Lighting device and lighting method
First Claim
1. A lighting device comprising:
- at least first and second solid state light emitters;
at least first and second portions of luminescent material,wherein;
if electricity is supplied to the first solid state light emitter to cause the first solid state light emitter to emit light, at least a portion of light emitted from the first solid state light emitter would excite at least some of the first portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the first solid state light emitter and light exiting the lighting device that was emitted from the first portion of luminescent material would, in the absence of any additional light, have a mixed illumination corresponding to a first point on a 1931 CIE Chromaticity Diagram, said first point having a first correlated color temperature or color temperature;
if electricity is supplied to the second solid state light emitter to cause the second solid state light emitter to emit light, a portion of light emitted from the second solid state light emitter would excite at least some of the second portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the second solid state light emitter and light exiting the lighting device that was emitted from the second portion of luminescent material would, in the absence of any additional light, have a mixed illumination corresponding to a second point on a 1931 CIE Chromaticity Diagram, said second point having a second correlated color temperature or color temperature,said first correlated color temperature or color temperature differing from said second correlated color temperature or color temperature by at least 50 K.
2 Assignments
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Accused Products
Abstract
A lighting device comprising first and second groups of solid state light emitters, which emit light having peak wavelength in ranges of from 430 nm to 480 nm, and first and second groups of lumiphors which emit light having dominant wavelength in the range of from 555 nm to 585 nm. In some embodiments, if current is supplied to a power line, a combination of (1) light exiting the lighting device which was emitted by the first group of emitters, and (2) light exiting the lighting device which was emitted by the first group of lumiphors would have a correlated color temperature which differs by at least 50 K from a correlated color temperature which would be emitted by a combination of (3) light exiting the lighting device which was emitted by the second group of emitters, and (4) light exiting the lighting device which was emitted by the second group of lumiphors.
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Citations
31 Claims
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1. A lighting device comprising:
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at least first and second solid state light emitters; at least first and second portions of luminescent material, wherein; if electricity is supplied to the first solid state light emitter to cause the first solid state light emitter to emit light, at least a portion of light emitted from the first solid state light emitter would excite at least some of the first portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the first solid state light emitter and light exiting the lighting device that was emitted from the first portion of luminescent material would, in the absence of any additional light, have a mixed illumination corresponding to a first point on a 1931 CIE Chromaticity Diagram, said first point having a first correlated color temperature or color temperature; if electricity is supplied to the second solid state light emitter to cause the second solid state light emitter to emit light, a portion of light emitted from the second solid state light emitter would excite at least some of the second portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the second solid state light emitter and light exiting the lighting device that was emitted from the second portion of luminescent material would, in the absence of any additional light, have a mixed illumination corresponding to a second point on a 1931 CIE Chromaticity Diagram, said second point having a second correlated color temperature or color temperature, said first correlated color temperature or color temperature differing from said second correlated color temperature or color temperature by at least 50 K. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. 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 at least first and second portions of luminescent material, if electricity is supplied to the first group of solid state light emitters to cause the first group of solid state light emitters to emit light, at least a portion of light emitted from the first group of solid state light emitters would excite at least some of the first portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the first group of solid state light emitters and light exiting the lighting device that was emitted from the first portion of luminescent material would, in the absence of any additional light, have a mixed illumination corresponding to a first point on a 1931 CIE Chromaticity Diagram, said first point having a first correlated color temperature or color temperature; if electricity is supplied to the second group of solid state light emitters to cause the second group of solid state light emitters to emit light, a portion of light emitted from the second group of solid state light emitters would excite at least some of the second portion of luminescent material, and a mixture of light exiting the lighting device that was emitted from the second group of solid state light emitters and light exiting the lighting device that was emitted from the second portion of luminescent material would, in the absence of any additional light, have a mixed illumination corresponding to a second point on a 1931 CIE Chromaticity Diagram, said second point having a second correlated color temperature or color temperature, said first correlated color temperature or color temperature differing from said second correlated color temperature or color temperature by at least 50 K. - View Dependent Claims (28, 29, 30, 31)
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Specification