Head mounted device
US7307791B2 · kind B2 · utility
25Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2005 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jul 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A head-mounted display (HMD) comprises a frame for hanging on a user's head, and a display device affixed to the frame. The display device comprises alight source, a driving circuit for generating data signals, a polarization beam splitter (PBS), for passing the light emitted from the light source, a liquid crystal on silicon panel (LCOS panel) for reflecting the light from the PBS based on the data signal generated by the driving circuit, and a lens group including a biconvex glass spherical prism and an aspherical plastic prism. The lens group is used for focusing the reflected light from the LCOS panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.