subject: Polarized Sunglasses Can Transition Into Protection [print this page] Transition sunglasses, also known as photochromic sunglasses, are known by that name because of their ability to transition from dark when outdoors to light when indoors. In fact, the term photochromic is defined as being capable of changing color on exposure to radiant energy. So how do transition sunglasses work? What substance or material makes these types of lenses transition? Are they expensive or do you have to go through special steps to get them? These are just a few of the many questions that people have about these types of lenses, so here is a start to understanding more about them.
These types of sunglasses have lenses that have many molecules which are embedded in them, which are transparent to visible light when there is no UV light available. This means that the lenses are going to be light. When UV rays are present, those molecules start to react to it and will start to change shape. When this happens, the molecules absorb some of the visible light, which causes those types of lenses to darken. The brighter the sunlight is, the darker the lenses become.
Most people who buy transition sunglasses are those who need prescription eye wear that would not be able to wear sunglasses because of the frames that they need to wear to see everyday. With these special photochemistry lenses, they can wear corrective eye wear indoors and out without having to worry about changing pairs or switching and not being able to see! There are many people who can not wear sunglasses unless they are prescription eye wear, so instead of keeping separate pairs for regular glasses and sunglasses, they just keep the one pair of transition sunglasses.
If you are ready to try the photochromic sunglasses, you will find that it will be much more convenient than trying to keep track of two or more pairs of eye wear, switching back and forth between them all the time. All you have to do to get these popular lenses is to pick out the frames you want, buy the photochromic lenses and have them shaped to fir together.
In addition to those who wear prescription lenses, transition sunglasses are popular with those who ride motorcycles so that they do not have to keep fumbling with multiple pairs of eye wear. They can keep riding from morning until past dark and through the night with this type of lens. If you are interested in this type of eye wear, beware of cheap imitations, because oftentimes the cheap ones are much slower to change than the higher end transition sunglasses.
