Spectrum matching method for multicolor LED to realize chroma limitation

A spectral matching and chromaticity technology, applied in the field of LED lighting, can solve problems such as imperfect spectral matching, light source chromaticity and illuminance mismatch

Inactive Publication Date: 2016-09-28
ZHEJIANG UNIV
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Problems solved by technology

However, the limitations of the actual LED color types and spectral distribution will lead to imperfect spectral matching, which will further cause a mismatch between the chromaticity and illuminance of the light source, and the chromaticity and illuminance of the light source are the most important and simple and direct evaluation indicators to characterize the lighting quality exact match required

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  • Spectrum matching method for multicolor LED to realize chroma limitation
  • Spectrum matching method for multicolor LED to realize chroma limitation
  • Spectrum matching method for multicolor LED to realize chroma limitation

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Embodiment Construction

[0062] The multi-color LED provided by the present invention realizes the spectral matching method of chromaticity restriction, mainly comprises the following steps:

[0063] S1: Acquisition of LED spectrum sample data;

[0064] S2: Set and process the spectrum and illuminance data to be matched, and obtain the corresponding target spectral radiance distribution and target absolute tristimulus value;

[0065] S3: Use constrained differential evolution algorithm for iterative matching to obtain the driving values ​​of various LEDs that match the target spectral radiance distribution and target absolute tristimulus value;

[0066] S4: Perform spectral and chromaticity matching evaluation on the target spectral radiance distribution measured under the above driving value.

[0067] The above methods will be described in detail below in conjunction with the embodiments and accompanying drawings, so as to better understand the essence of the present invention.

[0068] The multi-c...

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Abstract

The invention discloses a spectrum matching method for a multicolor LED to realize chroma limitation. The method is characterized by firstly, through sampling and measurement, acquiring spectrum sample data of each color single LED; then, converting a spectrum to be matched and illumination so as to acquire corresponding target spectral radiant brightness distribution and an absolute tristimulus value; and finally, using a constraint differential evolution algorithm to carry out iteration matching so as to acquire a corresponding LED driving value. And simultaneously, in the invention, a spectrum matching evaluation index, a chromaticity difference, an illumination error percentage are used to evaluate a matching result. By using the method, disadvantages in a current spectrum matching method are overcome, demands of an actual illumination application to the light source chromaticity, the illumination, the spectrum and other illumination quality aspects can be satisfied and a practical and effective realization method of continuous adjustment of a light source color temperature and the illumination is provided.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to a spectrum matching method for multi-color LEDs to realize chromaticity limitation. Background technique [0002] In recent years, people's awareness of low carbon, environmental protection and energy saving has been continuously enhanced, which has led to the rapid development of new LED-based lighting technologies. At present, LEDs have been widely used in various fields, such as signal indication, lighting, biomedicine, and sunlight simulators. Among them, in lighting applications, people often have specific requirements for lighting indicators such as color temperature or chromaticity, illuminance and even spectrum of the light source, while LED's rich color types, convenient dimming methods and narrow-band characteristics of spectral distribution are at the same time. It is possible to meet these needs. Therefore, it is of great practical significance for lighting applications ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/46G01J3/28
CPCG01J3/28G01J3/463
Inventor 徐海松章夫正汪哲弘
Owner ZHEJIANG UNIV
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