METHOD FOR AUTOMATICALLY INJECTING MONOMER FOR ARYL-BASED OPTICAL MATERIAL INTO MOLD

Title:

METHOD FOR AUTOMATICALLY INJECTING MONOMER FOR ARYL-BASED OPTICAL MATERIAL INTO MOLD

Document Type and Number:

WIPO Patent Application WO/2019/240370

Kind Code:

A1

Abstract:

The present invention relates to a method for manufacturing an optical material by injecting an aryl-based monomer solution into a cavity formed between a pair of molds having sealed outer edges and, more particularly, to a method for automatically injecting a monomer for an aryl-based optical material into a mold, in which a vision recognition system is used to inject an aryl-based monomer solution into the cavity, so as to enable quantitative injection within a short time. The present invention provides a method for automatically injecting a monomer for an aryl-based optical material into a mold, the method comprising the steps of: (a) preparing a monomer composition for an aryl-based optical material, the composition having a solid state refractive index of 1.537 to 1.585 and a viscosity of 20 to 800 cps at 25°C; (b) injecting most of the monomer composition into a cavity formed between a pair of molds, outer edges of which are sealed; and (c) detecting, following step (b), a fluid surface by using a vision recognition system while injecting the monomer composition into the cavity and terminating the injection of the monomer composition when the fluid surface is detected to have reached a configured final injection point. According to the present invention, the monomer solution for an aryl-based optical material can be automatically injected into a mold in a quantitative amount neither insufficiently nor excessively.

More Like This:

WO/2019/198034	EVALUATION METHOD FOR THE COVERAGE OF A COATING ON A CONTACT LENS SURFACE
WO/2006/121591	HYBRID CONTACT LENS SYSTEM AND METHOD OF FITTING
WO/2005/049517	MULTICORE MICROSTRUCTURED OPTICAL FIBRES FOR IMAGING

Inventors:

JANG DONG GYU (KR)
KIM JOON SUP (KR)

Application Number:

PCT/KR2019/004847

Publication Date:

December 19, 2019

Filing Date:

April 23, 2019

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KOC SOLUTION CO LTD (KR)

International Classes:

B29D11/00; C08F2/44; C08F218/04; C08F222/40; C08F290/06; C08K5/521

Foreign References:

KR20140023727A	2014-02-27
KR100897407B1	2009-05-14
JPH11105146A	1999-04-20
US20160325512A1	2016-11-10
KR20110111184A	2011-10-10
KR20120002573A	2012-01-06

Attorney, Agent or Firm:

YOU, Byung Sun (KR)

Download PDF:

View/Download PDF PDF Help

Previous Patent: DISPLAY DEVICE AND CONTROL METHOD THEREFOR

Next Patent: SEMICONDUCTOR LIGHT-EMITTING DEVICE