Method and circuit arrangement for operating a high-pressure gas discharge lamp
US7285920B2 · kind B2 · utility
8Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2003 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | May 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2928
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a circuit arrangement for the operation of a high-pressure gas discharge lamp (HID [high intensity discharge] lamp or UHP [ultra high performance] lamp) is described, which lamp is particularly suitable for illuminating projection displays with sequential color rendering (for example LCOS or SCR-DMD systems) with a pulsatory lamp current. Artefacts in the color rendering are avoided through the generation of at least one compensation pulse of a given amplitude and a given timing and through superimposition thereof on the lamp current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.