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A method for analyzing blue light hazards and rhythm effects according to the z value of the color coordinates of the light source

A technology of blue light hazards and color coordinates, applied in optical radiation measurement, radiation pyrometry, instruments, etc., can solve problems such as inconvenient understanding for the general public, complex mathematical operations, and failure to give blue light

Active Publication Date: 2020-01-03
广州市华丰照明科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Calculate the blue light hazard factor K by formula 1 and formula 2 B Rhythm factor K C , Quantitatively analyze the harm of blue light and the strength of the rhythmic effect. The relevant mathematical operations are relatively complicated. It needs to use Matlab, OrignPro and other professional mathematical software for integral calculation, which is difficult for the general public and even grassroots quality inspection personnel.
In addition, the blue light hazard factor K is not given at present B Rhythm factor K C The safety threshold, and the two factors are relatively abstract, which is not easy for the general public to understand

Method used

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  • A method for analyzing blue light hazards and rhythm effects according to the z value of the color coordinates of the light source
  • A method for analyzing blue light hazards and rhythm effects according to the z value of the color coordinates of the light source
  • A method for analyzing blue light hazards and rhythm effects according to the z value of the color coordinates of the light source

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Experimental program
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Embodiment 1

[0059] The steps of the method for quantitatively analyzing blue light hazards and rhythm effects according to the Z value of the color coordinates of the light source in this embodiment are as follows: see figure 1 , figure 2 , image 3 .

[0060] Step 1, get the Z value of the color coordinate of the light source under test:

[0061] 1a) Make the tested fluorescent lamp work normally under 220V, 50Hz commercial power, and collect the spectral distribution data of the fluorescent lamp in the 380-780nm visible light band in a dark room.

[0062] 1b) According to the spectral distribution data of the fluorescent lamp, calculate the color coordinates of the 1931CIE-XYZ standard chromaticity system of the fluorescent lamp under test through the chromaticity analysis software. 0.2924.

[0063] Step 2, calculate blue light hazard factor and rhythm factor:

[0064] 2a) Substitute the 1931 CIE-XYZ standard chromaticity system color coordinate Z=0.2924 of the fluorescent lamp un...

Embodiment 2

[0079] The steps of the method for quantitatively analyzing blue light hazards and rhythm effects according to the Z value of the color coordinates of the light source in this embodiment are as follows: see figure 1 , figure 2 , Figure 4 .

[0080] 1a) Under 220V, 50Hz commercial power, make the high-pressure sodium lamp under test work normally, and collect the spectral distribution data of the high-pressure sodium lamp in the 380-780nm visible light band in a dark room.

[0081] 1b) According to the spectral distribution data of the measured high-pressure sodium lamp, calculate the color coordinate of the 1931CIE-XYZ standard chromaticity system of the measured high-pressure sodium lamp through the chromaticity analysis software, and the result is X=0.5217, Y=0.4161, and the color coordinate Z is calculated from Z=1-X-Y The value is 0.0622.

[0082] Step 2, calculate blue light hazard factor and rhythm factor:

[0083] 2a) Substitute the 1931 CIE-XYZ standard chromatic...

Embodiment 3

[0092] The steps of the method for quantitatively analyzing blue light hazards and rhythm effects according to the Z value of the color coordinates of the light source in this embodiment are as follows: see figure 1 , figure 2 , Figure 5 .

[0093] 1a) Under 220V, 50Hz commercial power, make the incandescent lamp under test work normally, and collect the 380-780nm visible light spectral distribution data of the incandescent lamp in a dark room.

[0094] 1b) According to the spectral distribution data of the measured incandescent lamp, calculate the color coordinates of the 1931CIE-XYZ standard chromaticity system of the measured incandescent lamp through the chromaticity analysis software, and the result is X=0.4692, Y=0.4133, and the color coordinates are calculated by Z=1-X-Y The Z value is 0.1175.

[0095] Step 2, calculate blue light hazard factor and rhythm factor:

[0096] 2a) Substitute the 1931 CIE-XYZ standard chromaticity system color coordinate Z=0.1175 of the...

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Abstract

The invention discloses a method for analyzing a blue light hazard and a rhythm effect according to a color coordinate Z value of a light source. The method comprises the following steps of firstly, obtaining a color coordinate Z value of a 1931 CIE-XYZ standard colorimetric system according to spectral distribution data of a visible spectrum of 380-780 nm of a tested light source; respectively computing a blue light hazard factor and a rhythm factor of the tested light source according to (formula); and finally, judging whether biological safety of the tested light source is qualified or notby taking more than 10% of the blue light hazard factor and the rhythm factor of the candlelight of a common white candle as safety thresholds (the blue light hazard factor of the candlelight is (formula) and the rhythm factor is (formula)), and giving a percentage exceeding the safety thresholds when the biological safety is unqualified. The invention provides a simplified calculation method forthe blue light hazard factor and the rhythm factor of the light source and the safety thresholds of the two factors, the operation is relatively simple, and the physical significance is clear.

Description

technical field [0001] The invention relates to the field of photobiological safety, in particular to a method for quantitatively analyzing blue light hazards and rhythmic effects according to the Z value of the color coordinate of a light source. Background technique [0002] Blue light hazard refers to the photochemical damage to the retina of the human eye under the irradiation of blue light in the 400-500nm band. Rhythm effect refers to the phenomenon that the blue light component in visible light inhibits the secretion of melatonin from the pineal gland and stimulates the secretion of cortisol from the adrenal gland, thereby changing the human body's circadian rhythm and regulating alertness and biological clock. It is also called non-visual effect. [0003] At present, many international authoritative organizations have regulated or paid attention to the blue light hazard and rhythmic effect of artificial lighting. For example: CIE S 009 / E:2002 and IEC / TR 62778 respec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/60
Inventor 杨超普方文卿张国春刘彦峰赫蕊蕊祝飞李佳辛泽良任伟华冯伟旺
Owner 广州市华丰照明科技有限公司
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