Liquid crystal structure for controlling brightness uniformity in a waveguide display
US10534209B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2017 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0194
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A near-eye display (NED) includes a source assembly that emits image light, a waveguide-based display assembly, and a controller coupled to the waveguide-based display assembly, and an optical assembly. The waveguide-based display assembly includes a liquid crystal (LC) waveguide, an input area, and an output area. The LC waveguide comprising a first glass layer, a second glass layer, and a LC layer between the first and second glass layers. The LC waveguide propagates the image light in-coupled via the input area in accordance with emission instructions toward the output area that out-couples the image light to a user's eye. The controller generates the emission instructions and provides the emission instructions to the LC waveguide for generating the image light of substantially uniform brightness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.