The classification of the safety glasses

1. Safety glasses against solid debris are mainly used to prevent mechanical damage to eyes caused by metal or gravel debris. Spectacle lenses and frames shall be of strong structure and resistant to impact. The frame shall be provided with a cover around it, and there shall be ventilation holes on it. The protective lens can be toughened glass, glue bonded glass or copper wire mesh.

2. Safety glasses against chemical solution are mainly used to prevent chemical damage to eyes caused by irritating or corrosive solution. Ordinary flat lens can be selected, and the frame shall be covered to prevent solution splashing. It is usually used in laboratories, hospitals and other places, and general medical glasses can be used.

3. Anti radiation safety glasses are used to protect eyes from excessive ultraviolet radiation. The lens is made of special glass that can reflect or absorb radiation, but can pass through certain visible light. The lens is plated with bright chromium, nickel, mercury or silver metal film, which can reflect radiation; The blue lens absorbs infrared rays, the yellow green lens absorbs ultraviolet rays and infrared rays at the same time, and the colorless leaded lens absorbs X-rays and infrared rays γ Ray. For example, the common electric welding glasses have relatively low requirements for the transmittance of the lens, so the lens color is mainly ink; As the name suggests, laser protective glasses can prevent laser radiation to glasses, so they have high requirements for lenses, such as the selection of light source, attenuation rate, light reaction time, optical density, light transmission effect, etc. different nano (nm) lasers need lenses of different bands.