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that make up a photochromic lens react only to UV rays, and this is the reason behind their change when exposed to the sun.
Mirrored Lenses – How do mirrored lenses get their signature chromed looks? An ultra thin metallic coating is applied to all mirrored lenses,LV Monogram Denim, and this is how they achieve their mirror like shine. Most of the time, only about half of the reflective layer needed for 100% light filtering is applied. What this equates to is that about half of the light that hits mirrored lenses will get through. Some mirrored shades even have graduated mirroring –- The top usually being the heaviest, thus blocking more of the sun from above.
Anti-Reflection Coatings – One of the many coatings sometimes applied to sunglasses, the anti-reflective coating stops back glare. Back glare is from light that comes from behind the wearer, reflecting off the inside of the lenses, and causing an annoying glare.
Scratch-Resistant Coatings – Unfortunately, optical quality plastics are generally not as scratch resistant as glass – Especially polycarbonate. What a scratch-resistant coating does is prolong the life of a pair of lenses. Generally a scratch-resistant coating is simply an optically clear hard film, which can take more of a beating than CR-39 or polycarbonate plastics.
UV Coating – Most sunglasses available provide a lot of UV protection,UGG Sundance Boots, which is exactly what you want. Prolonged UV radiation can cause a whole host of problems which can simply be stopped by wearing sunglasses. Make sure your sunglasses block at least 99% of UVA and UVB rays,ugg bailey boots!
Being able to distinguish the difference between the many lens technologies currently available isn’t just great for coffee table talk –- Knowing the difference can literally save your eyes.
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dedicated to providing only the best aviator glasses information.
Cody believes in quality, and this free resource proves it.
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