LIGHTING DEVICE AND LIGHTING METHOD
First Claim
1. A lighting device comprising:
- at least one white light source having a CRI of 75 or less, andat least one additional source of visible light comprising at least one additional source of visible light of a first additional hue, said at least one additional source of visible light being selected from among solid state light emitters and luminescent materials,wherein mixing of light from said white light source and light from said at least one additional source of visible light produces a mixed illumination which has a CRI of greater than 75.
1 Assignment
0 Petitions
Accused Products
Abstract
A lighting device comprising sources of visible light comprising solid state light emitters and/or luminescent materials emitting three or four different hues. A first group of the sources, when illuminated, emit light of two hues which, if combined, would produce illumination having coordinates within an area on a 1931 CIE Chromaticity Diagram defined by points having coordinates: 0.59, 0.24; 0.40, 0.50; 0.24, 0.53; 0.17, 0.25; and 0.30, 0.12. A second group of the sources is of an additional hue. Mixing light from the first and second groups produces illumination within ten MacAdam ellipses of the blackbody locus. Also, a lighting device comprising a white light source having a CRI of 75 or less and at least one solid state light emitters and/or luminescent material. Also, methods of lighting.
111 Citations
40 Claims
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1. A lighting device comprising:
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at least one white light source having a CRI of 75 or less, and at least one additional source of visible light comprising at least one additional source of visible light of a first additional hue, said at least one additional source of visible light being selected from among solid state light emitters and luminescent materials, wherein mixing of light from said white light source and light from said at least one additional source of visible light produces a mixed illumination which has a CRI of greater than 75. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lighting device comprising:
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at least one white light source having a CRI of 75 or less, and additional sources of visible light comprising at least one additional source of visible light of a first additional hue and at least one additional source of visible light of a second additional hue, said additional sources of visible light being selected from among solid state light emitters and luminescent materials, wherein mixing of light from said white light source and light from said additional sources of visible light produces a mixed illumination which has a CRI of greater than 75. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of lighting, comprising:
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mixing light from a white light source having a CRI of 75 or less, and light from at least one additional source of visible light comprising at least one additional source of visible light of a first additional hue, said at least one additional source of visible light being selected from among solid state light emitters and luminescent materials, wherein mixing of light from said white light source and light from said at least one additional source of visible light produces a mixed illumination which has a CRI of greater than 75. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of lighting, comprising:
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mixing light from a white light source having a CRI of 75 or less, and light from additional sources of visible light comprising at least one additional source of visible light of a first additional hue and at least one additional source of visible light of a second additional hue, said additional sources of visible light being selected from among solid state light emitters and luminescent materials, wherein mixing of light from said white light source and light from said additional sources of visible light produces a mixed illumination which has a CRI of greater than 75. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification