Light source color rendering evaluation method based on color indexes

A technology of color index and evaluation method, which is used in the testing of optical performance, optical instrument testing, and testing of machine/structural components, etc. It can solve the problems of inability to match the results of visual experiments and low public acceptance, and achieve the color rendering of light sources. The method of evaluating accurate, color index is simple and clear, and the effect is fast

Active Publication Date: 2017-04-26
HUAQIAO UNIVERSITY
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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 w

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  • Light source color rendering evaluation method based on color indexes
  • Light source color rendering evaluation method based on color indexes
  • Light source color rendering evaluation method based on color indexes

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[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0040] The method for evaluating the color rendering of a light source based on a color index of the present invention includes the following steps:

[0041] a. Measure the relative spectral power of the light source K to be tested;

[0042] b. Select the relative spectral power of the reference light source r according to the CCT (relative color temperature) of the light source K to be tested;

[0043] c. Construct the spectral similarity function between the measured light source K and the reference light source r according to the principle of signal correlation;

[0044] d. Substitute...

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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...

Claims

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Application Information

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IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 庄其仁赖传杜胡奕彬
Owner HUAQIAO UNIVERSITY
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