Polycarbonate sheets are used in the field of optical lenses. Polycarbonate sheets play an extremely important role in this field due to their unique characteristics such as high transmittance, high refractive index, high impact resistance, dimensional stability, and easy processing and shaping. The optical lens made of polycarbonate board with optical grade polycarbonate can not only be used in cameras, microscopes, telescopes, and optical testing instruments, but also in movie projector lenses, copier lenses, infrared autofocus projector lenses, laser beam printer lenses, as well as various prisms, multi sided reflectors and other office equipment and home appliances. Its application market is extremely broad. Another important application area of polycarbonate in optical lenses is as a lens material for children's glasses, sunglasses, safety glasses, and adult glasses. In recent years, the average annual growth rate of polycarbonat…