Solid state lighting device including green shifted red component
First Claim
1. A lighting device comprising:
- at least one first solid state light emitter comprising a dominant wavelength in a range of from 500 nm to 570 nm;
at least one second solid state light emitter comprising a peak wavelength in a range of from 430 nm to 480 nm; and
at least one first lumiphor arranged to receive emissions from the at least one first solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength of at least about 591 nm;
wherein the lighting device is arranged to output combined emissions including at least a portion of light emissions generated by each of the at least one first solid state light emitter, the at least one second solid state light emitter, and the at least one first lumiphor; and
wherein the lighting device is devoid of any lumiphor (a) comprising a peak wavelength in a range of from 555 nm to 590 nm, and (b) being arranged to receive emissions from the second solid state light emitter.
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Accused Products
Abstract
A green-shifted red solid state lighting device includes at least one green solid state light emitter arranged to stimulate emissions from at least one red lumiphor, arranged in combination with at least one blue solid state light emitter. Such device may be devoid of any yellow lumiphor arranged to be stimulated by a blue solid state light emitter. A green shifted red plus blue (GSR+B) lighting device exhibits reduced Stokes Shift losses as compared to a blue shifted yellow plus red (BSY+R) lighting device, with comparable color rendering performance and similar efficiency, enhanced color stability over a range of operating temperatures, and enhanced color rendering performance at higher correlated color temperatures. Additional solid state emitters and/or lumiphors may be provided.
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Citations
45 Claims
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1. A lighting device comprising:
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at least one first solid state light emitter comprising a dominant wavelength in a range of from 500 nm to 570 nm; at least one second solid state light emitter comprising a peak wavelength in a range of from 430 nm to 480 nm; and at least one first lumiphor arranged to receive emissions from the at least one first solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength of at least about 591 nm; wherein the lighting device is arranged to output combined emissions including at least a portion of light emissions generated by each of the at least one first solid state light emitter, the at least one second solid state light emitter, and the at least one first lumiphor; and wherein the lighting device is devoid of any lumiphor (a) comprising a peak wavelength in a range of from 555 nm to 590 nm, and (b) being arranged to receive emissions from the second solid state light emitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A lighting device comprising:
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at least one first solid state light emitter comprising a dominant wavelength in a range of from 500 nm to 570 nm; at least one second solid state light emitter comprising a peak wavelength in a range of from 430 nm to 480 nm; and at least one first lumiphor arranged to receive emissions from the at least one first solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength of at least about 591 nm; wherein the at least one first lumiphor is spatially segregated from the first solid state light emitter; wherein the lighting device is arranged to output combined emissions including at least a portion of light emissions generated by each of the at least one first solid state light emitter, the at least one second solid state light emitter, and the at least one first lumiphor. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A lighting device comprising:
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a first solid state emitter comprising a first dominant wavelength; a second solid state light emitter comprising a second dominant wavelength that differs from the first dominant wavelength by at least 20 nm; and a lumiphor arranged to receive emissions from one or more of (i) the at least one first solid state light emitter and (ii) the at least one second solid state light emitter, and responsively generate lumiphor emissions; wherein the lighting device is arranged to output combined emissions including at least a portion of light emissions generated by each of the first solid state light emitter, the second solid state light emitter, and the lumiphor; and wherein the combined emissions embody at least one of (a) a color rendering index (CRI Ra) value of at least 85 over a correlative color temperature (CCT) range of from 5000K to 3000K, and (b) a color quality scale (CQS) value of at least 85 over a correlative color temperature (CCT) range of from 5000K to 3000K. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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43. A lighting device comprising:
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at least one first solid state light emitter comprising a dominant wavelength in a range of from 500 nm to 570 nm; at least one first lumiphor arranged to receive emissions from the at least one first solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength in a range of from 591 nm to 700 nm; at least one second solid state light emitter comprising a peak wavelength in a range of from 430 nm to 480 nm; at least one second lumiphor arranged to receive emissions from the at least one second solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength in a range of from 591 nm to 700 nm; at least one third solid state light emitter comprising a peak wavelength in a range of from 430 nm to 480 nm; and at least one third lumiphor arranged to receive emissions from the at least one third solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength in a range of from 500 nm to 570 nm.
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44. A lighting device comprising:
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at least one first solid state light emitter comprising a dominant wavelength in a range of from 500 nm to 570 nm; at least one first lumiphor arranged to receive emissions from the at least one first solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength of at least about 591 nm; at least one second solid state light emitter comprising a peak wavelength in a range of from 430 nm to 470 nm; and at least one third solid state light emitter comprising a peak wavelength in a range of from 470 to 500 nm; and wherein the lighting device is arranged to output combined emissions including at least a portion of light emissions generated by each of the at least one first solid state light emitter, the at least one first lumiphor, the at least one second solid state light emitter, and the at least one third solid state light emitter.
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45. A lighting device comprising:
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at least one first solid state light emitter comprising a dominant wavelength in a range of from 500 nm to 570 nm; at least one first lumiphor arranged to receive emissions from the at least one first solid state light emitter and responsively generate lumiphor emissions comprising a peak wavelength in a range of from 591 nm to 700 nm; at least one second solid state light emitter comprising a peak wavelength in a range of from 430 nm to 480 nm; at least one third solid state light emitter comprising a peak wavelength in a range of from 500 nm to 570 nm; and at least one fourth solid state light emitter comprising a peak wavelength in a range of from 591 to 700 nm.
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Specification