polycarbonate lenses meaning

This means that they can provide 100% UV protection. Standard polycarbonate bifocal lenses for reading and distance vision viewing means that the reading area has a half moon shape with a "flat top", in the bottow area of the lens. Polycarbonate was first prepared in 1953 by Dr.H.Schnell of Bayer AG, Germany and by D.W. Fox of General Electric Company, USA. If you're unsure whether your lenses are polarized: Take your sunglasses to the drugstore and grab a pair of polarized sunglasses from the shelf. Polycarbonate lenses are a good “thin” choice for prescriptions up to +/-5.00. Aspheric lenses have complex curved surfaces that gradually changes in curvature from the centre of the lens to the outer edge. When eye safety is a concern, polycarbonate or Trivex lenses usually are the best choice for your eyeglasses, sunglasses and sports eyewear.. polycarbonate lens meaning and how its different from plastic lens . Conventional cover lenses are generally made of glass. 1.59 Index Lens Lenses with this index are made from special polycarbonate materials. If your prescription is higher than that, you would achieve a thinner and lighter lens by selecting a lens with a higher index, 1.67 or above. Compared with polycarbonate lenses, Trivex® is a premium material that provides crisper vision and is 10% lighter. Story: Say hello to the Lesmore.As the name invokes, it’s a perfect combo of less and more, meaning you get a frame free of glitz and chock full of things you really need—like a modern silhouette, polycarbonate lenses and an array of colors to … The standard polycar Crystal Vision polycarbonate bifocal lenses for reading and distance vision viewing means that the reading area has a half moon shape with a "flat top", in the bottow area of the lens. Polycarbonate is still lighter, and can be made in higher index - meaning that a strong prescription lens can still be quite thin. While they’re not the thinnest kind of lens out there, they still retain their position as the swiss-army-knife of eyewear lenses. Whereas conventional lenses have a front surface that is spherical, meaning it has the same curve across its entire surface, much like a football. When it comes to lenses, you’ve got options: tinting, mirror coating, gradient, transition, polarized or non-polarized, and, of course — lens material. As a manufacturer for polarized lenses,we got many questions from our customers about the advantages and disadvantages of different lens materials.Below are my personal opinions to … Ideal for Safety. Most lenses in glasses today are made of CR-39 plastic, or very close copies (since the material is owned by PPG). 1.59 index offers optical clarity and also 100% UV protection. Since polycarbonate lenses naturally filter out UV light, they do not need any additional coatings. polycarbonate lens are also known as impact resistance lens, polycarbonate lens does not break easily. The first type of coatings that were applied to polycarbonate were so resistant to tints that obtaining a sunglass shade was almost, if not, impossible. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. Polycarbonate lenses (often abbreviated as PC), are the most common lens type and considered the industry standard. Similar to polycarbonate, Trivex lenses are thin, lightweight, impact-resistant, and provide 100% UV protection. As a result, the image you see with polarized lenses is a bit darker than usual, but objects look crisper and clearer, and details are easier to see. Several months in the making, finally, we do a side-by-side comparison of the Trivex and polycarbonate lens materials. 1.59 Index Lens – Polycarbonate Lenses Polycarbonate lenses were initially used for safety glasses and now this material is actively used in making kids glasses, sports glasses and for almost every prescription. Find out what is the most common shorthand of PolyCarbonate on Abbreviations.com! A wide variety of polycarbonate raw material options are available to you, such as graphic design, none, and others. This is unlike CR-39, which does not fare so well with higher prescriptions. Lesmore Polarized. This special material is an alloy of polycarbonate and metal and used in the construction of the lens barrel. To tint polycarbonate lenses one must tint the scratch coating and the better the scratch coating the harder it is to tint. If the combined lenses turn … The Web's largest and most authoritative acronyms and abbreviations resource. They also offer 100 percent protection from the sun's harmful UV light and are up to 10 times more impact-resistant than plastic or glass lenses. These lenses are thinner and stronger than lenses with a 1.5 index and can deal with prescriptions with an SPH correction between +/- 5.00 and +/- 4.00 and a CYL correction of +/- 3.00 and lower. Polycarbonate lenses already provide 100% protection from the UV rays of the sun. Both polycarbonate and Trivex lenses are thinner and lighter than regular plastic lenses. On the flip side, polycarbonate does not conduct heat well, meaning it can actually affect the performance of the phone under a heavy workload. Polycarbonate also has very good heat resistance and can be combined with flame retardant materials without significant material degradation. For some clarity on which lens material is best for you, let’s have a little face-off between the generations-old glass and the (relatively) young upstart polycarbonate. Another example of plano lenses are colored contacts. Place the lens of your sunglasses at a 90-degree angle to the lens of the drugstore sunglasses. If you don’t know what type of lenses you have, they’re probably polycarbonate. Polycarbonate, unfortunately, is very resistant to tints. These lenses are super-thin but are also more expensive than the polycarbonate option. However, Trivex lenses offer sharper central and peripheral vision than polycarbonate lenses, but are not as widely available in as many lens types. The lenses will block out all the horizontal light waves bouncing off a smooth pond or a shiny car hood, for instance. Because of their resilience, polycarbonate lenses are great for kids, offering extra safety. This must be free of streaks and bubbles. Uv rays of the lens barrel lenses one must tint the scratch coating the harder is... Lens type and considered the industry standard impact resistance lens, polycarbonate lenses one must tint the coating. 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