Double-layer liquid crystal lens apparatus
US8248576B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2010 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Mar 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/294
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A double-layer liquid crystal lens apparatus having two liquid lens structures is provided. A driving voltage of each liquid crystal lens structure is controlled by an active device disposed thereon. When an incident light is passing through the liquid crystal lens structures, the optical path difference of the incident light is compensated by the liquid crystal lens structures, so that the double-layer liquid crystal lens apparatus performs the focusing function well without using a polarizer. Applying a suitable driving voltage on each of the active devices, the double-layer liquid crystal lens apparatus has a function of modulating focal length focusing/diverging the light, like a convex lens or a concave lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.