US Patent No. 9,772,073

ILLUMINATING WITH A MULTIZONE MIXING CUP


Patent No. 9,772,073
Issue Date September 26, 2017
Title Illuminating With A Multizone Mixing Cup
Inventorship Raghuram L. V. Petluri, Los Angeles, CA (US)
Paul Kenneth Pickard, Los Angeles, CA (US)
Robert Fletcher, Los Angeles, CA (US)
Assignee Ecosense Lighting Inc., Los Angeles, CA (US)

Claim of US Patent No. 9,772,073

1. A method of blending multiple light channels to produce a preselected illumination spectrum of substantially white light,
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 each bottom opening and over each LED illumination source;
altering the illumination produced by a first LED illumination source by passing the illumination produced by the first LED
illumination source 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 the second LED illumination source by passing the illumination produced by a second
LED illumination source through a second DLCA associated with the common housing to produce a red channel preselected spectral
output;

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

altering the illumination produced by the fourth LED illumination source by passing the illumination produced by a fourth
LED illumination source 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 the blue, red, yellow/green, and cyan spectral outputs
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 nm output and the cyan LEDs have a substantially 490-515 nm output; wherein
each DLCA provides at least one photoluminescent material selected from Phosphors “A”, “B”, “C”, “D”, “E”, and “F”;

wherein:
Phosphor “A” is Cerium doped lutetium aluminum garnet (Lu3Al5O12) with an emission peak range of 530-540 nm;

Phosphor “B” is Cerium doped yttrium aluminum garnet (Y3Al5O12) with an emission peak range of 545-555 nm;

Phosphor “C” is Cerium doped yttrium aluminum garnet (Y3Al5O12) with an emission peak range of 645-655 nm;

Phosphor “D” is GBAM: BaMgAl10O17:Eu with an emission peak range of 520-530 nm;

Phosphor “E” is any semiconductor quantum dot material of appropriate size for an emission peak range of 625-635 nm; and,
Phosphor “F” is any semiconductor quantum dot material of appropriate size for an emission peak range of 605-615 nm; and
wherein one or more of the spectral outputs of the blue, red, green/yellow, and red channels are 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 for the blue channel;

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 for the red channel;

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 for the yellow/green channel; or

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 for the cyan channel.