Electron bun optical adjustment apparatus and method
US4148117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1977 |
| Grant date | Apr 10, 1979 |
| Priority date | — |
| Expiry date | Feb 4, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical adjusting method and apparatus for aligning the electron gun system in color television picture tubes during the sealing process. The electron gun system and the picture tube prior to assembly are separated from each other with the electron gun system being supported for rotation about its longitudinal axis and having optically effective position marks which may comprise slots or columns thereon for aligning the electron gun system in a predetermined alignment. A light beam traverses the position marks which, in the electron gun system, when properly rotated, coincides with the axis between a light source and a light intensity measuring means such that the electron gun system is aligned in its predetermined alignment when a maximum light intensity with respect to a predetermined threshold is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.