The peak spectrum of the LED lamp is generally between 450-480, so if it is illuminated in normal conditions, it will not cause damage to the human eye. In animal experiments, it was found that some blue light wavelengths can inhibit the occurrence of myopia, and the claim that blue light causes macular degeneration can only be obtained indirect evidence from epidemiological investigations. 450-480nm, conventional general lighting environment.
The influence of blue light belongs to the category of photochemical damage. Thermal damage exists in the infrared region. Because the temperature of the retina of our human eyes is 37 degrees, excessive heat will cause cell apoptosis. In the range of 400-500nm, blue light actually has photochemical effects on the retina. There is a big difference. In the range of 400-440nm, the tolerable light intensity of the retina is lower, while the tolerable light intensity of 450-480 is more than 3-5 times that of the previous one.
will not cause damage to the retina of the human eye. If it is 400-440, the light tolerance of the retina of the human eye is very low. The blue light of some rotten LEDs is in the 400-440nm wavelength range, so there is a problem.
The damage caused by blue light to human eyes mainly comes from two types of products. The first type is direct-lit LED light screens, which have now entered indoors from outdoor advertising screens. At present, surveillance has been adopted in a large area, and the education system has also been prepared some time ago. The introduction of this screen is the most harmful.
The second category is individual lighting and flashlights. Because these lighting products are close to human eyes and have high light intensity, there are certain safety risks. When using it, try to avoid the light source directly to the eyes. In fact, 400-440nm is harmful to human eyes under conventional lighting environment. We have found through cytomolecular experiments that cell apoptosis will occur after 2 hours of irradiation.
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