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1. (WO2018033687) OPHTHALMIC LENS COMPRISING A REFLECTIVE ANTI-ABRASION MULTILAYER COATING AND PROCESS FOR MANUFACTURING SAID LENS

Pub. No.:    WO/2018/033687    International Application No.:    PCT/FR2017/052244
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Sat Aug 19 01:59:59 CEST 2017
IPC: G02B 1/10
G02B 5/26
G02B 5/28
G02C 7/10
Applicants: ESSILOR INTERNATIONAL
Inventors: HENKY, Francis
FRABOULET, Maud
Title: OPHTHALMIC LENS COMPRISING A REFLECTIVE ANTI-ABRASION MULTILAYER COATING AND PROCESS FOR MANUFACTURING SAID LENS
Abstract:
The present invention relates to an ophthalmic lens (L6) comprising a substrate (1) having a front main face and a back main face, the front main face being covered with a multilayer inorganic coating (2) that has an average light reflectance Rv in the visible spectrum equal to or higher than 4% and that consists of a stack comprising: at least two low-refractive-index layers that are each made of a first material of refractive index lower than 1.55; and at least one high-refractive-index layer that is made of a second material of refractive index higher than 1.55 and that is located between two said low-index layers that are adjacent in said stack, characterized in that said coating (2) has a thickness smaller than or equal to 600 nm and a Bayer ISTM abrasion-resistance value higher than 10.