公开(公告)号：US12263655B2

公开(公告)日：2025-04-01

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 ,  B29C64/112 ,  G02C7/04 ,  B33Y10/00

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：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.

公开(公告)号：US11852784B2

公开(公告)日：2023-12-26

申请号：US16637588

申请日：2018-08-08

Applicant: Essilor International

Inventor： Pierre Fromentin ,  Hélène Maury ,  Francisco De Ayguavives ,  Thanisararat Saleesung

IPC: G02B1/111 ,  G03B21/625

CPC classification number: G02B1/111 ,  G03B21/625

Abstract: The invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix and an improved light transmission in the visible range. The substrate comprises an external layer in which particles are embedded into the polymer matrix, the refractive index of the particles Rp being lower than the refractive index of the polymer matrix Rs.

公开(公告)号：US11480713B2

公开(公告)日：2022-10-25

申请号：US16498041

申请日：2018-03-27

Applicant: Essilor International

Inventor： Tipparat Lertwattanaseri ,  Pierre Fromentin

IPC: G02B1/04 ,  C08F18/24 ,  G02C7/02 ,  G02C7/10

Abstract: Disclosed are polymerizable compositions for ophthalmic lenses. The compositions employ peroxide-based polymerization initiators with decreased capacity for dye degradation. The compositions enable the inclusion of color-balancing dyes, resulting in lenses with improved clarity and color balance.

公开(公告)号：US11327202B2

公开(公告)日：2022-05-10

申请号：US16323945

申请日：2017-08-09

Applicant: ESSILOR INTERNATIONAL

Inventor： Pierre Fromentin ,  Sanya Hokputsa

IPC: G02B1/04 ,  C08F220/14 ,  C08K9/12 ,  B29D11/00 ,  C08F2/44 ,  C08F120/14 ,  C08F212/08 ,  C08K3/22 ,  C09B67/08 ,  G03C1/685 ,  B82Y30/00 ,  C08K5/00

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.

公开(公告)号：US20190107647A1

公开(公告)日：2019-04-11

申请号：US16095556

申请日：2017-04-21

Applicant: ESSILOR INTERNATIONAL

Inventor： Pierre Fromentin

IPC: G02B1/04 ,  C07D249/20 ,  C08G18/52 ,  C08G18/72 ,  C08L69/00

Abstract: The present invention relates to an eyeglass lens comprising a substrate made of an optical material comprising a polymer matrix and at least one 2-(2-hydroxy-5-R1-phenyl)benzotriazole, in which R1 is a resonant group, the optical transmittance through a 2 mm thick layer of said optical material being lower than 1% for each light wavelength ranging from 280 to 405 nm. This eyeglass lens protects from phototoxic blue light and UV light.