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公开(公告)号：US11635547B2
公开(公告)日：2023-04-25
申请号：US16770466
申请日：2018-11-15
Applicant: ESSILOR INTERNATIONAL
Inventor： Pierre Fromentin , Tipparat Lertwattanaseri
IPC: G02B1/04 , C08K3/22 , C08K3/36 , C08K5/00 , C08K5/132 , C08K5/18 , C08F222/10 , C08L35/02 , C08K5/3475 , C08K5/3492
Abstract: The present invention relates to an ophthalmic lens which efficiently absorbs light rays without degradation of the light-absorbing additive, said ophthalmic lens comprising a composite matrix, a catalyst, a UV absorber and at least one light-absorbing additive contained in nanoparticles which are dispersed in said allyl monomer or allyl oligomer.
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公开(公告)号：US10370520B2
公开(公告)日：2019-08-06
申请号：US15319260
申请日：2015-06-23
Inventor： Pierre Fromentin
IPC: G02B1/04 , C08K5/3435 , C08K5/3475 , C08K5/3492 , C08K5/372
Abstract: The present invention relates to a thermosetting composition for the manufacture of an ophthalmic lens which efficiently absorbs ultraviolet (UV) rays without exhibiting undesirable yellowing, said composition comprising an allyl monomer or oligomer, a catalyst, a UV-absorber and a specific anti-yellowing additive. The present invention also relates to the use of said composition and to the ophthalmic lens obtained from said composition.
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公开(公告)号：US12196989B2
公开(公告)日：2025-01-14
申请号：US17442473
申请日：2020-03-23
Applicant: Essilor International
Inventor： Pierre Fromentin , Harutsai Waipunya , Haifeng Shan , Hao-Wen Chiu
Abstract: Disclosed are optical elements that contains two or more near infrared absorbers and methods of producing the same. Two near infrared absorbers with different near infrared wavelengths absorption ranges and residual colors are mixed with a precursor of an optical substrate. The resulting mixture is subsequently processed to produce optical elements that have a broad near infrared wavelength absorption range and a neutral residual color.
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公开(公告)号：US11124599B2
公开(公告)日：2021-09-21
申请号：US16347347
申请日：2017-10-20
Applicant: ESSILOR INTERNATIONAL
Inventor： Pierre Fromentin
IPC: C08G18/75 , B29D11/00 , C08G18/08 , C08G18/24 , C08G18/28 , C08K5/3417 , C08K5/3437 , G02B1/04 , G02C7/10 , B29K75/00 , B29K105/00
Abstract: The present invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix and at least one near infrared absorber, wherein TVIS is higher than or equal to 70%, TNIR is lower than or equal to 85%, TNIR and TVIS being respectively the average optical transmittance in the 780-1400 nm and in the 380-780 nm wavelength range for the optical material through a 2 mm thick layer of said optical material. This optical article can be used to protect from noxious infrared light.
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公开(公告)号：US10308618B2
公开(公告)日：2019-06-04
申请号：US16076426
申请日：2017-02-07
Applicant: ESSILOR INTERNATIONAL
Inventor： Pierre Fromentin , Tipparat Lertwattanaseri
IPC: C07D249/20 , G02B1/04 , C08F220/36 , C08F20/36
Abstract: Optical material comprising a polymer matrix and at least one benzotriazole compound having at least one ester group, wherein said at least one benzotriazole is a chlorobenzotriazole compound that does not comprise any polymerizable group selected from allylic, acrylic and methacrylic moieties, or the optical transmittance through a 2 mm thick layer of said optical material is lower than 1% for each light wavelength ranging from 280 to 400 nm, and higher than 65% for light having a wavelength of 430 nm. This optical material can be used to protect from phototoxic blue light and UV light.
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Patent Agency Ranking
公开(公告)号：US12221555B2
公开(公告)日：2025-02-11
申请号：US17292797
申请日：2019-11-13
Applicant: Essilor International
Inventor： Hui Yu , Sunil Madhukar Bhangale , Prakhar Kasture , Pierre Fromentin
IPC: C09D163/00 , C08G59/14 , C08G59/24 , C08G59/64 , C08G59/68 , C09D7/20 , G02B1/04 , G02B1/10 , G02B5/00
Abstract: The present invention relates to a cross-linkable composition comprising an epoxy oligomer comprising at least six hydroxy groups, to a coating obtained by curing the cross-linkable composition and to an optical lens comprising said coating on a surface thereof, in particular on the edge surface thereof. The invention also relates to a method of preparing a coating for an optical lens and to a method of coating a surface of an optical lens, in particular the edge surface of an optical lens.
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公开(公告)号：US11774636B2
公开(公告)日：2023-10-03
申请号：US17051863
申请日：2019-04-29
Applicant: Essilor International
Inventor： Pierre Fromentin , Armel Jimenez , Waranya Phompan
CPC classification number: G02B1/043 , C08G18/242 , C08G18/3868 , G02C7/04
Abstract: The present invention relates to an optical material cutting blue light, comprising at least one UV absorber that at least partially blocks light having a wavelength ranging from 400 to 450 nm, at least one absorbing dye A having its maximum absorption wavelength in the range from 520 nm to 640 nm, the optical material being made of a material chosen from polythiourethane materials, polyurethane urea materials, materials resulting from the polymerization or copolymerization of polyepisulfide monomers or oligomers, and materials resulting from the polymerization or copolymerization of allylic monomers or oligomers, the optical material having a colorimetric coefficient b* as defined in the CIE (1976) L*a*b* international colorimetric system that is lower than or equal to 6, and a hue angle h higher than or equal to 120° and lower than or equal to 180°, for an optical material thickness of 2 mm.
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公开(公告)号：US11725136B2
公开(公告)日：2023-08-15
申请号：US16958440
申请日：2018-12-19
Applicant: Essilor International
Inventor： John Biteau , Ronald Berzon , Pierre Fromentin
CPC classification number: C09K9/02 , B01J13/18 , B01J13/22 , C08L31/06 , G02B1/041 , G02C7/102 , C08L2207/53 , C08L2310/00 , C09K2211/1018
Abstract: An ophthalmic lens comprising a transparent polymer matrix and core shell nanoparticles which are dispersed in the transparent polymer matrix, wherein the core of core shell nanoparticles results from polymerization of a composition comprising nanoparticle core precursors and at least one photochromic compound, and the shell of core shell nanoparticles comprises a mineral compound.
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公开(公告)号：US11204445B2
公开(公告)日：2021-12-21
申请号：US16323971
申请日：2017-08-09
Applicant: ESSILOR INTERNATIONAL
Inventor： Pierre Fromentin , Tipparat Lertwattanaseri , Waranya Phompan , Sanya Hokputsa
IPC: G02B1/04 , B29D11/00 , C08F220/14 , C08K9/12 , C08F2/44 , C08F120/14 , C08F212/08 , C08K3/22 , C09B67/08 , G03C1/685 , B82Y30/00 , C08K5/00
Abstract: The present invention relates to an ophthalmic lens which efficiently absorbs light rays comprising a composition derived from a monomer or oligomer, a catalyst, at least one light-absorbing additive contained in nanoparticles which are dispersed in said monomer or oligomer.
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公开(公告)号：US12138872B2
公开(公告)日：2024-11-12
申请号：US16982957
申请日：2019-06-03
Applicant: Essilor International
Inventor： Mathieu Feuillade , Pierre Fromentin , Gregory Hervieu , David Montoya , Aref Jallouli
IPC: B29C64/393 , B29C64/129 , B29D11/00 , B33Y10/00 , B33Y50/02 , B33Y80/00 , G02C7/10
Abstract: Disclosed is a method of manufacturing an ophthalmic lens having at least one optical function, including the determination of a transmission spectrum in a wavelength range from 280 to 2000 nm, the determination of a matrix including at least two compounds absorbing light having a wavelength from 280 to 2000 nm, with regard to the determined transmission spectrum, and additively manufacturing the matrix.
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