Optical Lens Having a Filtering Interferential Coating and a Multilayer System for Improving Abrasion-Resistance

An optical lens comprising:

• a substrate having a front main face and a rear main face, at least one main face of which being successively coated with:
• (A) a first high refractive index sheet having a refractive index higher than 1.55, which does not comprise any Ta2O5 layer;
• (B) a second low refractive index sheet having a refractive index of 1.55 or less in direct contact with the former sheet;
• (C) a third high refractive index sheet having a refractive index higher than 1.55 in direct contact with the former sheet;
• a monolayer sub-layer having a thickness higher than or equal to 100 nm in direct contact with the former sheet (C);
• a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less;
• and
• at least one main face of the substrate is coated with a filtering interferential coating that selectively reflects visible light in a range of wavelengths, and the reflection spectrum of said filtering interferential coating has a reflection peak centered at a wavelength chosen within said range of wavelengths that exhibits a full width at half maximum lower than 150 nm;
• or
• at least one main face of the substrate is coated with a filtering interferential coating that selectively transmits visible light in a range of wavelengths, and the transmission spectrum of said filtering interferential coating has a transmission peak centered at a wavelength chosen within said range of wavelengths that exhibits a full width at half maximum lower than 150 nm.