Glow discharge lamp having zero anode voltage drop
US5027030A · kind A · utility
5Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1989 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Nov 30, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A glow discharge lamp includes a light-transmitting envelope containing a rare gas fill material. The envelope contains a spherical-shaped region having a predetermined internal radius R. A phosphor coating is disposed on the inner surface of the envelope. Anode and cathode electrodes are disposed within the envelope and spaced a predetermined distance d thereapart. The voltage drop of the cathode electrode is less than the excitation potential of the rare gas fill material. The anode electrode has a predetermined effective surface area S.sub.a such that the relationship Rd/S.sub.a is within the range of from about 5.0 to 11.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.