There are two kinds of this kind of glasses, one is colored iron oxide and cobalt oxide, and the filament is purple red with it, and the other is colored with copper oxide and manganese oxide, and the filament is white with it. They can all absorb the dazzling glare in the 500-600nm (visible light sensitive area of the human eye), the light transmittance at 400nm is below 12%, and it also has a certain absorption effect on ultraviolet rays. It is suitable for various industrial high-temperature furnaces. Personnel wear.
Crimson glass goggles
This kind of spectacle lens is a deep red glass colored with cadmium sulfide and cadmium sulphur selenide, which can absorb all light with a wavelength below 600nm. It can be used as goggles for medical or industrial personnel operating X-ray fluoroscopy equipment.
Laser protective goggles
There are two forms of this kind of glasses, namely reflective and absorptive. The surface of the former adopts a vacuum coating method to coat a layer of metal film, and the reflectivity of the laser wavelengths at 532nm, 694nm and 1060nm is greater than 99.5%; the latter lens It can absorb all the 1060nm laser wave band. The lens must be equipped with a closed or semi-closed frame to prevent the laser from bypassing the lens and entering the eye. It can be used as protective glasses for laser operators.
Microwave protective goggles
Microwave is an electromagnetic wave with a wavelength of about 1nm-1M. It can also cause harm to people, especially eyes. Under the action of strong microwaves, it can cause eye fatigue, dry eyes and dizziness, and can even cause lens opacity, cataracts and retinal damage. It is protected by spraying tin tetrachloride on the surface of the lens and a metal compound that can increase conductivity, forming a multilayer conductive film on the surface of the lens, which plays a role in shielding microwaves.