Multizone mixing cup illumination system
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 light converting appliance covering a cluster of LEDs providing a channel of light which is reflected upward. The predetermined blends of luminescence materials provide a predetermined range of illumination wavelengths in the output. The remote light converting appliances may be provided as frustoconical elements directly adjacent to the LEDs within frustoconical reflective cavities. An index matching compound can be disposed between the light converting appliances and the associated LEDs.
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 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;
affixing a volumetric lumo converting appliance (VLCA) within the internal volume of each of the plurality of reflective cavities;
altering a first illumination produced by a first LED illumination source by passing the first illumination produced by the first LED illumination source through a first VLCA to produce a blue channel preselected spectral output;
altering a second illumination produced by a second LED illumination source by passing the second illumination produced by the second LED illumination source through a second VLCA to produce a red channel preselected spectral output;
altering a third illumination produced by a third LED illumination source by passing the third illumination produced by the third LED illumination source through a third VLCA to produce a yellow/green channel preselected spectral output;
altering a fourth illumination produced by a fourth LED illumination source by passing the fourth illumination produced by the fourth LED illumination source through a fourth VLCA 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 comprise one or more blue LEDs and the fourth LED illumination source comprises one or more blue LEDs, one or more cyan LEDs, or a combination thereof.
2. The method of claim 1 , wherein each of the plurality of reflective cavities has a substantially frustoconical shape.
3. The method of claim 2 , wherein each of the VLCAs has a substantially frustoconical shape.
4. The method of claim 1 , wherein the bottom surface of each of the VLCAs is adjacent to the top surface of the associated LED illumination source.
5. The method of claim 4 , wherein an index matching compound is provided between the bottom surface of each of the VLCAs and the top surface of the associated LED illumination source.
6. The method of claim 5 , wherein the bottom portion of each of the VLCAs is formed with one or more physical features to match one or more corresponding physical features of the associated LED illumination source.
7. The method of claim 6 , wherein the one or more corresponding physical features of the associated LED illumination source comprises an encapsulant layering around the LED illumination source.
8. The method of claim 1 , wherein each of the plurality of reflective cavities has a substantially frustoconical shape with a plurality of surface features provided on the interior walls.
9. The method of claim 1 , wherein the affixing of the VLCAs is performed by injection molding the VLCAs within each of the reflective cavities.
10. The method of claim 1 , wherein the affixing of the VLCAs is performed by molding the VLCAs in tooling separate from the reflective cavities and then subsequently inserting the VLCAs into the reflective cavities.
11. The method of claim 1 , wherein the fourth LED illumination source comprises one or more cyan LEDs.
12. The method of claim 1 , 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; and
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.