Prescription safety spectacles Finishes Tint Tinted lenses provide effective protection against glare in areas with high light intensity (for example, sunlight) Constant tinting • available in brown and grey • tinting levels: 15%, 25%, 65%, 75% Variable tinting – Variomatic™ • lenses tint automatically depending on the UV radiation and temperature • tinting of between approx. 8% and 80%, in brown • available as prescription safety spectacles in polycarbonate and Trivex™ Scratch-resistant coating To guarantee an ideal surface hardness, all our plastic lenses are given a hard coating (optional for CR 39). Anti-reflective coating Anti-reflective coating is applied to the inside and outside of lenses by means of vapour deposition. It significantly reduces reflections on the surfaces. It offers a cosmetic advantage and increases light transmission. Two qualities are available: • normal anti-reflective coating • super anti-reflective coating Normal anti-reflective coating Super anti-reflective coating Good reflection reduction Maximum reflection reduction Metal oxide is applied once to each surface Metal oxide is applied several times to each surface Residual reflection ≈ 4% Residual reflection < 2% 407
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