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News » Thin lenses index 1.6: the latest generation of lenses almost invisible

Thin lenses index 1.6: the latest generation of lenses almost invisible

Thin lenses index 1.6 are a real leadership in optics.
Made of different materials - glass, plastic, polycarbonate - the lenses, in general, are the fundamental optical elements that allow to concentrate or to diverge the light rays obtaining images of objects.
This suggests, then, what is fundamental to us all.
The glasses are a corrective tool necessities and choice of lens definitely is the fundamental commitment that the doctor and the optician must take with the utmost professionalism.
But, they are both accessories, as such, are called to follow the trend and fashion of the moment. And \'This is the right compromise that led to the proposal on the thin lens market index 1.6.

thin lenses index = 1.6 glasses more appreciated day
While excel glasses with showy and colorful super frames, the other day in the glasses, without frame are always appreciated. In this second case, the decisive factor that is taken into account, also under the aesthetic appearance, is represented by the same lens and, mainly, by its thickness.
Here\'s where to draw their reason for being thin 1.6 index lenses.
In fact, while nell\'occhiale with showy and "full-bodied" frame the edge of the lens is masked, this does not take place in that in the day, the beauty here is determined in terms of aesthetics precisely by the thickness of the lens: the thinner is the lens the more popular is the glasses per day.

As the material in the thin lenses index is decisive 1.6
As mentioned, the lenses can be glass (manufactured silicon-based) or organic (shatterproof lenses constructed of carbon-based). The glass is less used nowadays, especially in thin lens index 1.6 as it is heavier and can break easily.
The shatterproof lenses, however, does not break easily.
What, however, about the thickness of the lens? What is the refractive index from which it depends precisely?
When light passes through a medium, which is not the empty, it slows down.
This decrease in speed results in a change of direction, refraction, in fact.
In other conditions being equal, the refractive index depends on the density of the medium.
The greater the refractive index will be thinner the lens.
The lenses in organic material have indices of refraction that varies from 1.5 to 1.7.
To determine the choice of the refractive index is the visual defect, the type of the frame and the same as the bearer requirements. In principle, the low-index lenses (1.5) tend to correct visual defects up to 3 diopters both negative and positive, the thin 1.6 index lenses are designed to corrections from 3 to 6 diopters, while higher indexes are provided to upper fixes to 6 diopters.
In addition to diopters, however, they must be taken into account other factors that go into determining the refractive index: occasional use / permanent, close / far.
The lenses with refractive index 1.6 polycarbonate offer excellent resistance to heat and impact. The polycarbonate, for its specific characteristics, is definitely the most suitable material for this kind of treatment, in particular for its high strength, which contributes to counter the possible damage to the glasses resulting from bumps and drops.


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