Lighting device and lighting method
First Claim
Patent Images
1. A lighting device comprising:
- a first group of solid state light emitters;
a first luminescent material; and
a second luminescent material,wherein;
said first group of solid state light emitters, if illuminated, would emit light having a peak wavelength in the near ultraviolet range or in the ultraviolet range;
said first luminescent material, if excited, would emit light having a dominant wavelength in the range of from about 480 nm to about 490 nm;
said second luminescent material, if excited, would emit light having a dominant wavelength in the range of from about 580 nm to about 590 nm; and
if said first group of solid state light emitters is illuminated, a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said first luminescent material, and (3) light emitted from said lighting device which was emitted by said second luminescent material would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram.
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Abstract
A lighting device comprising one or more solid state light emitters which emit near ultraviolet light or ultraviolet light, one or more other emitters which emit light in the range of 480 nm to about 490 nm and one or more other emitters which emit light in the range of 580 nm to about 590 nm, to make a mixture which in the absence of any other light would have a combined illumination which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. One or more of the other emitters is a lumiphor. One or more of the other emitters can be a solid state light emitter. Also, packaged solid state light emitters and methods of lighting.
228 Citations
47 Claims
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1. A lighting device comprising:
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a first group of solid state light emitters; a first luminescent material; and a second luminescent material, wherein; said first group of solid state light emitters, if illuminated, would emit light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; said first luminescent material, if excited, would emit light having a dominant wavelength in the range of from about 480 nm to about 490 nm; said second luminescent material, if excited, would emit light having a dominant wavelength in the range of from about 580 nm to about 590 nm; and if said first group of solid state light emitters is illuminated, a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said first luminescent material, and (3) light emitted from said lighting device which was emitted by said second luminescent material would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 42)
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16. A lighting device comprising:
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a first group of solid state light emitters; a second group of solid state light emitters; and a first luminescent material, wherein; said first group of solid state light emitters, if illuminated, would emit light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; said second group of solid state light emitters, if illuminated, would emit light having a dominant wavelength in the range of from about 480 nm to about 490 nm; said first luminescent material, if excited, would emit light having a dominant wavelength in the range of from about 580 nm to about 590 nm; and if said first and second groups of solid state light emitters are illuminated, a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said second group of solid state light emitters, and (3) light emitted from said lighting device which was emitted by said first luminescent material would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 43)
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24. A lighting device comprising:
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a first group of solid state light emitters; a second group of solid state light emitters; and a first luminescent material, wherein; said first group of solid state light emitters, if illuminated, would emit light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; said second group of solid state light emitters, if illuminated, would emit light having a dominant wavelength in the range of from about 580 nm to about 590 nm; said first luminescent material, if excited, would emit light having a dominant wavelength in the range of from about 480 nm to about 490 nm; and if said first and second groups of solid state light emitters are illuminated, a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said second group of solid state light emitters, and (3) light emitted from said lighting device which was emitted by said first luminescent material would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. A method of lighting, comprising:
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illuminating a first group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; exciting a first group of lumiphors, such that said first group of lumiphors emits light having a dominant wavelength in the range of from about 480 nm to about 490 nm; exciting a second group of lumiphors, such that said second group of lumiphors emits light having a dominant wavelength in the range of from about 580 nm to about 590 nm; wherein; a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said first group of lumiphors and (3) light emitted from said lighting device which was emitted by said second group of lumiphors would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (33, 34, 35, 44)
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36. A method of lighting, comprising:
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illuminating a first group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; illuminating a second group of solid state light emitters, such that said second group of solid state light emitters emits light having a dominant wavelength in the range of from about 480 nm to about 490 nm; exciting a first group of lumiphors, such that said first group of lumiphors emits light having a dominant wavelength in the range of from about 580 nm to about 590 nm; wherein; a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said second group of solid state light emitters and (3) light emitted from said lighting device which was emitted by said first group of lumiphors would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (37, 38)
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39. A method of lighting, comprising:
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illuminating a first group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; illuminating a second group of solid state light emitters, such that said second group of solid state light emitters emits light having a dominant wavelength in the range of from about 580 nm to about 590 nm; exciting a first group of lumiphors, such that said first group of lumiphors emits light having a dominant wavelength in the range of from about 480 nm to about 490 nm; wherein; a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said second group of solid state light emitters and (3) light emitted from said lighting device which was emitted by said first group of lumiphors would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (40, 41)
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45. A method of lighting, comprising:
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illuminating a first group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; exciting a first luminescent material, such that said first luminescent material emits light having a dominant wavelength in the range of from about 480 nm to about 490 nm; exciting a second luminescent material, such that said second luminescent material emits light having a dominant wavelength in the range of from about 580 nm to about 590 nm; wherein; a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said first luminescent material and (3) light emitted from said lighting device which was emitted by said second luminescent material would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram.
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46. A method of lighting, comprising:
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illuminating a first group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; illuminating a second group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the range of from about 480 nm to about 490 nm; exciting a first luminescent material, such that said second luminescent material emits light having a dominant wavelength in the range of from about 580 nm to about 590 nm; wherein; a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said second group of solid state light emitters and (3) light emitted from said lighting device which was emitted by said first luminescent material would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram.
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47. A method of lighting, comprising:
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illuminating a first group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the near ultraviolet range or in the ultraviolet range; illuminating a second group of solid state light emitters, such that said first group of solid state light emitters emits light having a peak wavelength in the range of from about 580 nm to about 590 nm; exciting a first luminescent material, such that said second luminescent material emits light having a dominant wavelength in the range of from about 480 nm to about 490 nm; wherein; a mixture of (1) light emitted from said lighting device which was emitted by said first group of solid state light emitters, (2) light emitted from said lighting device which was emitted by said second group of solid state light emitters and (3) light emitted from said lighting device which was emitted by said first luminescent material would, in the absence of any additional light, have a combined illumination having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within twenty MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram.
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Specification