Head mounted display
US8842368B2 · kind B2 · utility
104Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2010 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Apr 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A helmet or head-mounted apparatus has a visor or other curved optical element in front of at least one eye of a wearer, which element also is used as a waveguide. Image-bearing light is injected into the waveguide via an input diffractive element, and propagates through the visor to an output diffractive element which releases the light. The optical powers of the curved waveguide and the input and output diffractive elements are selected so that the released light is delivered as an image to the users eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.