OPHTHALMIC LENS COMPRISING A BASE OF POLYMERIC MATERIAL WITH A COATING HAVING AN INTERFERENTIAL, ANTI-REFLECTIVE, ANTI-IRIDESCENT AND IR FILTER MULTIPLE LAYER STRUCTURE.

摘要

Ophthalmic lens comprising a base of polymeric material with a coating having an interferential, anti-reflective, anti-iridescent and IR filter multiple layer structure. Ophthalmic lens with a multiple layer structure comprising an interphase, a first layer (of 91-169nm) with a refraction index higher than 1.8, a second layer (of 128-248nm) with a refraction index lower than 1.65, a third layer (of 73-159nm) with a refraction index higher than 1.8 and a fourth layer (of 40-138nm) with a refraction index lower than 1.8. The total thickness of the multiple layer structure is less than 600nm. The structure can have intermediate layers with intermediate refraction indices, in which case the doublet made up of two adjacent layers that fulfil the thicknesses above is replaced by a triplet so that the thickness and the optical thickness of the triplet differ from those of the doublet by less than 5%, respectively.