Ray-Ban uses four different kinds of lenses with regard to their sunglasses. The B15 XLT lens, the ray ban sale online, polarized lenses and normal lenses, which we won’t discuss here because there’s nothing special about them (they simply are available in different colours).
Ray-Ban B15 XLT lenses are brownish in colour, block 100% of Ultra violet rays and enable only 15% of your visible light to move through them (that’s an 85% reduction!). These brown lenses also offer much more contrast by reducing on the quantity of blue light, instead of a G15 lens (which is described over the following paragraph). Blue light is very easily captured from the eye and it has the result of softening other colours which are harsher to the vision. In other words, by reduction of the amount of blue light, the differences between colours and brightness of objects will be more pronounced.
The G15 XLT lenses have the identical properties because the B15 XLT lenses, however they’re of greyish/greenish colour. The G15 lens may be the original aviator lens the military requested Ray-Ban to develop. The problem ended up being to design a lens which had been “colour neutral”; in other words, 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 perfect for you because it offers similar colour-sensitivity on the human eye. Having a lower contrast lens, the real difference in colour and brightness of objects will be dampened. Because of this the colours you see with these lenses will probably be natural and soft in the eyes.
The B15 and G15 XLT lenses are constructed with impact resistant optical glass that may be naturally scratch resistant. Quality and stability are remarkable as well as over time you will notice virtually no fading whatsoever inside the colour.
Polarized lenses essentially trim down the quantity of glare created by reflective surfaces like water or other semi-transparent objects, and in many cases some metallic surfaces. Glare means the difficulty of seeing in bright light.
Sunlight, by way of example, bounces off surfaces in all directions (i.e. vertically, horizontally or diagonally). For people who are active within the “horizontal plane”, it indicates that this bright sunlight bounced horizontally enters the attention within a similar fashion. This leads to the pupils to constrict and significantly reduce contrast. That’s why drivers have difficulty seeing the path ahead of them if they’re driving in very sunny conditions (if the sun is ahead of them).
Polarized lenses use 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, if you be on the clear lake you are able to probably see underneath the surface or if you’re driving, anyone can see ray1ban road ahead.
Some limitations to polarized lenses are that LCD displays could become distorted or else you may notice a “rainbow” effect when your car’s windows are tinted.
All 3 lenses are really useful, specially the polarized ones, but expect to pay limited around the sunglasses.
The lens base simply signifies the base curve or maybe the front curve from the lens measured in “diopters”, which is actually a term that truly only matters to opticians. You’ll find that many ray ban sale possess a “Lens Base 6”, which basically signifies that they’re sufficiently curved and created to to work as sunglasses (i.e., they cover your eyes enough).
Lens dimensions are measured in millimeters and means the length (or width) of one lens. Bear that under consideration when making an investment. Many Ray-Ban models come in a number of different sizes of lens. Make sure you obtain the size which fits the face or maybe you may end up with a pair of aviator shades that don’t fit properly.