6 LED lights have 4 kinds of detection with the risk of blue light hazards of the 1 categories

Beijing News round light bulbs, elliptical dome lights, energy-saving lamps, folding table lamps and other different types of lighting tools, are now keen to build LED concept. LED light due to light stability and energy saving, has been favored by consumers, but there are rumors that LED blue light will cause damage to the retina, the actual situation?

Recently, the Beijing News reporter through supermarkets, small commodities market and other ways to buy a 6 lamp, including LED bulb lamp, LED lamp and folding ordinary energy-saving lamps, and sent to the Beijing Institute of Metrology science and green light industry testing center, please experiment simulated photosynthetic radiation damage detection of 6 kinds of lighting environment the lights.

Beijing City Institute of Metrology green light source testing center, laboratory personnel are testing whether there is a blue light LED hazard

Contrast of high quality LED lamp and inferior LED lamp

Test results show that, according to the national standard, there are 6 lights in the 4 types of LED lights to detect the blue light hazard, and the risk level are dangerous for the 1 category. The City Institute of Metrology Engineer Zhang Jianliang introduction, 1 class risk belongs to low risk level, using the conventional lighting lamp is safe for most of the time; but the 1 kinds of risk also have an impact on the visual health, long time direct light can damage the retina, so try not to open source LED lamps or high-quality LED lamps.

In the experiment

Experimental location: Beijing Institute of Metrology and testing, green light industry testing center

Experimental samples: 3 LED bulb, 2 LED lamp, 1 ordinary energy-saving lamps (Note: blue light hazard is mainly in the LED light source, but in order to understand the ordinary energy-saving lamps whether the purchase of the blue light hazards in the sample also includes a common energy saving lamp)

Experiment 1

5 samples detected low risk of blue light radiation

Experimental process: using the optical radiation safety measurement system of the test instrument, the 6 lamps are fixed on the guide rail lamp holder, instrument probe detection light source for testing. Among them, bulb lamp and energy-saving lamp on the standard illumination showing the value of 500lx (Lux) at test, two lamp from the standard 20cm test probe. Close the other light sources in the laboratory, the system according to the received light source analysis of its light radiation hazards, and then according to the national standard to assess the risk level of each lamp.

The results of the experiment: 6 samples, there are 4 LED lamps and 1 ordinary energy-saving lamps are detected in the blue light of the 1 level of danger (low risk). In addition, 1 higher price 3W power aluminum shell LED bulb light for no danger.

Experimental analysis: responsible for the Municipal Institute of Metrology Engineer Zhang Jianliang introduction, the current detection light blue light radiation is based on the national standard GB/T20145-2006 "light" biological safety of lamps and lamp systems, the blue light hazard grade is divided into no risk categories (light under the extreme conditions do not cause any harm, 1 kinds of biological light) risk (low risk, that limited exposure to normal conditions, light does not harm), 2 types of dangerous (dangerous, the lights do not produce light and temperature on the reaction of the 3 kinds of risk (hazard), high risk, that is light in the short moment harm).

The detection of 5 kinds of samples belonging to the risk of the 1 category, this lamp can be used for normal lighting, but there is still a certain degree of harm to the vision, the eye is best to avoid this kind of light source.

Experiment 2

4 samples of high color temperature 6500K

Experimental process: the same as the above detection methods, the use of optical radiation safety measurement system of the test instrument, the 6 kinds of lighting samples placed in the designated position detection. The system analyzes the color temperature according to the received light source, and the light source of each lamp is more than 20 minutes.

Results: 3W power LED bulb lamp color temperature is 6557K, 5W power LED bulb lamp color temperature is 6226K, 3W power aluminum shell LED bulb lamp color temperature is 2874K, the energy-saving lamp color temperature is 7908K, LED blue lamp color temperature is about 9000K, LED folding lamp color temperature is 9427K.

Experimental analysis: in charge of this experiment, the city of Liu Yi, the Institute of engineers, 6 samples of the lamp has 4 samples of color temperature above 6500K, color temperature is relatively high. According to the related standard, the color temperature 2720K is the incandescent lamp light, the color temperature 3450K is the white light, the color temperature 4040 is the cold white light, the 5000K is the neutral white light, the color temperature 6430 is the sunlight color light. For lamp color temperature can be selected according to personal preferences. However, if the temperature is too high, the light will give a light and dazzling feeling, it is not suitable for lighting.

- Weapon

How to identify the LED lamp good or bad?

Huang Yan, director of the Institute of metrology, LED lamp life and heat dissipation is directly related to the quality, from the results of this experiment, the quality of LED light on the eyes of the blue light radiation hazard is also smaller.

Huang Yan said, the purchase of two tips: one is to weigh weight, high quality LED lamp structure is relatively complex, more material components. The two is to touch the temperature, before the purchase of lighting, the general site trial. Good LED lights because of heat science, lit for some time, the bulb surface will not have a fever, and poor quality LED lights lit a few minutes after the apparent heat.

High quality LED lamp, the lamp welding circuit is separated from the power supply. Because the LED lamp in the process of use, the power supply will produce a lot of heat, and the quality of the LED lamp holder is generally aluminum material, can effectively diverge the power supply generated heat, thereby protecting the power supply.

Inferior LED lamps in order to reduce costs, general