Display of indicator lights in night vision devices using fiber optic screen
US7282690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Dec 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A night vision device includes an image intensifier tube and a fiber optic screen disposed in operative relationship to each other. The fiber optic screen includes a longitudinal bundle of multiple optical fibers, where the bundle has an outer surface. A groove is formed in the fiber optic screen and extends transversely to the longitudinal bundle. An indicator is positioned adjacent to the outer surface of the bundle and is proximate to the groove, where the groove is configured to redirect light emitted from the indicator for viewing by a user. The groove may be formed circumferentially around a portion of the outer surface of the longitudinal bundle. The groove includes a surface of end portions of multiple cut optical fibers, and the groove is configured to redirect the light emitted from the indicator toward the user by way of the end portions of the multiple cut optical fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.