Tunable liquid crystal optical device
US9448456B2 · kind B2 · utility
2Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2013 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Feb 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/291
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal optical device has a layered structure with split liquid crystal layers having alignment surfaces that define in a liquid crystal material pre-tilt angles of opposite signs. Four liquid crystal layers can provide two directions of linear polarization. In the case of a lens, the device can be a gradient index lens, and the alignment surfaces can have a spatially uniform pre-tilt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.