A Cooler Shade: The World of Blue Sunglasses
July 5th, 2010 | 
Author: Summertime is when the sun is highest and when people buy sunglasses. The reasons for buying shades are many and varied. It may be as basic as protecting the eyes from the sun; to add to one’s collection; wishing to appear trendier and wanting the latest in the market; to match to one’s wardrobe; or, perhaps, just wanting one in every color.
Blue sunglasses are a popular accessory for people in different sects of society. It is considered stylish if you have, at least, one in this color. But have you wondered what goes into making sunglasses? What materials are used? Are you curious to know whether or not you are allergic to them? Are blue sunglasses only good for cosmetic reasons? Or do they actually serve a purpose? Let’s take a closer look.
Sunglasses are composed of two (2) things: a pair of lenses, plus a frame to hold them steady.
Lenses are made of either glass or plastic. Glass is the earliest material applied in making lenses. Today, it is still being used and preferred by high-end brands because of its high quality, zero distortion, and accuracy. Due to technological advances, today’s glass lenses are even more 
resistant to scratches. However, they are heavier than plastic lenses.
Plastic lenses (made from acrylic, polycarbonate, CR-39 or polyurethane) are popular especially for the sports sect. They are durable yet lightweight. Because they are resistant to shattering, it’s ideal for impact protection.
Colors are applied to lenses to help absorb or reflect light of certain frequencies as it passes through the lens. The color one chooses is a matter of personal taste. But be careful because tinted lenses can come at the cost of some color distortion (which affects driving or looking at traffic lights). Nonetheless, there are also color-related benefits.
Blue-colored lenses, in particular, are not just there for cosmetic reasons. They are best for partly cloudy or sunny situations. They provide just the right amount of tint, yet still allow the maximum amount of available blue light from the sun. Blue and purple lenses are preferred and often used when playing tennis, winter sports, and even golf.
Frames are made from many different materials. Those frequently used are metal, plastic and titanium. Metals are the earliest material used for making frames. Some expensive ones are often made from mixing nickel with other metals like silver. Metal frames can be rigid, but they help fix the sunglasses firmly onto the wearers’ heads. But they can get bent out of shape when not properly handled.
Plastic is a popular material for frames. They are lightweight and allow great comfort. But break when pressure is applied to them. Fortunately, modern advances discovered a way to improve this and make it more flexible, bend slightly and return to shape rather than breaking.
The use of the “space age metal,” Titanium, is one of the latest innovations used in making frames. It has the combined qualities of plastic and metal – durable and strong, yet lightweight.
This article does not contain all the details regarding blue-tinted eyewear and the materials used to make it. It is advised to visit authority websites, like http://firmoo.com , to get valuable information.
Related Posts:
Posted in Blue Sunglasses | 
Tags: Blue and purple lenses, Blue sunglasses, Blue-colored lenses, blue-tinted eyewear, frames, sunglasses