Granted Patent B2

US 10,196,565 · App. 14/917,870 · Granted Feb 5, 2019

Abstract

Claims (76)

1. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green light source having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red light source having peak wavelength in the range of about 600 nm to about 680 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

2. The composite light source of claim 1 comprising an LPI of at least 130, wherein the at least one green or yellow-green light source has a peak wavelength of about 510 nm to about 570 nm, and the at least one red light source has a peak wavelength of about 610 nm to about 680 nm.

3. The composite light source of claim 1 comprising an LPI of at least 140, wherein the at least one green or yellow-green light source has a peak wavelength of about 520 nm to about 560 nm, and the at least one red light source has a peak wavelength of about 620 nm to about 680 nm.

4. The composite light source of claim 3 , wherein at least one of the at least one blue light source, the at least one green or yellow-green light source, and the at least one red light source comprises a solid state light source or a phosphor.

5. The composite light source of claim 4 , wherein the solid state light source comprises at least one of a semiconductor light-emitting diode (LED) light source, an organic light-emitting diode (OLED) light source, and a polymer light-emitting diode light source.

6. The composite light source of claim 1 having a correlated color temperature (CCT) in the range of about 2500 Kelvin (K) to about 3200 K.

7. The composite light source of claim 1 further comprising a neodymium filter placed over the at least one blue light source, the at least one green or yellow-green light source, and the at least one red light source, such that most or all of the light emitted by the composite light source passes through the filter.

8. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green solid state light source having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red solid state light source having peak wavelength in the range of about 600 nm to about 680 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

9. The composite light source of claim 8 comprising an LPI of at least 130, wherein the at least one green or yellow-green solid state light source has a peak wavelength of about 510 nm to about 570 nm, and the at least one red light source has a peak wavelength of about 610 nm to about 680 nm.

10. The composite light source of claim 8 comprising an LPI of at least 140, wherein the at least one green or yellow-green solid state light source has a peak wavelength of about 520 nm to about 560 nm, and the at least one red solid state light source has a peak wavelength of about 620 nm to about 680 nm.

11. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green solid state light source having peak wavelength in the range of about 500 nm to about 580 nm and having full-width-at-half-maximum (FWHM) less than 55 nm; and

at least one red solid state light source having peak wavelength in the range of about 600 nm to about 680 nm and having FWHM less than 35 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

12. The composite light source of claim 11 comprising an LPI of at least 130, wherein the at least one green or yellow-green solid state light source has a peak wavelength of about 510 nm to about 570 nm, and the at least one red solid state light source has a peak wavelength of about 610 nm to about 680 nm.

13. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green solid state light source having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red down-converter having peak wavelength in the range of about 600 nm to about 680 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

14. The composite light source of claim 13 comprising an LPI of at least 130, wherein the at least one green or yellow-green solid state light source has a peak wavelength of about 510 nm to about 570 nm, and the at least one red down-converter has a peak wavelength of about 610 nm to about 680 nm.

15. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green solid state light source having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red down-converter having peak wavelength in the range of about 600 nm to about 680 nm and having full-width-at-half-maximum (FWHM) less than 35 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

16. The composite light source of claim 15 further comprising a neodymium filter placed over the at least one blue light source, the at least one green or yellow-green solid state light source, and the at least one red down-converter, such that most or all of the light emitted by the composite light source passes through the filter.

17. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green down-converter having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red solid state light source having peak wavelength in the range of about 600 nm to about 680 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

18. The composite light source of claim 17 having a correlated color temperature (CCT) in the range of about 2500 Kelvin (K) to about 3200 K.

19. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green down-converter having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red solid state light source having peak wavelength in the range of about 600 nm to about 680 nm and having full-width-at-half-maximum (FWHM) less than 35 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

20. The composite light source of claim 19 comprising an LPI of at least 130, wherein the at least one green or yellow-green down-converter has a peak wavelength of about 510 nm to about 570 nm, and the at least one red solid state light source has a peak wavelength of about 610 nm to about 680 nm.

21. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green down-converter having peak wavelength in the range of about 500 nm to about 580 nm;

at least one red solid state light source having peak wavelength in the range of about 600 nm to about 680 nm and having full-width-at-half-maximum (FWHM) less than 35 nm; and

at least one deep red light source having peak wavelength in the range of about 630 nm to about 680 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

22. The composite light source of claim 21 comprising an LPI of at least 140, wherein the at least one green or yellow-green down-converter has a peak wavelength of about 520 nm to about 560 nm, and the at least one red solid state light source has a peak wavelength of about 620 nm to about 680 nm.

23. The composite light source of claim 21 having a correlated color temperature (CCT) in the range of about 2500 Kelvin (K) to about 3200 K.

24. The composite light source of claim 21 further comprising a neodymium filter placed over the at least one blue light source, the at least one green or yellow-green down-converter, the at least one red solid state light source, and the at least one deep red light source, such that most or all of the light emitted by the composite light source passes through the filter.

25. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green down-converter having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red down-converter having peak wavelength in the range of about 600 nm to about 680 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

26. The composite light source of claim 25 comprising an LPI of at least 130, wherein the at least one green or yellow-green down-converter has a peak wavelength of about 510 nm to about 570 nm, and the at least one red down-converter has a peak wavelength of about 610 nm to about 680 nm.

27. The composite light source of claim 25 having a correlated color temperature (CCT) in the range of about 2500 Kelvin (K) to about 3200 K.

28. The composite light source of claim 25 further comprising a neodymium filter placed over the at least one blue light source, the at least one green or yellow-green down-converter, and the at least one red down-converter, such that most or all of the light emitted by the composite light source passes through the filter.

29. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green down-converter having peak wavelength in the range of about 500 nm to about 580 nm; and

at least one red down-converter having peak wavelength in the range of about 600 nm to about 680 nm and having full-width-at-half-maximum (FWHM) less than 35 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

30. A composite light source comprising:

at least one blue light source having peak wavelength in the range of about 400 nanometer (nm) to about 460 nm;

at least one green or yellow-green down-converter having peak wavelength in the range of about 500 nm to about 580 nm;

at least one red down-converter having peak wavelength in the range of about 600 nm to about 680 nm and having full-width-at-half-maximum (FWHM) less than 35 nm; and

at least one deep red light source having peak wavelength in the range of about 630 nm to about 680 nm;

wherein the composite light source has a Lighting Preference Index (LPI) of at least 120.

Assignments (7)