Blue light is part of the natural visible light, and both sunlight and electronic screens emit blue light. Blue light is an important part of visible light. Nature itself does not have a separate white light. Blue light is mixed with green light and red light to show white light. Green light and red light have low energy and are less irritating to the eyes. Blue light has a short wave and high energy, which can directly penetrate the lens and reach the macular area of the eye, leading to macular degeneration.
Technology used in anti-blue glasses
1. Substrate absorption: The anti-blue light factor is added to the lens substrate to absorb harmful blue light in life and achieve the protection purpose of blue light blocking.
2. Film reflection: the surface of the lens is coated with a film to reflect harmful blue light through the film to achieve the protection purpose of blue light blocking.
3. Substrate absorption + film reflection: This technology combines the advantages of the first two technologies, two-pronged, for double-effect protection, this technology is mainly used in Mingyue lens anti-blue glasses.
Anti-blue glasses are suitable for wearing when using LED digital display devices such as TVs, computers, PADs and mobile phones, but it is not recommended to wear anti-blue glasses for a long time in daily life, because anti-blue glasses filter some blue light, and the picture will be yellow when viewing objects.