Introduction

The main raw material of glass lens is optical glass. The transmittance and mechanical and chemical properties of glass lens are relatively good, with constant refractive index and stable physical and chemical properties.

Therefore, the glass lens is thinner than the resin lens at the same degree. The glass lens has good transmittance and mechanochemical properties, constant refractive index and stable physical and chemical properties. The lens without color is called optical white (white), and the pink lens in the colored lens is called Croxel lens (red). Croxel lenses can absorb ultraviolet rays and slightly absorb strong light.

The glass sheet has excellent optical properties, is not easy to scratch, and has high refractive index. The higher the refractive index, the thinner the lens. But the glass is fragile and the material is heavy.