Light source using a yellow-to-red-emitting phosphor
First Claim
Patent Images
1. Light source using a yellow-to-red-emitting phosphor, wherein the phosphor converts at least partially radiation of a primary light source, characterised in that said phosphor has a host lattice of the nitridosilicate type MxSiyNz:
- Eu, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba, Zn and wherein z=⅔
x+{fraction (4/3)}y.
2 Assignments
0 Petitions
Accused Products
Abstract
A light source uses a yellow to red emitting phosphor with a host lattice of the nitridosilicate type MxSiyNz:Eu, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba and wherein z=⅔x+{fraction (4/3)}y.
46 Citations
10 Claims
-
1. Light source using a yellow-to-red-emitting phosphor, wherein the phosphor converts at least partially radiation of a primary light source, characterised in that said phosphor has a host lattice of the nitridosilicate type MxSiyNz:
- Eu, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba, Zn and wherein z=⅔
x+{fraction (4/3)}y. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- Eu, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba, Zn and wherein z=⅔
- 9. Light source of claim B wherein the primary radiation is blue, preferably between 420 and 470 nm (peak wavelength), and combines with the secondary radiation and optionally with further secondary radiation of at least one further phosphor in order to obtain white light.
Specification