Ray-Ban uses four several types of lenses with regard to their sunglasses. The B15 XLT lens, the ray ban sale, polarized lenses and normal lenses, which we won’t discuss here because there’s nothing special about the subject (they only can be found in different colours).
Ray-Ban B15 XLT lenses are brownish in colour, block 100% of all UV rays and permit only 15% of your visible light to pass through through them (that’s an 85% reduction!). These brown lenses also offer a bit more contrast by lowering on the level of blue light, rather than a G15 lens (which happens to be described in the next paragraph). Blue light is extremely easily captured through the eye and possesses the result of softening other colours that happen to be harsher to your vision. Put simply, by reducing the volume of blue light, the differences between colours and brightness of objects are more pronounced.
The G15 XLT lenses have a similar properties as being the B15 XLT lenses, however they’re of greyish/greenish colour. The G15 lens will be the original aviator lens that this military requested Ray-Ban to produce. The task ended up being to design a lens that was “colour neutral”; to put it differently, a lens that filters light just like the human eye does. If you need a lens which offers rather less contrast between colours, then this G15 XLT lens is designed for you since it offers similar colour-sensitivity for the eye. Having a lower contrast lens, the visible difference in colour and brightness of objects will be dampened. This means that the colours the truth is with these lenses will probably be natural and soft in the eyes.
Both the B15 and G15 XLT lenses are made of impact resistant optical glass which is naturally scratch resistant. Quality and stability are remarkable and over time you will notice virtually no fading whatsoever inside the colour.
Polarized lenses essentially cut down the level of glare manufactured by reflective surfaces like water or some other semi-transparent objects, and even some metallic surfaces. Glare signifies the difficulty of seeing in bright light.
Sunlight, for instance, bounces off surfaces in every directions (i.e. vertically, horizontally or diagonally). For those who are active from the “horizontal plane”, it means that the bright sunlight bounced horizontally enters the attention inside a similar fashion. This leads to the pupils to constrict and significantly reduce contrast. That’s why drivers have difficulty seeing the street prior to them if they’re driving in very sunny conditions (when the sun is in front of them).
Polarized lenses have got a laminated surface with vertical stripes that create a filter, which effectively omits the horizontally-polarized light and allows only vertically-polarized light in. Put simply, in the event you be with a clear lake you may probably see under the surface or if you’re driving, now you can see ray1ban road ahead.
Some limitations to polarized lenses are that LCD displays can become distorted or maybe you may notice a “rainbow” effect in case your car’s windows are tinted.
All 3 lenses are very useful, specially the polarized ones, but expect to pay a premium in the sunglasses.
The lens base simply means the base curve or perhaps the front curve of the lens measured in “diopters”, which is a term that truly only matters to opticians. You’ll find that many ray ban sale have got a “Lens Base 6”, which basically means that they’re sufficiently curved and created to to function as sunglasses (i.e., they cover the eye area enough).
Lens size is measured in millimeters and refers back to the length (or width) of merely one lens. Bear that in your mind when you make an order. Many Ray-Ban models come in many different sizes of lens. Make sure you get the size that matches your skin or perhaps you may end up with a pair of aviator shades that don’t fit properly.