Augmented reality apparatus, and optical system and semi-reflector therefor
US11874466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2020 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Jul 26, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0185
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosure relates to an augmented apparatus, and an optical system and a semi-reflector for the same. The optical system comprises: an image projection source; a beam splitter, the beam splitter having a beam splitting side adjacent to the image projection source and a transmission side facing away from the image projection source; and a semi-reflector, the semi-reflector being arrange adjacent to the beam splitting side and being downstream of the beam splitting side in an optical path along which light emitted from the image projection source is reflected by the beam splitting side, the beam splitter being arranged such that the light emitted from the image projection source is able to be at least partially reflected by the beam splitting side towards the semi-reflector, wherein the semi-reflector comprises a substrate and a semi-reflective film on a distal surface of the substrate. According the present application's technical means, the design freedom of the whole optical system can be increased and the field of view can be enlarged, which facilitates the final imaging result in the human eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.