Invention Grant
- Patent Title: Multifocal lens having reduced visual disturbances
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Application No.: US15051765Application Date: 2016-02-24
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Publication No.: US10675146B2Publication Date: 2020-06-09
- Inventor: Myoung-Taek Choi , Xin Hong , Yueai Liu
- Applicant: NOVARTIS AG
- Applicant Address: CH Fribourg
- Assignee: Alcon Inc.
- Current Assignee: Alcon Inc.
- Current Assignee Address: CH Fribourg
- Main IPC: A61F2/16
- IPC: A61F2/16 ; G02C7/04

Abstract:
A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
Public/Granted literature
- US20170239038A1 MULTIFOCAL LENS HAVING REDUCED VISUAL DISTURBANCES Public/Granted day:2017-08-24
Information query
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