Invention Grant
- Patent Title: Multifocal diffractive ophthalmic lens
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Application No.: US16373092Application Date: 2019-04-02
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Publication No.: US11000366B2Publication Date: 2021-05-11
- Inventor: Myoung-Taek Choi , Xin Hong , Yueai Liu
- Applicant: NOVARTIS AG
- Applicant Address: CH Basel
- Assignee: NOVARTIS AG
- Current Assignee: NOVARTIS AG
- Current Assignee Address: CH Basel
- Main IPC: A61F2/16
- IPC: A61F2/16 ; G02C7/04 ; G02C7/06 ; G02B5/18

Abstract:
A multifocal ophthalmic lens includes an ophthalmic lens and a diffractive element. The ophthalmic lens has a base curvature corresponding to a base power. The diffractive element produces constructive interference in at least four consecutive diffractive orders corresponding a range of vision between near and distance vision. The constructive interference produces a near focus, a distance focus corresponding to the base power of the ophthalmic lens, and an intermediate focus between the near focus and the distance focus.
Public/Granted literature
- US20190224001A1 MULTIFOCAL DIFFRACTIVE OPHTHALMIC LENS Public/Granted day:2019-07-25
Information query
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