Many people have heard of the doubt and uncertainty, experts said, the led torch lights used in outdoor and large spaces, but the family should be used with caution, especially in the three categories of people to be extra careful. Please listen to the reports:
Despite the in blue LED injury issue, the industry and the views of the experts is not exactly the same. But one thing completely without controversy, and that is the LED light, belong to the rich blue. International Optical radiation safety Standardization Committee the Zhejiang University Professor Mou Tongshenghu of special reminder, there are three categories of people should be used with caution, the first class, we all want, is the delicate eyes of children. The other two types of people generally know very little about:
Diabetes later after ten years of development, has a retinal lesions, the retina is exposed to light damage valued at approximately declined significantly, as well as drugs, we live in a lot of drugs are photosensitive, we took the pills, light damage may be more obvious. 】
The reporter interviewed medical experts, that there are no less than twenty kinds of photosensitive drugs, doxycycline, ciprofloxacin, oral hypoglycemic agents D-860 is more commonly used. Patients taking these drugs, not only with the light to be careful, the sun also need to be careful.
During the discussion, there is a technical term is frequently mentioned, and that is the color temperature:
LED energy-saving energy-efficient, but can not avoid very high color temperature. (Indoor, color temperature down.)]
The so-called color temperature is a measure of the scale of the light source color, low color temperature is what we usually say that the warm light, the more red component, less blue component. On the contrary, the a bluish cool light, the color temperature is relatively high. Our common light source, the candlelight color temperature about 2000K, the incandescent lamp is 3000K, the morning sun is about 4400K, noon rose to 5600K. Senior Engineer, Shanghai Illuminating Engineering Society chairman YuAnQi different times of the day in the day light, comply with the laws of nature is the best, and now the LED lights on the market, the color temperature is generally high, would interfere with the human body clock:
Household lights when most of the night, you need a low color temperature light, the measurement of the color temperature of 27, there are seven samples is much higher than 6500K, even more than 10 million K, is beyond the white lighting products the upper limit of the color temperature, long-term use will affect sleep, according to the clock disorder, so as to reduce the person's immune system. 】
This point, consumers do not know much! The reporters look at the series of more than a dozen like lamps, the color temperature of the light are not marked on the outside of the package. There are two is marked in the manual. The experts called for the state should provide, lighting products should color temperature on the outside of the package clearly marked. China LED lighting Chairman of the Forum, said Professor Zhang Cong Hai consumers but also to avoid a misunderstanding, that is, the brighter the light, the better. LED rechargeable lamps best be accompanied by shade, on the one hand, the light can be softer, on the other hand, the testing proved that doing so can overflow Blu-ray reduced by 1-2 orders of magnitude:
[In order to improve the light efficiency, many manufacturers unscrupulous, the most obvious is the lamp, many of which were one by one bare, this person is uncomfortable. The lamp has a cover below, put the thorn eyes not sting the eyes. 】