Ray-Ban uses four different types of lenses for his or her 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 simply are available in different colours).
Ray-Ban B15 XLT lenses are brownish in colour, block 100% of all Ultra violet rays and permit only 15% from the visible light to pass through them (that’s an 85% reduction!). These brown lenses also provide much more contrast by cutting down on the level of blue light, as opposed to a G15 lens (which is described in the following paragraph). Blue light is extremely easily captured through the eye and possesses the outcome of softening other colours that are harsher to our own vision. Quite simply, by reduction of the volume of blue light, the differences between colours and brightness of objects are definitely more pronounced.
The G15 XLT lenses have the same properties since the B15 XLT lenses, however they’re of greyish/greenish colour. The G15 lens is definitely the original aviator lens that the military requested Ray-Ban to produce. The process was to design a lens that had been “colour neutral”; in other words, a lens that filters light like the eye does. If you need a lens which offers rather less contrast between colours, then the G15 XLT lens is made for you because it offers similar colour-sensitivity on the eye. With a lower contrast lens, the visible difference in colour and brightness of objects is going to be dampened. Consequently the colours the truth is through these lenses will probably be natural and soft around the eyes.
Both B15 and G15 XLT lenses are constructed with impact resistant optical glass that may be naturally scratch resistant. Quality and stability are remarkable and also over time you will see hardly any fading whatsoever within the colour.
Polarized lenses essentially cut down the amount of glare produced by reflective surfaces like water or other semi-transparent objects, and even some metallic surfaces. Glare refers to the difficulty of seeing in bright light.
Sunlight, for instance, bounces off surfaces in most directions (i.e. vertically, horizontally or diagonally). For folks who are active in the “horizontal plane”, it indicates that the bright sunlight bounced horizontally enters the attention within a similar fashion. This will cause the pupils to constrict and significantly reduce contrast. That’s why drivers have difficulty seeing the highway before them if they’re driving in very sunny conditions (in case the sun is prior to them).
Polarized lenses use 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, in the event you be on a clear lake you are able to probably see within the surface or if you’re driving, now you can see ray1ban road ahead.
Some limitations to polarized lenses are that LCD displays may become distorted or perhaps you may notice a “rainbow” effect in case your car’s windows are tinted.
All 3 lenses are extremely useful, in particular the polarized ones, but anticipate paying reduced in the sunglasses.
The lens base simply refers to the base curve or even the front curve from the lens measured in “diopters”, which is a term that basically only matters to opticians. You’ll realize that many ray ban sale 90 off have got a “Lens Base 6”, which basically signifies that they’re sufficiently curved and made to to work as sunglasses (i.e., they cover the eyes enough).
Lens size is measured in millimeters and means the length (or width) of just one lens. Bear that under consideration when making an order. Many Ray-Ban models can be found in many different sizes of lens. Make certain you obtain the size that matches your face or else you may get a kind of aviator shades that don’t fit properly.