Microprism multibeam element backlight and multiview display using same
US10969531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2019 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Dec 15, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/351
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multiview backlight and a multiview display employ a microprism multibeam element to emit a plurality of directional light beams having principal angular directions corresponding to view directions of the multiview display. The multiview backlight includes a light guide and the microprism multibeam element extending from a surface of the light guide. The microprism multibeam element has an input aperture configured to receive a portion of guided light and an output aperture configured to emit the plurality of directional light beams. The microprism multibeam element includes a microprism having an inclined sidewall configured to reflect the received guided light portion and provide the plurality of directional light beams. The multiview display includes the multiview backlight and an array of multiview pixels configured to provide different views of the multiview display from the plurality of directional light beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.