公开(公告)号：DE60303817D1

公开(公告)日：2006-04-27

申请号：DE60303817

申请日：2003-08-04

Applicant: ESSILOR INT

Inventor： REED A ,  BORYSLAWSKI JOSEPH

IPC: B29D11/00 ,  G02C13/00 ,  B29C33/00 ,  B29C33/10 ,  B29C39/02 ,  B29C39/26 ,  B29L11/00 ,  G02B1/04

Abstract: A method for making an organic glass lens or lens blank which comprises providing a two-piece mold defining a molding cavity having a vertical axis which is part of a fixed reference system comprising said vertical axis and a horizontal axis which intersects at the center of the mold, a liquid tight annular closure member disposed at the periphery of the mold pieces for maintaining the two mold pieces and closing the molding cavity, wherein the annular closure member comprises at least a portion thereof made of a material that is initially gas permeable but becomes gas impermeable when in contact with a liquid polymerizable composition.

公开(公告)号：DE60303817T2

公开(公告)日：2006-11-16

申请号：DE60303817

申请日：2003-08-04

Applicant: ESSILOR INT

Inventor： REED A ,  BORYSLAWSKI JOSEPH

IPC: B29D11/00 ,  G02C13/00 ,  B29C33/00 ,  B29C33/10 ,  B29C39/02 ,  B29C39/26 ,  B29L11/00 ,  G02B1/04

Abstract: A method for making an organic glass lens or lens blank which comprises providing a two-piece mold defining a molding cavity having a vertical axis which is part of a fixed reference system comprising said vertical axis and a horizontal axis which intersects at the center of the mold, a liquid tight annular closure member disposed at the periphery of the mold pieces for maintaining the two mold pieces and closing the molding cavity, wherein the annular closure member comprises at least a portion thereof made of a material that is initially gas permeable but becomes gas impermeable when in contact with a liquid polymerizable composition.