Variable focus lens
US7311398B2 · kind B2 · utility
38Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Feb 25, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/1635
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variable focus lens for an eye comprising a transparent rear wall, a transparent front wall, a cavity formed between the transparent front wall and the transparent rear wall, first and second immiscible fluids of differing refractive index contained within said cavity, and electrodes to which a voltage is able to be applied to change the curvature of a fluid meniscus between the two fluids. At least the rear wall of the lens includes a biocompatible material, which material provides for biocompatibility of the lens with the eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.