See-through type display apparatus
US11243427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2019 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Jan 10, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13355
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display apparatus includes: a display device configured to output a first image; an optical coupler configured to: combine the first image received through a first path from the display device with a second image received through a second path that is different from the first path, output, through an exit surface of the optical coupler, a first light corresponding to the first image in a first polarization and a second light corresponding to the second image in a second polarization; and a polarization selection optical system arranged on the exit surface of the optical coupler and configured to have different refractive power with respect to the first light of the first polarization and the second light of the second polarization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.