In-line electron guns having consecutive grids with aligned vertical, substantially elliptical apertures
US3952224A · kind A · utility
22Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Oct 4, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/503
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the tube gun, the apertures of the two grids closest to the cathodes are vertically elongated or, preferably, vertically elliptically shaped to provide at least partial compensation for beam distortion occuring in a deflection zone of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.