What is the principle of eye protection?
"Eyes are the window of the soul." Every parent does not want their children to wear small glasses early. In addition to the damage caused by a series of electronic products such as mobile phones and tablet computers to the eyes of the children, there are also some unavoidable factors, such as reading light at night and writing homework, which will also affect the child's vision. As a result, many merchants have launched a variety of eye protection desk lamps under the banner of “eye protectionâ€. What about eye protection? QI just installed the following network Xiaobian look at Eye Eye principles and action.
Eye lamp
First, eye protection concept
Eye protection lamp is not a normative term, mostly marketing concept, which refers to those table lamps that have protective effects on the eyes, mainly composed of two parts: the lamp holder and the lamp. The lamp head is usually made of a light source with good light quality (such as a halogen lamp or a trichromatic fluorescent lamp). The lamp is a lampshade, a lamp post, a base, and a drive for supplying current to the light source, which can improve the uniformity of light distribution and can reduce or reduce glare. Circuit composition.
Second, the principle of eye protection lamp
Eye protection principle
1. Using frequency conversion electronic ballast, the electric frequency is increased from 50Hz to 30-50kHz, and the variation of light brightness is very small due to the afterglow effect of the phosphor, so the human eye basically does not feel stroboscopic, and the light is adopted. The trichromatic phosphors soften the light to reduce visual fatigue.
2, the use of DC ballast, the alternating current into DC, with DC lighting, also achieved basic stroboscopic, can avoid visual fatigue, and no electromagnetic interference.
Third, the role of eye protection
Eye protection can reduce eye fatigue, but it does not mean that it can prevent myopia. If you keep reading the book for a long time, it will still be myopia.
1. By converting the 220V, 50Hz AC signal into a high frequency signal by electronic processing, the effect of 100 strobes per second can be reduced.
Eye protection
2, white light similar to natural light, stable brightness, no flicker, will not cause eye fatigue.
3, the light-emitting area is large, it is not easy to produce glare and large-area shadows that are harmful to vision.
4, instantaneous bright spots, quiet and no noise after lighting.
5. Compared with ordinary incandescent lamps, it can save 80% of electricity, and the life of lamps can reach more than 6000 hours.
Eye protection entity diagram
The basic working principle of eye protection lamp is to raise the low frequency flash to high frequency flash. The eye protection lamp uses the frequency conversion electronic ballast to speed up the flashing speed and increase to flash thousands or even tens of thousands of times per second. The flashing speed exceeds the speed. The nerve reaction speed of the human eye, so learn and work under this kind of light, people will feel more comfortable in a short time. The above is a detailed introduction to the principle of eye protection lamp and the role of eye protection lamp, I hope to help everyone! For more details on the renovation strategy, please continue to pay attention to the network.
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