Compact wearable display
US8639072B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 19, 2011 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Oct 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/0439
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a wearable display comprising a light source emitting light of a first wavelength; a first SBG device having a front side and a rear side; first and second transparent plates sandwiching said SBG device; independently switchable transparent electrode elements applied to the opposing surfaces of said transparent plates, a means for spatio-temporally modulating light from the light source to provide image light and a means for coupling the image light into the light guide formed by the two transparent plates and the SBG device. The SBG device comprises a multiplicity of selectively switchable grating regions. The SBG device diffracts image into the pupil of an eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.