Illumination system comprising a radiation source and a fluorescent material
First Claim
1. Illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a portion of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light;
- wherein said at least one phosphor is a garnet of general formula(Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12;
CeaPrb, wherein 0<
x<
1, 0<
y<
1, 0<
z≦
0.1, 0<
a≦
0.2 and 0<
b≦
0.1; and
wherein values of x and y are selected such that 1-x-y-a-b>
0.
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Accused Products
Abstract
The invention relates to an illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a portion of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light; wherein said at least one phosphor is a green-emitting cerium-activated lutetium-aluminum-garnet of general formula (Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12:CeaPrb wherein 0<x<1, 0<y<1, 0<z£0.1, 0<a£0.2 and 0<b£0.1. The invention also relates to with a green-emitting cerium-activated lutetium-aluminum-garnet of general formula (Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12:CeaPrb wherein 0<x<1, 0<y<1, 0<z£0.1, 0<a£0.2 and 0<b£0.1.
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Citations
11 Claims
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1. Illumination system comprising a radiation source and a fluorescent material comprising at least one phosphor capable of absorbing a portion of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light;
- wherein said at least one phosphor is a garnet of general formula
(Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12;
CeaPrb, wherein 0<
x<
1, 0<
y<
1, 0<
z≦
0.1, 0<
a≦
0.2 and 0<
b≦
0.1; and
wherein values of x and y are selected such that 1-x-y-a-b>
0. - View Dependent Claims (2, 3, 4, 5, 6, 7, 10)
- wherein said at least one phosphor is a garnet of general formula
-
8. Phosphor capable of absorbing a portion of the light emitted by a radiation source and emitting light of a wavelength different from that of the absorbed light;
- wherein said phosphor is a garnet of general formula
(Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12;
CeaPrb wherein 0<
x<
1, 0<
y<
1, 0<
z≦
1, 0<
a≦
0.2 and 0<
b≦
1; and
wherein values of x and y are selected such that 1-x-y-a-b<
0. - View Dependent Claims (9, 11)
- wherein said phosphor is a garnet of general formula
Specification