LED blue spill cited safety standards or concerns introduced next year

With the rapid popularization of LED lighting, the problem of human health caused by the overflow of blue light has aroused wide concern. Days ago, experts said, China's LED lighting safety standard is expected to be unveiled next year.

Although prices have been high, but LED home lighting is still not slowing down into the footsteps of the family. The author found that, LED lighting products to attract consumers not only lies in its ultra high energy performance and long service life, many consumers pay more attention to the concept of eye protection. The child is in high school, every day to write a few hours of homework. In order to protect the child's eyes, bought him a special eye lamp. Ms. Wu said consumers.

The author found that in the online sales of LED table lamps are mostly focused on the introduction of its no stroboscopic, anti myopia, eye protection and other effects.

But recently, some medical and electric lighting experts pointed out that many LED lamps are blue light overflow problem, serious will retina by days and months multiplying, irreversible damage, serious or even cause blindness. I understand that, in view of this problem, in January of this year, the Shanghai Municipal Quality Supervision Bureau has organized a special organization to detect some of the LED lighting products for risk monitoring. At the same time, the Shanghai Municipal Bureau of quality supervision is also the first cross-border invited the medical profession, universities and industry experts together consultation, listen to the views of all parties.

Fudan University electric light Research Institute deputy director Dr. Zhang Shanduan said, Blu ray hurts a recent example, is caused by the Xi'an blue lights Yuba a baby eyes burned, eventually lead to blindness.

According to reports, in the LED light source, because most of the light emitted by the white light through the blue chip LED plus yellow phosphor mixed, the peak of spectral energy is just in the blue band. Related research shows that different wavelengths of blue light is different for the harmful effects of human harm, between 435 nm to 440 nm blue light to the eyes of the greatest harm degree decreases with the increase or decline of wavelength.

Yu Anqi, deputy director of the Shanghai Municipal Quality Supervision and inspection station of lighting products, Shanghai lighting society, chairman of the view that the intensive exposure of the rich blue environment and normalization of the environment is two different concepts. But he also stressed that it is precisely because of the white light LED lighting products rich in the characteristics of the blue spectrum, there is an international standard for biological hazards, which prompts the safety of products should be achieved.

Zhang Shanduan pointed out that although China's GB/T20145 - 2006 "lamps and lamp systems photobiologycal" national standards for blue light hazard and quantization calculation method made clear, but this standard is only recommended, not mandatory. At present, there is no threshold to enter the LED industry, especially in the downstream assembly lamps manufacturers, there are a lot of husband and wife shop manual workshop, it is difficult to ensure quality.

Professor Mou Tongsheng of Zhejiang University Department of Optoelectronic Information Engineering, the standard limit value is proposed and the experimental data of adult 8 hour exposure based on the light on the human body has not yet considered the long-term accumulation of influence and some special populations, such as children can get time to look into the light source, thereby causing damage to the retina. The "0" (no risk) and the other (low risk) products are safe for use in the "light and biological safety of lamps and lamp systems" (). Shanghai city lighting products quality supervision and inspection station at the end of 2012 from different sources were collected 27 LED samples, according to the IECEECTL (International Electrotechnical Commission - Laboratory Committee) resolution to determine the harm to the blue results show that under normal conditions, 14 samples belong to the 0 class risk free, 13 belong to low risk class 1, belong to the scope of security. However, if the use of non normal state, that is, before the light diffusion cover removed, there are 1 to reach the dangerous category of the 2.

However, the author found that the current market on the LED lamps, and did not clearly indicate what kind of Blu ray. Held in the days before the "2013 China international semiconductor lighting technology forum, experts suggest that the LED light future market sales should be clearly marked what kind of standard, which should be used with caution. At the same time, the "lamp and lamp system of biological safety standards" to enhance the quality of the mandatory nature, and included in the lighting certification standards.

According to LED international standards for the safety performance of the development of the person in charge Mou Tongsheng said, the new mandatory national lighting safety standards are being developed, is expected to be introduced next year. By then, the safety performance of all lighting products will be divided into 4 levels, and affixed to the label, to consumers express, of which only the level of 1 and only suitable for family use.