Helmet mounted display systems
US5543968A · kind A · utility
49Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0159
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A helmet mounted display system comprising: a transparent visor; and an optical system which directs rays of light from a display produced by a display source onto a spherical region of the visor to provide by reflection at the visor, at a helmet wearer's eye position, a collimated virtual image of the display on a line of sight of a wearer of the helmet through the visor; the region of the visor being of a shape which is rotationally symmetric about a first axis and the optical system being mounted for rotation about the first axis, thereby to allow rotation of the eye position about the axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.