Title:
METHOD FOR DESIGNING AND MANUFACTURING DOUBLE-SIDED ASPHERICAL SURFACE OF CUSTOMIZED PROGRESSIVE MULTIFOCAL LENS, AND DEVICE FOR MANUFACTURING DOUBLE-SIDED ASPHERIC LENS BY USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/135498
Kind Code:
A1
Abstract:
The present invention relates to a method for designing and manufacturing a double-sided aspherical surface of a customized progressive multifocal lens, and provided are: a design method comprising at least one of a step of providing a customized progressive multifocal lens by applying a preform design utilizing individual parameters (characteristics/habits), a step of minimizing a distortion phenomenon, controlling astigmatism and minimizing maladaptive conditions of a wearer through an aspheric design for a myopic surface and an astigmatic surface, in which a double-sided aspherical surface design is applied to a convex surface (CC)/concave surface (CV), a step of applying a progressive multifocal lens thickness minimization design so as to increase wearing comfort and improve an aesthetic effect, and a step of dividedly applying an addition (Di, unit: diopter) to a convex surface (CC), which is a front surface, and a concave surface (CV), which is a back surface, in a near vision viewing part, so as to respectively reduce the astigmatism and maladaptation of the wearer; and a manufacturing method comprising a method for designing, as an aspherical surface, a convex surface (CC) which is a front surface of a blank product (half-finished product), and applying an aspheric design to an inner surface of the lens through a preform processing method, and a method for applying a design for producing, as aspherical surfaces, both surfaces of a blank product (half-finished product) or a blank product (finished product), that is a convex surface (CC), which is a front surface, and a concave surface (CV), which is a back surface.
Inventors:
JIN JAE HONG (KR)
Application Number:
PCT/KR2018/015116
Publication Date:
July 11, 2019
Filing Date:
November 30, 2018
Export Citation:
Assignee:
HANMI SWISS OPTICAL CO LTD (KR)
International Classes:
B24B13/00; B24B13/06; B24B49/12; B24B55/02
Foreign References:
| KR20080056752A | 2008-06-23 | |||
| KR20160087243A | 2016-07-21 | |||
| KR20100068501A | 2010-06-23 | |||
| KR100978799B1 | 2010-08-30 |
Other References:
MIN, GIL HONG ET AL.: "That's Why the FreeForm Progressive Lens Is Succesful", THE KOREA OPTICAL NEWS, 16 December 2011 (2011-12-16), Retrieved from the Internet [retrieved on 20190128]
Attorney, Agent or Firm:
SESHIN PATENT&LAW FIRM (KR)
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