Ray-Ban uses four various 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 can be found in different colours).
Ray-Ban B15 XLT lenses are brownish in colour, block 100% of most UV rays and permit only 15% in the visible light to pass through through them (that’s an 85% reduction!). These brown lenses also provide a little bit more contrast by lowering on the level of blue light, rather than a G15 lens (which can be described in the following paragraph). Blue light is incredibly easily captured with the eye and possesses the effect of softening other colours which can be harsher to our own vision. To put it differently, by reduction of the level of blue light, the differences between colours and brightness of objects are definitely more pronounced.
The G15 XLT lenses have the same properties as the B15 XLT lenses, however they’re of greyish/greenish colour. The G15 lens is the original aviator lens how the military requested Ray-Ban to produce. The task ended up being to design a lens which had been “colour neutral”; to put it differently, a lens that filters light like the human eye does. If you need a lens that gives rather less contrast between colours, then the G15 XLT lens is perfect for you since it offers similar colour-sensitivity on the human eye. By using a lower contrast lens, the visible difference in colour and brightness of objects will be dampened. Consequently the colours the truth is through these lenses will likely be natural and soft on the eyes.
The two B15 and G15 XLT lenses are made of impact resistant optical glass that is naturally scratch resistant. Quality and stability are remarkable as well as over time you will notice virtually no fading whatsoever within the colour.
Polarized lenses essentially cut down the level of glare manufactured by reflective surfaces like water or some other semi-transparent objects, as well as some metallic surfaces. Glare signifies the difficulty of seeing in bright light.
Sunlight, by way of example, bounces off surfaces in most directions (i.e. vertically, horizontally or diagonally). For those who are active inside the “horizontal plane”, it means that this bright sunlight bounced horizontally enters the eye within a similar fashion. This leads to the pupils to constrict and significantly reduce contrast. That’s why drivers have difficulty seeing the street in front of them if they’re driving in very sunny conditions (when the sun is in front of them).
Polarized lenses possess a laminated surface with vertical stripes that produce a filter, which effectively reduces the horizontally-polarized light and allows only vertically-polarized light in. To put it differently, if you happen to be on the clear lake you can probably see under the surface or maybe if you’re driving, now you can see ray1ban road ahead.
Some limitations to polarized lenses are that LCD displays can become distorted or perhaps you may notice a “rainbow” effect should your car’s windows are tinted.
All 3 lenses are very useful, particularly the polarized ones, but expect to pay reduced on the sunglasses.
The lens base simply signifies the base curve or even the front curve in the lens measured in “diopters”, that is a term that actually only matters to opticians. You’ll find that many cheap ray ban sale have got a “Lens Base 6”, which basically ensures that they’re sufficiently curved and made to to function as sunglasses (i.e., they cover your eyes enough).
Lens dimension is measured in millimeters and means the length (or width) of merely one lens. Bear that under consideration when coming up with an order. Many Ray-Ban models can be found in many different sizes of lens. Make certain you receive the size that fits your facial skin or perhaps you may end up with a set of aviator shades that don’t fit properly.