Fluorescent lamp containing aluminate phosphor
US4638214A · kind A · utility
52Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1986 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Apr 21, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7774
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A class of non-stoichiometric class of cerium and terbium co-activated magnesium aluminate phosphors is disclosed which are particularly useful in low pressure type fluorescent lamps. Said phosphor materials can be further combined with other phosphors to produce white color illumination in said type lamps. A general method for preparation of said phosphor materials is disclosed wherein the emission characteristics can be regulated to advantage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.