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plastic glasses, the great invention in the 20th century
Some industry professionals say optical plastic lenses were a great invention in the Century 20. Today most of the lenses used by almost 70% of the population are plastic. Especially with the increasing elderly population they need reading glasses plastic, this new momentum the total consumption of plastic glasses .
The glasses were made mostly of glass before the invention of plastic glasses. Glass lenses are heavy and easily broken, so are not safe for users, especially for children. Innovators in this area, then I started thinking about an alternative that is lightweight, safe and free of breakage. People thought plastics. In 1962, the Pittsburgh Plate Glass Company eventually discovered and developed a replacement for glass lenses. This was the beginning of resin plastic glasses. More Later, more types of even stronger and lighter plastic glasses.
There are a few advantages of plastic lenses. Lightweight, security, increased durability and low cost are the four basic benefits of plastic lenses. Light makes the use of plastic glasses more comfortable and comfort, especially for the elderly, the frequent removal of plastic reading glasses makes it possible without causing breakage. Additionally, plastic lenses are easy to accept inks and coatings of different ons. These supplements protect our eyes.
Note that plastics are also used in eyeglasses frame molding. plastic glasses in plastic frames covered with the widest variety of styles and fashions. For example, now there is no need for middle-aged people to feel ashamed of using readers as the reading style designer plastic metal glass lens can be accessed easily. Plastic glasses have truly changed the world of fashion and our lives.
Article Source: http://blog.firmoo.com/plastic-eyeglasses-the-big-invention-in-20th-century.html
About the Author
Firmoo's Blog is the information source in area of vision care, including eyeglasses, sunglasses, contact lenses, sports protective eyewear, vision error and diseases, vision surgery, ageing and kid's vision etc., solely sponsored by Firmoo.com, an emerging online optical store offering high quality eyewear at the lowest prices.Firmoo's return and refund policy make any purchase risk-free.


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