Posts Tagged ‘polycarbonate eyeglasses’

Polycarbonate Lenses Eyeglasses

June 18th, 2015

Polycarbonate lenses eyeglasses are eyeglasses with lenses made of polycarbonate, a durable, cheap plastic. Polycarbonate was developed in the 1950s and was soon recognized as a dynamic substitute for glass. In the 1980s, polycarbonate glasses were introduced to consumers as a safe, affordable alternative to standard plastic or glass eyeglass lenses.

Polycarbonate lenses have significant benefits over other forms of lenses on the market. In addition to their excellent impact resistance, polycarbonate glasses are up to 40% thinner and one-third lighter than standard plastic lenses. These properties make polycarbonate glasses ideal for people with high prescriptions. Polycarbonate glasses, however, are not perfect. As a result of their ability to absorb impact, the lenses are soft and therefore more susceptible to scratches. To compensate for this, scratch-resistant coatings have been developed and can be added to polycarbonate glasses to provide added durability. All safety eye wear is made from polycarbonate material as it provides the best impact resistance of any eyeglass materials available. Polycarbonate glasses are 10 times more resistant to breakage than plastic lenses. Lenses made of polycarbonate are highly recommended for children due to this safety benefit. Additionally, polycarbonate blocks 99% of UV light. This ability is an important feature, especially for children and individuals who work outdoors, as UV light is known to contribute to the development of cataracts.

Polycarbonate lenses are favored by athletes and by parents of young children because they are designed to not shatter when they receive a blow. Instead polycarbonate lenses are engineered to crack in a spiderweb pattern to prevent shards from the damaged lens from injuring the eye. Polycarbonate lenses are can be coated to help prevent scratching. But no matter how careful you are, occasionally even coated lenses may get scratched. Once your polycarbonate lenses were scratched, squeeze a dime sized amount of regular toothpaste onto a clean, soft, cotton cloth. Rub the toothpaste onto the scratched surface of the polycarbonate lens in a circular motion for ten to twenty seconds. Then dampen a clean, soft, cotton cloth in cool water. Rub the wet cloth over the lens to remove all of the toothpaste. Next, you need to dry the lens with a dry clean, soft, cotton cloth. Examine the lens to determine whether the scratch has been completely removed. Deep scratches or multiple scratches may require this procedure to be repeated.

Advantages of polycarbonate eyeglasses

July 29th, 2010

Eyeglasses sunglasses are allowed to be made with different frame and lens materials. The frame is supposed to hold the lenses stably and thus needs to be made with high quality. Meanwhile, eyeglass lenses involve a larger area and they are also important in terms of eye protection. In outdoor activities or sports involving risky factors, the lenses are even the key part that offers adequate protection. As a result, it is very important to choose an appropriate lens material, since eye protection is also critical in daily life. With the continuous development of lens technology, optional lens materials contain mainly regular plastics, glass and new forms of plastics. Glass is very rarely used in recent years because of its unpleasant weight. Regular plastics are still acceptable but are losing popularity due to their lack of superior optical features. Polycarbonate eyeglasses and glasses made of high index lenses are the most popular.

New forms of plastics including polycarbonate and high index materials have some advantages over traditional lens materials and this explains their dominant role in the current market. In particular, people with a strong prescription are perfect users of high index lenses because this material will never bring an excessive lens thickness. Well, our focus is polycarbonate eyeglasses because they have even more benefits. In general, polycarbonate lenses are thinner and lighter than lenses made of regular plastics. Used in sunglasses, polycarbonate lenses are perfect because they offer 100% UV protection by the lens material itself. This is not the end. Lenses made of polycarbonate are up to 10 times more impact-resistant than plastic or glass lenses.

Natural UV protection, lightness, thinness and extreme impact resistance make polycarbonate lenses an unparalleled option. It is nearly impossible to find another lens material with so many advantages. And these benefits lead to the prevailing role maintained by polycarbonate eyeglasses, especially among children and people who like outdoor sports. Children usually spend much time outdoors and need proper UV protection. Of course, lightweight polycarbonate lenses also help reducing the weight over children’s faces. For the second group, it is the valuable impact resistance that matters. Some sports involve flying objects or dangerous particles, making the use of impact resistant lenses a necessity.