The Merits Of Plastic Lens

There are mainly two kinds of lenses that can be employed to make eyeglasses: traditional glass and plastic lens

. As for history, plastic lens is much younger than traditional glass. Plastic lens did not come into being till a century ago. In then time, the earliest form of lenses are crystal glasses. However, they are too expensive, and only a few people can afford such sort of glass lenses. Then, when it came to the 20s and 30s of 20th century, some materials have been used in the making of airplanes. These materials are so special that people decide to employ them to manufacture plastic lenses. And there comes a transition from traditional glasses to plastic lenses in glasses industry.

Therefore, a period of plastic lens approaches. As the new technologies have been applied into the inventions of eyeglasses materials, more and more advanced plastic lenses come forth.

Some people may wonder why plastic lens maintain such rapid expansions. The reasons lie in the fact that plastic lens have some special functions. Plastic lens is lightweight. The materials of plastic lenses are mainly organic, of which polycarbonate is a typical example. They are much lighter than traditional glasses. Such sort of plastic lens can ascertain the wearers will not feel uncomfortable for the sake of weight.

Plastic lens can protect wearers eyes from external force. It is very common that wearers may make their glasses impacted by external forces. Some peoples eyes are even seriously injured from the shattering of lenses. Plastic lens will not break into piece even cracked by forces. Hence in terms of safety, many people choose plastic lenses.

Plastic lens is not easily scratched. Lenses are very hard to keep. One of the worst problems is they are prone to be scratched. Accordingly, some anti-scratch coatings are applied on plastic lens. Thereby, plastic lenses are very outstanding scratch-resistant products.

by: MarkBurnsy

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