Patent · US Active

Feedforward control of semiconductor light sources

US8378583B2 · kind B2 · utility

58Cited by

8References

7Claims

0Family size

Assignee

OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

Ralf Hying · Munich, DE
Peter Niedermeier · Burghausen, DE

Key dates

Filing date	Jun 22, 2007
Grant date	Feb 19, 2013
Priority date	—
Expiry date	May 15, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A control method for a semiconductor light source may include operating the semiconductor light source with short, powerful pulses by an operating device; storing the characteristic light decrease of the semiconductor light source depending on the power introduced into the semiconductor light source in the operating device; and altering power introduced during the pulse in such a way that the emitted quantity of light of the semiconductor light source substantially remains constant over the pulse duration.

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