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公开(公告)号：US20240230956A1
公开(公告)日：2024-07-11
申请号：US18558313
申请日：2022-06-09
发明人： Xingzhao DING , Hélène MAURY , Justine REDON , Coralie BARRAU , Gautier LAVAL , Frederic GUILLAIN , Caroline JOUSSELIN
摘要： Disclosed is an optical lens including a substrate having a front main face and a rear main face, at least one of the main faces including a multilayer antireflection coating having a stack of at least one high refractive index layer and at least one low refractive index layer, wherein the multilayer antireflection coating(s) present on the main face(s) provide(s) the optical lens with an average blue light reflection factor RmB3 within the wavelength range 440-460 nm, which is higher than or equal to 15%, for an angle of incidence ranging from 0° to 15°, and the spectral reflectivity curve of the multilayer antireflection coating has a reflection peak centered at a wavelength in the 340-420 nm range, and the reflection peak has a maximum reflectivity lower than or equal to 50% and exhibits a full width at half maximum higher than 70 nm.
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公开(公告)号：US20210380841A1
公开(公告)日：2021-12-09
申请号：US17341823
申请日：2021-06-08
IPC分类号： C09D183/06 , C09D5/00 , C09D175/04 , C09D7/61 , C09D7/63 , C09D7/65 , G02B1/14
摘要： The present invention relates to an optical article comprising a substrate having at least one main surface coated with a coating comprising at least one layer of an abrasion and/or scratch-resistant coating, wherein the abrasion and/or scratch-resistant coating is formed from a composition comprising at least one epoxy compound bearing at least one silicon atom having at least one hydrolysable group directly linked to the silicon atom and at least one group comprising an epoxy function linked to the silicon atom through a carbon atom, and/or a hydrolysate thereof, at least one plasticizer, a silane hydrolysate and colloidal silica, wherein the total amount of plasticizer in the composition is lower than 10 wt % of the dry extract of the total composition, and wherein the weight ratio of silane of formula (I) to plasticizer is higher than 0.4 in the dry extract of the composition. The invention further relates to a process for the manufacture of such an abrasion and/or scratch-resistant coating on a substrate.
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