LED lamp standards or mandatory from the recommended adjustment

LED Blu ray is not so terrible

At present, China has become the world's largest producer of LED lamps. However, recent news that medical experts worry that LED blue light will cause damage to the retina, and even blindness. The news on the Internet caused widespread concern and a large number of users to forward comments.

LED lamp Blu ray really have so much harm? Is the so-called "blue spill" really a "killer" that can hurt the eyes? January 6th, the Shanghai Municipal Bureau of quality supervision organizations specialized testing agencies on the part of the LED lighting products for risk monitoring, sampling from 27 different channels for the detection of blue light hazard. At the same time, the Council also for the first time cross-border invited the medical profession, universities and industry experts together consultation, listen to the views of all parties.

China's relevant standards are not backward

There is a voice that, because of the lack of appropriate standards, led to the blue light problem of LED failed to attract due attention. In this regard, Shanghai city lighting products quality supervision and inspection station deputy stationmaster, Shanghai lighting association director Yu Anqi introduced the detection of 27 samples. The national standard GB/T 20145-2006 "lamps and lamp systems photobiologycal". According to reports, although the standard was released in 2006, but with the current international standard version is equivalent. That is to say, in the formulation of standards, we are synchronized with the western developed countries, does not fall behind.

The problem is that this standard is a recommended standard, rather than mandatory standards, the implementation of the standard discount. Therefore, the parties consultation reached a consensus: the need to upgrade the nature of the mandatory standards, and included in the lighting fixture CCC certification standards.

"Demonized" Blu ray unscientific

Is it really so terrible? Experts pointed out that the Blu ray is the nature of the light has always been, but also an important part of the sun, in a variety of white light sources are bound to exist. This means that we live in the environment can not take off the blue light, the blue light demonized is obviously unscientific.

As for the blue light hazards, the medical representatives of Shanghai ENT Hospital, chief physician Jiang Chunhui pointed out: "the test for mice in recent years, blue light photoreceptor cell damage has been reached, and the research achievements are constantly emerging. "But Yu Anqi has a different view. He points out that the" rich blue "environment and the normalized environment are 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.

Department of Optoelectronic Information Engineering Zhejiang University professor Mou Tongsheng reminder, current 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 accumulation of long-term effects and some special populations, such as children can get time to look into the light source, thereby causing damage to the retina. Zhang Shanduan, deputy director of the Institute of electric light sources, Fudan University, the future development of the standard should not be wide.

The experts suggested that although the standard provisions of the 0 categories (no danger) and the 1 category (low risk) products are safe to use, but for special populations should clearly use the 0 categories of products.

Buy LED should pay attention to color temperature parameters

In this "consultation", "color temperature parameter" this professional vocabulary also attracted the attention of everyone. It is reported that the nature of the light at noon when the temperature is high, low temperature in the morning and dusk. Due to the high color temperature lighting products in the Blu ray composition is higher, the use of such products in the office is conducive to boost the spirit. But if used at night, but it may affect sleep, resulting in biological clock disorders, thereby reducing human immunity. Therefore, Yu Anqi stressed that in the attention of LED blue light on the retina has potential harm, but also to pay attention to the rich blue LED lighting products, that is, high color temperature lighting products on the human body rhythm rhythm. Honorary chairman of the Shanghai Institute of lighting, the sea is recommended that the color temperature of indoor LED lighting products should not exceed 4000K, should avoid the use of color temperature 5000K and above LED lighting products.

At present, the current standard for effective blue attention is focused on when the light brightness to meet the standards of the 2 class (in danger) or 3 (high risk), caused by the human eye in a relatively short period of time or the moment of injury. The "rich blue" of the impact of lighting on human physiology is still a frontier issue, pending further study. Consultation results suggest that in the further improvement of the corresponding national standards or technical specifications, should be specified in different places in the LED lighting products applicable color temperature.

Start LED Blu ray risk monitoring

In the "consultation" before, Shanghai city lighting products quality supervision and inspection station from different sources were collected 27 LED samples, covering type lamp, lamp, lamp, lamp and lamp plate. According to IECEE CTL (International Electrotechnical Commission - Laboratory Committee) resolution DSH 0744 on blue light hazards were determined, the result is: under normal conditions, 14 belong to non hazardous Class 0, 13 belong to the low risk category 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. Yu Anqi pointed out that such products should take the necessary structural protection measures or add warning labels.

Although the test results from the point of view seems to be no big problem. But because of