Ray-Ban uses four different kinds of lenses for his or her sunglasses. The B15 XLT lens, the cheap ray ban sale, polarized lenses and normal lenses, which we won’t discuss here because there’s nothing special on them (they just are available in different colours).
Ray-Ban B15 XLT lenses are brownish in colour, block 100% of UV rays and permit only 15% in the visible light to move through them (that’s an 85% reduction!). These brown lenses provide much more contrast by reducing on the amount of blue light, as opposed to a G15 lens (which is described over the following paragraph). Blue light is very easily captured with the eye and has the result of softening other colours which can be harsher to our vision. In other words, by reduction of the volume of blue light, the differences between colours and brightness of objects tend to be more pronounced.
The G15 XLT lenses have a similar properties because the B15 XLT lenses, however they’re of greyish/greenish colour. The G15 lens will be the original aviator lens how the military requested Ray-Ban to build up. The challenge ended up being to design a lens which was “colour neutral”; quite simply, a lens that filters light much like the eye does. If you want a lens which offers a little less contrast between colours, then a G15 XLT lens is made for you mainly because it offers similar colour-sensitivity to the eye. By using a lower contrast lens, the visible difference in colour and brightness of objects will likely be dampened. Because of this the colours you see with these lenses is going to be natural and soft on the eyes.
Both the B15 and G15 XLT lenses are constructed with impact resistant optical glass that may be naturally scratch resistant. Quality and stability are remarkable and over time you will notice virtually no fading whatsoever from the colour.
Polarized lenses essentially cut down the quantity of glare manufactured by reflective surfaces like water or some other semi-transparent objects, and also some metallic surfaces. Glare refers to the difficulty of seeing in bright light.
Sunlight, as an example, bounces off surfaces in every directions (i.e. vertically, horizontally or diagonally). For people who are active in the “horizontal plane”, it implies that the 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 street before them if they’re driving in very sunny conditions (when the sun is prior to them).
Polarized lenses have 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 with a clear lake it is possible 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 can become distorted or you may notice a “rainbow” effect if your car’s windows are tinted.
All 3 lenses are really useful, specially the polarized ones, but anticipate to pay reduced 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 basically only matters to opticians. You’ll discover that many ray ban sale online possess a “Lens Base 6”, which basically implies that they’re sufficiently curved and built to to operate as sunglasses (i.e., they cover the eyes enough).
Lens size is measured in millimeters and refers back to the length (or width) of a single lens. Bear that under consideration when creating an investment. Many Ray-Ban models come in many different sizes of lens. Make sure you obtain the size that suits the face or maybe you may get a kind of aviator shades that don’t fit properly.