Patent ID: 9658467
Date: 2017-05-23
CPC Classifications: G02B,G02C,Y10T

Claim:
1. An ophthalmic lens fit for edging, comprising a front main face and a back main face, wherein it is obtained by depositing in succession in this order on at least one of the main faces of the lens and preferably the front main face: at least one first hydrophobic layer, of a physical thickness of 6 to 16 nm, obtained by depositing a composition comprising a constituent A chosen from fluorinated compounds and preferably perfluorinated compounds containing at least one silanol group or a silanol-group precursor, and the number average molar mass of which is higher than or equal to 2000 g/mol and preferably 2000 to 10000 g/mol; at least one second hydrophobic layer, of a physical thickness ranging from 3 to 20 nm, obtained by depositing a composition comprising a constituent B chosen from fluorinated compounds and preferably perfluorinated compounds containing at least one silanol group or a precursor thereof and the number average molar mass of which is lower than or equal to 900 g/mol; at least one temporary layer comprising a metal fluoride, preferably magnesium fluoride, of a physical thickness of 22 to 50 nm; and optionally a temporary layer comprising a metalloid or metal hydroxide and/or oxide.