Compact helmet mounted display
US4761056A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Mar 27, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0143
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display apparatus for use with headgear, includes in combination visor means adapted to attach to the headgear and having a visor viewing area segment positioned in the line-of-sight of a wearer of the headgear. Optical display generating means are adapted to be attached to the headgear. Parabolic mirror means are interposed in the optical path from the optical display generating means to the visor viewing area segment. Fold mirror means, including at least one fold mirror positioned to receive the image from the parabolic mirror means for directing the image to the visor viewing area segment, is provided, whereby the size and curvature of the visor can be minimized without affecting transmission of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.