Said online using a mobile phone to see stripe is low, easy to cause fatigue, eye injury, desk lamp, hope you recommend some good reading for a long time, mainly recommended within 100 yuan small desk lamp, of course, you can go home and buy a good
To see from the Angle of optical: traditional light source, including the red wavelengths of light, you can understand as invisible infrared, the over 780 - nm wavelength radiation can cause damage to the eyes, myopia are mostly indoors for a long time, too much rely on under the traditional lighting light caused by the work and study. And LED light source, mainly is the blue chip inspire yellow phosphor, the wavelength of light in between 380-780 nm, no ultraviolet and infrared light, good LED light source (note is good, usually see in stores outside does not conform to the mostly, the current domestic exports have all the good) color rendering index greater than 85 (color rendering index, the higher the more close to natural light), have relatively full spectrum, and also is to have the green light at the same time, close to natural light, a lot of time to treat myopia are to see green things, because it is depends on the green light to repair damage to the eyes, at least not add to myopia.
To see: from the perspective of electronic LED desk lamp, due to the light source is LED, LED is a dc light-emitting devices, theoretically to the light, the previous generations of light source with us to the light, the traditional light source such as energy-saving lamps, metal halide lamp, incandescent lamp is communication, will follow the civil power to change the frequency of the input current, so the frequency of communication wave makes the traditional light source will appear in the stroboscope, long-term study working in this kind of light source under the eyes hurt. Use LED lamp, want to see you understand not understand, not all leds are no stroboscopic, if is to use the desk lamp of rechargeable batteries, light-emitting panel does not directly see each LED lamp bead, no dazzle light is that it can until the protection for your eyes, please note that must choose surface is illuminated.
100 yuan less than a good desk lamp, it depends on what you mean "good" means good. If it is also the appearance of the, on the Internet that a lot, because of differences in personal vision, this is bad recommendation. But if you want to good performance, good quality, it is estimated that 100 yuan can not be done. As far as I know, a bit better to import medium power LED lamp bead a nearly a dollar money, if calculate by 10 w lamp bead costs 20 yuan, not to mention the adjustable light, color temperature (this is the "good" table lamp) the most important indicators, the cost of the other, "good" lamps on the market at least 300 yuan. Have time to learn about the "account name", it should be on the market the most valuable "good" table lamp.
