Angular subpixel rendering multiview display using shifted multibeam diffraction gratings
US10802443B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 2018 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Dec 30, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2223/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Multiview displays include a backlight and a screen used to form a plurality of multiview pixels. Each multiview pixel includes a plurality of sets of light valves. The backlight includes a light source optically coupled to a plate light guide configured with a plurality of multibeam diffraction gratings. Each multibeam diffraction grating corresponds to a set of light valves and is spatially offset with respect to a center of the set of light valves toward a center of the multiview pixel. The plurality of multibeam diffraction gratings is also configured to diffractively couple out light beams from the plate light guide with different diffraction angles and angular offsets such that at least a portion of the coupled-out light beams interleave and propagate in different view directions of the multiview display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.