Polarization-independent switchable lens system
US10274805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Jun 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Energized lens systems and methods of fabricating an energized lens system which can be switched from one polarization-independent focal length to another polarization-independent focal length. The energized lens system can include a 90 degree twisted nematic liquid crystal layer with curved boundaries, and with transparent conductive electrodes which allow the application of an electric field to switch the focal length of the twisted nematic liquid crystal layer. The focal length of the energized lens system can be independent of the polarization of light in both of its two states, and only one liquid crystal layer of the energized lens system needs to be switched in order for the focal length of the energized lens system to be switched.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.