EP 1575338 A1 20050914 - A lighting device with changeable color temperature and a method for varying the emission temperature of the light
Title (en)
A lighting device with changeable color temperature and a method for varying the emission temperature of the light
Title (de)
Beleuchtungsvorrichtung mit regelbarer Farbtemperatur und Verfahren zur Änderung der Abgabetemperatur des Lichtes
Title (fr)
Dispositif d'éclairage à temperature de couleur réglable et procédé pour modifier l'émission de température de la lumière
Publication
Application
Priority
EP 04425158 A 20040309
Abstract (en)
A device and a method for varying the color temperature of the light emitted by a lighting device are described. The independent control of the emission power of a plurality of light sources each one having different color temperatures from the others is provided. <IMAGE>
IPC 1-7
IPC 8 full level
H05B 44/00 (2022.01)
CPC (source: EP US)
H05B 45/20 (2020.01 - EP US)
Citation (search report)
- [XY] US 2002048177 A1 20020425 - RAHM PETER R [US], et al
- [XY] US 2003107887 A1 20030612 - EBERL HEINRICH ALEXANDER [DE]
- [Y] DE 3917101 A1 19901129 - RIENECKER WOLFGANG PROF DR ING [DE]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04425158 A 20040309