Process for aligning and centering an assembly of electron-guns on a color television tube and device for carrying out the process
US4604071A · kind A · utility
5Cited by
4References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Jun 19, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a process and a device for aligning and centering an assembly of electron-guns on a color television tube during the manufacturing process. To do this, the image of the markings of the assembly of electron-guns is formed on analyzers, each comprising a charge-coupled photosensitive strip. The alignment is observed when the comparison signal is lower than a predetermined value. Instead of markings, the image of the sections of the assembly of guns can be used as the section comprising the grid G4 in the cup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.