Multizone mixing cup
A zoned optical cup which mixes multiple channels of light to form a blended output, the device having discreet zones or channels including a plurality of reflective cavities each having a domed light converting appliance (DLCA) covering a cluster of LEDs providing a channel of light which is reflected upward by the cavities and mixed by angles walls and structures above the open top of the cavities in the common body of the cup.
1. A zoned light mixing method, the method comprising:
placing a plurality of strings of LEDs in a unitary body with multiple reflective cavities configured to mix the output from the LEDs, each string of LEDs associated with each of the multiple reflective cavities;
passing light from a first LED string through a first luminophoric medium comprised of one or more luminescent materials and matrix in a first ratio for a first combined light in a blue color range on 1931 CIE diagram;
passing light from a second LED string through a second luminophoric medium comprised of one or more luminescent materials and matrix in a second ratio for a second combined light in a red color range on 1931 CIE diagram;
passing light from a third LED string through a third luminophoric medium comprised of one or more luminescent materials and matrix in a third ratio for a third combined light in a yellow/green color range on 1931 CIE diagram;
passing light from a fourth LED string through a fourth luminophoric medium comprised of one or more luminescent materials and matrix in a fourth ratio for a fourth combined light in a cyan color range on 1931 CIE diagram; and,
mixing the first, second, third, and fourth combined light together.
2. The method of claim 1 , wherein
the luminescent materials within each of the first, second, third, and fourth luminophoric mediums comprise one or more of a first type of luminescent material that emits light at a peak emission between about 515 nm and 590 nm in response to the associated LED string emission; and,
one or more of a second type of luminescent material that emits light at a peak emission between about 590 nm and about 700 nm in response to the associated LED string emission.
3. The method of claim 2 , wherein
the one or more of the first type of luminescent materials comprise BaMgAl 10 O 17 :Eu, Lu 3 Al 5 O 12 :Ce, (La,Y) 3 Si 6 N 11 :Ce, or Y 3 Al 5 O 12 :Ce,
the one or more of the second type of luminescent materials comprise CaAlSiN 3 :Eu, (Sr,Ca)AlSiN 3 , or a semiconductor quantum dot.
4. The method of claim 2 , wherein
At least one of the first, second, and third LED strings each comprise an LED with peak wavelength of between about 385 nm and about 470 nm; and,
the fourth LED string comprises an LED with a peak wavelength of between about 485 nm and about 520 nm.
5. The method of claim 4 , wherein the first luminophoric medium comprises up to about 20% by volume of Y 3 Al 5 O 12 :Ce.
6. The method of claim 4 , wherein the second luminophoric medium comprises up to about 15% by volume of Y 3 Al 5 O 12 :Ce.
7. The method of claim 4 , wherein the third luminophoric medium comprises up to about 55% by volume of Y 3 Al 5 O 12 :Ce.
8. The method of claim 4 , wherein the fourth luminophoric medium comprises up to about 20% by volume of Y 3 Al 5 O 12 :Ce.
9. The method of claim 4 , wherein the first luminophoric medium comprises up to about 15% by volume of Lu 3 Al 5 O 12 :Ce.
10. The method of claim 4 , wherein the second luminophoric medium comprises up to about 15% by volume of Lu 3 Al 5 O 12 :Ce.
11. The method of claim 4 , wherein the third luminophoric medium comprises up to about 99% by volume of Lu 3 Al 5 O 12 :Ce.
12. The method of claim 11 , wherein the fourth luminophoric medium comprises up to about 30% by volume of Lu 3 Al 5 O 12 :Ce.
13. The method of claim 4 , wherein the first luminophoric medium comprises up to about 7.5% by volume of BaMgAl 10 O 17 :Eu.
14. The method of claim 4 , wherein the second luminophoric medium comprises up to about 15% by volume of BaMgAl 10 O 17 :Eu.
15. The method of claim 4 , wherein the third luminophoric medium comprises up to about 85% by volume of BaMgAl 10 O 17 :Eu.
16. The method of claim 4 , wherein the fourth luminophoric medium comprises up to about 10% by volume of BaMgAl 10 O 17 :Eu.
17. The method of claim 4 , wherein the first luminophoric medium comprises up to about 5% by volume of CaAlSiN 3 .
18. The method of claim 4 , wherein the second luminophoric medium comprises up to about 55% by volume of CaAlSiN 3 .
19. The method of claim 4 , wherein the third luminophoric medium comprises up to about 20% by volume of CaAlSiN 3 .
20. The method of claim 4 , wherein the fourth luminophoric medium comprises up to about 20% by volume of CaAlSiN 3 .
21. A method of generating white light, the method comprising
passing light from a first LED string through a first luminophoric medium comprised of one or more luminescent materials and matrix in a first ratio for a first combined light in a blue color range on 1931 CIE diagram, the first combined light formed within a first reflective cavity;
passing light from a second LED string through a second luminophoric medium comprised of one or more luminescent materials and matrix in a second ratio for a second combined light in a red color range on 1931 CIE diagram, the second combined light formed within a second reflective cavity;
passing light from a third LED string through a third luminophoric medium comprised of one or more luminescent materials and matrix in a third ratio for a third combined light in a yellow/green color range on 1931 CIE diagram, the third combined light formed within a third reflective cavity;
passing light from a fourth LED string through a fourth luminophoric medium comprised of one or more luminescent materials and matrix in a fourth ratio for a fourth combined light in a cyan color range on 1931 CIE diagram, the fourth combined light formed within a fourth reflective cavity; and,
mixing the first, second, third, and fourth combined light together.