公开(公告)号：US20240399685A1

公开(公告)日：2024-12-05

申请号：US18678916

申请日：2024-05-30

Applicant: Alcon Inc.

Inventor： Richard Charles Breitkopf ,  Newton T. Samuel ,  Ya-Wen Chang ,  Zahra Bassampour ,  Steve Yun Zhang

IPC: B29D11/00 ,  B29C33/42 ,  B29C39/00 ,  B29C39/02 ,  B29C39/10 ,  B29C39/26 ,  B29K83/00 ,  B29K105/00 ,  B29K683/00 ,  B29L11/00

Abstract: The invention provides a method for producing embedded contact lenses involving a mold set in a two-curing-step process and a fast-curing SiHy lens formulation. The mold set consists of three mold halves, one of which is used twice, the first time for molding an insert from an insert-forming composition and the second time for an embedded contact lens with the molded insert embedded therein from the fast curing SiHy lens formulation that comprises a N,N-dialkylacrylamide, a hydrophilic (meth)acrylamido monomer, and a polysiloxane vinylic crosslinker and being free of any siloxane-containing vinylic monomer.

公开(公告)号：US20240399684A1

公开(公告)日：2024-12-05

申请号：US18678833

申请日：2024-05-30

Applicant: Alcon Inc.

Inventor： Newton T. Samuel ,  Ya-Wen Chang ,  Richard Charles Breitkopf ,  Augustine Twum Kumi ,  Steve Yun Zhang ,  David Borja ,  Ethan Leveillee ,  Joseph Michael Lindacher

IPC: B29D11/00 ,  B29C35/08 ,  B29K105/24 ,  B29L11/00 ,  G02B1/04

Abstract: The invention provides a method for producing embedded diffractive contact lenses involving use of a mold set in two-curing steps. The mold set consists of three mold halves, one of which is used twice, the first time for molding a diffractive insert and the second time for an embedded contact lens with the molded diffractive insert embedded therein. The twice-used mold half has been treated with a corona plasma or a vacuum UV in a central circular area having a diameter equal to or smaller than the diameter of the insert to ensure that the molded insert consistently adheres to the twice-used mold half, even though the other mating insert mold half for molding the diffractive insert has a great tendency to bind strongly the molded insert due to the diffractive structure on its molding surface.

公开(公告)号：US20230382065A1

公开(公告)日：2023-11-30

申请号：US18322651

申请日：2023-05-24

Applicant: Alcon Inc.

Inventor： Jing Cheng ,  Michelle Plavnik ,  Ya-Wen Chang ,  Feng Jing ,  Steve Yun Zhang

IPC: B29D11/00

CPC classification number: B29D11/00134 ,  B29D11/00442 ,  B29D11/0048

Abstract: A method for producing embedded hydrogel contact lenses comprises at least the following steps: obtaining an insert made of a crosslinked polymeric material comprising repeating units of a free-radical photoinitiator; placing the insert in a female lens mold half; dosing an amount of a lens-forming composition to immerse the insert in the female lens mold half; closing tightly a male lens mold half onto the top of the female lens mold half halves to form a molding assembly; actinically curing both the lens-forming composition in the molding assembly to form an embedded hydrogel lens precursor which comprises a bulk hydrogel material formed the lens-forming composition and the insert that is embedded therein and covalently linked to the bulk hydrogel material.

公开(公告)号：US20240399686A1

公开(公告)日：2024-12-05

申请号：US18678966

申请日：2024-05-30

Applicant: Alcon Inc.

Inventor： Zahra Bassampour ,  Steve Yun Zhang ,  Lilanni Perez ,  Ashanti Smith ,  Nicholas Gober ,  Ya-Wen Chang ,  Newton T. Samuel ,  Richard Charles Breitkopf

IPC: B29D11/00 ,  B29K23/00 ,  B29K83/00 ,  B29K105/00 ,  B29K105/20 ,  G02C7/04

Abstract: The invention provides a method for producing delamination-resistant embedded contact lenses involving use of a mold set in two-curing steps and a special lens-forming composition for forming a bulk hydrogel material for embedding a crosslinked polymeric insert. The mold set consists of three mold halves, one of which is used twice, the first time for molding an insert from an insert-forming composition and the second time for an embedded contact lens with the molded insert embedded therein from the special lens-forming composition that a vinylic crosslinking agent and or organic solvent both of which independent of each other can swell an insert by a moderate swelling degree. The resultant embedded hydrogel contact lenses can be free of deformation and delamination.

公开(公告)号：US20240288713A1

公开(公告)日：2024-08-29

申请号：US18588279

申请日：2024-02-27

Applicant: Alcon Inc.

Inventor： Ethan Leveillee ,  Joseph Michael Lindacher ,  David Borja ,  Ying Pi ,  Newton T. Samuel ,  Ya-Wen Chang

IPC: G02C7/04 ,  B29D11/00 ,  G02C7/02 ,  B29K29/00

CPC classification number: G02C7/049 ,  B29D11/00057 ,  B29D11/00317 ,  B29D11/0048 ,  G02C7/021 ,  B29C2795/007 ,  B29K2029/04

Abstract: An embedded contact lens that comprises a lens body that has an anterior surface and an opposite posterior surface. The lens body is composed of a bulk hydrogel material and a circular insert embedded in the bulk hydrogel material and comprises an annular mask on the anterior surface or the posterior surface of the lens body. The circular insert comprises a peripheral edge. Both the annular mask and the insert are concentric with a central axis of the lens body. The annular mask is an opaque colored area that covers or overlaps the peripheral edge of the circular insert to minimize or eliminate optical disturbances induced by peripheral edge of the circular insert.

公开(公告)号：US20250052927A1

公开(公告)日：2025-02-13

申请号：US18795402

申请日：2024-08-06

Applicant: Alcon Inc.

Inventor： Ya-Wen Chang ,  Steve Yun Zhang

IPC: G02B1/04 ,  B29D11/00 ,  C08L83/04 ,  C09B69/10 ,  G02C7/04 ,  G02C7/10

Abstract: Described herein is a UV/HEVL-filtering SiHy contact lens that not only has a relatively high UV/HEVL filtering capability but also has an aesthetic appealing color. The bulk silicone hydrogel of the UV/HEVL-filtering SiHy contact lens comprises repeating units of (1) at least one hydrophilic vinylic monomer, (2) at least one siloxane-containing vinylic monomer and/or at least one polysiloxane vinylic crosslinker, (3) at least one UV-absorbing vinylic monomer, and (4) a least one polymerizable HEVL-absorbing compound capable of absorbing HEVL between 380 nm and 450 nm and also comprises at least one blue-tinting agent and at least one optical brightener distributed therein.

公开(公告)号：US20240399627A1

公开(公告)日：2024-12-05

申请号：US18678872

申请日：2024-05-30

Applicant: Alcon Inc.

Inventor： Ya-Wen Chang ,  Newton T. Samuel ,  Steve Yun Zhang ,  Feng Jing

IPC: B29C39/02 ,  B29C33/42 ,  B29C33/56 ,  B29C39/00 ,  B29C39/10 ,  B29C39/26 ,  B29D11/00 ,  B29K83/00 ,  B29K105/00 ,  B29K105/24 ,  B29L11/00

Abstract: The invention provides a method for producing embedded contact lenses involving steps of use of a set of 3 mold halves in two-curing steps. One of the 3 mold halves have been used twice, the first time for molding an insert and the second time for molding the embedded hydrogel contact lens. The twice-used mold half has been treated with a corona plasma or a vacuum UV in a central circular area of its molding surface having a diameter equal to or smaller than the diameter of the insert to ensure that the molded insert consistently adhered to the twice-used mold half. The method also comprises a step of forming a reactive polysiloxane coating that is covalently attached onto the back or front surface of a molded insert adhered on the twice-used mold half before molding the embedded contact lens in the 2nd curing step.

公开(公告)号：US20240288712A1

公开(公告)日：2024-08-29

申请号：US18588225

申请日：2024-02-27

Applicant: Alcon Inc.

Inventor： Ethan Leveillee ,  Joseph Michael Lindacher ,  David Borja ,  Ying Pi ,  Newton T. Samuel ,  Ya-Wen Chang

IPC: G02C7/04

CPC classification number: G02C7/04

Abstract: A bi-layer contact lens having an insert embedded in a bulk hydrogel material. The insert comprises at least one peripheral edge, wherein the peripheral edge of the insert is configured to provide improved lens performance by selective application of at least one design parameter selected from width, angle, shape configuration, and combinations thereof the peripheral edge of the insert.