Can the eyelet lamp do not use a ballast
The basic working principle of the lamp that shield an eye is to increase the low frequency to high frequency flash, it USES the variable frequency electronic ballast, speed up the flashing, raise the flashing thousands of even tens of thousands of times per second, the nerve response rate of flicker faster than the human eye, so learning, office, in the light within a short period of time, people will feel more comfortable eyes. But high frequency flash absolutely is not equal to no stroboscopic, the lamp that shield an eye does have certain benefits compared to the common fluorescent lamp, but it's not like the advertisement said no stroboscopic, to light it is still a discontinuous, is a bright a light, a long time to read in this light, the eye also can produce fatigue.
Eye" effect of the lamp that shield an eye, tianjin eye hospital, said 18 li lh, director of the optometry and glasses center light too bright too dark or there is damage to the eyes, can lead to visual fatigue, thus make myopia deepen, at the same time the stroboscopic light also is bad for your eyes. Now the eye lamp that sells on market is not without the frequency flash, just the frequency is very high, the human eye can't be able to distinguish, so the feeling is not the same as the frequency. The light of the eye lamp is too bright, but the eye is not good. Experts advise consumers to opt for traditional incandescent lamps. Incandescents are yellow light, soft, and because there is no alternating current, the light is more stable.
National electric light source quality supervision and inspection center of Beijing the lamp that shield an eye had special spot market, spot check results show that 80% of the products on the market is poor quality raw materials, such as unqualified components, components. The design of the circuit is not in accordance with the specification; The curing agent, the flame retardant is not enough, the heat resistance is not qualified; Light shading, low power, high frequency flash, etc. Inferior the lamp that shield an eye on children and adolescents eyesight caused serious harm, although not can appear in the short term, but its security hidden danger to the human body and the impact on the normal product is obvious.
To increase the stroboscopic light the number of seconds to tens of thousands of times, the tubes at the same time of light, high frequency electronic ballast is likely because of the high frequency oscillation and generate electromagnetic radiation, and the current market sales are generally desk lamp, the lamp that shield an eye close to the body when using, therefore the electromagnetic radiation may affect human brains. On the issue of the electromagnetic radiation, has this aspect of the mandatory national standards, can only be considered to be qualified to achieve this standard, is the basic harmless, but a lot of the lamp that shield an eye on the market at present can't up to par.
National quality supervision and inspection center of lamps and lanterns and fudan university institute of electro-optical test results show that using the high frequency ballast production of the lamp that shield an eye, the stroboscopic fluctuations in depth in the range of 7.27% to 24.03%, there were no significant differences compared with incandescent lamp, no stroboscopic and strictly refers to stroboscopic wave depth is less than 5%, that is the lamp that shield an eye does not meet the required no stroboscopic.
