Head-up display independent test site
US4647967A · kind A · utility
127Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1986 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Jan 28, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0169
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An independent test sight is described for a pilot's head-up display (HUD). In one embodiment, the independent test site comprises a collimator assembly and an aligned periscope assembly. The collimator assembly comprises a source of light, a reticle, and a lens for projecting the image of the reticle. The periscope assembly comprises a rhomboid prism housed within the chassis of the HUD in such a manner that it can be pivoted from a stowed position to an erect position where it projects a reticle pattern in the field of view of the HUD combiner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.