Ophthalmic lenses useful in correcting astigmatism and presbyopia
US6582076B1 · kind B1 · utility
88Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2000 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Aug 30, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/044
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention includes an ophthalmic lens having a convex surface and an opposite concave surface where one of said surfaces contains alternating distance and near power zones where one or more distance zones have cylinder power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.