公开(公告)号：US11009724B2

公开(公告)日：2021-05-18

申请号：US16317762

申请日：2016-07-15

Applicant: Essilor International

Inventor： Haifeng Shan ,  Aref Jallouli ,  Hao-Wen Chiu ,  Srini Balasubramanian ,  Haipeng Zheng

IPC: G02C7/10 ,  G02B5/22 ,  G02B5/30 ,  G02B1/04 ,  G02C7/12

Abstract: Disclosed are polarized films containing specific light filters that block transmission of harmful electromagnetic radiation. Also disclosed are methods of producing said films as well as ophthalmic lenses having increased eye health.

公开(公告)号：US12226968B2

公开(公告)日：2025-02-18

申请号：US17623692

申请日：2020-07-01

Applicant: Essilor International

Inventor： Haifeng Shan ,  Aref Jallouli ,  Hao-Wen Chiu

IPC: B29D11/00 ,  B29C45/14 ,  B29L11/00 ,  B33Y80/00

Abstract: Disclosed herein is an injection molding method for making optical thermoplastic lenses using 3D—printed functional wafers. The method employs a variable injection molding cavity temperature that is heated to at least wafer Tg—10° C.

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

IPC: G02B5/20 ,  G02B1/04 ,  G02B5/22 ,  G02C7/10

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.

公开(公告)号：US12186999B2

公开(公告)日：2025-01-07

申请号：US17623692

申请日：2020-07-01

Applicant: Essilor International

Inventor： Haifeng Shan ,  Aref Jallouli ,  Hao-Wen Chiu

IPC: B29D11/00 ,  B29C45/14 ,  B29L11/00 ,  B33Y80/00

Abstract: Disclosed herein is an injection molding method for making optical thermoplastic lenses using 3D—printed functional wafers. The method employs a variable injection molding cavity temperature that is heated to at least wafer Tg—10° C.

公开(公告)号：US11994756B2

公开(公告)日：2024-05-28

申请号：US16973939

申请日：2019-06-11

Applicant: Essilor International

Inventor： Hao-Wen Chiu ,  Srinivasan Balasubramanian ,  Peiqi Jiang

IPC: G02C7/12 ,  B29D11/00 ,  G02B1/08 ,  G02B5/30 ,  G02C7/10

CPC classification number: G02C7/12 ,  B29D11/00009 ,  B29D11/00644 ,  B29D11/00923 ,  G02B1/08 ,  G02B5/3033 ,  G02C7/105

Abstract: Disclosed are methods for preparing partially polarized optical articles. A polarizing element is used to cover at least a portion of the front surface of an optical article to form a polarizing zone and a non-polarizing zone on the optical article. The optical article is then tinted to produce a gradual color transition between the polarizing zone and non-polarizing zone of the optical article.

公开(公告)号：US11697256B2

公开(公告)日：2023-07-11

申请号：US16480511

申请日：2018-01-26

Applicant: Essilor International

Inventor： Hao-Wen Chiu ,  Shannon Loiselle ,  Shawn Mcdermott

IPC: B29D11/00 ,  G02B5/00 ,  B29K69/00 ,  B29K105/00

CPC classification number: B29D11/0048 ,  B29D11/00692 ,  G02B5/003 ,  B29K2069/00 ,  B29K2105/0005 ,  B29K2909/08

Abstract: A method for injection molding of a weld line free minus power lens element comprises injecting a melt of thermoplastic material at a temperature higher than a glass transition temperature (Tg) of the thermoplastic material in an initial molding cavity delimited by two facing mold inserts, wherein the melt of thermoplastic material comprises at least one UV absorber. During the injecting, the two facing mold inserts are moved toward one another to define a final molding cavity whose volume is less than that of the initial molding cavity. After cooling and disassembling of the two facing mold inserts, the weld line free minus power lens element is recovered. One of the two facing mold inserts comprises a flat surface facing the initial molding cavity, thereby to form a flat surface on one side of the weld line free minus power lens element. The other of the two facing mold inserts comprises a convex surface facing the initial molding cavity, thereby to form a concave surface on an opposite side of the weld line free minus power lens element.

公开(公告)号：US11654644B2

公开(公告)日：2023-05-23

申请号：US16480551

申请日：2018-01-26

Applicant: Essilor International

Inventor： Hao-Wen Chiu ,  David Bracero ,  Shawn McDermott

IPC: B29D11/00 ,  G02B5/00 ,  B29K69/00 ,  B29K105/00

CPC classification number: B29D11/0048 ,  B29D11/00692 ,  G02B5/003 ,  B29K2069/00 ,  B29K2105/0005

Abstract: A method for injection molding of a plus power lens element comprises injecting a melt of thermoplastic material comprising at least one UV absorber at a temperature higher than a glass transition temperature (Tg) of the thermoplastic material in an initial molding cavity delimited by two facing mold inserts. During the injecting, the two facing mold inserts are moved toward one another to define a final molding cavity whose volume is less than that of the initial molding cavity. After cooling and opening of the mold cavity, the plus power lens element is recovered. One of the two facing mold inserts comprises a flat surface facing the initial molding cavity, thereby to form a flat surface on one side of the plus power lens element, and the other of the two facing mold inserts comprises a concave surface facing the initial molding cavity, thereby to form a convex surface on an opposite side of the plus power lens element.

公开(公告)号：US10695887B2

公开(公告)日：2020-06-30

申请号：US15768756

申请日：2015-10-21

Applicant: ESSILOR INTERNATIONAL

Inventor： Ronald A. Berzon ,  Aref Jallouli ,  Hao-Wen Chiu ,  Gary S. Clark

IPC: G02C7/02 ,  B24B13/005 ,  B24B47/22

Abstract: Disclosed are systems and processes for generating a finished or semi-finished lens, such as a spectacle lens, from a lens blank that includes an intermediate functional layer. Some embodiments of the process involve locating the functional layer and positioning the lens blank according to the location of the functional layer. The location of the functional layer can be ascertained by measuring the thickness of one or more layers of the lens blank. The lens blank can be surfaced on one or both sides to form a finished or semi-finished lens. Other embodiments are also described.