Lighting device and method of making
First Claim
1. A lighting device comprising:
- a first group of non-white light sources, the non-white light sources, when illuminated, emitting light having u′
, v′
color coordinates which define a point which is (1) outside a first area on a 1976 CIE Chromaticity Diagram which is bounded by a first white-light boundary curve which is 0.01 u′
v′
above the planckian blackbody locus and a second white-light boundary curve which is 0.01 u′
v′
below the planckian blackbody locus, and line segments connecting respective left and right ends of the first white-light boundary curve and of the second white-light boundary curve, and (2) within a second area on a 1976 CIE Chromaticity Diagram which is enclosed by a first saturated light curve extending along all points representing saturated light having wavelength in the range of from about 390 nm to about 500 nm, a line segment extending from a point representing saturated light having wavelength of about 500 nm to a point representing saturated light having wavelength of about 560 nm, a second saturated light curve extending along all points representing saturated light having wavelength in the range of from about 560 nm to about 580 nm, and a line segment extending from a point representing saturated light having wavelength of about 580 nm to a point representing saturated light having wavelength of about 390 nm; and
at least one supplemental light emitter having a dominant emission wavelength in the range of from about 600 nm to about 640 nm,the first group of non-white light sources comprising (1) at least a first phosphor converted solid state light emitter that comprises a first excitation source that emits light having a first dominant wavelength, and (2) at least a second phosphor converted solid state light emitter that comprises a second excitation source that emits light having a second dominant wavelength, the first dominant wavelength differing from the second dominant wavelength by at least 5 nm.
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Accused Products
Abstract
A lighting device comprising first and second groups of non-white light sources emitting light outside a first area on a 1976 CIE Chromaticity Diagram bounded by a curves 0.01 u′v′ above and below the blackbody locus and within a second area enclosed by saturated light curves from 430 to 465 nm and from 560 to 580 nm and segments from 465 to 560 nm and from 580 to 430 nm and a supplemental light emitter in the range of 600 to 640 nm. Also, a lighting device, comprising a first string of non-white phosphor converted light sources with excitation sources having dominant wavelengths that differ by at least 5 nm, a second string of non-white light sources, and a third string of supplemental light emitters in the range of 600 to 640 nm.
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Citations
23 Claims
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1. A lighting device comprising:
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a first group of non-white light sources, the non-white light sources, when illuminated, emitting light having u′
, v′
color coordinates which define a point which is (1) outside a first area on a 1976 CIE Chromaticity Diagram which is bounded by a first white-light boundary curve which is 0.01 u′
v′
above the planckian blackbody locus and a second white-light boundary curve which is 0.01 u′
v′
below the planckian blackbody locus, and line segments connecting respective left and right ends of the first white-light boundary curve and of the second white-light boundary curve, and (2) within a second area on a 1976 CIE Chromaticity Diagram which is enclosed by a first saturated light curve extending along all points representing saturated light having wavelength in the range of from about 390 nm to about 500 nm, a line segment extending from a point representing saturated light having wavelength of about 500 nm to a point representing saturated light having wavelength of about 560 nm, a second saturated light curve extending along all points representing saturated light having wavelength in the range of from about 560 nm to about 580 nm, and a line segment extending from a point representing saturated light having wavelength of about 580 nm to a point representing saturated light having wavelength of about 390 nm; andat least one supplemental light emitter having a dominant emission wavelength in the range of from about 600 nm to about 640 nm, the first group of non-white light sources comprising (1) at least a first phosphor converted solid state light emitter that comprises a first excitation source that emits light having a first dominant wavelength, and (2) at least a second phosphor converted solid state light emitter that comprises a second excitation source that emits light having a second dominant wavelength, the first dominant wavelength differing from the second dominant wavelength by at least 5 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A lighting device, comprising:
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a first group of non-white light sources, the non-white light sources, when illuminated, emitting light having u′
, v′
color coordinates which define a point which is (1) outside a first area on a 1976 CIE Chromaticity Diagram which is bounded by a first white-light boundary curve which is 0.01 u′
v′
above the planckian blackbody locus and a second white-light boundary curve which is 0.01 u′
v′
below the planckian blackbody locus and (2) within a second area on a 1976 CIE Chromaticity Diagram which is enclosed by a first saturated light curve extending along all points representing saturated light having wavelength in the range of from about 390 nm to about 500 nm, a line segment extending from a point representing saturated light having wavelength of about 500 nm to a point representing saturated light having wavelength of about 560 nm, a second saturated light curve extending along all points representing saturated light having wavelength in the range of from about 560 nm to about 580 nm, and a line segment extending from a point representing saturated light having wavelength of about 580 nm to a point representing saturated light having wavelength of about 390 nm;at least one supplemental light emitter having a dominant emission wavelength in the range of from about 600 nm to about 640 nm, and means for generating light which mixes with light emitted by the first group of non-white light sources and light emitted by the at least one supplemental light emitter to produce mixed light that has a color point which is within 0.01 u′
v′
of at least one point on the blackbody locus on a 1976 CIE Chromaticity Diagram,the first group of non-white light sources comprising (1) at least a first phosphor converted solid state light emitter that comprises a first excitation source that emits light having a first dominant wavelength, and (2) at least a second phosphor converted solid state light emitter that comprises a second excitation source that emits light having a second dominant wavelength, the first dominant wavelength differing from the second dominant wavelength by at least 5 nm. - View Dependent Claims (11)
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12. A method of lighting, comprising:
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supplying electricity to a first group of non-white light sources to cause the first group of non-white light sources to emit light having u′
, v′
color coordinates which define a point which is (1) outside a first area on a 1976 CIE Chromaticity Diagram which is bounded by a first white-light boundary curve which is 0.01 u′
v′
above the planckian blackbody locus and a second white-light boundary curve which is 0.01 u′
v′
below the planckian blackbody locus and (2) within a second area on a 1976 CIE Chromaticity Diagram which is enclosed by a first saturated light curve extending along all points representing saturated light having wavelength in the range of from about 390 nm to about 500 rim, a line segment extending from a point representing saturated light having wavelength of about 500 nm to a point representing saturated light having wavelength of about 560 nm, a second saturated light curve extending along all points representing saturated light having wavelength in the range of from about 560 nm to about 580 nm, and a line segment extending from a point representing saturated light having wavelength of about 580 nm to a point representing saturated light having wavelength of about 390 nm; andsupplying electricity to at least one supplemental light emitter to cause the at least one supplemental light emitter emit light having a dominant emission wavelength in the range of from about 600 nm to about 640 nm, the first group of non-white light sources comprising (1) at least a first phosphor converted solid state light emitter that comprises a first excitation source that emits light having a first dominant wavelength, and (2) at least a second phosphor converted solid state light emitter that comprises a second excitation source that emits light having a second dominant wavelength, the first dominant wavelength differing from the second dominant wavelength by at least 5 nm. - View Dependent Claims (13, 14)
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15. A lighting device comprising:
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a first group of non-white light sources, the non-white light sources, when illuminated, emitting light having u′
, v′
color coordinates which define a point which is (1) outside a first area on a 1976 CIE Chromaticity Diagram which is bounded by a first white-light boundary curve which is 0.01 u′
v′
above the planckian blackbody locus and a second white-light boundary curve which is 0.01 u′
v′
below the planckian blackbody locus, and line segments connecting respective left and right ends of the first white-light boundary curve and of the second white-light boundary curve, and (2) within a second area on a 1976 CIE Chromaticity Diagram which is enclosed by a first saturated light curve extending along all points representing saturated light having wavelength in the range of from about 390 nm to about 500 nm, a line segment extending from a point representing saturated light having wavelength of about 500 nm to a point representing saturated light having wavelength of about 560 nm, a second saturated light curve extending along all points representing saturated light having wavelength in the range of from about 560 nm to about 580 nm, and a line segment extending from a point representing saturated light having wavelength of about 580 nm to a point representing saturated light having wavelength of about 390 nm; andat least one supplemental light emitter having a dominant emission wavelength in the range of from about 600 nm to about 640 nm, the first group of non-white light sources comprising (1) at least a first phosphor light emitting diode comprising a light emitting diode having a dominant wavelength in the range of from about 430 nm to about 480 nm; and
(2) at least a second phosphor light emitting diode comprising a light emitting diode having a dominant wavelength in the range of from about 450 nm to about 500 nm.
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16. A lighting device comprising:
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a first group of non-white light sources, the non-white light sources, when illuminated, emitting light having u′
, v′
color coordinates which define a point which is (1) outside a first area on a 1976 CIE Chromaticity Diagram which is bounded by a first white-light boundary curve which is 0.01 u′
v′
above the planckian blackbody locus and a second white-light boundary curve which is 0.01 u′
v′
below the planckian blackbody locus, and line segments connecting respective left and right ends of the first white-light boundary curve and of the second white-light boundary curve, and (2) within a second area on a 1976 CIE Chromaticity Diagram which is enclosed by a first saturated light curve extending along all points representing saturated light having wavelength in the range of from about 390 nm to about 500 nm, a line segment extending from a point representing saturated light having wavelength of about 500 nm to a point representing saturated light having wavelength of about 560 nm, a second saturated light curve extending along all points representing saturated light having wavelength in the range of from about 560 nm to about 580 nm, and a line segment extending from a point representing saturated light having wavelength of about 580 nm to a point representing saturated light having wavelength of about 390 nm; andat least one supplemental light emitter having a dominant emission wavelength in the range of from about 600 nm to about 640 nm, the first group of non-white light sources comprising at least a first sub-group of non-white light sources and a second sub-group of non-white light sources, the first sub-group of non-white light sources, when illuminated, emitting light having u′
, v′
color coordinates which define a point which is (1) outside the first area, and (2) within the second area;the second sub-group of non-white light sources, when illuminated, emitting light having u′
, v′
color coordinates which define a point which is (1) outside the first area, and (2) within the second area;the first sub-group comprising at least a first excitation source that emits light having a first dominant wavelength, the second sub-group comprising a single illuminator having a second dominant wavelength, the first dominant wavelength differing from the second dominant wavelength by at least 5 nm. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification