How to choose the material for glasses lenses?

Dear friends, when you choose glasses, do you often wonder how to choose the material of the lens?

Today I sharing you a new knowledge

Actually, it is not difficult to choose good glasses. First of all, we have to consider the material of the glasses. Different materials have different effects.

Here are some of the most common eyewear materials:

①Glass (heavy/fragile/wear-resistant)

Glass lenses are characterized by high clarity and high hardness. The disadvantage is that they are easy to break and are relatively heavy. Now we generally do not recommend buying this kind of lens.

②CR39 lens (lighter / less brittle / more wear-resistant)

Resin lenses are currently used the most and are high-quality materials. The advantage is that it is relatively light, impact-resistant, and not easy to break. At the same time, it absorbs ultraviolet rays better than glass lenses, and can also add anti-ultraviolet elements.

③PC (very light / not brittle / not wear-resistant)

PC lenses are polycarbonate, which is a thermoplastic material. The advantage is that it is lighter and safer. It is suitable for rimless glasses. It is generally suitable for the production of sunglasses, that is, the sunglasses of flat mirrors.

④Natural lenses (hard and wear-resistant)

Natural lenses are rarely used now. For example, quartz has the advantages of high hardness and wear resistance, but the disadvantage is that it cannot fully absorb ultraviolet and infrared rays.

So friends, if you wear glasses, it is recommended to use resin lenses. This material is also widely used at present~~