Patent · US Expired

Stabilizing the operation of gas discharged lamps

US6525491B2 · kind B2 · utility

4Cited by

10References

9Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Andreas Huber · Holzgerlingen, DE
Josef Osterried · Ottobrunn, DE
Alwin Veser · Hallbergmoos, DE
Wolfram Graser · Munich, DE

Key dates

Filing date	Apr 10, 2001
Grant date	Feb 25, 2003
Priority date	—
Expiry date	Apr 15, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/38
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Flickering phenomena in gas discharge lamps are undesired in projection technology, in particular. According to the invention, the problem is solved by setting a lamp operation which does not form a focal spot. A specific control structure which includes a cascade structure and feedforward control is proposed for implementing this operation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.