公开(公告)号：US20210379846A1

公开(公告)日：2021-12-09

申请号：US17282693

申请日：2019-10-03

Applicant: Essilor International

Inventor： Mathieu FEUILLADE ,  Pierre FROMENTIN ,  Maxime LECOMPERE ,  Pierre LEITE

IPC: B29D11/00 ,  G02C7/04 ,  B29C64/112

Abstract: Disclosed is a method for the manufacturing of an optical element having a refractive index above 1.59 by additive manufacturing to the optical element obtained by such a method and to an ophthalmic lens including such an optical element.

公开(公告)号：US20210116604A1

公开(公告)日：2021-04-22

申请号：US17051863

申请日：2019-04-29

Applicant: Essilor International

Inventor： Pierre FROMENTIN ,  Armel JIMENEZ ,  Waranya PHOMPAN

IPC: G02B1/04 ,  G02C7/04 ,  C08G18/24 ,  C08G18/38

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.

公开(公告)号：US20240227332A1

公开(公告)日：2024-07-11

申请号：US18563150

申请日：2022-05-25

Applicant: Essilor International

Inventor： Pierre FROMENTIN ,  Haifeng SHAN

IPC: B29D11/00 ,  B29C33/58 ,  B29C33/62 ,  B29C39/02 ,  B29K101/10 ,  B29L11/00

CPC classification number: B29D11/00519 ,  B29C33/58 ,  B29C33/62 ,  B29C39/026 ,  B29D11/0048 ,  B29D11/00865 ,  B29K2101/10 ,  B29L2011/0016

Abstract: A composite mold for manufacturing a thermoset optical article which is usable as an ophthalmic lens substrate and which comprises a microstructured main surface, to a method for manufacturing such a thermoset optical article, and to a method for obtaining the composite mold. The composite mold (1) comprises:·—a mineral first outer mold part (2) having a first inner surface (2a). and ·—an organic molding film (4) detachably bonded to the first inner surface (2a) and having a microstructured pattern configured to directly form said microstructured main surface after casting the thermosetting material (6) in contact with the organic molding film (4). The organic molding film (4) is hydrophobic at least on said microstructured pattern, and has a thickness of between 10 nm and 5001-1m.

公开(公告)号：US20220146712A1

公开(公告)日：2022-05-12

申请号：US17312469

申请日：2019-12-11

Applicant: Essilor International

Inventor： Supitchaya IAMSAARD ,  Pierre FROMENTIN

IPC: G02B1/04 ,  C08K5/353 ,  C08K9/10 ,  C08F2/44 ,  C08F2/04 ,  C08F2/50 ,  G02B3/00 ,  G02C7/10

Abstract: The present invention relates to ophthalmic lenses comprising an oxazolone, a preparation method thereof and the use of an oxazolone in an ophthalmic lens to absorb blue light.

公开(公告)号：US20210395561A1

公开(公告)日：2021-12-23

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 ,  C08G59/24 ,  C08G59/64 ,  C08G59/68 ,  C08G59/14 ,  C09D7/20 ,  G02B1/10 ,  G02B1/04

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.

公开(公告)号：US20210356769A1

公开(公告)日：2021-11-18

申请号：US17317070

申请日：2021-05-11

Applicant: ESSILOR INTERNATIONAL

Inventor： Aref JALLOULI ,  Hao-Wen CHIU ,  Pierre FROMENTIN ,  Ronald A. BERZON ,  Robert Alan VALERI

IPC: G02C7/10 ,  G02C7/12 ,  G02C7/02

Abstract: An ophthalmic lens including a substrate-independent adhesive primer for joining a functional element to a lens substrate. In particular, the ophthalmic lens includes at least one polymerized lens substrate including at least one thermoset monomer, a functional component including at least one thermoplastic layer, a surface of the at least one thermoplastic layer facing the polymerized lens substrate, and a primer coating deposited onto the surface of the at least one thermoplastic film facing the polymerized lens substrate.

公开(公告)号：US20200262967A1

公开(公告)日：2020-08-20

申请号：US16347347

申请日：2017-10-20

Applicant: Essilor International

Inventor： Pierre FROMENTIN

IPC: C08G18/75 ,  G02B1/04 ,  G02C7/10 ,  C08G18/28 ,  C08G18/24 ,  C08G18/08 ,  B29D11/00 ,  C08K5/3437 ,  C08K5/3417

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.

公开(公告)号：US20200241174A1

公开(公告)日：2020-07-30

申请号：US16637603

申请日：2018-08-08

Applicant: Essilor International

Inventor： Pierre FROMENTIN ,  Thanisararat SALEESUNG ,  Tipparat LERTWATTANASERI ,  Haipeng ZHENG ,  Robert VALERI ,  Ronald BERZON ,  Mathieu FEUILLADE

IPC: G02B1/14 ,  G02B1/04

Abstract: The invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix and an improved abrasion and/or scratch resistance. The substrate comprises an external layer in which particles functionalized by a silane coupling agent are embedded into the polymer matrix, the Bayer value of said substrate determined in accordance with the ASTM F735-81 standard being at least 30% greater than the Bayer value of the same substrate with no embedded particles.

公开(公告)号：US20190212473A1

公开(公告)日：2019-07-11

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 ,  C08F220/14

CPC classification number: C09B67/0004 ,  B82Y30/00 ,  C08F2/44 ,  C08F120/14 ,  C08F212/08 ,  C08F220/14 ,  C08K3/22 ,  C08K5/005 ,  G02B1/04 ,  G02B1/041 ,  G03C1/685 ,  C08L63/00 ,  C08L2666/70 ,  C08F2222/1013 ,  C08L33/12

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.

公开(公告)号：US20190169438A1

公开(公告)日：2019-06-06

申请号：US16323945

申请日：2017-08-09

Applicant: ESSILOR INTERNATIONAL

Inventor： Pierre FROMENTIN ,  Sanya HOKPUTSA

IPC: C09B67/08 ,  G03C1/685 ,  G02B1/04 ,  C08F120/14 ,  C08F2/44 ,  C08F212/08 ,  C08K3/22

Abstract: The present invention relates to a thermosetting composition for the manufacture of an ophthalmic lens which efficiently absorbs light rays without degradation of the light-absorbing additive, said composition comprising an allyl monomer or oligomer, a catalyst, at least one light-absorbing additive contained in nanoparticles which are dispersed in said allyl monomer or allyl oligomer. The present invention also relates to the use of said composition and to the ophthalmic lens obtained from said composition.