Ray-Ban makes use of four differing kinds of lenses for their sunglasses. The B15 XLT lens, the G15 XLT lens, polarized lenses and normal lenses, which we cannot focus on listed here because you will find nothing at all Particular about them (They simply arrive in numerous colors).
B15 XLT Lens
Ray-Ban B15 XLT lenses are brownish in colour, block one hundred% of all UV rays and allow only fifteen% on the noticeable mild to go through them (that is an 85% reduction!). These brown lenses also give a little bit more distinction by cutting down on the amount of blue light-weight, in contrast to a G15 lens (and that is described in another paragraph). Blue light-weight is very quickly captured by the eye and has the outcome of softening other colours which can be harsher to our eyesight. Put simply, by lessening the amount of blue mild, the dissimilarities amongst colors and brightness of objects tend to be more pronounced.
G15 XLT Lens
The G15 XLT lenses have the same properties as the B15 XLT lenses, nonetheless they're of greyish/greenish colour. The G15 lens is the first aviator lens which the navy requested Ray-Ban to build. The challenge was to design a lens which was "colour neutral"; Basically, a lens that filters gentle such as the human eye does. If you'd like a lens that offers rather less contrast between colors, then the G15 XLT lens is to suit your needs since it offers identical colour-sensitivity on the human eye. Using a lower distinction lens, the real difference in colour and brightness of objects will likely be dampened. This means that the colors the thing is by way of these lenses will probably be purely natural and delicate on the eyes.
Equally the B15 and G15 XLT lenses are created of affect resistant optical glass that is of course scratch resistant. Top quality and steadiness are outstanding and eventually you are going to see nearly no fading by any means within the colour.
Polarized Lens
Polarized lenses in essence Slash down the amount of glare produced by reflective surfaces like drinking water or other semi-clear objects, and even some metallic surfaces. Glare refers to The problem of observing in dazzling light.
Sunlight, as an example, bounces off surfaces in all Instructions (i.e. vertically, horizontally or diagonally). For people who find themselves Lively during the "horizontal plane", it means that the bright sunlight bounced horizontally enters the attention in an identical trend. This will cause the pupils to constrict and significantly decrease contrast. That's why drivers have problems seeing the road ahead of these should they're driving in very sunny conditions (When the sun is in advance of these).
Polarized lenses Use a laminated floor with vertical stripes that develop a filter, which properly cuts out the horizontally-polarized mild and permits only vertically-polarized mild in. Put simply, in the event you occur to be on a transparent lake you may possibly see beneath the surface or when you brown lenses are driving, Now you can see the highway forward.
Some limitations to polarized lenses are that Liquid crystal display displays may perhaps grow to be distorted or you might notice a "rainbow" outcome if your automobile's windows are tinted.
All three lenses are certainly valuable, specially the polarized ones, but anticipate to pay for a quality about the sun shades.
Lens Base
The lens base simply just refers to the foundation curve or the front curve of the lens measured in "diopters", which happens to be a expression that really only matters to opticians. You will discover that lots of Ray-Ban aviators have a "Lens Base 6", which mainly implies that they are adequately curved and intended to to operate as sunglasses (i.e., they go over the eyes plenty of).
Lens Size
Lens size is calculated in millimeters and refers to the length (or width) of 1 lens. Bear that in your mind when producing a order. Several Ray-Ban products come in several different dimensions of lens. Make sure you get the dimensions that matches your facial area or you might end up having a pair of aviator shades that do not in shape effectively.
Some Ray-Ban sunglasses have lens dimensions that happen to be specified as extra compact, modest, etc. This is often widespread for designs that don't resemble traditional glasses with two lenses. These sun shades have a "uni-lens" style, wherever the lenses are connected seamlessly throughout the bridge. For this reason, standard sizing is not really applicable. These shades are for the high style glance.