With the development of science and technology, energy saving, emission reduction and environmental protection have become the main theme. White LED lights emerge as the times require, which has greatly changed people's lives.
Nowadays, almost everyone's home is equipped with white LED lights, but do you know why LED lights will replace incandescent lamps and become popular in such a short period of time?
In addition to its application in lighting, white LED lamps have also appeared in other fields, such as automotive headlights, TV, computers, mobile phones, flat panel. Its appearance not only enables people to enjoy efficient and environmentally friendly lighting, but also greatly enriches our daily life.
hy LED lights will replace incandescent lamps and become popular in such a short period of time?
That's because LED lights have the following special advantages:
1. No stroboscopic. White LED lamp will not appear stroboscopic phenomenon, more stable light.
2. Green environmental protection. White LED lamps do not contain lead, mercury and other pollution elements.
3. Shock resistance. White LED lamps are more robust and less vulnerable to damage.
4. Low energy consumption. The energy consumption of white LED lamps is only one tenth of that of incandescent lamps and one quarter of that of energy-saving lamps.
5. Long life. White-light LED lamp has no shortcomings such as burnable filament light, thermal deposition, light decay and so on. Its life span can reach more than 100,000 hours.
However, do you know? White LED lamp also has some drawbacks. The blue light it emits will do harm to our eyes.
At this time, the little friends will surely feel strange, blue light? Doesn't the LED light emit white light? How did it become what you call blue light?
Let me answer your questions.
D lamp also has some drawbacks. The blue light it emits will do harm to our eyes.
At this time, the little friends will surely feel strange, blue light? Doesn't the LED light emit white light? How did it become what you call blue light?
Let me answer your questions.
The human eye sees that the light emitted by the LED lamp is white, but in fact it is not so-called white light, but actually blue light. Its principle is that the screen itself emits blue light after being electrified, and the light source emits yellow light after being coated with yellow fluorescent powder, and then mixes with the original blue light to form white light.
It can be seen from the above that white LED actually emits blue light, so that the harm of white LED here refers to the harm of high-energy blue light in white LED to human eyes.
In physics, we have learned that in optics, the wavelength is inversely proportional to energy. The shorter the wavelength, the stronger the energy. And because blue light is the active light source after electrification, its intensity will be 60% stronger than the other light stimulated by it, so it will form a luminous system distinct from the sunlight. And these high-energy blue light, will have a great impact on our eyes!
When people use LED electronic products, in order to see the content on the screen, the ciliary muscles around the eyeball will automatically shrink, hoping that the focus of blue light will focus on the retina. Over time, the muscles around the eyeball are prone to fatigue, blurred vision, visual fatigue, and even the so-called pseudomyopia. If not prevented, pseudomyopia will become true myopia, myopia degree will gradually deepen.
When the energy of high-energy blue light accumulates to a certain amount, it is easy to cause retinal damage and macular lesions, visual impairment and loss, because retinal cells do not have regenerative capacity, which will cause regret for a lifetime.
Therefore, although white LED has the advantages of green environmental protection, no strobe, impact resistance, low energy consumption and long life, its hidden dangers can not be underestimated. When we use electronic products, we should do: reasonable rest, do not use eyes for long; keep a certain distance from electronic products, because the eyes receive the light. The illumination is inversely proportional to the square of distance. The closer our eyes are to electronic products, the greater the damage to our eyes caused by blue light in electronic products. Finally, if you have to use electronic products for a long time, it is recommended that you wear anti-blue glasses!