A single LED lamp can emit color light it

Answer:

Look from the angle of traditional optical light source will be issued at the same time when the wavelength of the red light, invisible infrared radiation wavelength above 780nm will cause damage to the eyes, most of myopia are long-term in the interior, over reliance on the work in the traditional lighting under the irradiation caused by learning. The LED light source, mainly blue chips stimulate the yellow phosphor, the luminescent wavelength is between 380-780nm, no ultraviolet and infrared, high quality LED light source color index greater than 85 (the higher the color index close to natural light), has a relatively full spectrum, at the same time have a green light, close to natural light. A lot of time for treatment of myopia is all to see green things, because it is light green eyes on repair of the damage, at least not aggravate myopia.

Look from the electronic angle: a single LED lamp, because the light source is used in LED, LED is a light emitting device of DC, on the theory that is issued to the light source, and several generation of light emitted is not the same, the traditional light source including energy-saving lamp, halogen lamp, incandescent lamps are AC that will follow the civil power input current frequency changes (China is 220V, 50HZ grid), so the frequency fluctuation of exchange in the traditional light source will appear to flicker, long-term work in the source under study will hurt the eyes. The use of LED lamp, to see you understand, not all LED lights are no stroboscopic lamp, if use rechargeable batteries, a light emitting panel does not directly see the LED bulb, no glare is able to protect the eyes until, please note that we must choose the surface light.

A single LED chip with a control chip can send out various colors;