Features of Polycarbonate Lenses
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Posted On :
Oct-18-2011
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Article Word Count :
368
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Given that its creation in 1970s, polycarbonate has become commonly employed in aerospace apps, helmet visors of astronauts and house shuttle windshields. Nowadays, this substance has been the common for security eyeglasses, total frame eyeglasses and guys eyeglasses.
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Given that its creation in 1970s, polycarbonate has become commonly employed in aerospace apps, helmet visors of astronauts and house shuttle windshields. Nowadays, this substance has been the common for security eyeglasses, total frame eyeglasses and guys eyeglasses. Polycarbonate lenses are thinner, lighter and ten times much more impact-resistant than conventional plastic lenses.
Polycarbonate lenses are created in a very way that is certainly fairly distinct from that of typical plastic lenses. Standard plastic lenses are made from a forged molding procedure. The manufacturing of the polycarbonate lens employs an injection molding approach, throughout which little pellets will be heated into liquid polycarbonate. Even more steps incorporate liquid polycarbonate injection and high-pressure compression. One more aspheric lens substance that also has comparable highlights of polycarbonate is Trivex. Using cast-molded way, Trivex lenses provide crisper eyesight and also have turn into a major rival of polycarbonate lenses.
Polycarbonate lenses also feature 100% UV safety resistance, with out the assist from UV treatment method. Although polycarbonate lenses are considerably effect resistant, it is also pretty gentle, which signifies they're able to absorb energy. This characteristic from the substance tends to make polycarbonate lenses fragile to scratches. Thus, scratch-resistant coatings are essential for polycarbonate lenses to supply required scratch protection. These scratch-resistant coatings enhance the hardness of polycarbonate lenses.
Another cherished residence of polycarbonate lenses is always that they aren't brittle. Even attacked by speeding objects such as balls or racquets, polycarbonate lenses will not break because of to their capacity to maintain up beneath influence. When it comes to typical plastic lenses, fast-moving objects can effortlessly broke the lens and damage the eye. Caused by this protecting attribute, aspheric lenses have grown to be the very first selection for children??s eyeglasses, sports goggles and safety spectacles.
During dangerous passe-temps, impact-resistant frames can also be essential to match polycarbonate lenses, given that the frames are nevertheless essential to carry the lenses. Basic polycarbonate lenses cannot provide sufficient resistance in opposition to substantial impact. In cases like this, polycarbonate lenses on regular frames usually are not risk-free. In fact, womens eye glasses are recommended for every type of youngsters??s eyeglasses.
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Article Source :
http://www.articleseen.com/Article_Features of Polycarbonate Lenses_93758.aspx
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Author Resource :
My name is Christy, and I love writing articles about everything in life, including offering information on eyeglass lenses. I have been in resin lens factories for a long time and I knew what lens is good. Anyway, I enjoy the feeling to share what I knew with you, and hope you will like it.
Besides writing, I also like drawing and playing table tennis, they are good ways to kill time.
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Keywords :
aspheric lenses, polycarbonate lenses, eyeglass lenses,
Category :
Arts and Entertainment
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Arts and Entertainment
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