Online guide for lenses and treatment used by giarre.com > Orma 1.5
Orma 1.5 The organic lense which combines quality and price. Orma is a lightweight, tough plastic lens that is much safer than glass. It weighs far less than the equivalent glass lens and it very easy to tint. Hard coatings are recommended to increase scratch resistance and anti-reflection coatings can be applied.
- Refractive index of 1.5 (close to that of standard glass)
- Density of 1.32 (almost half that of glass)
- Constringence of 58-59 (thus a very low chromatism)
- UV Protection: 355
- Selectivity: 93% UVA - 100% UVB
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