In recent years, the aging and exacerbation of myopia in children have become a heart disease for many parents. According to reports, there are currently over 400 million myopia patients in China. Among them, the incidence of myopia among adolescents in the "severely affected areas" has reached 50% -60%! In addition to usual eye hygiene and genetic factors, the causes of myopia are also closely related to light, and students often have to use night reading lamps and desk lamps. Many parents want to purchase eye care desk lamps for their children to protect their eyesight. But how to choose a desk lamp correctly when facing the dazzling array of desk lamps in the mall? Let's take you to learn about smart home manufacturers below.
Incandescent lamp: In terms of light, incandescent lamps tend to be yellow and have insufficient brightness. The flickering phenomenon of the light bulb is more severe, generating more heat, especially in the stuffy summer, which can easily cause irritability.
Traditional eye protection desk lamp: A good eye protection desk lamp uses a three primary color bulb, which uses fluorescent powder and current to excite the fluorescent powder, and then emits bright light. The difference between three primary color bulbs and ordinary energy-saving lamps lies in the different materials and formulas of fluorescent powder, so the radiation light will be different. The color reproduction is better than ordinary energy-saving lamps, and the brightness will also be better. High and soft light. But this is not enough to achieve the goal of protecting the eyes. It is also necessary to increase the current frequency to tens of thousands or even hundreds of thousands of hertz through high-frequency electronic rectifiers, and the flicker of light will reach tens of thousands of times per second. It is difficult for the eyes to recognize flicker, hence it is called no flicker. In fact, there is still flicker, but it is relatively fast and cannot be recognized by the human eye.
LED desk lamp: LED desk lamp uses LED semiconductor light source. The characteristics of semiconductor light sources determine that they must use direct current to work, fundamentally eliminating flicker and radiation. The spectrum of LED light sources is also considered to be very close to that of natural light. Humans spend half of their time on the sun every day, so they are very adapted to the light of the sun. Therefore, the closer the light is to the sun's rays, the better it is for the human body.
Only by choosing a suitable desk lamp can children's eyes be better protected.