Geometric phase optical element and three-dimensional display apparatus including the same
US11880049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2023 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Mar 31, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133538
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A geometric phase optical element and a three-dimensional display apparatus including the same are provided. The geometric phase optical element includes: a liquid crystal layer; a first electrode on a surface of the liquid crystal layer; and a second electrode on another surface of the liquid crystal layer, wherein, when no voltage is applied to the first and second electrodes, the liquid crystal layer is configured such that a phase difference according to an arrangement of the liquid crystal is π and light transmitted through the liquid crystal layer is diffracted by a first deflection angle, and when a first voltage that causes the phase difference according to the arrangement of the liquid crystal to become π/2 is applied to the first and second electrodes, the liquid crystal layer is configured such that the light transmitted through the liquid crystal layer is diffracted by a second deflection angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.