Patent · US Active

Technique for adjusting the brightness of LED lamps

US9839086B2 · kind B2 · utility

1Cited by

5References

16Claims

0Family size

Assignee

HEINE Optotechnik GmbH & Co. KG · DE

Inventors

Norbert Merkt · Herrsching am Ammersee, DE
Benjamin Komm · Munich, DE
Manfred Wittlinger · Schwabmünchen, DE
Oliver Heine · Herrsching am Ammersee, DE
Bernd Kabbeck · Landsberg am Lech, DE

Key dates

Filing date	May 25, 2016
Grant date	Dec 5, 2017
Priority date	—
Expiry date	May 25, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/14
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method is described for adjusting the brightness of at least one LED according to a changing supply voltage provided to the at least one LED includes acquiring a parameter which indicates the changing supply voltage; and providing, on the basis of the acquired parameter, a control voltage of the at least one LED for adjusting an LED current such that the at least one LED has a predefined relative brightness change over the predefined voltage range. A control unit and an LED lamp which implement the method described here are also discloses. Furthermore, an LED lighting apparatus and a medical diagnostic device having the LED lamp disclosed here are described.

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