公开(公告)号：US12139573B2

公开(公告)日：2024-11-12

申请号：US17598018

申请日：2020-03-27

Applicant: HOYA LENS THAILAND LTD.

Inventor： Masahisa Kousaka ,  Yukio Kageyama ,  Tomofumi Ohnishi ,  Yoshio Sano

IPC: C08G18/38 ,  C08G18/75 ,  C08G18/76 ,  G02B1/04 ,  G02C7/02

Abstract: A polymerizable composition for optical components, which can prevent striae while keeping strength for optical components when a thick optical component is produced. A polymerizable composition for optical components is a mixture of a first composition including a polyisocyanate compound (A) and a second composition including a polythiol compound (B1) and a thiol group-containing substance (B2), the composition includes the thiol group-containing substance (B2) showing peak at a position at retention time three minutes or more from a peak of the polythiol compound (B1) in a chromatogram obtained by analyzing the composition by high performance liquid chromatography (HPLC) analysis, and the ratio (A/B1) is 80/100 to 95/100, wherein the equivalent ratio (A/B1) is an equivalent A of the polyisocyanate compound (A) using a weight and group number of the polyisocyanate compound (A) to B1 of the polythiol compound (B1) using a weight and group number of the polythiol compound (B1).

公开(公告)号：US11072097B2

公开(公告)日：2021-07-27

申请号：US16019208

申请日：2018-06-26

Applicant: HOYA LENS THAILAND LTD.

Inventor： Yoshio Sano ,  Hiroshi Shimizu

IPC: B29C33/38 ,  B29D11/00 ,  B29K105/00

Abstract: A lens-mold producing method includes a position and posture determining step of specifying positions and postures, in space coordinates, of a first mold having a molding surface for forming one optical surface of a lens and a second mold having a molding surface for forming the other optical surface, a mold holding step of rotating and/or inclining, based on the positions and postures in the space coordinates, at least one of the first and second mold, maintaining a rotation angle and/or an inclination angle of a reference plane of the first mold with respect to a reference plane of the second mold, and holding the first and second mold, and an assembling step of arranging the molding surfaces of the first and second mold so as to face each other, fixing outer peripheries of the first mold and the second mold, and assembling a lens mold.