Neon discharge lamp for generating amber light
US6130511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1998 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Sep 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A neon gas discharge lamp is provided which produces an acceptable amber color emission for automotive applications. The red emission from the neon discharge when the lamp is operated in a pulsed mode is combined with a green emission from a substituted Y.sub.3 Al.sub.15 O.sub.12 :Ce phosphor coated on the interior surface of the lamp. The resulting amber emission meets both SAE and ECE amber color requirements. In particular, phosphor has the general formula: EQU Y.sub.3-(a+b+c) Ce.sub.a M.sub.b V.sub.c Al.sub.5 O.sub.12 PA1 where M is Gd or La; PA1 V are lattice vacanies; PA1 0.01.ltoreq.a.ltoreq.0.08; PA1 0.60.ltoreq.b.ltoreq.2.4; and PA1 0.ltoreq.c.ltoreq.0.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.