公开(公告)号：US20220066079A1

公开(公告)日：2022-03-03

申请号：US17414799

申请日：2019-12-18

Applicant: ESSILOR INTERNATIONAL

Inventor： William TROTTIER-LAPOINTE ,  Alexis THEODEN ,  Philippe ROMAND ,  Surin MAIDAM

IPC: G02B5/28 ,  G02C7/02

Abstract: Disclosed is an optical article including a substrate having at least one main face coated with a reflective coating including 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, in which the thicknesses of the layers in the reflective coating have been optimized according to specific design rules in order to boost the abrasion resistance of the optical article.

公开(公告)号：US20200150314A1

公开(公告)日：2020-05-14

申请号：US16606075

申请日：2018-04-18

Applicant: Essilor International

Inventor： Nicolas MAITRE ,  Alexis THEODEN ,  Francisco DE AYGUAVIVES

IPC: G02B1/116 ,  G02C7/02

Abstract: The invention relates to an optical article comprising a substrate having at least one main face successively coated with a monolayer sub-layer having a thickness higher than or equal to 100 nm, 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, wherein the ratio is higher than or equal to 2, the outermost high refractive index layer(s) of the interferential coating do(es) not comprise TiO2, and the outermost low refractive index layer(s) of the interferential coating is (are) deposited without ionic assistance. R D = thickness   of   the   outermost   low   refractive   index layer  ( s )   of   the   interferential   coating thickness   of   the   outermost   high   refractive   index layer  ( s )   of   the   interferential   coating

公开(公告)号：US20190025471A1

公开(公告)日：2019-01-24

申请号：US15768156

申请日：2016-10-13

Applicant: ESSILOR INTERNATIONAL

Inventor： Alexis THEODEN ,  Mamonjy CADET

IPC: G02B1/14 ,  G02B27/00 ,  C07F7/18 ,  C08L71/02

Abstract: The present invention relates to an organosilane compound having at least one silicon atom bearing at least one hydrolysable group, at least one non-hydrolysable group comprising a hydrophilic group, and at least one non-hydrolysable group comprising a hydrophobic group having at least one fluorine atom, said hydrophilic group and said hydrophobic group not both comprising, in the main chain, the same substituent of the silicon atom. The invention further relates to an optical article having a substrate coated with a precursor coating of an anti-fogging coating formed by depositing said organosilane compound on the surface of the optical article. The precursor of the anti-fogging coating, which also has anti-fouling properties, is converted into the actual anti-fogging coating by application of a surfactant film to the surface thereof.