Image intensifier with two-layer input window
US4331898A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Jan 18, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2231/50036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an image intensifier comprising an evacuated envelope which comprises a cylindrical vessel, an input window member airtightly sealed to one end of the vessel, and an output container formed at the other end of the vessel, at least said one end portion of the cylindrical vessel is formed of metal, the input window member has a multilayer structure including an outer thin plate formed of metal weldable to the metal which constitutes at least said one end portion of the cylindrical vessel and an inner thin plate formed of aluminum or aluminum alloy which is thicker than the outer thin plate, the peripheral portion of the inner thin plate is pressure-bonded to an inner portion of a flange at the one end portion of the cylindrical vessel, and the peripheral portion of the outer thin plate extends beyond the peripheral portion of the inner thin plate and is fused with an outer portion of the flange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.