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Ralph Lauren Sunglasses - Timeless Classicism at Its Best
By Stuart Wallace

If you are a person with a penchant for the latest happening trends then you must be having enough info about the numerous designer sunglasses brands that dominate the fashion scene today. Even more interesting are the stories associating each brands, how a particular brand started as a teeny-weeny venture of a visionary and expanded into a world renowned house. One such popular brand is Ralph Lauren.

Today, Ralph Lauren is synonymous with top quality and classic style evocative of the high society culture of the past. Ralph Lauren sunglasses give a semblance of timeless elegance and emphasize more on everlasting quality and style. They are for people who are not slaves to the ever changing fashion trends.

But the rosy picture that the reputation of the brand presents tells just the half story behind its success. In fact there is a rags-to-riches story behind the passion and dedication of the man, the inimitable Ralph Lauren himself.

A brief history over time

Born in Bronx, New York to Jewish immigrants Fraydl and Frank Lifshitz, Ralph Lauren sunglasses was highly passionate towards quality clothing and started his quest early for designer fashion by selling ties to his fellow classmates. In 1967, he introduced the Polo line of ties in collaboration with Hilton. Since then there has been no looking back and today, the Ralph Lauren name is celebrated for its endeavor towards excellence in turning out the best products for fashion conscious men and women- whether it be clothing, home décor or accessories like designer sunglasses.

Unique features of Ralph Lauren sunglasses

-All models are UV-400 rated which means the best anti-glare protection. Sunglasses which have lenses with UV-400 ratings provide 100% blocking from harmful blue light up to 400 nanometers.

-They are available in a range of sophisticated and funky colors, from sleek metal finishes to pink and aubergine shades.

-Available in different shapes and styles, the popular ones are aviators, wrap, square, oval and ribbon frames for both men and women.

-Other exclusive characteristics are polarized shades, mirror and gradient lenses etc.

The Ralph Lauren signature is a much vaunted one with fashionistas. Whatever be your preference, whether you are making your selection from the mens sunglasses line or women's sunglasses collection, an authentic pair will definitely up your glam quotient. You can consider the following models; they are the popular favorites in the current season- RL7011, RL7012, RL7018 and RL8001 sunglasses.

The Author of this article is an expert on the latest trends pertaining to designer sunglasses and eyeglasses. He has written many informative articles on various designer eyewear brands and products such as Diesel eyeglasses, Prada eyeglasses and Dior sunglasses. Know more at Flyrr.com.

Article Source: http://EzineArticles.com/?expert=Stuart_Wallace

Friday, December 31, 2010

Photochromic Sunglasses

Photochromic Sunglasses

The lenses which darken on exposure to ultraviolet (UV) radiation are known as photochromic lenses. In the absence of UV rays, the darkened lenses return to their transparent or clear state. When such lenses are prescribed to a person for usage, they are called photochromic sunglasses. They are also referred to as transitional or photochromatic lenses. The photochromic sunglasses are generally made of glass, polycarbonate, or some other kind of plastic.

The glass version of photochromic lenses was developed by Corning in the 1960s. Plastic versions of this type of lenses is also available. They are commonly meant for commercial usage. Such sunglasses benefit regular users of eye lenses a lot. It prevents them from carrying two or three pairs of eyeglasses while going out. You might be wondering how photochromic sunglasses change their color on getting exposed to UV rays. To learn about this along with some advantages and disadvantages of photochromic sunglasses, keep reading.

Photochromic Sunglasses: An Introduction
The reason behind the ability of the photochromic sunglasses to change their color from light to dark is its molecular structure and the effect of light on it. The polarized photochromic sunglasses contain millions of molecules of substances like silver chloride or silver halide. These molecules are transparent to visible light or in the absence of UV light. When they are exposed to UV rays, a chemical reaction take place which causes the molecules to change shape. The changed molecular structure absorbs portions of the visible light. This causes the lenses to get darkened. Therefore, polarized lenses are quite effective.

The number of the molecules which change shape differs from the intensity of the UV rays. When the photochromic sunglasses are no more exposed to UV rays, the reverse chemical reaction occurs. The sudden absence of UV light results in the snapping back of the molecules to their original shape. This, in turn, results in the loss of their light absorbing properties. In both the direction, the entire process of change in the molecular structure takes place quite quickly. The darkening of the glass is directly proportional to the intensity of the sunlight.

Photochromic Sunglasses: Pros and Cons
The photochromic lenses have both advantages and disadvantages. Their main advantage is that they get darkened like sunglasses on getting exposed to UV rays. They are particularly helpful to the people who ride motorcycle. Many motorcyclists are forced to carry 2-3 pairs of sunglasses or interchangeable lenses kits with clear, charcoal and amber color lenses. With photochromic lenses, they can buy and carry just one pair of sunglasses for all day and even for night as a replacement for night vision goggles. Therefore, the photochromic sunglasses eliminate the need to carry a separate pair of sunglasses for protecting the eyes against the harmful effects of UV rays of the sun. The disadvantage of photochromic sunglasses is that they do not adjust themselves to their darkened form immediately. They take about two minutes to completely change from clear to dark form or vice versa. There is one more disadvantage associated with photochromic sunglasses. It is that they don't get darkened when worn inside a vehicle. This is because, the UV rays are not able to pass through the glass of the vehicle.

As has already been indicated in this present article, photochromic sunglasses are available only on prescription. Therefore, if you wish to have a pair of it for better eye care, fix an appointment with your ophthalmologist. He will provide you with the best photochromic sunglasses, meant only for you!

By Kalpana Kumari
Published: 6/28/2010

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