Blue light glasses really do protect your eyes. Anti-blue light glasses are a kind of glasses that can prevent blue light from irritating the eyes. Specialized anti-blue light glasses can effectively isolate ultraviolet rays and radiation and can filter blue light, suitable for use when watching computers or TV.
There are two working principles: one is to absorb blue light and the other is to reflect blue light.
The technology of absorbing blue light is called substrate absorption, that is, by adding anti-blue light factor in the lens material, when the harmful blue light passes through the lens, the internal anti-blue light factor will absorb the harmful blue light, so as to realize the anti-blue light.
The technology of reflecting blue light is officially called film reflection, which is an optical film coated on the surface of the lenses, and this optical film can reflect the harmful blue light wavelengths through the interference of light, thus realizing the effect of anti-blue light.
What is blue light?
Blue light is an important part of visible light. There is no separate white light in nature itself, and blue light mixed with green light and red light presents white light. Short-wave blue light is the wavelength between 400nm-480nm with relatively high energy light. Blue light within this wavelength increases the amount of toxins in the macular area of the eye, leading to macular degeneration, which is a serious threat to our under-eye health. Blue light is found in large quantities in light from computer monitors, fluorescent lights, cell phones, digital products, displays, LEDs, and more.