White LED can rest in indoor use?

White LED can rest in indoor use?

LED light source is very good, but there are also some misunderstanding that LED to the human eye is hurt, even some experts dare not use, a research professor in LED said to me: 'our house need not LED light source, not I don't want to use, mainly is my wife didn't want to use, she thinks that LED to the human eye may be hurt, so very opposed to the use of the LED'.

Lighting in addition to produce a visual effect, also can produce biological effects. Why the winter, we will get up late this summer, has to get up earlier, this is actually the light in our biological control. When blue light, strong person will not sleep desire; Instead, blu-ray is very weak is helpful for people when sleep. So blue to the biothythm will have an impact. Now most of the white LED are using blue LED inspire YAG phosphors way, the peak value of wavelength blue light radiation and the blue light damage characteristic curve and the human body the visual photosensitive curve has bigger overlap. So, in the interior with white light when he LED some worry that will hurt the retina, disrupt biological clock.

To my knowledge, the international lighting committee (CIE), a former chairman of the Van Bommel professor (and philips' global lighting design and application of the former leader), center for his use of a positive attitude LED, has done a lot of research work. He titled "in a Lighting Quality and Efficiency of the ambience of the Energy Efficiency-(has) article, and analyses the LED blue light effects on people. After careful calculation, got such a result: 2700 K color temperature, and the colour developing index of over 80 white LED blue light than radiation produced the same of incandescent lamp flux even less. He thinks that color temperature 2700 K to 3000 K, and the colour developing index of over 80 white LED, can trust in indoor use.

In addition, I by China's people's liberation army air force general hospital dermatological department TianYan doctors commissioned, for her to do here a related report because of body reason, she could not attend this conference on salon. But she to the salon seriously. Doctors in the field report, said that now, CCTV news studio has USES LED lamp lighting. In the central television studio LED lighting research project, TianYan physicians for 30 DuoWei volunteers, please accept the period of 30 days on the experiment, lamps and lanterns chooses in LED light source, test the intensity of illumination for 2800 lx, irradiation time 15 minutes each day, a continuous radiation exposure, 30 days. The results found that the change of the volunteers skin color was not statistically different, that is, in the LED lights under human skin color of skin not according to produce change; In addition, LED light source to skin cutin layer water content and TEWL were not significantly influenced. The experimental results prove LED lighting to skin is safe.

At the same time, she also carry a contrast test, namely 'fluorescent lamp on human skin effect'. The results show that fluorescent lighting to the skin may be long-term damage. First is the skin color indexes changed, L value falls, a is increasing, M is increasing, E is increasing; Skin color black, red; At the same time of the decline of the moisture content of corneous layer trend; And when the radiation dose increases, the organizational structure of the skin and there have been some changes.

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