Not all sunglasses are created equal, just as not all cameras, microwaves, cars, etc. are as good as others. Although most sunglasses now offer UV ray protection, there are different classifications of UV proection, just as in suntan lotions. Many of the cheap sunglasses offer the least protection, and use a spray-on film on the surface of the lens to achieve this. This allow the protection to scratch or wear off. Quality sunglasses have this technology integrated into the lens itself. Additionally, most cheap sunglasses to not offer polarization, a feature which allow much of the sun's glare to be filtered out. The cheap ones that do claim this also use a surface layer for the polarization.
No, sunglasses are not transparent. Their lenses are designed to reduce the amount of visible light that passes through, providing protection from glare and harmful UV rays.
Replica sunglasses are usually cheaper "copies" of authentic branded sunglasses such as Gucci, Diesel or Prada etc. Replica sunglasses can vary in quality. If you purchase a pair of replicas from a market stall or from a "$2" shop, the chances of your sunglasses meeting the UV protection safety standards are very slim. In Australia, there are currently 5 categories based on the amount of light that the lenses absorb with 0 (zero) providing minimal protection from UV radiation and sun glare and 4 providing a high level of protection. The most common authentic/designer sunglasses available will have either a category 2 or 3 lens. A category 4 lens may be too dark to use for driving and may come with a warning. All designer sunglasses are required to supply information for their lenses so that the consumer knows how much protection they'll be getting. Because of these regulations, it is safer for the consumer to purchase their sunglasses from a reputable company rather than from a market or a "$2" shop where the products aren't properly regulated.
Sunglasses with lenses that have a higher level of darkness (darker tint) or a higher level of UV protection capability are typically most effective at blocking light. Look for sunglasses that are labeled with 100% UV protection to ensure you are getting the best defense against blocking light. Additionally, sunglasses with polarized lenses can also help reduce glare and block a significant amount of light.
Sunglasses are fashionable, and they also provide protection for your eyes against harmful UV rays. Wearing sunglasses when you go out will help in reducing the risk of developing cataracts and other eye problems caused by overexposure to the sun. Sunglasses have been around for quite some time, and depending on the latest trends, they vary in size, shape and style. However, despite the differences and the wide array of choices, you need to keep in mind that it would be best if you purchase sunglasses that will match the shape of your face. Follow these steps to pick the right pair: • Determine your budget. Before choosing the right sunglasses for you, you need to determine your budget. Know how much you are willing to spend for your sunglasses, so that it will be easier for you to choose the sunglasses within your range of budget. • Determine the shape of your face. Once you have already determined your budget, you need to know the shape of your face, so that you can avoid the types of sunglasses that won’t look good on you. • Check the styles of sunglasses that will compliment the shape of your face. Once you have determined the shape of your face, you can check out the sunglasses that will compliment your face. If you have a round face, it would be ideal to choose sunglasses with square frames or rectangular frames. If you have an oblong face, you are lucky, because just about any style of sunglasses will look good on you. • Choose sunglasses with the right amount of sun protection. You don’t have to get very dark sunglasses, but rather you should consider sunglasses with the right amount of sun protection in order to protect you from the harmful UV rays. Aside from local shops, you can also purchase your sunglasses online. Try checking out online stores that sell sunglasses with sun protection. Despite the trend, it doesn’t look good to wear extra large sunglasses, because they will just make your face look smaller.
1) all "sunglasses" reduce the amount of light to the eyes. 2) "glare" is mainly light reflections ... some of which have become polarized. 2b) thus polarized sunglasses MAY reduce glare under certain conditions.
Earmuffs (over-the-ear protectors) offer the greatest amount of protection.
the color of the lenses doesn't matter. It's the amount of protection on them. Often there is a sticker on the lens when you first buy the sunglasses that will tell you the amount of protection they offer. The higher percentage, the better!
No, sunglasses are generally designed to be opaque to block out sunlight. Translucent objects allow some light to pass through, while sunglasses are meant to reduce the amount of light reaching the eyes.
Polarized sun glass lenses are made to neutralize the effect of glare. A 'glare' is caused when the sun's shining rays reflect off a solid surface or water. A 'glare' is typically horizontally polarized. And the lenses are made of vertical polarizes so that they will effectively neutralize the villainous glare! Advantages of Polarized Sunglasses: Polarized sunglasses are specially made for reducing the harmful effects of glare and eye-damaging light. And they are a perfect boon, for all your outdoor activities. http://www.sunglassreplicas.com/Polarized_Sunglasses_s/50.htm i don't know much about self-tinting sunglasses.
Blaze protection, or fire protection is an enchantment applied to armor. It reduces the amount of damage done by fire and lava.
Ever so negligibly. If the protective coating is scratched a bit in places, you'd probably have a smidgen of UV rays drifting in. However, glass alone provides a modest amount of UV protection. It shouldn't be much to worry about.
Sunglasses block light through the use of a dark tinted lens that absorbs or reflects a significant portion of incoming light, reducing the amount that reaches the eyes. The lens material and coatings help to reduce glare and brightness, making it more comfortable for the wearer in bright conditions. UV-protective coatings on sunglasses can also block harmful UV rays from reaching the eyes.