HEATING DEVICE AND CONTROL METHOD OF LED

A heating device using an LED is provided. The heating device includes a heater for heating a target with LED light, an LED controller for controlling power supplied to the LED such that a temperature of the target is adjusted with the power being in the range where a current thereof does not exceed...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Kasai, Shigeru, Morifuji, Yoshiyuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SEMICONDUCTOR DEVICES TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A heating device using an LED is provided. The heating device includes a heater for heating a target with LED light, an LED controller for controlling power supplied to the LED such that a temperature of the target is adjusted with the power being in the range where a current thereof does not exceed an allowable current Imax, a correction unit for correcting Imax, and a voltage measurement unit for measuring a voltage of the LED. The correction unit estimates a junction temperature Tjm of the LED when Imax is supplied based on a measurement result by the voltage measurement unit when an estimation current Ie is supplied after Imax is supplied to the LED for correction. When Tjm of the LED when Imax is supplied exceeds Tmax corresponding to Imax, the correction unit corrects Imax.