Light guide and near-eye display apparatus
US12379599B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2023 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Nov 14, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure relates to light guides and near-eye display apparatuses. One example light guide includes a light guide plate and a two-dimensional grating that is disposed on a surface of the light guide plate. The two-dimensional grating includes a plurality of grating units arranged in a planar shape, the grating units are arranged at an interval of a first distance along a first direction and at an interval of a second distance along a second direction, and the first direction intersects with the second direction. The two-dimensional grating includes a light egress area and a light ingress area that are arranged along a third direction, and a fourth direction is perpendicular to the third direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.