Liquid crystal lens in which a voltage imparts optimal first-stage optical properties to the liquid crystal lens by influencing a liquid crystal layer
US8194228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2007 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Jun 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The focal distance can be greatly changed by performing an electrical control in an optical element. The optical element comprises a first substrate having a first electrode, a second substrate, a second electrode arranged outside the second substrate, and a liquid crystal layer provided between the first substrate and the second substrate and constituted by liquid crystal molecules oriented. A first voltage is applied between the first electrode and the second electrode, thereby controlling the orientation of the liquid crystal molecules, whereby the optical element operates. A third electrode is provided on an insulating layer and outside the second electrode. A second voltage independent of the first voltage is applied to the third electrode, thereby changing the optical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.