Near-to-eye display device and Augmented Reality apparatus
US12066626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2020 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Aug 22, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a near-to-eye display device, including: an optical waveguide; at least one in-coupling grating on a surface of the optical waveguide and configured to couple received parallel light into the optical waveguide for propagating by total internal reflection; a light out-coupling structure on the surface of the optical waveguide and configured to extract the light propagating by total internal reflection in the optical waveguide to become an outgoing light from the optical waveguide; and an optical lens configured to receive the outgoing light, remain an outgoing direction of the outgoing light with a first polarization direction, and converge or diverge the outgoing light with a second polarization direction. There is further provided an augmented reality apparatus including the near-to-eye display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.