Microstructured multibeam element backlighting
US11204457B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 19, 2019 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Oct 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/33
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multiview backlight and a multiview display employ a microstructured 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 microstructured multibeam element adjacent and external to a surface of the light guide. The microstructured multibeam element has an input aperture configured to receive a portion of guided light from the light guide and an output aperture configured to emit the plurality of directional light beams. The microstructured multibeam element comprises a microstructure having an interior surface configured to reflect the received guided light portion to provide the plurality of directional light beams at the output aperture. The multiview display includes the multiview backlight and an array of multiview pixels configured to provide different views of the multiview display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.