The LED lamp, as semiconductor lighting system, has for several years. In the long run, the LED lamp has low consumption, low calorie, high purity and long life and other advantages, the future of "unification" lamps Jianghu also point the day and await for it. However, new things, always accompanied by the question, consumers on the Blu ray spectrum which contains, whether the injured eye of doubt.
In 2013, "general lighting LED and Blu ray release of the white paper", 15 experts described the luminescent principle of LED lamp, and the carding and blue clear. Then, the LED lamp is there injured eye problems?
The obvious advantage of LED lamp
LED is English light emitting diode (light emitting diode) abbreviation, its basic structure is a power semiconductor luminescent materials, placed on a wire rack, then sealed with epoxy resin around, to protect the internal core wire. So it is more compact, but its advantage is not only so.
"Evaluation of light source, photoelectric integrated level, we usually use LM said." Experts say. Lumen is the luminous flux unit, through which the light source unit can be seen at 1 watts (W) what is the energy emission power. In general, the maximum optical conversion efficiency of 555 nm (nm). Ordinary incandescent lamp can reach 15nm, fluorescent lamp is 50nm, and the common energy-saving lamp market could reach 60nm. "But these are not as good as LED lamp, it can reach 120~140nm. This figure is very impressive." Experts say.
In addition, LED lamps 50000 hours of life is also much higher than that of the fluorescent lamp for 200 hours and 1000 hours of incandescent lamp. Moreover, the environmentalists, LED lamp is a choice, it is made of nontoxic materials, unlike fluorescent lamps containing mercury pollution, while LED can also be recycled; secondly, LED low power consumption, generally the working voltage of LED is 2~3.6V. The working current is 0.02~0.03A. That is to say: it consumes power does not exceed 0.1W.
Misunderstood Blu ray
Since the LED lamp has so many advantages, why people mistrust it? The most important point is the blue eye injury. If you want to clear this problem, first look at the blue concept.
Mentioned in the "general lighting LED and Blu ray" white paper, people will be the light of wavelength 435~500nm called the blue and green light, but in general, 400~500nm is known as the blue zone. "Blue is the most close to the ultraviolet ray, the highest energy part." Expert explained. If long time exposure to blue light, easy to cause damage to the eyes, especially causing macular lesion. Because blue light will be absorbed by retinal pigment epithelial cells, causing the formation of free radicals, and the radicals induced apoptosis of retinal pigment epithelial cells, which can not supply the photoreceptor cells.
But Blu ray not only exist in the LED lamp, fluorescent, mobile phone screen are blue, and the blue is not Nothing is right. First of all, it is the component of sunlight, if there is no light exists, people also do not see the blue sky. Moreover, it can adjust the human body biological clock. In 2003, researchers USA Boston Bree Institute found, with longer wavelength compared to the green light, the shorter wavelength blue light on the biological clock of human body is more sensitive. "When the morning sun rises, the sun light is enhanced, the body sebaceous gland secretion increased, people wake up from the dream. And when the evening, blue fade, the sun into a red sunset, increase the secretion of melatonin in the body, people feel sleepy." Experts say.
"People can't stare at the sun watching, using LED light source so the people, can not just stare at the bulb at." Experts say. In the paper, the experts through a series of analysis data, obtains the LED blue light hazard compared with other light source without distinction, but it is recommended to the LED lamp outside with protective cover. Experts also said, must choose the quality security products in the purchase of LED lamp. In normal life, people can eat contain lutein many green vegetables and fruits, such as cabbage, spinach, broccoli, coriander and other food, reasonable arrangement of the Internet or wear goggles time anti blue light to avoid light damage. But, if people want to do cataract operation, the best choice with blue light filtering intraocular lens.
In addition, expert advice, the best bedroom with warm color light source, because of the blue light is beneficial to human melatonin secretion, let a person sleep.
Future development
"Now, LED lamp is experienced in the first stage to replace the traditional lighting systems, such as LED bulb lamp has been gradually into the homes of ordinary people." The expert explained, "the second stage will be the process of LED lamp to specialization, the third stage is the intelligent."
Professional and intelligent is LED light contains green orange red green blue purple color based on. In the not too distant future, people can adjust the light, like the sun in the early evening was observed in different colors. Will not be confined to the conversion adjusting light intensity, but can only rely on a light source color transform. "For example, you want to be white, then red down, if you want to be a yellow light, then it can be blue down." Experts say. |
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