Ray-Ban makes use of 4 different types of lenses for his or her sunglasses. The B15 XLT lens, the G15 XLT lens, polarized lenses and regular lenses, which we won't focus on here because you can find nothing at all special about them (they just occur in numerous colours).
B15 XLT Lens
Ray-Ban B15 XLT lenses are brownish in colour, block a hundred% of all UV rays and permit only 15% in the obvious light-weight to pass through them (which is an 85% reduction!). These brown lenses also give you a bit extra contrast by cutting down on the quantity of blue mild, rather than a G15 lens (which can be explained in the next paragraph). Blue gentle is very quickly captured by the attention and has the influence of softening other colors which might be harsher to our eyesight. Quite simply, by decreasing the quantity of blue gentle, the variations amongst colors and brightness of objects are more pronounced.
G15 XLT Lens
The G15 XLT lenses hold the very same Homes because the B15 XLT lenses, even so they're of greyish/greenish colour. The G15 lens is the initial aviator lens the army asked for Ray-Ban to create. The problem was to design and style a lens that was "colour neutral"; in other words, a lens that filters mild such as human eye does. In order for you a lens that offers a little less contrast involving colors, then the G15 XLT lens is for yourself as it provides identical colour-sensitivity to your human eye. By using a decrease contrast lens, the main difference in colour and brightness of objects is going to be dampened. Which means the colours you see via these lenses will likely be all-natural and delicate on the eyes.
Equally the B15 and G15 XLT lenses are created of effect resistant optical glass that is of course scratch resistant. Top quality and steadiness are exceptional and over time you may notice nearly no fading by any means within the colour.
Polarized Lens
Polarized lenses basically Slice down the level of glare produced by reflective surfaces like water or other semi-transparent objects, and perhaps some metallic surfaces. Glare refers to the difficulty of seeing in vibrant light.
Sunlight, by way of example, bounces off surfaces in all Instructions (i.e. vertically, horizontally or diagonally). For people who are Energetic while in the "horizontal aircraft", it signifies that the brilliant daylight bounced horizontally enters the attention in a similar fashion. This triggers the pupils to constrict and appreciably lower contrast. This is why motorists have difficulty seeing the highway forward of them should they're driving in quite sunny grey lenses circumstances (When the Solar is ahead of them).
Polarized lenses Have got a laminated surface area with vertical stripes that develop a filter, which correctly cuts out the horizontally-polarized mild and will allow only vertically-polarized mild in. To paraphrase, if you come about to be on a clear lake you are able to in all probability see under the surface area or should you be driving, Now you can begin to see the highway in advance.
Some limitations to polarized lenses are that Liquid crystal display shows might develop into distorted or you might observe a "rainbow" influence if your automobile's windows are tinted.
All 3 lenses are quite valuable, significantly the polarized types, but assume to pay a top quality within the sunglasses.
Lens Foundation
The lens foundation just refers to the foundation curve or even the entrance curve with the lens measured in "diopters", that is a term that basically only matters to opticians. You will discover that lots of Ray-Ban aviators Possess a "Lens Foundation six", which mainly suggests that they're sufficiently curved and designed to to function as sun shades (i.e., they cover the eyes plenty of).
Lens Dimension
Lens dimension is calculated in millimeters and refers back to the duration (or width) of one lens. Bear that in mind when building a buy. Quite a few Ray-Ban designs can be found in quite a few distinct measurements of lens. Make sure you get the scale that matches your facial area or you could end up getting a pair of aviator shades that don't suit adequately.
Some Ray-Ban sun shades have lens measurements which have been selected as more compact, compact, etcetera. This is certainly frequent for designs that don't resemble standard Eyeglasses with two lenses. These sunglasses Have a very "uni-lens" design, wherever the lenses are connected seamlessly in the bridge. This is why, standard sizing is not applicable. These shades are to get a superior trend glance.