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Method for controlling a current of a light-emitting diode

專利號
US11497098B2
公開日期
2022-11-08
申請人
OSRAM OLED GMBH（DE Regensburg）
發(fā)明人
Benjamin Hoeflinger; Matthias Goldbach
IPC分類
H05B45/58; H05B45/14; H05B47/16; H05B47/14; H05B45/325; H05B47/28; H05B45/10; H05B45/28; H05B45/18
技術(shù)領(lǐng)域
emitting,diode,luminous,light,flux,current,tj,aging,diodes,in
地域： Regensburg

摘要

The invention relates to a method for controlling a current to a light-emitting diode in order for it to emit a desired light flux, wherein the current is determined depending on a time period during which the light-emitting diode is supplied with current, in order to generate the desired light flux for said light-emitting diode.

說明書

? ( 25 ° ? ? C . ) τ CV + 25 ° ? ? C .

Step 2

Ascertainment of the luminous flux degradation at the present point in time t1 according to equation 10.
Lt1=Lt1(VF,TS,ILED,Tj(VF))

Step 3

Determination of the time passed under reference condition according to equation 2.

t 25 ? ° ? C = - 1 2 ? ?

權(quán)利要求

1
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