You are probably fairly familiar with the basic science behind sunglasses. They filter out harmful light rays and protect your eyes from intense light. However, the technology behind sunglasses and creating new designs may have a few more tricks up its sleeves. Even in 2007, sunglasses are reaching new heights of science and creativity.
If you are a corrective lens wearer, you will love this feature for sunglasses. No one likes having to change out glasses every time they move from indoors to outdoors. Additionally, you have to worry about losing your sunglasses while you wear your prescriptions, or vice versa.
Photo Chromic lenses are typical prescription strength glasses while you are inside. However, when you step outside into the light, they morph into sunglasses. The technology of the Photo Chromic lens is as sensitive to light as your eyes are. Unlike your eyes, however, these sunglasses will adjust in accordance with the magnitude of light to provide the necessary protection.
Sunglasses with lenses that transform automatically from clear to dark may not be particularly brand new information to everyone. They have been on the market for several years, and have now been revolutionized yet again. New sunglasses currently in development will change not only from clear to dark but also to shades of yellow, green and purple.
Not only will the transition occur much faster with these sunglasses, but they will offer many more options as well. They will be able to improve visual contrast, as well as brightening low-light conditions. Unlike traditional color changing lenses, these sunglasses will be controllable by the wearer. A small dial on the arm can take you through a spectrum of shades and tints.
The lens material will be made from a plastic can change its color and transparency when the sunglasses receive an electrical charge. The lens contains a gel-like solution in between the layers that helps transport charged particles. A watch battery delivers the charge. When the electricity is transmitted, the molecules change from transparent to a variety of shades and tints in seconds or less and your glasses become your sunglasses!
Visual effects are not the only advances made for sunglasses in recent years. Many product developers are beginning to see the need to further integrate technology and communication into everyday life. For this reason, you can now purchase sunglasses that are also your mobile phone. Since the advent of the headset, it is a common need for one that does not get in the way of your sunglasses. This new phone turned eyewear is an obvious solution to the problem.
Another extremely popular tech toy today is the MP3 player. Long gone are the days of the Walkman or even the Discman. The computer age has taken over all facets of our existence, including the music we listen to. Few individuals today are without an MP3 player. Heaven forbid we are caught anywhere without ever song we own to keep us company!
Following the desperate need we have to be surrounded by our music, sunglasses have been developed to accommodate us. Sunglasses with built-in speakers can be plugged into your MP3 player in the same way your ear buds could. If this is not hi-tech enough for you, pick up a pair of sunglasses that actually ARE the MP3 player. Simply download your tunes onto your sunglasses and take off down the road.
Science is constantly changing and developing exciting new inventions. Twenty years ago you never would have believed someone if they told you that you may be listening to music on your sunglasses. New developments are happening all the time, so don't be left behind. Pay attention to see what they come up with next.
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There are so many different types of sunglasses on the market today that finding the right pair to fit one’s needs can be a very daunting task. The best pair of sunglasses should offer protection from UV rays, be extremely durable, look good, and serve any special needs that the wearer might have. Once one has found the right pair, they should be so comfortable that the wearer may even forget that he or she is wearing them! There are a few elements to consider when buying sunglasses. Frame and lens options, sun protection, and the purpose of the sunglasses should all be considered.
The frame is essential because it holds the glasses together and provides comfort and stability. Frames have two parts with different functions. The glasses are kept firmly on one’s ears via the arms of the frame. The face of the frame keeps the lenses aligned with the eyes. There are three different types of frame materials: plastic, nylon, and metal. All of the materials have different positives and negatives. Plastic can usually be found in less expensive sunglasses. Unfortunately, plastic is a lot less durable and cracks more easily than other materials, so it is a good idea to use plastic reinforced with a metal rod in the arms. Nylon is a excellent choice because it is flexible, light and strong. If Nylon is bent, it has the ability to return to its original position. The final material for the frame is metal, which is also an excellent choice because it’s strong and lightweight. However, metal will bend and break more easily than nylon.
The hinge is the part of the frame that holds the arms and face of the frame together. The two types of hinge materials are metal and nylon. Both types of hinges are solid. Some hinges that are not as well made will make the glasses feel brittle and will have the tendency to not stay snugly on the wearer’s face. For this reason, higher quality hinges should be purchased.
The lens is the most important part of sunglasses. There are several different types of lenses. Lenses can vary in tint, material, and coating. Higher quality lenses are generally preferred because cheap lenses can distort images. A distorted image causes the eyes to strain. Over a long period of time, this can lead to prolonged headaches, nausea, and dizziness.
The types of lens materials are glass, cr-39, polycarbonate plastic, and acrylic plastic. The highest quality of these materials, and the material suggested for persons concerned about vision quality is glass. Glass lenses are also the most scratch resistant, but they are prone to shattering when hit. The other three types of materials are all plastic and impact resistant. Acrylic plastic must be specifically treated in order for it to protect the wearer from UV rays.
Lenses also vary in tint. A darker tint will absorb a significantly higher amount of light than a lighter tint. Different color tints also serve different purposes. An amber or orange tint will reduce blue light which is the chief component of glare. Therefore, these sunglasses are popular in sports that have a high amount of glare (boating, fishing, and skiing). Brown tints are good for driving, and Gray is good for golfing, running, or cycling. Different tints have different abilities to reduce glare. The best suggestion is to take the sunglasses use into consideration when choosing.
Finally, sunglasses have a variety of coatings. UV protective coatings are a must for sunglasses. The sun’s harmful UV rays can seriously damage eyes. Some sunglasses may have a dark tint, but do not have special coatings that protect against UV rays. Other coatings can help improve the scratch resistance on sunglasses. Additionally, mirror or flash coated lenses, and anti-reflective coated lenses can greatly reduce the amount of light absorbed and reduce glare or “halo” effects. Once again, the coating choice should depend on the intended use of the sunglasses.
Sunglasses are essential for people in a variety of situations. Casual sunglasses that are to be used when at the pool or beach do not have to be the most expensive sunglasses available. For most people, sturdy sunglasses that protect the eyes from UV rays and look good are more than enough. However, for anyone who is doing a sport that requires maximum visibility in sunny conditions, high-quality sunglasses are a must. Different lenses and frames can produce highly variant results. Anyone looking for sunglasses should understand in what context the sunglasses will be used, and then choose accordingly. An educated decision will usually result in one choosing sunglasses that he or she is very satisfied with.
Nathan Sauer enjoys outdoor sports and prefers Oakley sunglasses. To learn more about sunglasses, visit http://www.technical-gear.com.