EP 1819799 A1 20070822 - ILLUMINATION SYSTEM COMPRISING A RADIATION SOURCE AND A FLUORESCENT MATERIAL
Title (en)
ILLUMINATION SYSTEM COMPRISING A RADIATION SOURCE AND A FLUORESCENT MATERIAL
Title (de)
BELEUCHTUNGSSYSTEM MIT STRAHLUNGSQUELLE UND FLUORESZIERENDEM MATERIAL
Title (fr)
SYSTEME D'ECLAIRAGE COMPRENANT UNE SOURCE DE RAYONNEMENTS ET UNE MATIERE FLUORESCENTE
Publication
Application
Priority
- IB 2005053880 W 20051123
- EP 04106286 A 20041203
- EP 05819206 A 20051123
Abstract (en)
[origin: WO2006059260A1] An illumination system, comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a part of light emitted by the radiation source and emitting light of wavelength different from that of the absorbed light; wherein said at least one phosphor is a yellow red-emitting ytterbium(II)-activated oxonitridosilicate of general formula (Sr<SUB>1-x-y-z</SUB>Ca<SUB>x</SUB>Ba<SUB>y</SUB>)<SUB>a</SUB>Si<SUB>b</SUB>Al<SUB>c</SUB>N<SUB>d</SUB>O<SUB>e</SUB>:Yb<SUB>z</SUB>, wherein 0 = x = l; 0 = y = l; 0.001 < z < 0.2; 0 < a < 2; 0 < b = 2; 0 < c = 2; 0 < d < 7; 0 < e < 2 can provide light sources having high luminosity and color-rendering index, especially in conjunction with a light emitting diode as a radiation source. The red to yellow -emitting ytterbium(II)-activated oxonitridosilicate of general formula (Sr<SUB>1-x-y-z</SUB>Ca<SUB>x</SUB>Ba<SUB>y</SUB>)<SUB>a</SUB>Si<SUB>b</SUB>Al<SUB>c</SUB>N<SUB>d</SUB>O<SUB>e</SUB>:Yb<SUB>z</SUB>, wherein 0 = x = l; 0 = y = l; 0.001 < z < 0.2; 0 < a = 2; 0 < b = 2; 0 < c < 2; 0 < d < 7; 0 < e < 2 is efficiently excitable by primary radiation in the near UV-to-blue range of the electromagnetic spectrum.
IPC 8 full level
C09K 11/79 (2006.01); H01L 33/30 (2010.01); H01L 33/44 (2010.01); H01L 33/48 (2010.01); H01L 33/50 (2010.01); H01L 33/56 (2010.01); H01L 33/60 (2010.01); H01L 33/62 (2010.01); H05B 33/14 (2006.01)
CPC (source: EP US)
C09K 11/0883 (2013.01 - EP); C09K 11/77067 (2021.01 - EP US); H05B 33/14 (2013.01 - EP)
Citation (search report)
See references of WO 2006059260A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006059260 A1 20060608; CN 101072843 A 20071114; EP 1819799 A1 20070822; JP 2008521994 A 20080626; TW 200628590 A 20060816
DOCDB simple family (application)
IB 2005053880 W 20051123; CN 200580041647 A 20051123; EP 05819206 A 20051123; JP 2007543948 A 20051123; TW 94142188 A 20051130