الوصف

The main raw material of glass lens is optical glass, which has superior optical properties, good transmittance and mechanical and chemical properties, constant refractive index and stable physical and chemical properties; Secondly, glass lenses have a high refractive index, and the highest refractive index commonly used for lenses is 1.9. Finally, glass lenses have high surface hardness and are more wear resistant.
However, due to the large weight of glass lenses due to material reasons, their wearing comfort is affected to some extent. In addition, glass lenses are fragile. Especially with the improvement of production technology and process of resin lenses, glass lenses are used less and less in recent years.