution after incandescent lamps and fluorescent lamps. At present, there are two main methods for LED light sources to produce white light, that is, blue light chips excite yellow phosphor powder and mix multi-color chips. Among them, the latter has the advantages of high efficiency, h...

AI Technical Summary

Problems solved by technology

The inventors found that, on the one hand, only given the target chromaticity information, it is impossible to determine the mixing ratio of each light color LED of the super three-color LED light source

On the other hand, since the super three-color LED light source contains more than three types of chips, even if the brightness and chromaticity information of the target light color are given, the solution to the light mixing equation is not unique, that is, for the three-color LED that can solve The method of the proportion of each light color of the light source is not applicable to the super three-color LED light source

At the same time, the brightness of the target light color may exceed the maximum brightness that can be mixed by the super three-color LED light source, so that the light color that meets the user's lighting requirements cannot be adjusted or mixed multiple times. less efficient

Images