Discharge lamp lighting device
US5170099A · kind A · utility
22Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Mar 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A discharge lamp lighting device includes a DC power supplying means which supplies as superposed on a high frequency power fed to a low-tension, mercury-arc discharge lamp a DC power of a level capable of maintaining a discharge upon low light flux lighting, the lamp being thereby made stably lighted to an extremely low level of the flux of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.