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Blue light is a part of natural visible light, and both sunlight and electronic screens emit blue light. Blue light is an important component of visible light, and there is no separate white light in nature. When blue light is mixed with green and red light, it appears as white light. Green and red light have lower energy and less irritation to the eyes, while blue light has shorter waves and higher energy, which can directly penetrate the lens and reach the macular area of the eye, leading to macular degeneration.
Anti blue light glasses can effectively reduce the sustained damage of blue light to the eyes. Through comparative testing with a portable spectral analyzer, the intensity of blue light emitted by mobile phone screens is effectively suppressed after using anti blue light glasses, reducing the harm of harmful blue light to the eyes.
Anti blue light glasses mainly reflect harmful blue light by coating the surface of the lens, or absorb harmful blue light by adding anti blue light factors to the lens substrate, thereby achieving the blocking of harmful blue light and protecting the eyes.
All anti blue light lenses using film reflection technology will reflect harmful blue light on the surface of the lens, while anti blue light lenses using substrate absorption technology will not reflect blue light