What is the best material for glasses lenses?
01
Resin lenses. It is made of an organic material. Its interior is a polymer chain structure, which is connected to form a three-dimensional network structure. The intermolecular structure is relatively relaxed, and there is a space between the molecular chains that can produce relative displacement. Light permeable The passing rate is 84%-90%, and the light transmittance is good, which is more suitable for the general public.
02
PC lenses. Its chemical name is Polycarbonate, which is an environmentally friendly engineering plastic. Its raw material is solid, and it is shaped into a lens after being heated. Therefore, the lens will be deformed after being overheated, which is not suitable for high humidity and heat. occasion. At the same time, PC lenses have strong toughness and are not broken, so they are also called safety lenses and are suitable for the general public.
03
MR lenses. Its polymerized monomer is an optical material, which has the characteristics of high refractive index, high Abbe number, low specific gravity, and high impact resistance. It is the first high-refractive-index lens material produced by polyurethane technology in the world. It is not easy to yellow and corrosion-resistant, and is suitable for the masses.
04
Glass lenses. Its main material is optical glass. Its refractive index is higher than that of the resin lens, so the glass lens is thinner than the resin lens at the same degree. The light transmittance and mechanical and chemical properties of the lens are relatively good, with a constant refractive index and stable physical and chemical properties. It is also a lens suitable for the general public.
05
Crystal glasses. Its transparency and clarity are very good, and the material is delicate, hard and durable, and it is not easy to be sanded in the wind and sand, so it is suitable for people in wind and sand areas. Crystal lenses do not absorb radiation and heat. For those engaged in high-temperature operations such as boilers and smelting, they can alleviate the impact and irritation of heat waves on the eyes. Crystals can withstand the corrosion of general acid solutions. People who work in chemical acids wear crystal glasses. Good eye protection effect.
