Online guide for lenses and treatment used by giarre.com > Hi-P. Policarbonate SP1.59
Hi-Performance Policarbonate 1.59 Full Top is an organic thermoplastic resin, which identifies many qualities of other materials:- High visual quality: clear and comfortable images;
- Crush resistant: safer lenses;
- Refraction index: 1.591 (High index: thinner lenses);
- Low specific weight 1,20 gr./cm.3: lighter lenses
- Harmless phisiologically
- Perfect resistance to the atmospheric agents and water;
- Abbe number: 32
- Cleaning of the surfaces: alcohol
- UV protection: 400 nm
Protection from UV and 'blu' rays, in order to eliminate the pathological effects dued to these rays
The resistance to crushes, that is to the sudden and unexpected impact, means that you can also mistreat your glasses, which can also full down or taken a blow, without the lenses been damaged, resulting therefore safer and protecting our eyes for longer period of time. The resistance to crush of this type of lenses is 30 times more than a normal lense of CR39 and more than 60 times in comparison with a lense of mineral glass. The policarbonate overcomes each resistant test to impact, in order to be classified secured material: The impact of a accidental damage, the car crash, the opening of Airbag, trauma dued to the impacts during sports activities, are some situations, with whom the glasses have to be prepared to life.
The lightness of Policarbonate:
The weight of a lense depends from its total volume and its specific weight of materials. The specific weight of policarbonate of 1,20 gr./cm3 is one of the lower specific weights of all unbreakable materials present in the market today.
Advantage of thin lenses:
The high refraction index of the policarbonate enables to build flatter surfaces and with longer band radius, with 20%, in comparison with the lenses of the same power, such as the CR39. The negative lenses can reach the thickness at the centre of only 1 mm. The positive lenses mantain unchanged their resistance and their handiness.
The visual quality:
The transparency of the material is higher than 90%, similar to the one of each material for opthalmic use; the Full Top treatment, anti-reflection and anti-scratch, let increase the transmission of the light up to 98%. The particular working at high technology guarantees shiny lenses and with exceptional finishing of the surface.
The esthetic of the lenses in policarbonate:
The most pleasant bending of the surfaces of the lense permitt the forming of the lenses with a better esthetic, because they are less bend in the first surface, which is projecting from the glasses.
Total U.V protection:
The policarbonate is able to block all the radiations with wave lenght under 400 nm. So there is a complete protection to the effects , dued to the transmission of the U.V. rays and from the "blu" part of the visible light, therefore prevent the damaged effect dued to the accumulation, in particular at a crystalline level, of the U.V. rays of B type ( the ones between a wave length from 315 up to 380 nm.).
The cleaning of policarbonated lenses:
In order to clean the surface of your policarbonated lenses, is suggested the use of alcohol with normal cleaning clothes, like handkerchief or antistatic clothes in the market. You must not use strong solvent, such as petrol, acetone, tricloroethylene, etc. which can eliminate the shining and transparency coating of the surface of the lense.
Suggestions to use these lenses.
- High prescriptions
The binomial between high refraction index and low specific weight make the lense thin, with a pleasant aspect. - When you want to be 100% secure:
Glasses for children, sport, for particular working conditions, dynamic people and for people who don't want to have problems with the using of the eyewear. - Rimless glasses such as 'Glasant' type:
The thickness combined with the strenght of the lense is an important feature, which gives elegance to the glasses.
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