Virtual image display apparatus
US9323059B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Dec 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0127
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A virtual image display apparatus configured to be in front of at least one eye of a user includes an image display unit, a first beam splitting unit, and a reflection-refraction unit. The image display unit provides an image beam. The first beam splitting unit disposed on transmission paths of the image beam and an object beam causes at least one portion of the object beam to propagate to the eye and causes at least one portion of the image beam to propagate to the reflection-refraction unit. The reflection-refraction unit includes a lens portion and a reflecting portion on a first curved surface of the lens portion. At least part of the image beam travels through the lens portion, is reflected by the reflecting portion, travels trough the lens portion again, and is propagated to the eye by the first beam splitting unit in sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.