Ray-Ban uses four different 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 may 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 the visible light to successfully pass through them (that’s an 85% reduction!). These brown lenses offer a little bit more contrast by cutting down on the quantity of blue light, as opposed to a G15 lens (which can be described in the next paragraph). Blue light is very easily captured through the eye and has the outcome of softening other colours that are harsher to our vision. To put it differently, by reducing the volume of blue light, the differences between colours and brightness of objects tend to be more pronounced.
The G15 XLT lenses have similar properties because the B15 XLT lenses, however they’re of greyish/greenish colour. The G15 lens is definitely the original aviator lens the military requested Ray-Ban to produce. The challenge was to design a lens that was “colour neutral”; in other words, a lens that filters light just like the human eye does. If you need a lens which offers a little less contrast between colours, then the G15 XLT lens is for you since it offers similar colour-sensitivity for the human eye. By using a lower contrast lens, the real difference in colour and brightness of objects will be dampened. Because of this the colours you can see through these lenses will likely be natural and soft about the eyes.
The two B15 and G15 XLT lenses are created from impact resistant optical glass that is certainly naturally scratch resistant. Quality and stability are remarkable and over time you will see virtually no fading whatsoever inside the colour.
Polarized lenses essentially trim down the level of glare made by reflective surfaces like water or any other semi-transparent objects, and even some metallic surfaces. Glare refers back to the difficulty of seeing in bright light.
Sunlight, by way of example, bounces off surfaces in every directions (i.e. vertically, horizontally or diagonally). For those who are active within the “horizontal plane”, it implies that this bright sunlight bounced horizontally enters the eye in a similar fashion. This leads to the pupils to constrict and significantly reduce contrast. That’s why drivers have difficulty seeing the highway ahead of them if they’re driving in very sunny conditions (if the sun is prior to them).
Polarized lenses use a laminated surface with vertical stripes that produce a filter, which effectively omits the horizontally-polarized light and allows only vertically-polarized light in. In other words, in the event you be with a clear lake it is possible to probably see beneath the surface or if you’re driving, you can now see ray1ban road ahead.
Some limitations to polarized lenses are that LCD displays can get distorted or else you may notice a “rainbow” effect if your car’s windows are tinted.
All 3 lenses are incredibly useful, in particular the polarized ones, but count on paying limited on the sunglasses.
The lens base simply means the base curve or the front curve from the lens measured in “diopters”, that is a term that really only matters to opticians. You’ll find that many ray ban sale online have a “Lens Base 6”, which basically means that they’re sufficiently curved and made to to operate as sunglasses (i.e., they cover the eyes enough).
Lens dimensions are measured in millimeters and refers back to the length (or width) of merely one lens. Bear that under consideration when you make an investment. Many Ray-Ban models are available in several different sizes of lens. Make certain you get the size that fits your facial skin or you may get a pair of aviator shades that don’t fit properly.