Eyelens waveguide
US11054647B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2018 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Nov 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Various waveguides and image display systems are disclosed herein. In an example, an image display system can include an optical engine configured to generate an image and a waveguide. The waveguide can have a light in-coupling region formed along a peripheral edge of the waveguide, the light in-coupling region including a first surface with a first set of diffraction gratings, and a light exit region formed along a top surface of the waveguide, the light exit region including a second set of diffraction gratings. The first set of diffraction gratings can be configured to diffract light towards the second set of diffraction gratings, and the second set of diffraction gratings can be configured to diffract light towards the user's eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.