Polarization independent optical shutter using cholesteric liquid crystals and three-dimensional image acquisition apparatus employing the same
US9976847B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Mar 3, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Example embodiments relate to an optical shutter including a first polarization filter having a nanopore-cholesteric liquid crystal layer, which includes a cholesteric liquid crystal matrix and a plurality of liquid crystal nanopores embedded in the cholesteric liquid crystal matrix, and having a reflective wavelength band that varies according to electrical control, and a second polarization filter that is parallel to the first polarization filter, includes a nanopore-cholesteric liquid crystal layer, which includes a cholesteric liquid crystal matrix and a plurality of liquid crystal nanopores embedded in the cholesteric liquid crystal matrix, and has a reflective wavelength band that varies according to electrical control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.