Color pickup tube face plate with opaque shading stripes overlapping adjacent filters
US3997810A · kind A · utility
7Cited by
1References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 4, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Dec 4, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/45
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A color pick-up tube face plate with shading films is disclosed. These shading films are stripe-shaded opaque films, and are formed between the transparent glass plate and the stripe-shaped color filters. As the boundary portions of all the filters are positioned on these shading films, the light incidented around the boundary portions is hindered by the shading films. For this reason, light reflection or scattering around the boundary portions is effectively eliminated, and a pure high quality color picture is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.