Blue light is an important part of visible light, and there is no single white light in nature. White light appears when blue light is mixed with green light and yellow light. Green light and yellow light have low energy, little irritation to eyes, short blue light wave and high energy, which can directly penetrate the lens and reach the fundus retina.

Radiation-proof glasses are made by adding some composite substances in the lens processing process and sticking relevant radiation-proof films on the lens. Because computer radiation is caused by electromagnetic waves, generally speaking, electromagnetic waves have a certain amplitude and wavelength. The composite medium and anti-radiation film of anti-radiation glasses use this principle to achieve the purpose of anti-radiation by using electromagnetic waves of different wavelengths to interfere with each other.

Glasses are lenses embedded in the frame and worn in front of eyes to improve vision, protect eyes or play a decorative role. Mirrors can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia or strabismus.

Glasses consist of lenses and frames. Myopia glasses, hyperopia glasses, presbyopia glasses and astigmatism glasses. There are also special glasses for viewing 3D stereoscopic images or virtual real images. Glasses Other kinds of glasses include goggles, sunglasses and goggles. , provide all kinds of protection for the eyes.