Resin Lens_PC Lens_Glass Lens - Difference

The most used lenses in the lens market are: resin lenses, PC lenses, and glass lenses. Below is a brief introduction to you.

Resin lens is a kind of optical lens made of resin as raw material, which is processed, synthesized and polished by precise chemical process. At the same time, resin can be divided into natural resin and synthetic resin.

The advantages of resin lenses: strong impact resistance, not easy to break, good light transmission, high refractive index, light weight and low cost.

PC lens is a kind of lens formed by heating polycarbonate (thermoplastic material). This material is developed from space exploration, so it is also called space film or space film. Since PC resin is a thermoplastic material with excellent properties, it is especially suitable for making spectacle lenses.

Advantages of PC lenses: 100% ultraviolet rays, no yellowing within 3-5 years, super impact resistance, high refractive index, light specific gravity (37% lighter than ordinary resin sheets, and impact resistance is as high as ordinary resin sheets) 12 times the resin!)

The main raw material of glass lenses is optical glass. Its refractive index is higher than that of resin lenses, so under the same degree, glass lenses are thinner than resin lenses. The light transmittance and mechanical and chemical properties of glass lenses are relatively good, with constant refractive index and stable physical and chemical properties. The lens without color is called optical white lens (white lens), and the pink lens in the colored lens is called Croxel lens (red lens). Croxel lenses can absorb ultraviolet rays and have a slight absorption effect on strong light.

Glass lenses are more scratch-resistant than other materials, but they are relatively heavy, and their refractive index is relatively high: 1.523 for ordinary lenses, 1.72 for ultra-thin sheets, and up to 2.0.

Advantages of glass sheet: excellent optical properties, not easy to scratch, high refractive index. The higher the refractive index, the thinner the lens.