Title:
CONTACT LENS HAVING MULTI-LAYERED WAVELENGTH PLATE
Document Type and Number:
WIPO Patent Application WO/2023/090839
Kind Code:
A1
Abstract:
The present invention relates to a contact lens having a multi-layered wavelength plate, the contact lens having two or more wavelength plates arranged between a corneal protective layer and a lens surface layer of the contact lens so that the number of focuses can be increased, and comprising: a lens surface layer; a corneal protective layer; and a wavelength plate layer on which two or more wavelength plates made of a birefractive material are stacked, and which is arranged between the lens surface layer and the corneal protective layer, wherein, in the wavelength plate layer, the phases of wavelength plates that neighbor each other have opposite phase codes so as to be in a mutually complementary relationship.
More Like This:
Inventors:
SONG SEOK HO (KR)
Application Number:
PCT/KR2022/018056
Publication Date:
May 25, 2023
Filing Date:
November 16, 2022
Export Citation:
Assignee:
UNIV HANYANG IND UNIV COOP FOUND (KR)
International Classes:
G02C7/04; G02C7/06; G02C7/08
Domestic Patent References:
| WO2016021075A1 | 2016-02-11 |
Foreign References:
| US20160363784A1 | 2016-12-15 | |||
| US20190041633A1 | 2019-02-07 | |||
| US20160047956A1 | 2016-02-18 | |||
| KR20010033714A | 2001-04-25 |
Attorney, Agent or Firm:
KIM, Youn Gwon (KR)
Download PDF: