Light source color rendering evaluation method based on color indexes

Abstract

The invention discloses a light source color rendering evaluation method based on color indexes. The method comprises the following steps: a, the relative spectral power of a to-be-measured light source K is measured; b, according to CCT of the to-be-measured light source K, the relative spectral power of a reference light source r is selected; c, according to a signal correlation principle, a spectral similarity function for the to-be-measured light source K and the reference light source r is built; d, a contribution factor of human eye color resolution and the relative spectral power of the light source K and the relative spectral power of the reference light source r obtained in the steps a and b are substituted to the spectral similarity function for calculation, and the color similarity of the to-be-measured light source K relative to the reference light source r is obtained; and e, the color similarity obtained in the step d is quantized to obtain the color indexes, and according to the color indexes, the color rendering of the to-be-measured light source K is evaluated. In combination with the contribution factor of human eye color resolution, the color indexes not related to a color sample can be calculated, and the light source color rendering can be reflected and evaluated more accurately through the color indexes.

Description

technical field [0001] The invention relates to a method for evaluating the color rendering of a light source based on a color index. Background technique [0002] With the emergence of new light sources, especially LED light sources, and the deepening of research, the problems of color rendering index CRI evaluation of light source color rendering have become increasingly prominent. A lot of research and improvement programs have been done at home and abroad, but the results cannot be matched well with the results of visual experiments. The public acceptance is not high, and the introduction of more accurate light source color rendering evaluation methods is getting louder and louder. . [0003] For this reason, the inventor actively researched and innovated in order to start from the essence of the color rendering ability of the light source, and consider the influence of the human eye on the color resolution, and create a simple and effective color rendering index of the...

AI Technical Summary

Problems solved by technology

A lot of research and improvement schemes have been done at home and abroad, but they cannot match the results of visual experiments very well. The public acceptance is not high, and there are more and more calls for more accurate light source color rendering evaluation methods.

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