Ray-Ban takes advantage of four different types of lenses for their sunglasses. The B15 XLT lens, the G15 XLT lens, polarized lenses and usual lenses, which we can't go over here because there is certainly very little special about them (They only appear in numerous colours).

B15 XLT Lens

Ray-Ban B15 XLT lenses are brownish in colour, block 100% of all UV rays and allow only fifteen% of your visible light to pass through them (which is an 85% reduction!). These brown lenses also give you a bit extra distinction by reducing down on the quantity of blue mild, rather than a G15 lens (which is explained in another paragraph). Blue gentle is incredibly quickly captured by the eye and has the effect of softening other colors that happen to be harsher to our vision. To paraphrase, by reducing the level of blue mild, the distinctions among colors and brightness of objects are more pronounced.

G15 XLT Lens

The G15 XLT lenses possess the exact same Attributes as being the B15 XLT lenses, even so They are of greyish/greenish colour. The G15 lens is the original aviator lens the military requested Ray-Ban to acquire. The challenge was to layout a lens which was "colour neutral"; Quite simply, a lens that filters light-weight just like the human eye does. If you want a lens that provides a little less contrast among colours, then the G15 XLT lens is in your case mainly because it offers comparable colour-sensitivity for the human eye. That has a lower distinction lens, the primary difference in colour and brightness of objects will be dampened. Which means that the colors the thing is by means of these lenses will likely be organic and gentle around the eyes.

Both the B15 and G15 XLT lenses are made of influence resistant optical glass that is of course scratch resistant. Excellent and balance are remarkable and over time you might recognize virtually no fading by any means within the colour.

Polarized Lens

Polarized lenses fundamentally Reduce down the quantity of glare made by reflective surfaces like h2o or other semi-clear objects, and also some metallic surfaces. Glare refers to The problem of observing in bright light.

Sunlight, by way of example, bounces off surfaces in all Instructions (i.e. vertically, horizontally or diagonally). For people who find themselves Energetic within the "horizontal airplane", it implies that the brilliant sunlight bounced horizontally enters the attention in the same fashion. This results in the pupils to constrict and appreciably minimize distinction. That is why motorists have difficulty observing the highway ahead of them whenever they're driving in extremely sunny disorders (In the event the Solar grey lenses is in advance of them).

Polarized lenses Use a laminated surface with vertical stripes that produce a filter, which proficiently cuts out the horizontally-polarized light-weight and enables only vertically-polarized gentle in. To paraphrase, if you occur for being on a clear lake it is possible to in all probability see beneath the surface or when you are driving, you can now see the road ahead.

Some restrictions to polarized lenses are that Liquid crystal display displays may perhaps develop into distorted or it's possible you'll notice a "rainbow" effect if your car's Home windows are tinted.

All 3 lenses are quite practical, specifically the polarized ones, but count on to pay a premium over the sun shades.

Lens Foundation

The lens base simply refers back to the foundation curve or the front curve on the lens calculated in "diopters", which happens to be a expression that actually only matters to opticians. You will find that lots of Ray-Ban aviators Possess a "Lens Foundation six", which mainly suggests that they're sufficiently curved and meant to to function as sun shades (i.e., they address the eyes plenty of).

Lens Sizing

Lens measurement is calculated in millimeters and refers to the size (or width) of 1 lens. Bear that in your mind when creating a invest in. Many Ray-Ban types are available numerous unique dimensions of lens. Make sure you get the scale that matches your deal with or you might end up having a pair of aviator shades that don't fit correctly.

Some Ray-Ban sunglasses have lens sizes which are designated as further smaller, tiny, etc. This is often prevalent for versions that don't resemble standard Eyeglasses with two lenses. These sunglasses Have a very "uni-lens" design, the place the lenses are related seamlessly through the bridge. For that reason, traditional sizing is just not relevant. These shades are to get a substantial manner appear.