Multi-focal catadioptric head mounted display with LC switch
US11002970B2 · kind B2 · utility
13Cited by
1References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system includes an electronic display for emitting light toward an eye-ward side of the system. A beam splitter receives emitted light from the display. The beam splitter includes a polarization beam splitting (PBS) film and a mirror coating to generate two orthogonal polarization states with different optical paths thereby creating a first focal plane and a second focal plane at the eye-ward side of the system. At least one liquid crystal switch is positioned to receive light from the display in a light path between the display and the eye-ward side of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.