Image intensifier for night vision device
US10886095B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2017 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | May 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2231/5016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An image intensifier is provided in which a thin film (090) is arranged between an output surface of the electron multiplier (040) and the phosphorous screen. The thin film is a semi-conductor or insulator with a crystalline structure comprising a band gap equal or larger than 1 eV, wherein the crystalline structure has a carrier diffusion length equal or larger than 50% of the thickness of the thin film. In addition, the thin film has an anode directed surface which has a negative electron affinity. By way of provisioning a thin film of the above type in the image intensifier, an improvement in mean transfer function of the overall image intensifier is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.