Optical lens has a stable optical properties, the main materials are colorless optical glass, colored optical glass, infrared optical materials, crystal materials, glass materials and plastic materials, such as a variety of optical materials.

The optical homogeneity of the optical lens is not consistent with the refractive index of each point in the same piece of glass, which is caused by the uneven temperature in the annealing furnace. Light through a refractive index inhomogeneous glass, can make each part of the optical path produce irregular change, thus affecting the imaging quality of the optical system.

Due to all kinds of new varieties of optical lens in the processing or use of the performance of more or less defects, so in the expansion in the field of optical glass, in order to improve the physical and physicochemical properties of all kinds of new varieties of optical glass. As well as the production process carried out a lot of work.