Display system
US5459612A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1993 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Aug 4, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0138
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A helmet mounted display system comprising an eyepiece (3) through which a wearer of the helmet directly views a forward scene (13). The eyepiece also serves to combine an intensified image of the forward scene with the wearer's direct view of the scene. The intensified image is produced by an optical arrangement including an image intensifier (6) from which light is passed to the eyepiece via a prism (2). The prism serves to compensate for orientation of the intensified image in other parts of the optical arrangement so that the intensified image is in the same orientation as the wearer's direct view of the forward scene. In addition the prism allows the various components in the system light path to conform to the profile of the helmet thereby making the helmet more comfortable for a wearer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.