公开(公告)号：CA2691219C

公开(公告)日：2015-09-08

申请号：CA2691219

申请日：2008-06-17

Applicant: ESSILOR INT

Inventor： BERZON RONALD ,  CHEN XU ,  DANG HOA THIEN ,  HARMON RONALD ,  LOCKWOOD MATTHEW ,  OBORDO JOEY OLIVEROS ,  VALERI ROBERT ALAN

IPC: B29D11/00 ,  B29C37/00 ,  B29C45/04

Abstract: A method and coating used to prepare a photo chromically-enabled bifocal ophthalmic lens. The method and equipment includes injection molding a single vision lens (10e), for example, from polycarbonate. The clamp opens vertically and the top insert (20) is exchanged for a bifocal mold (30) having a base curve similar to the single vision lens. The thermos et coating includes compounds from several acrylate classes, and is applied to the single vision lens. The coating may include a photochromic dye. The coating is also formulated to receive a photochromic solution through an imbibition process.

公开(公告)号：DE60144293D1

公开(公告)日：2011-05-05

申请号：DE60144293

申请日：2001-12-20

Applicant: ESSILOR INT

Inventor： JALLOULI AREF BEN AHMED ,  OBORDO JOEY OLIVEROS ,  TURSHANI YASSIN YUSEF

IPC: C08G75/08 ,  G02B3/00 ,  C07D331/02 ,  C08G75/02 ,  C08G75/14 ,  G02B1/04

公开(公告)号：CA2691219A1

公开(公告)日：2008-12-24

申请号：CA2691219

申请日：2008-06-17

Applicant: ESSILOR INT

Inventor： BERZON RONALD ,  CHEN XU ,  DANG HOA THIEN ,  HARMON RONALD ,  LOCKWOOD MATTHEW ,  OBORDO JOEY OLIVEROS ,  VALERI ROBERT ALAN

IPC: B29D11/00 ,  B29C37/00 ,  B29C45/04

Abstract: A method and coating used to prepare a photo chromically-enabled bifocal ophthalmic lens. The method and equipment includes injection molding a single vision lens (10e), for example, from polycarbonate. The clamp opens vertically and the top insert (20) is exchanged for a bifocal mold (30) having a base curve similar to the single vision lens. The thermos et coating includes compounds from several acrylate classes, and is applied to the single vision lens. The coating may include a photochromic dye. The coating is also formulated to receive a photochromic solution through an imbibition process.

公开(公告)号：AU2002351825B2

公开(公告)日：2008-02-14

申请号：AU2002351825

申请日：2002-11-04

Applicant: ESSILOR INT

Inventor： KEITA GABRIEL ,  TURSHANI YASSIN YUSEF ,  MCCLIMANS PAMELA ANNE ,  OBORDO JOEY OLIVEROS

IPC: C08G18/72 ,  C08G18/10 ,  C08G18/38 ,  G02B1/04

Abstract: A method of fast curing polythiourethane transparent casted substrate, usable for making optical articles such as ophthalmic lenses, which comprises the steps of: 1) Providing a first component A comprising a polythiourethane prepolymer having isocyanate or isothiocyanate end groups and a viscosity at 25° C. ranging from 0.02 to 0.4 Pa.s; 2) Providing a second component B comprising a polythiourethane prepolymer having thiol (SH) end groups and a viscosity at 25° C. ranging from 0.2 to 2.0 Pa.s; 3) Mixing together first and second components A and B and filling a moulding cavity of a casting mould assembly with the resulting mixture; 4) Curing said mixture to obtain a transparent solid substrate, said curing step comprising: a) a first step for polymerizing said mixture to obtain a gel within 1 to 10 minutes; and b) a second step of post-curing the gel to obtain the transparent solid substrate; and 5) Recovering the transparent solid substrate from the mould.