Series multi-group modular solid state lighting devices
First Claim
1. A solid state lighting device, comprising:
- a first group of semiconductor light emitting devices that produce a yellowish white light having x, y coordinates that define a point above the Planckian locus on a 1931 CIE Chromaticity Diagram;
said first group including at least one blue semiconductor light emitter, one reddish orange semiconductor light emitter, and at least one wavelength down-conversion layer on top of the blue semiconductor light emitter to excite a converted greenish yellow spectrum light;
a second group of semiconductor light emitting devices that includes at least one light emitting device that produces a reddish orange light; and
a third group of semiconductor light emitting devices including at least one wavelength down-converted white light device.
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Accused Products
Abstract
A solid state lighting device includes a first group of semiconductor light emitting devices that produces a yellowish white light, a second group of semiconductor light emitting devices that includes at least one light emitting device that produces a reddish orange light, and a third group of semiconductor light emitting devices that includes at least one wavelength down-converted white light device. A combination of the second and third groups produces a sub-mixture of reddish warm white light. A combination of the first, second and third groups produces a mixture of warm white light with a correlated color temperature between 2700k to 3500K and a color rendering index higher than 85.
9 Citations
11 Claims
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1. A solid state lighting device, comprising:
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a first group of semiconductor light emitting devices that produce a yellowish white light having x, y coordinates that define a point above the Planckian locus on a 1931 CIE Chromaticity Diagram; said first group including at least one blue semiconductor light emitter, one reddish orange semiconductor light emitter, and at least one wavelength down-conversion layer on top of the blue semiconductor light emitter to excite a converted greenish yellow spectrum light; a second group of semiconductor light emitting devices that includes at least one light emitting device that produces a reddish orange light; and a third group of semiconductor light emitting devices including at least one wavelength down-converted white light device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 11)
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8. A solid state lighting device, comprising:
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a first group of semiconductor light emitting devices that produce a yellowish white light having x, y coordinates that define a point above the Planckian locus on a 1931 CIE Chromaticity Diagram; said first group including at least one blue semiconductor light emitter, one reddish orange semiconductor light emitter, and at least one wavelength down-conversion layer on top of the blue semiconductor light emitter to excite a converted greenish yellow spectrum light; a second group of semiconductor light emitting devices that includes at least one light emitting device that produces a reddish orange light and one neutral white light emitter; a third group of semiconductor light emitting devices including at least one wavelength down-converted white light device; a combination of said second and third groups producing a sub-mixture of reddish warm white light having x, y color coordinates that define a point below the Planckian locus within an area enclosed by four (4) points having x, y coordinates of (0.47, 0.34), (0.53, 0.35), (0.52, 0.41), and (0.46, 0.385); and a combination of said first, second and third groups producing a mixture of warm white light with a correlated color temperature of 2700k and a color rendering index higher than 85, having x, y coordinates that define a point on the Planckian locus within 7-step MacAdam ellipses on a 1931 CIE Chromaticity Diagram when power is supplied to said combination in the absence of additional light.
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9. A solid state lighting device, comprising:
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a first group of semiconductor light emitting devices that produce a yellowish white light having x, y coordinates that define a point above the Planckian locus on a 1931 CIE Chromaticity Diagram; said first group including at least one blue semiconductor light emitter, one reddish orange semiconductor light emitter, and at least one wavelength down-conversion layer on top of the blue semiconductor light emitter to excite a converted greenish yellow spectrum light; a second group of semiconductor light emitting devices that includes at least one light emitting device that produces a reddish orange light and one cool white light emitter; a third group of semiconductor light emitting devices including at least one wavelength down-converted white light device; a combination of said second and third groups producing a sub-mixture of reddish warm white light having x, y color coordinates that define a point below the Planckian locus within an area enclosed by four (4) points having x, y coordinates of (0.42, 0.33), (0.47, 0.34), (0.46, 0.385), and (0.415, 0.37); and a combination of said first, second and third groups producing a mixture of warm white light with a correlated color temperature of 3000k and a color rendering index higher than 85, having x, y coordinates that define a point on the Planckian locus within 7-step MacAdam ellipses on a 1931 CIE Chromaticity Diagram when power is supplied to said combination in the absence of additional light.
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10. A solid state lighting device, comprising:
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a first group of semiconductor light emitting devices that produce a yellowish white light; said first group including at least one blue semiconductor light emitter, one reddish orange semiconductor light emitter, and at least one wavelength down-conversion layer on top of the blue semiconductor light emitter to excite a converted greenish yellow spectrum light having x, y coordinates that define a point above the Planckian locus on a 1931 CIE Chromaticity Diagram; a second group of semiconductor light emitting devices that includes at least one light emitting device that produces a reddish orange light and a plurality of cool white light emitters; a third group of semiconductor light emitting devices including at least one wavelength down-converted white light device; a combination of said second and third groups producing a sub-mixture of reddish warm white light having x, y color coordinates that define a point below the Planckian locus within an area enclosed by four (4) points having x, y coordinates of (0.37, 0.32), (0.42, 0.33), (0.415, 0.37), and (0.36, 0.35); and a combination of said first, second and third groups producing a mixture of warm white light with a correlated color temperature of 3500k and a color rendering index higher than 85, having x, y coordinates that define a point on the Planckian locus within 7-step MacAdam ellipses on a 1931 CIE Chromaticity Diagram when power is supplied to said combination in the absence of additional light.
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Specification