IP Library Granted Patent US 11,028,976
Granted Patent B2
US 11,028,976 · App. 16/048,251 · Granted Jun 8, 2021

Illuminating with a multizone mixing cup

Inventors: Raghuram L. V Petluri (Los Angeles, CA); Paul Kenneth Pickard (Los Angeles, CA); Robert Fletcher (Los Angeles, CA)
Assignee: EcoSense Lighting, Inc.
F21K9/62F21K9/64F21V3/04F21V7/0083F21V9/30F21V9/38F21V13/14F21Y2103/10F21Y2105/10F21Y2113/13F21Y2115/10
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Quick Facts
Patent No.
US 11,028,976
App. No.
16/048,251
Granted
Jun 8, 2021
Kind
B2
Abstract

An 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 remote phosphor light converting appliance covering a cluster of LEDs providing a channel of light which is reflected upward. The predetermined blends of phosphors provide a predetermined range of illumination wavelengths in the output.

Claims (52)

1. A method of blending multiple light channels to produce a preselected illumination spectrum, the method comprising:

providing a common housing with an open top and openings at the bottom, each bottom opening placed over an LED illumination source;

placing a domed lumo converting appliance (DLCA) over the each bottom opening and over each LED illumination source;

altering the illumination produced by a first LED illumination source by passing it through a first domed lumo converting appliance (DLCA) associated with the common housing to produce a blue channel preselected spectral output;

altering the illumination produced by a second LED illumination source by passing it through a second DLCA associated with the common housing to produce a red channel preselected spectral output;

altering the illumination produced by a third LED illumination source by passing it through a third DLCA associated with the common housing to produce a yellow/green channel preselected spectral output;

altering the illumination produced by a fourth LED illumination source by passing it through a fourth DLCA associated with the common housing to produce a cyan channel preselected spectral output;

blending the blue, red, yellow/green, and cyan spectral outputs as they exit the common housing;

wherein the first, second, and third LED illumination sources are blue LEDs and the fourth LED illumination is cyan LEDs; wherein the blue LEDs have a substantially 440-475 nms output and the cyan LEDs have a substantially 490-515 nms output; and,

wherein each DLCA provides at least one of Phosphors A-F.

2. The method of claim 1 wherein:

phosphor blend “A” is Cerium doped lutetium aluminum garnet (Lu 3 Al 5 O 12 ) with an emission peak range of 530-540 nms;

phosphor blend “B” is Cerium doped yttrium aluminum garnet (Y 3 Al 5 O 12 ) with an emission peak range of 545-555 nms;

phosphor blend “C” is Cerium doped yttrium aluminum garnet (Y 3 Al 5 O 12 ) with an emission peak range of 645-655 nms;

phosphor blend “D” is GBAM:BaMgAl 10 O 17 :Eu with an emission peak range of 520-530 nms;

phosphor blend “E” is any semiconductor quantum dot material of appropriate size for an emission wavelength with a 620 nm peak and an emission peak of 625-635 nms; and,

phosphor blend “F” is any semiconductor quantum dot material of appropriate size for an emission wavelength with a 610 nm peak and an emission peak of 605-615 nms.

3. The method of claim 2 wherein the relative intensity of spectral output of the blue channel is substantially 32.8% for wavelengths between 380-420 nm, 100% for wavelengths between 421-460 nm, 66.5% for wavelengths between 461-500 nm, 25.7% for wavelengths between 501-540 nm, 36.6% for wavelengths between 541-580 nm, 39.7% for wavelengths between 581-620 nm, 36.1% for wavelengths between 621-660 nm, 15.5% for wavelengths between 661-700 nm, 5.9% for wavelengths between 701-740 nm and 2.1% for wavelengths between 741-780 nm.

4. The method of claim 2 wherein the relative intensity of spectral output of the red channel is substantially 3.9% for wavelengths between 380-420 nm, 6.9% for wavelengths between 421-460 nm, 3.2% for wavelengths between 461-500 nm, 7.9% for wavelengths between 501-540 nm, 14% for wavelengths between 541-580 nm, 55% for wavelengths between 581-620 nm, 100% for wavelengths between 621-660 nm, 61.8% for wavelengths between 661-700 nm, 25.1% for wavelengths between 701-740 nm and 7.7% for wavelengths between 741-780 nm.

5. The method of claim 2 wherein the relative intensity wherein the relative intensity of spectral output of the yellow/green channel is substantially 1% for wavelengths between 380-420 nm, 1.9% for wavelengths between 421-460 nm, 5.9% for wavelengths between 461-500 nm, 67.8% for wavelengths between 501-540 nm, 100% for wavelengths between 541-580 nm, 95% for wavelengths between 581-620 nm, 85.2% for wavelengths between 621-660 nm, 48.1% for wavelengths between 661-700 nm, 18.3% for wavelengths between 701-740 nm and 5.6% for wavelengths between 741-780 nm.

6. The method of claim 2 wherein the relative intensity of spectral output of the cyan channel is substantially 0.2% for wavelengths between 380-420 nm, 0.8% for wavelengths between 421-460 nm, 49.2% for wavelengths between 461-500 nm, 100% for wavelengths between 501-540 nm, 58.4% for wavelengths between 541-580 nm, 41.6% for wavelengths between 581-620 nm, 28.1% for wavelengths between 621-660 nm, 13.7% for wavelengths between 661-700 nm, 4.5% for wavelengths between 701-740 nm and 1.1% for wavelengths between 741-780 nm.

7. The method of claim 2 wherein the relative intensity of spectral output of the blue channel is substantially 32.8% for wavelengths between 380-420 nm, 100% for wavelengths between 421-460 nm, 66.5% for wavelengths between 461-500 nm, 25.7% for wavelengths between 501-540 nm, 36.6% for wavelengths between 541-580 nm, 39.7% for wavelengths between 581-620 nm, 36.1% for wavelengths between 621-660 nm, 15.5% for wavelengths between 661-700 nm, 5.9% for wavelengths between 701-740 nm and 2.1% for wavelengths between 741-780 nm;

wherein the relative intensity of spectral output of the red channel is substantially 3.9% for wavelengths between 380-420 nm, 6.9% for wavelengths between 421-460 nm, 3.2% for wavelengths between 461-500 nm, 7.9% for wavelengths between 501-540 nm, 14% for wavelengths between 541-580 nm, 55% for wavelengths between 581-620 nm, 100% for wavelengths between 621-660 nm, 61.8% for wavelengths between 661-700 nm, 25.1% for wavelengths between 701-740 nm and 7.7% for wavelengths between 741-780 nm;

wherein the relative intensity of spectral output of the yellow/green channel is substantially 1% for wavelengths between 380-420 nm, 1.9% for wavelengths between 421-460 nm, 5.9% for wavelengths between 461-500 nm, 67.8% for wavelengths between 501-540 nm, 100% for wavelengths between 541-580 nm, 95% for wavelengths between 581-620 nm, 85.2% for wavelengths between 621-660 nm, 48.1% for wavelengths between 661-700 nm, 18.3% for wavelengths between 701-740 nm and 5.6% for wavelengths between 741-780 nm; and,

wherein the relative intensity of spectral output of the cyan channel is substantially 0.2% for wavelengths between 380-420 nm, 0.8% for wavelengths between 421-460 nm, 49.2% for wavelengths between 461-500 nm, 100% for wavelengths between 501-540 nm, 58.4% for wavelengths between 541-580 nm, 41.6% for wavelengths between 581-620 nm, 28.1% for wavelengths between 621-660 nm, 13.7% for wavelengths between 661-700 nm, 4.5% for wavelengths between 701-740 nm and 1.1% for wavelengths between 741-780 nm.

8. A method of blending multiple light channels to produce a preselected illumination spectrum, the method comprising:

providing a common housing having an open top, a plurality of reflective cavities with open bottoms, and each cavity having an open top, each open bottom placed over an LED illumination source;

placing a lumo converting device over each cavity's open top;

altering the illumination produced by a first LED illumination source by passing it through a first lumo converting appliance (LCA) to produce a blue channel preselected spectral output;

altering the illumination produced by a second LED illumination source by passing it through a second LCA to produce a red channel preselected spectral output;

altering the illumination produced by a third LED illumination source by passing it through a third LCA to produce a yellow/green channel preselected spectral output;

altering the illumination produced by a fourth LED illumination source by passing it through a fourth LCA to produce a cyan channel preselected spectral output;

blending the blue, red, yellow/green and cyan spectral outputs as they exit the common housing;

wherein the first, second, and third LED illumination sources are blue LEDs and the fourth LED illumination is cyan LEDs;

wherein the blue LEDs have a substantially 440-475 nms output and the cyan LEDs have a substantially 490-515 nms output; and,

wherein each LCA provides at least one of Phosphors A-F.

9. The method of claim 8 wherein at least one of the LED illumination sources is a cluster of LEDs.

10. The method of claim 8 wherein:

phosphor blend “A” is Cerium doped lutetium aluminum garnet (Lu 3 Al 5 O 12 ) with an emission peak range of 530-540 nms;

phosphor blend “B” is Cerium doped yttrium aluminum garnet (Y 3 Al 5 O 12 ) with an emission peak range of 545-555 nms;

phosphor blend “C” is Cerium doped yttrium aluminum garnet (Y 3 Al 5 O 12 ) with an emission peak range of 645-655 nms;

phosphor blend “D” is GBAM:BaMgAl 10 O 17 :Eu with an emission peak range of 520-530 nms;

phosphor blend “E” is any semiconductor quantum dot material of appropriate size for an emission wavelength with a 620 nm peak and an emission peak of 625-635 nms; and,

phosphor blend “F” is any semiconductor quantum dot material of appropriate size for an emission wavelength with a 610 nm peak and an emission peak of 605-615 nms.

11. The method of claim 10 wherein the relative intensity of spectral output of the blue channel is substantially 32.8% for wavelengths between 380-420 nm, 100% for wavelengths between 421-460 nm, 66.5% for wavelengths between 461-500 nm, 25.7% for wavelengths between 501-540 nm, 36.6% for wavelengths between 541-580 nm, 39.7% for wavelengths between 581-620 nm, 36.1% for wavelengths between 621-660 nm, 15.5% for wavelengths between 661-700 nm, 5.9% for wavelengths between 701-740 nm and 2.1% for wavelengths between 741-780 nm.

12. The method of claim 10 wherein the relative intensity of spectral output of the red channel is substantially 3.9% for wavelengths between 380-420 nm, 6.9% for wavelengths between 421-460 nm, 3.2% for wavelengths between 461-500 nm, 7.9% for wavelengths between 501-540 nm, 14% for wavelengths between 541-580 nm, 55% for wavelengths between 581-620 nm, 100% for wavelengths between 621-660 nm, 61.8% for wavelengths between 661-700 nm, 25.1% for wavelengths between 701-740 nm and 7.7% for wavelengths between 741-780 nm.

13. The method of claim 10 wherein the relative intensity of spectral output of the yellow/green channel is substantially 1% for wavelengths between 380-420 nm, 1.9% for wavelengths between 421-460 nm, 5.9% for wavelengths between 461-500 nm, 67.8% for wavelengths between 501-540 nm, 100% for wavelengths between 541-580 nm, 95% for wavelengths between 581-620 nm, 85.2% for wavelengths between 621-660 nm, 48.1% for wavelengths between 661-700 nm, 18.3% for wavelengths between 701-740 nm and 5.6% for wavelengths between 741-780 nm.

14. The method of claim 10 wherein the relative intensity of spectral output of the cyan channel is substantially 0.2% for wavelengths between 380-420 nm, 0.8% for wavelengths between 421-460 nm, 49.2% for wavelengths between 461-500 nm, 100% for wavelengths between 501-540 nm, 58.4% for wavelengths between 541-580 nm, 41.6% for wavelengths between 581-620 nm, 28.1% for wavelengths between 621-660 nm, 13.7% for wavelengths between 661-700 nm, 4.5% for wavelengths between 701-740 nm and 1.1% for wavelengths between 741-780 nm.

15. The method of claim 10 wherein the relative intensity of spectral output of the blue channel is substantially 32.8% for wavelengths between 380-420 nm, 100% for wavelengths between 421-460 nm, 66.5% for wavelengths between 461-500 nm, 25.7% for wavelengths between 501-540 nm, 36.6% for wavelengths between 541-580 nm, 39.7% for wavelengths between 581-620 nm, 36.1% for wavelengths between 621-660 nm, 15.5% for wavelengths between 661-700 nm, 5.9% for wavelengths between 701-740 nm and 2.1% for wavelengths between 741-780 nm;

wherein the relative intensity of spectral output of the red channel is substantially 3.9% for wavelengths between 380-420 nm, 6.9% for wavelengths between 421-460 nm, 3.2% for wavelengths between 461-500 nm, 7.9% for wavelengths between 501-540 nm, 14% for wavelengths between 541-580 nm, 55% for wavelengths between 581-620 nm, 100% for wavelengths between 621-660 nm, 61.8% for wavelengths between 661-700 nm, 25.1% for wavelengths between 701-740 nm and 7.7% for wavelengths between 741-780 nm;

wherein the relative intensity of spectral output of the yellow/green channel is substantially 1% for wavelengths between 380-420 nm, 1.9% for wavelengths between 421-460 nm, 5.9% for wavelengths between 461-500 nm, 67.8% for wavelengths between 501-540 nm, 100% for wavelengths between 541-580 nm, 95% for wavelengths between 581-620 nm, 85.2% for wavelengths between 621-660 nm, 48.1% for wavelengths between 661-700 nm, 18.3% for wavelengths between 701-740 nm and 5.6% for wavelengths between 741-780 nm; and,

wherein the relative intensity of spectral output of the cyan channel is substantially 0.2% for wavelengths between 380-420 nm, 0.8% for wavelengths between 421-460 nm, 49.2% for wavelengths between 461-500 nm, 100% for wavelengths between 501-540 nm, 58.4% for wavelengths between 541-580 nm, 41.6% for wavelengths between 581-620 nm, 28.1% for wavelengths between 621-660 nm, 13.7% for wavelengths between 661-700 nm, 4.5% for wavelengths between 701-740 nm and 1.1% for wavelengths between 741-780 nm.

Assignments (2)
NUNC PRO TUNC ASSIGNMENT Recorded Feb 21, 2022
From: ECOSENSE LIGHTING INC.
To: KORRUS, INC.
Reel/Frame 059239/0614 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 31, 2019
From: PETLURI, RAGHURAM L. V.; PICKARD, PAUL KENNETH; FLETCHER, ROBERT
To: ECOSENSE LIGHTING INC.
Reel/Frame 049923/0469 →