Toric ophthalmic lens
US11366336B2 · kind B2 · utility
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5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2017 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Aug 6, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To realize a toric ophthalmic lens including an edge that makes it possible to design a lens contributing to secondary cataract prevention without deteriorating a degree of freedom of lens design. The toric ophthalmic lens is a toric ophthalmic lens in which, in a top view of an optical portion, a substantially flat portion having a substantially fixed edge thickness of the optical portion is provided to overlap a steep meridian of a toric surface of the optical portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.