Multifocal contact lens and method of manufacture thereof
US7044597B2 · kind B2 · utility
3Cited by
69References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Dec 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical zone for a lens has a center optical axis. A first region of the optical zone includes a first optical curve having a first optical axis that is collinear with the center optical axis. A plurality of secondary regions is formed within the first region. Each of the secondary regions has a respective secondary optical curve with a corresponding secondary optical axis. Each secondary optical axis is collinear with the first optical axis. Each of the secondary optical curves is decentered relative to the first optical curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.