Near-to-eye display device
US11579483B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 25, 2021 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Aug 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1335
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A near-to-eye display device, includes: a display screen configured to display different images in a first time division mode, a polarization converter at a light-emitting side of the display screen and configured to convert emitted light of the different images displayed by the display screen into first circularly polarized light rays and second circularly polarized light rays in a second time division mode. Here the first circularly polarized light rays and the second circularly polarized light rays are opposite in rotation direction. The device further includes a polarization lens at a side facing away from the display screen of the polarization converter, and a focusing lens at a side facing away from the display screen of the polarization converter. The polarization lens and the focusing lens are configured to focus the first circularly polarized light rays and the second circularly polarized light rays at positions of different focal lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.