How to choose and buy for children the lamp that shield an eye

In recent years, the aging and aggravate children myopia has become many parents' heart. It is reported that there are more than 400 million people with myopia. 'Heavy disaster area' among them, the incidence of juvenile myopia has reached to 50% 60%! In addition to the usual eye health and genetic factors, the cause of myopia is closely associated with light, students often must use night lamp and desk lamp. Many parents want to buy the desk lamp that shield an eye for the child, to protect their eyesight. But faced with store full of beautiful things in the lamp, how to correctly choose lamp? The following manufacturers to take you to know about the smart home. Incandescent lamp: in terms of light, and incandescent light yellow, usually lack of brightness. The light bulb flickering phenomenon is more serious, calorific value is big, especially in hot summer, easy to cause irritability. Traditional the desk lamp that shield an eye: good the desk lamp that shield an eye use three colors light bulb, the bulb use phosphors and current stimulate phosphor powder, and then the bright light. Three colors light bulb and the difference between ordinary energy-saving lamps phosphor material and formula is different, so the radiation light will be different, color reducibility is better than the ordinary energy-saving lamps, brightness will be better. High and soft lighting. But that was not enough to achieve the purpose of protecting our eyes. High frequency electronic rectifier will also need to current through frequency up to tens of thousands or even hundreds of thousands of Hertz, and light flashing will reach tens of thousands of times per second. Eyes are hard to identify, so called no stroboscopic. In fact, there is still a stroboscopic, but stroboscopic relatively quickly, the human eye can't identify. LED lamp, LED lamp USES LED semiconductor light source. The characteristics of semiconductor light source determines its must use direct current (dc) to work, fundamentally eliminate the stroboscopic and radiation. LED light source spectrum is also thought to be very close to natural light spectrum. Humans will be half of the time is spent every day in the sun, so they are very adapt to the light of the sun, therefore, the closer the light from the sun light, the better to the human body. Only choose the right desk lamp, can better protect the children's eyes.