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Method for synthesizing standard light source through LED light mixing

A technology for synthesizing standard and standard light sources, applied in the field of LED light sources, it can solve the problems of low color rendering index, discontinuous spectrum, and limited use in the field of color measurement, and achieve the effect of improving color rendering index and enhancing spectral continuity.

Active Publication Date: 2018-12-07
浙江智彩科技有限公司
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Problems solved by technology

[0005] However, the standard light source obtained by the above two types of color mixing lacks the middle part of the spectrum between red, green and blue, which makes the spectrum discontinuous and the color rendering index is low, resulting in limited use in the field of color measurement

Method used

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  • Method for synthesizing standard light source through LED light mixing
  • Method for synthesizing standard light source through LED light mixing
  • Method for synthesizing standard light source through LED light mixing

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] Such as figure 1 As shown, in the embodiment of the present invention, a method of LED mixed light synthesis standard light source is proposed, including the following steps:

[0040] Step S1, step S1, select n-2 LED light-emitting chips with Gaussian spectral density function, a cool white LED light-emitting chip and a warm white LED light-emitting chip to synthesize a standard light source from the preset LED light-emitting chip library; n is a positive integer greater than 3; among them,

[0041]The approximate mathematical expression of the spectral density function approximately fitted by the standard light source by means of polynomial fitting is y(λ); λ is expressed as a wavelength;

[0042] The spectral function data points of the cool white LED c...

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Abstract

The invention provides a method for synthesizing a standard light source through LED light mixing. The method comprises the steps that a cold white LED light emitting chip, a warm white LED light emitting chip and n-2 LED light emitting chips except for the cold white LED light emitting chip and the warm white LED light emitting chip are selected to synthesize a standard light source; space integral is carried to mix spectra of the n selected LED light emitting chips to synthesize spectra of the standard light source, a light mixing source spectral concentration function is determined; interval sampling is carried out to construct a discrete spectral concentration function matrix, and a to-be-solved optimization problem is further constructed; and the optimization problem is solved, a solved vector quantity multiplies the discrete spectral concentration function matrix, and an obtained product is a spectral value of the synthesized standard light source. By means of the method, the spectra of middle parts of multiple wave bands among red, green and blue are increased, the spectrum continuity is strengthened, the color rendering index is effectively improved, and the method is widely suitable for color measurement, high-end lighting and the other fields.

Description

technical field [0001] The invention relates to the technical field of LED light sources, in particular to a method for synthesizing standard light sources by LED light mixing. Background technique [0002] In recent years, the color rendering index of LED indoor lighting proposed by the U.S. Department of Energy has increased from 70 in the past to more than 80. At the same time, China also has default indicators for the color rendering of LED lamps in office environments and hotels. The color rendering index is required to reach 80 or above. [0003] The trend of LED light sources occupying the general lighting market has gradually become clear, among which high color rendering and high efficiency are key indicators of the light quality of LED light sources. The spectral power distribution of some light sources is relatively continuous and contains components of various wavelengths. Under this light source, the color of the object can be truly restored. At this time, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K9/64F21V9/00F21Y115/10
CPCF21K9/64F21V9/00F21Y2115/10
Inventor 阮秀凯崔桂华李长军肖开达蔡启博谈燕花
Owner 浙江智彩科技有限公司
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