Controllable optical lens
US7612948B2 · kind B2 · utility
16Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2005 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Apr 23, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A controllable optical lens system, comprises a chamber housing first and second fluids, the interface between the fluids defining a lens surface. An electrode arrangement controls the shape of the lens surface and has first and second electrodes. A parameter is determined by the system dependent on the electrical resistance through at least one of the lens fluids between the first and second electrodes. Thus, the series resistance through a lens fluid is used as a measure of meniscus position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.