High efficiency lighting device including one or more solid state light emitters, and method of lighting
First Claim
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1. A lighting device comprising:
- a plurality of light sources and at least a first group of solid state light emitters, each of the light sources comprising at least one of a second group of solid state light emitters,at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a first string,at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a second string,the first string electrically parallel to the second string,each light source, when illuminated, emits light which, in an absence of any additional light, has x, y color coordinates which define a point which is within a first area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38,each of the first group of light emitters, when illuminated, emitting light having a dominant emission wavelength in the range of from about 602 nm to about 615 nm, wherein;
a first ratio differs from a second ratio,said first ratio equal to (1) a number of solid state light emitters in said second group of solid state light emitters and in said first string, divided by (2) a number of solid state light emitters in said first group of solid state light emitters and in said first string;
said second ratio equal to (3) a number of solid state light emitters in said second group of solid state light emitters and in said second string, divided by (4) a number of solid state light emitters in said first group of solid state light emitters and in said second string.
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Abstract
There is provided a lighting device that comprises at least one 600-630 nm solid state light emitter and at least one light source emitting light within an area on a 1931 CIE Chromaticity Diagram defined by a first set of points having x, y coordinates of (0.32, 0.40), (0.36, 0.48), (0.43, 0.45), (0.42, 0.42), (0.36, 0.38), or a second set of points having x, y coordinates of (0.29, 0.36), (0.32, 0.35), (0.41, 0.43), (0.44, 0.49), (0.38, 0.53). Some embodiments further comprise at least a first power line. Also provided are methods that comprise illuminating at least one light source to emit light within one of the areas defined above, and illuminating at least one 600-630 nm emitter.
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Citations
52 Claims
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1. A lighting device comprising:
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a plurality of light sources and at least a first group of solid state light emitters, each of the light sources comprising at least one of a second group of solid state light emitters, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a first string, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a second string, the first string electrically parallel to the second string, each light source, when illuminated, emits light which, in an absence of any additional light, has x, y color coordinates which define a point which is within a first area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38, each of the first group of light emitters, when illuminated, emitting light having a dominant emission wavelength in the range of from about 602 nm to about 615 nm, wherein; a first ratio differs from a second ratio, said first ratio equal to (1) a number of solid state light emitters in said second group of solid state light emitters and in said first string, divided by (2) a number of solid state light emitters in said first group of solid state light emitters and in said first string; said second ratio equal to (3) a number of solid state light emitters in said second group of solid state light emitters and in said second string, divided by (4) a number of solid state light emitters in said first group of solid state light emitters and in said second string. - 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)
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25. A lighting device comprising:
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a plurality of light sources and at least a first group of solid state light emitters, each of the light sources comprising at least one of a second group of solid state light emitters, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a first string, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a second string, the first string electrically parallel to the second string, each light source, when illuminated, emits light which, in an absence of any additional light, has x, y color coordinates which define a point which is within a second area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.29, 0.36, the second point having x, y coordinates of 0.32, 0.35, the third point having x, y coordinates of 0.41, 0.43, the fourth point having x, y coordinates of 0.44, 0.49, and the fifth point having x, y coordinates of 0.38, 0.53, each of the first group of light emitters, when illuminated, emits light having a dominant emission wavelength in the range of from about 600 nm to about 630 nm, wherein; a first ratio differs from a second ratio, said first ratio equal to (1) a number of solid state light emitters in said second group of solid state light emitters and in said first string, divided by (2) a number of solid state light emitters in said first group of solid state light emitters and in said first string; said second ratio equal to (3) a number of solid state light emitters in said second group of solid state light emitters and in said second string, divided by (4) a number of solid state light emitters in said first group of solid state light emitters and in said second string. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A lighting device comprising:
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a plurality of light sources and at least a first group of solid state light emitters, each of the light sources comprising at least one of a second group of solid state light emitters, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a first string, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a second string, the first string electrically parallel to the second string, each light source, when illuminated, emits light which, in an absence of any additional light, has x, y color coordinates which define a point which is within a first area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38; each of the first group of light emitters, when illuminated, emitting light having a dominant emission wavelength in the range of from about 602 nm to about 615 nm; and at least a first power line, each of the plurality of light sources and each of the first group of solid state light emitters electrically connected to the first power line, the first and second strings electrically parallel to each other and in series relative to the first power line, wherein; a first ratio differs from a second ratio, said first ratio equal to (1) a number of solid state light emitters in said second group of solid state light emitters and in said first string, divided by (2) a number of solid state light emitters in said first group of solid state light emitters and in said first string; said second ratio equal to (3) a number of solid state light emitters in said second group of solid state light emitters and in said second string, divided by (4) a number of solid state light emitters in said first group of solid state light emitters and in said second string, and if current is supplied to the first power line, a combination of (1) light exiting the lighting device which was emitted by the plurality of light sources and (2) light exiting the lighting device which was emitted by the first group of solid state light emitters would, in an absence of any additional light, produce a mixed illumination which defines a point which is within 10 MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (42)
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43. A lighting device comprising:
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a plurality of light sources and at least a first group of solid state light emitters, each of the light sources comprising at least one of a second group of solid state light emitters, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a first string, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a second string, the first string electrically parallel to the second string, each light source, when illuminated, emits light which, in an absence of any additional light, has x, y color coordinates which define a point which is within a second area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.29, 0.36, the second point having x, y coordinates of 0.32, 0.35, the third point having x, y coordinates of 0.41, 0.43, the fourth point having x, y coordinates of 0.44, 0.49, and the fifth point having x, y coordinates of 0.38, 0.53; each of the first group of light emitters, when illuminated, emitting light having a dominant emission wavelength in the range of from about 600 nm to about 630 nm; and at least a first power line, each of the plurality of light sources and each of the first group of solid state light emitters electrically connected to the first power line, the first and second strings electrically parallel to each other and in series relative to the first power line, wherein; a first ratio differs from a second ratio, said first ratio equal to (1) a number of solid state light emitters in said second group of solid state light emitters and in said first string, divided by (2) a number of solid state light emitters in said first group of solid state light emitters and in said first string; said second ratio equal to (3) a number of solid state light emitters in said second group of solid state light emitters and in said second string, divided by (4) a number of solid state light emitters in said first group of solid state light emitters and in said second string, and if current is supplied to the first power line, a combination of (1) light exiting the lighting device which was emitted by the plurality of light sources and (2) light exiting the lighting device which was emitted by the first group of solid state light emitters would, in an absence of any additional light, produce a mixed illumination which defines a point which is within 10 MacAdam ellipses of at least one point on the blackbody locus on a 1931 CIE Chromaticity Diagram. - View Dependent Claims (44)
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45. A method comprising:
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illuminating a plurality of light sources to emit light which, in an absence of any additional light, has x, y color coordinates which define a point which is within a first area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.32, 0.40, the second point having x, y coordinates of 0.36, 0.48, the third point having x, y coordinates of 0.43, 0.45, the fourth point having x, y coordinates of 0.42, 0.42, and the fifth point having x, y coordinates of 0.36, 0.38; and illuminating a first group of solid state light emitters, the first group of solid state light emitters comprising at least one solid state light emitter, to emit light having a wavelength in the range of from about 602 nm to about 615 nm, each said light source comprising at least one of a second group of solid state light emitters, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a first string, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a second string, the first string electrically parallel to the second string, a first ratio differing from a second ratio, said first ratio equal to (1) a number of solid state light emitters in said second group of solid state light emitters and in said first string, divided by (2) a number of solid state light emitters in said first group of solid state light emitters and in said first string; said second ratio equal to (3) a number of solid state light emitters in said second group of solid state light emitters and in said second string, divided by (4) a number of solid state light emitters in said first group of solid state light emitters and in said second string. - View Dependent Claims (46, 47, 48)
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49. A method comprising:
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illuminating a plurality of light sources to emit light which, in an absence of any additional light, has x, y color coordinates which define a point which is within a second area on a 1931 CIE Chromaticity Diagram enclosed by first, second, third, fourth and fifth line segments, the first line segment connecting a first point to a second point, the second line segment connecting the second point to a third point, the third line segment connecting the third point to a fourth point, the fourth line segment connecting the fourth point to a fifth point, and the fifth line segment connecting the fifth point to the first point, the first point having x, y coordinates of 0.29, 0.36, the second point having x, y coordinates of 0.32, 0.35, the third point having x, y coordinates of 0.41, 0.43, the fourth point having x, y coordinates of 0.44, 0.49, and the fifth point having x, y coordinates of 0.38, 0.53; and illuminating a first group of solid state light emitters, the first group of solid state light emitters comprising at least one solid state light emitter, to emit light having a wavelength in the range of from about 600 nm to about 630 nm, each said light source comprising at least one of a second group of solid state light emitters, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a first string, at least one of the first group of solid state light emitters and at least one of the second group of solid state light emitters on a second string, the first string electrically parallel to the second string, a first ratio differing from a second ratio, said first ratio equal to (1) a number of solid state light emitters in said second group of solid state light emitters and in said first string, divided by (2) a number of solid state light emitters in said first group of solid state light emitters and in said first sting; said second ratio equal to (3) a number of solid state light emitters in said second group of solid state light emitters and in said second string, divided by (4) a number of solid state light emitters in said first group of solid state light emitters and in said second string. - View Dependent Claims (50, 51, 52)
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Specification