Electron gun with cylindrical electrodes arrangement
US5731657A · kind A · utility
4Cited by
20References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Oct 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/503
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A color cathode ray tube comprising in-line electron gun producing three electron beams, said electron gun having main lens comprising two cylindrical electrodes arranged in a spaced relationship in a direction of an axis of said tube, said two cylindrical electrodes being given different voltages, wherein the following inequalities are satisfied, PA1 2S+13.66.ltoreq.T.ltoreq.28.1 PA1 4.1.ltoreq.S, S being a beam spacing in mm between central axes of said three adjacent electron beams at said main lens, and T being an outside diameter in mm of a neck portion of a vacuum envelope housing said in-line electron gun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.