Protective glasses are a kind of filter lens that can change the transmitted light intensity and spectrum. The most effective and common way to avoid radiant light damage to the eyes is to wear protective glasses. This kind of glasses can absorb some wavelengths of light, and let other wavelengths of light pass through, so they all present a certain color, and the color presented is the color of the transmitted light. One is absorption type, one is reflection type, and the former is used most.

Goggles are a kind of glasses that play a special role, and the glasses that are used in different situations are also different. Such as surgical glasses for hospitals, welding glasses for electric welding, laser protective glasses for laser engraving, etc. Protective glasses, also known as labor insurance glasses, are divided into two categories: safety glasses and protective masks. Sputter damage. Changwei engineers summed up the two types:

Types of safety glasses
1). Protective glasses against solid debris are mainly used to prevent mechanical damage to the eyes such as metal or sand and gravel debris. Spectacle lenses and frames should be structurally strong and resistant to impact. There shall be a fringe around the frame, which shall have ventilation holes. Protective lenses can be selected from toughened glass, glued glass or copper wire mesh protective glasses.
2). Protective glasses against chemical solutions are mainly used to protect the eyes from chemical damage caused by irritating or corrosive solutions. Ordinary flat lenses can be used, and the frame should be covered to prevent the solution from splashing. Usually used in laboratories, hospitals and other places, general medical glasses can be used for general use.
3). Anti-radiation protective glasses, which are used to protect the eyes from excessive ultraviolet radiation and other radiation. The lens is made of special glass that can reflect or absorb radiation, but can transmit certain visible light.
The lens is coated with bright chromium, nickel, mercury or silver metal film, which can reflect radiation;