Electro-active spectacle employing modal liquid crystal lenses
US7404636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2005 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Jan 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13415
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An electro-active spectacle lens is disclosed. The spectacle lens comprises a first substrate having a first outer region and first inner region, a first electrode layer disposed adjacent to the first inner region, the first electrode layer including an outer electrode region having a first conductivity and an inner electrode region having a second conductivity, the first conductivity being greater than the second conductivity, a second substrate having a second outer region and second inner region, a second electrode layer disposed adjacent to the second inner region, the second electrode layer having a third conductivity, and an electro-active cell disposed between the first electrode layer and the second electrode layer, the electro-active cell containing an electro-active material. The first outer region and second outer region are configurable for fitting the spectacle lens within a lens frame without altering the electro-active cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.