Electric gas discharge lamp having two superposed luminescent layers
US4069441A · kind A · utility
11Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Sep 8, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent lamp requiring a smaller amount of luminescent material than is normally required. The luminescent layer is composed of component layers, the component layers which do not face the discharge contain a mixture of the luminescent material and a white pigment which reflects ultraviolet radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.