Light weight/small image intensifier tube
US5994824A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Jul 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved image intensifier tube having electrically operative components that include a photocathode having a photoemissive layer, a microchannel plate having a conductive input surface and a conductive output surface, and a vacuum housing for retaining the photocathode, the microchannel plate and a fiber optic inverter in a predetermined arrangement within an evacuated environment, the fiber optic inverter having a phosphor screen for receiving the electrons emitted by the cathode and converting the electrons into a visual image, the improvement therewith comprising a ring assembly disposed in the housing comprising first and second rings, the first ring being a metallized snap ring conductively contacting the input surface of the microchannel plate for providing electrical contact to and retaining the plate within the housing, the second ring being a metallized ceramic ring having a first chamfered metallized surface in electrical contact with the metallized snap ring and a second metallized surface operable to provide an electrical contact external to the housing; and the fiber optic inverter having a unitarily formed and circumferentially extending flange portion extending t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.