The LED light hurt eyes? How to choose the LED lamps and lanterns

Semiconductor lighting ( 领导) As a new type high efficiency, green lighting, is gradually entered the ordinary people. But the particularity of manufacturing process, make a strong blue LED lights. Online rumors, if blu-ray content exceeds a certain limit, may have a negative impact on human visual and biological rhythms. So, in the market for LED lamps and lanterns of blue light will cause harm to human body? People how to choose safe and reliable LED lamps and lanterns?

Shanghai semiconductor lighting engineering technology research center, a review of the department of Qian Wenlei is introduced, the so-called blue light, is refers to the visible light wavelength at 435 nm to 480 nm in the section. Because LED lamps on the market at present the most commonly used technical solution is a 'blue chip + yellow phosphor powder', has resulted in a blue LED lights of the content is relatively high. Medical research shows that too much blue light will cause retinal photochemical damage, can also affect the human body of melatonin secretion, disrupt the body clock.

however, this does not mean that the LED light more injury eye than other lamps and lanterns. In the experts to do the comparison experiment, the same color temperature LED lights and the safety of energy-saving lamps. The so-called color temperature, is the most common said light source spectrum quality indicators. Ordinary people say 'warm' light, color temperature is low, and the 'cold light' color temperature is relatively high. Color temperature increase, the proportion of blue radiation increases, so cause the increase of blue light. Factors influencing the blu-ray proportion of another is brightness, generally speaking, the same color temperature of fluorescent lamp and LED lamp, as long as the latter's brightness is not more than 3 times of the former, basically do not have harm. But individual too bright LED lamps and lanterns, the proportion of blue light may have more than is considered safe. Fudan university Zhang Shanrui said, the deputy director of the institute of electric light source with LED technology matures, the manufacturer is no longer needed by constantly improving the soft power of lamps and lanterns Gao Liuming degrees, objectively also reduces the likelihood of blue light too.

in fact, whether the LED lamp, energy-saving lamps, or use in the bathroom 'bath bully', is likely to be blue too much problems. At present, the world have unified standard for light blue security, photoelectric, zhejiang university professor seeks to rise, according to the latest standard in our country will be released in 2014. As long as it is strictly implement the relevant standard production of LED lamps and lanterns, ordinary citizens may rest assured to buy. According to introducing, the industry have a grading system to blu-ray harm. The safest level 0, namely blu-ray content is the lowest. Is the highest risk level 3. General indoor use LED lamps and lanterns is at level 0 - Level 1, and 2 level above the lamps and lanterns of the future will show that with the tag.

how citizens lamps and lanterns of choose and buy, experts have action. When buying indoor LED lamps and lanterns, for example, try to choose to have spread to cover or diffusion plate, cannot see directly chip, markers are not too concentrated; Bath bully when the choose and buy, had better choose color temperature is not higher than 2200 k ( Kelvin) , in general, the 'tube' bath bully 'bulb' than bath bully lower color temperature, blu-ray safety coefficient is also higher.

coordinating editor li jie