Multifocal lenses for pre-presbyopic individuals
US7159983B2 · kind B2 · utility
81Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Dec 15, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides lenses suitable for use by pre-presbyopic individuals. The lenses of the invention have one or more non-conic, aspheric surfaces having substantially no noticeable unwanted astigmatism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.