Classification of absorption goggles
Absorption filters use lenses to absorb certain wavelengths of light to reduce the intensity of light entering the eyes.
There are light green, light gray, light tea and other colors, used to make sun-shading and snow work protective glasses. Among them, light gray lenses have the least effect on color recognition; light tea glasses make the blue sky look darker and reduce the transmission of green light; light green lenses reduce the transmission of red light.
Goggles for gas welding
The colorants used in this lens are mainly iron oxide, cobalt oxide, etc., which are yellow-green in color and can absorb all light waves with wavelengths below 500 urn. The visible light transmittance is below 1%, and only a small amount of infrared rays can pass through. This kind of glasses is specially used for welding in gas welding operation.
Goggles for welding
Ultraviolet rays generated by electric welding will cause damage to the cornea and conjunctiva tissue if it is irradiated to the eyeball for a short time. The strong infrared rays produced can easily cause opacity of the eye lens. Welding goggles can block the above infrared and ultraviolet rays very well. This kind of lens is based on optical glass and uses coloring agents such as iron oxide, cobalt oxide and chromium oxide. In addition, a certain amount of cerium oxide is added to increase the absorption of ultraviolet rays.