The available coating materials are as follows:
High refractive products (1.9 – 2.4)
Hafnium oxide , cerium oxide, zirconium oxide, tantalum oxide, niobium oxide, zinc oxide, chrome oxide and titanium oxide.
Medium refractive products (1.6 – 1.8)
Aluminum oxide, magnesium oxide, yttrium oxide, tantalum oxide, niobium oxide, neodymium fluoride, chrome oxide and titanium oxide.
Low refractive products (1.3 – 1.58)
Yttrium fluoride, aluminum fluoride, magnesium fluoride, lanthanum fluoride, lithium fluoride, silicon dioxide, calcium fluoride and ytterbium fluoride.