Image intensifier tube having a solid state electron amplifier
US5349177A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Feb 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An image intensifier tube that utilizes a photoresponsive layer for producing electrons in response to received radiation, a solid state electron amplifier for multiplying the electrons produced by the photoresponsive layer, a cold cathode for emitting electrons into vacuum, and a phosphor screen for converting impinging electrons into a visible image. The solid state electron amplifier is formed as a semiconductive layer interposed in between a photoresponse layer and a negative electron affinity layer on the photocathode. The solid state electron amplifier receives the electrons produced by the photoresponsive layer, multiplies the electrons and directs the electrons to the negative electron affinity layer. The negative electron affinity layer then directs the electrons through a vacuum to the phosphor screen producing a viewed image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.