A method for quantitative analysis of blue light hazard and rhythmic effect based on light source color temperature

A technology of blue light hazards and quantitative analysis, applied in the direction of testing optical performance, etc., can solve problems such as complex mathematical operations, not given blue light, difficulty, etc.

Active Publication Date: 2020-07-07
广州市华丰照明科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the mathematical operations related to formula 1 and formula 2 are relatively complicated, and professional mathematical software such as Matlab and OrignPro are required for calculation and analysis, 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 quantitative analysis of blue light hazard and rhythmic effect based on light source color temperature
  • A method for quantitative analysis of blue light hazard and rhythmic effect based on light source color temperature
  • A method for quantitative analysis of blue light hazard and rhythmic effect based on light source color temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The steps of the method for quantitatively analyzing the blue light hazard and rhythm effect according to the color temperature of the light source in this embodiment are as follows: figure 1 , figure 2 , image 3 .

[0061] Step 1. Obtain the color temperature Tc of the fluorescent lamp under test:

[0062] The color temperature Tc is found to be 5200K on the manual of the tested fluorescent lamp.

[0063] Step 2. Calculate the blue light hazard factor and rhythm factor:

[0064] 2a) Substitute the color temperature of the fluorescent lamp to be measured Tc=5200K into the value, K B =1.48538×10 -7 ×Tc-1.24574×10 -4 Calculate the blue light hazard factor K of the tested fluorescent lamp B =6.47824×10 -4 W / ml.

[0065] 2b) Substitute the value of the color temperature of the fluorescent lamp to be measured Tc=5200K, K C = 6.81334×10 -4 ×Tc-0.50954 Calculate the rhythm factor K of the fluorescent lamp under test C = 3.03339.

[0066] Step 3. Determine whether the blue light hazard...

Embodiment 2

[0079] The steps of the method for quantitatively analyzing the blue light hazard and rhythm effect according to the color temperature of the light source in this embodiment are as follows: figure 1 , figure 2 , Figure 4 .

[0080] Step 1. Obtain the color temperature Tc of the tested high-pressure sodium lamp:

[0081] The color temperature of the tested high-pressure sodium lamp is 2100K.

[0082] Step 2. Calculate the blue light hazard factor and rhythm factor:

[0083] 2a) Substitute the color temperature Tc=2100K of the measured high-pressure sodium lamp into K B =1.48538×10 -7 ×Tc-1.24574×10 -4 Calculate the blue light hazard factor K of the tested high pressure sodium lamp B =1.87256×10 -4 W / ml.

[0084] 2b) Substitute the color temperature Tc of the measured high pressure sodium lamp into the value of 2100K, K C = 6.81334×10 -4 ×Tc-0.50954 Calculate the rhythm factor K of the measured high pressure sodium lamp C = 0.92126.

[0085] Step 3. Determine whether the blue light haza...

Embodiment 3

[0092] The steps of the method for quantitatively analyzing the blue light hazard and rhythm effect according to the color temperature of the light source in this embodiment are as follows: figure 1 , figure 2 , Figure 5 .

[0093] Step 1. Obtain the color temperature Tc of the measured incandescent lamp:

[0094] 1a) The color temperature data is not found in the manual of the tested incandescent lamp, and it needs to be measured.

[0095] 1b) Make the incandescent lamp work normally under 220V, 50Hz mains power, collect the 380-780nm visible light waveband spectral distribution in a dark room, and use the chromaticity analysis software to obtain the color temperature Tc of 2550K from the incandescent lamp spectral distribution data.

[0096] Step 2. Calculate the blue light hazard factor and rhythm factor:

[0097] 2a) Substitute the value of the measured color temperature of the incandescent lamp Tc=2550K, K B =1.48538×10 -7 ×Tc-1.24574×10 -4 Calculate the blue light hazard facto...

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Abstract

The invention discloses a method for quantitatively analyzing blue light hazard and rhythm effect according to the color temperature of a light source. Firstly, a common and easily-obtained color temperature value of the light source is obtained; next, according to KB=1.48538*10<-7>*Tc-1.24574*10<-4>, KC=6.81334*10<-4>*Tc-0.50954, a blue light hazard factor and a rhythm factor of the tested lightsource are respectively calculated; and whether the bio-safety of light of the test light source is qualified or not is judged according to the condition that blue light hazard factor and the rhythm factor exceeding common white candle light by 10% are taken as safety thresholds (blue light hazard factor K<B-candle>=2.36689*10<-4>W / ml and the rhythm factor K<C-candle>=1.359), when the bio-safety is unqualified, the percentage exceeding the safety threshold is given. The simplified calculation method for the blue light hazard factor and the rhythm factor of the light source and the safety threshold of the two factors are given, and the method is simple in operation and clear in physical significance.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
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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