US Patent No. 9,359,260
LUMINESCENT CERAMIC FOR A LIGHT EMITTING DEVICE
| Patent No. | 9,359,260 |
|---|---|
| Issue Date | June 07, 2016 |
| Title | Luminescent Ceramic For A Light Emitting Device |
| Inventorship | Gerd O. Mueller, San Jose, CA (US) Regina B. Mueller-Mach, San Jose, CA (US) Michael R. Krames, Los Altos, CA (US) Peter J. Schmidt, Aachen (DE) Hans-Helmut Bechtel, Aachen (DE) Joerg Meyer, Aachen (DE) Jan de Graaf, Eindhoven (NL) Theo Arnold Kop, Eindhoven (NL) |
| Assignee | Lumileds LLC, San Jose, CA (US) |
Claim of US Patent No. 9,359,260
1. A device comprising:
a light emitting structure comprising a light emitting layer;
a first ceramic phosphor disposed in a path of light emitted by the light emitting layer;
a second ceramic phosphor disposed in a path of light emitted by the light emitting layer; and
a heat extraction structure;
wherein:
one of the first ceramic phosphor and the second ceramic phosphor is directly connected to the heat extraction structure;
a surface of the first ceramic phosphor is roughened;
one of the first ceramic phosphor and the second ceramic phosphor is a transparent or translucent ceramic slab formed by sintering;
the light emitting structure is disposed between a mount and the first ceramic phosphor and directly connected to the mount;
and
the heat extraction structure is disposed between the mount and the first ceramic phosphor and directly connected to the mount.
a light emitting structure comprising a light emitting layer;
a first ceramic phosphor disposed in a path of light emitted by the light emitting layer;
a second ceramic phosphor disposed in a path of light emitted by the light emitting layer; and
a heat extraction structure;
wherein:
one of the first ceramic phosphor and the second ceramic phosphor is directly connected to the heat extraction structure;
a surface of the first ceramic phosphor is roughened;
one of the first ceramic phosphor and the second ceramic phosphor is a transparent or translucent ceramic slab formed by sintering;
the light emitting structure is disposed between a mount and the first ceramic phosphor and directly connected to the mount;
and
the heat extraction structure is disposed between the mount and the first ceramic phosphor and directly connected to the mount.