Electrically tunable phase modulation element
US10816858B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 29, 2018 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Jan 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/294
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrically tunable optical phase modulation element includes a first substrate, a second substrate, a liquid crystal layer, a transparent layer, a first compensation layer. The second substrate is opposite to the first substrate. The liquid crystal layer is between the first substrate and the second substrate. The transparent layer is between the first substrate and the liquid crystal layer. The transparent layer has a first portion and a second portion. The first compensation layer is in between the first portion and the second portion of the transparent layer. The first compensation layer has a flat surface adjacent the liquid crystal layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.