Ray-Ban uses four different kinds of lenses for their sunglasses. The B15 XLT lens, the ray ban sale online, polarized lenses and normal lenses, which we won’t discuss here because there’s nothing special about the subject (they just come in different colours).
Ray-Ban B15 XLT lenses are brownish in colour, block 100% of most Ultra violet rays and permit only 15% of your visible light to successfully pass through them (that’s an 85% reduction!). These brown lenses also offer a bit more contrast by reducing on the amount of blue light, instead of a G15 lens (which happens to be described in the following paragraph). Blue light is incredibly easily captured with the eye and possesses the result of softening other colours that are harsher to our own vision. Put simply, by reduction of the volume of blue light, the differences between colours and brightness of objects will be more pronounced.
The G15 XLT lenses have the identical properties because the B15 XLT lenses, however they’re of greyish/greenish colour. The G15 lens will be the original aviator lens that the military requested Ray-Ban to build up. The problem would be to design a lens which had been “colour neutral”; to put it differently, a lens that filters light just like the human eye does. If you prefer a lens that provides a little less contrast between colours, then this G15 XLT lens is made for you as it offers similar colour-sensitivity for the human eye. Having a lower contrast lens, the real difference in colour and brightness of objects will be dampened. Which means that the colours the thing is through these lenses will likely be natural and soft on the eyes.
Both the B15 and G15 XLT lenses are made of 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 quantity of glare created by reflective surfaces like water or another semi-transparent objects, and in many cases some metallic surfaces. Glare means the difficulty of seeing in bright light.
Sunlight, as an example, bounces off surfaces in all of the directions (i.e. vertically, horizontally or diagonally). For individuals that are active in the “horizontal plane”, it implies the bright sunlight bounced horizontally enters the attention inside a similar fashion. This causes the pupils to constrict and significantly reduce contrast. That’s why drivers have difficulty seeing the road prior to them if they’re driving in very sunny conditions (in the event the sun is ahead 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 over a clear lake you may probably see beneath the surface or maybe you’re driving, you may now see ray1ban road ahead.
Some limitations to polarized lenses are that LCD displays could become distorted or perhaps you may notice a “rainbow” effect should your car’s windows are tinted.
All 3 lenses are really useful, specially the polarized ones, but count on paying limited on the sunglasses.
The lens base simply signifies the base curve or perhaps the front curve in the lens measured in “diopters”, and that is a term that truly only matters to opticians. You’ll learn that many ray ban usa use a “Lens Base 6”, which basically means that they’re sufficiently curved and built to to operate as sunglasses (i.e., they cover the eyes enough).
Lens dimensions are measured in millimeters and signifies the length (or width) of a single lens. Bear that in your mind when you make a purchase. Many Ray-Ban models are available in a number of sizes of lens. Ensure you get the size that matches your facial skin or maybe you may get a set of aviator shades that don’t fit properly.