Online guide for lenses and treatment used by giarre.com > Hi-Performance Trivex 1.53
Trivex is the material that has revolutionized the world of ophthalmic lenses. Trivex ® is an innovative material which is gifted with extraordinary features, such as superior optics and ultra light weight.These features, besides providing protection against UV rays, ensure greater safety. They also make Trivex ® an ideal choice for lens prescriptions with strength +4/-4, for lens wearers of every age (from children to adults with an active life) and even for rimless frames. Trivex ® is a unique material for lenses, which combines three extraordinary features: extreme lightness, superior optical quality (with an Abbe value: 45) and resistance. What's more, it is presently the material for ophthalmic lenses with the minor density on the market (1.11 g/cm). All this, associated with excellent optics, allows lenses wearers to enjoy extreme comfort, excellent solidity over time and impact resistance, besides extraordinary performances in case of arranging on rimless frames and perfect compatibility with superficial lens coatings, such as anti-scratch treatment and anti-reflection one.
The table below clearly illustrates how Trivex ® represents the best technical compromise to satisfy the current needs of many lenses wearers.
| CR39 | TRIVEX | Polycarbonate |
| Refrective Index | 1.498 | 1.523 | 1.586 |
| Abbe Index | 59 | 43 | 30 |
| Specific Weight | 1.32 | 1.11 | 1.22 |
| Impact Resistance | 8 | 62 | 62 |
| Chemical Resistance | Good | Good | Poor |
As the table clearly shows off, Trivex ® resistance is comparable to that of polycarbonate, and its specific weight is just 1.11 g/cm, which makes it the lightest material for ophthalmic use. It also shows a resistance to chemical materials( acetone, alcool, hair spary solvents, ecc.) comparable to that of CR39 and an Abbe value remarkably superior to polycarbonate.
|
Copyright © 2000-2010: giarre.com All rights reserved. - IT VatCode: 01641440514
|
