Help with what materials are eyeglass lenses made of

1, metal materials

Metal materials used for eyeglass frames are copper alloys, nickel alloys and precious metals. It is required to have certain hardness, softness, elasticity, abrasion resistance, corrosion resistance, light weight, good luster and color and so on.

2, plastic or resin

The non-metallic materials used to manufacture spectacle frames are mainly synthetic resins as raw materials, which are divided into two categories: thermoplastic and thermosetting resins.

3, natural materials

The natural materials used to make eyeglass frames are tortoiseshell, special wood and animal horns. Generally, wooden eyeglass frames and horn frames are rare, and tortoiseshell eyeglass frames are common.

4.Mixed materials

Metal and plastic are mixed to make frames.

5, optical glass

The main raw material of glass lenses is optical glass, which has superior optical properties, good light transmittance and mechanical and chemical properties, constant refractive index and stable physical and chemical properties.

6, resin

Resin lenses have obvious advantages, its quality is light, more comfortable to wear; secondly, resin lenses have strong impact resistance, not fragile and safer; at the same time, resin lenses also have good light transmission.

Baidu Encyclopedia - Lenses