Augmented reality apparatus and optical system therefor
US11042040B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2020 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Jul 15, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0185
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosure relates to an augmented reality apparatus and an optical system therefor. The optical system comprises an image source; a beam splitter component having a beam splitting side adjacent to the image source and a transmission side facing away from the image source; a wave plate adjacent to the beam splitting side, the beam splitter component being arranged in such a way that light emitted from the image source is able to be non-perpendicularly incident on the beam splitting side and at least partially reflected toward the wave plate; and a semi-reflector located downstream of the wave plate in an optical path of the reflected light, wherein the beam splitter component is configured in such a way that when the light emitted from the image source is incident on the beam splitting side, a polarized light component, whose polarization is in a first direction, passes through the beam splitter component to be transmitted through the transmission side, and a polarized light component, whose polarization is in a second direction perpendicular to the first direction, is reflected by the beam splitting side toward the wave plate, and wherein the beam splitter component is also co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.