As a large category of safety protective glasses, it is widely used in daily life, and as a large category of safety protective glasses, it is also divided into different types according to the different substances to be protected, according to different occasions. The use of different glasses requires different effects.
1. Protective glasses against solid debris are mainly used to prevent mechanical damage to the eyes such as metal or sand debris. Spectacle lenses and frames should be strong and resistant to shock. Covering edges are provided around the frame, and there should be ventilation holes. Protective lenses can be made of tempered glass, glued glass or copper wire mesh protective glasses.
2. Safety glasses against chemical solutions, mainly used to prevent chemical damage to the eyes from irritating or corrosive solutions. Ordinary flat lens can be used. 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.
3. Radiation-proof safety protective glasses, which are used to protect the eyes from radiation such as excessive ultraviolet rays. For example, common welding glasses require relatively low light transmittance, so the color of the lenses is mostly ink. Laser safety protective glasses, as the name implies, can prevent laser radiation from the glasses, so they have high requirements on the lenses, such as For the choice of light source, attenuation rate, light response time, optical density, light transmission effect, etc., different nanometer (nm) lasers need to use lenses in different wavelength bands.
The lens is made of special glass that can reflect or absorb radiation, but can transmit certain visible light. The lenses are plated with bright chrome, nickel, mercury, or silver metal films that reflect radiation; blue lenses absorb infrared, yellow-green lenses absorb both ultraviolet and infrared, and colorless leaded lenses absorb X-rays and gamma rays.