Abstract: A method for optimising a progressive ophthalmic lens and to a method for producing same. Further disclosed it a method for optimising a progressive ophthalmic lens the distribution of power and undesired astigmatism along an optical surface is optimised by minimising the function: F ? ? ·=· ? ? ? i = 1 n ? ? w ? ? 1 i ? ( Ast i ) 2 + w ? ? 2 i ? ( Pow i - TargetPow ) 2 wherein w1i and w2i are 0 or positive, and wherein the subscript i indicates the different points of the optical surface.

Abstract: A method for optimising a progressive ophthalmic lens and to a method for producing same. Further disclosed it a method for optimising a progressive ophthalmic lens the distribution of power and undesired astigmatism along an optical surface is optimised by minimising the function: F ? ? ·=· ? ? ? i = 1 n ? ? w ? ? 1 i ? ( Ast i ) 2 + w ? ? 2 i ? ( Pow i - TargetPow ) 2 wherein w1i and w2i are 0 or positive, and wherein the subscript i indicates the different points of the optical surface.

Abstract: A method for manufacturing an ophthalmic lens including selecting a base of polymeric material and applying a multiple layer structure coating. The coating is selected by designating an interphase, a first layer (of 91-169 nm) with a refraction index higher than 1.8, a second layer (of 128-248 nm) with a refraction index lower than 1.65, a third layer (of 73-159 nm) with a refraction index higher than 1.8 and a fourth layer (of 40-138 nm) with a refraction index lower than 1.8. A total thickness of the multiple layer structure is less than 600 nm. The structure has intermediate layer(s) with intermediate refraction indices, wherein a doublet of two adjacent layers that fulfil the thicknesses above is replaced by a triplet so that the thickness and an optical thickness of the triplet differ from those of the doublet by less than 5%, respectively.

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

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

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

Abstract: Lens comprising a polymeric substrate, a hardening layer and a metallic layer. Lens comprising a substrate of polymeric material (P), and which is coated with a hardening layer (E) and a metallic layer (M) that is between 1 and 20 nm thick. The coating also has an anti-humidity layer (AH) made of a material from the group made up of ZrO2, Nb2O3, Ta2O5, CeO2, HfO2, La2O3, TiO2, Pr2O3, Sc2O3, WO3, Y2O3, ZnS and the combinations thereof, that is between 35 nm and 55 nm thick, where between the anti-humidity layer (AH) and the hardening layer (E) there is no other sandwiched layer that is thicker than or equivalent to the anti-humidity layer (AH). Over the metallic layer (M) there is a first high refraction index layer (A1), and a first low refraction index layer (B1).

Abstract: Polymer based lens including a hardening layer, an interferential multi-layer and an absorbent layer therebetween. The absorbent layer is made from a metal, metal oxide or metal nitride, suitable for producing a transparent layer via deposition by sputtering, and includes cations of a coloring metal from the group made up of transition elements which, in oxided form, have a cation that absorbs electromagnetic radiation in the visible spectrum. The cations of the coloring metal are in a proportion between 10% and 70% atomic percentage of the cations with respect to the cation of the predominant metal in said absorbent layer.