High efficiency lighting device including one or more saturated light emitters, and method of lighting
First Claim
Patent Images
1. A solid state lighting device comprising:
- at least one first light emitter that emits non-saturated non-white light of a first color point;
at least one second light emitter that emits saturated non-white light; and
a controller configured to control a ratio of the non-white light of the first color point emitted by the at least one first light emitter and the saturated non-white light emitted by the at least one second light emitter such that a combination of the non-white light of the first color point emitted by the at least one first light emitter and the saturated non-white light emitted by the at least one second light emitter is non-saturated, non-white light of a second color point, the first color point within one of a first area on a 1931 CIE Chromaticity Diagram and a second area on a 1931 CIE Chromaticity Diagram,the first area 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,the second area enclosed by sixth, seventh, eighth and ninth line segments, the sixth line segment connecting a sixth point to a seventh point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, and the ninth line segment connecting the ninth point to the sixth point, the sixth point having x, y coordinates of 0.57, 0.35, the seventh point having x, y coordinates of 0.62, 0.32, the eighth point having x, y coordinates of 0.37, 0.16, and the ninth point having x, y coordinates of 0.40, 0.23.
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Abstract
A solid state lighting device comprising at least one first light emitter that emits non-saturated non-white light of a first color point, at least one second light emitter that emits saturated non-white light, and a controller configured to control a ratio of light emitted by the first emitter(s) and by the second light emitter(s) to provide non-white light of a second color point. Also, a solid state lighting device comprising at least one first light emitter that emits light within a first area or a second area on a Chromaticity Diagram, and at least one second light emitter, wherein output light is non-white and has a second color point. Also, methods of providing non-white light.
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Citations
29 Claims
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1. A solid state lighting device comprising:
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at least one first light emitter that emits non-saturated non-white light of a first color point; at least one second light emitter that emits saturated non-white light; and a controller configured to control a ratio of the non-white light of the first color point emitted by the at least one first light emitter and the saturated non-white light emitted by the at least one second light emitter such that a combination of the non-white light of the first color point emitted by the at least one first light emitter and the saturated non-white light emitted by the at least one second light emitter is non-saturated, non-white light of a second color point, the first color point within one of a first area on a 1931 CIE Chromaticity Diagram and a second area on a 1931 CIE Chromaticity Diagram, the first area 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, the second area enclosed by sixth, seventh, eighth and ninth line segments, the sixth line segment connecting a sixth point to a seventh point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, and the ninth line segment connecting the ninth point to the sixth point, the sixth point having x, y coordinates of 0.57, 0.35, the seventh point having x, y coordinates of 0.62, 0.32, the eighth point having x, y coordinates of 0.37, 0.16, and the ninth point having x, y coordinates of 0.40, 0.23. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A solid state lighting device comprising:
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at least one first light emitter that emits light which, in an absence of any additional light, has x, y color coordinates which define a first color point which is within one of a first area on a 1931 CIE Chromaticity Diagram and a second area on a 1931 CIE Chromaticity Diagram; and at least one second light emitter, the at least one second light emitter comprising a second solid state light emitter, the first area being 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, the second area being enclosed by sixth, seventh, eighth and ninth line segments, the sixth line segment connecting a sixth point to a seventh point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, and the ninth line segment connecting the ninth point to the sixth point, the sixth point having x, y coordinates of 0.57, 0.35, the seventh point having x, y coordinates of 0.62, 0.32, the eighth point having x, y coordinates of 0.37, 0.16, and the ninth point having x, y coordinates of 0.40, 0.23, wherein; when the at least one first light emitter and the at least one second light emitter are illuminated, output light from the lighting device is non-white and has a second color point. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A method comprising:
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illuminating at least one first light emitter to emit light which, in an absence of any additional light, has x, y color coordinates which define a point which is within one of a first area on a 1931 CIE Chromaticity Diagram and a second area on a 1931 CIE Chromaticity Diagram; and illuminating at least one second light emitter, the at least one second light emitter comprising a second solid state light emitter, to provide output light from the lighting device, the output light having a non-white color point, the first area being 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, the second area being enclosed by sixth, seventh, eighth and ninth line segments, the sixth line segment connecting a sixth point to a seventh point, the seventh line segment connecting the seventh point to an eighth point, the eighth line segment connecting the eighth point to a ninth point, and the ninth line segment connecting the ninth point to the sixth point, the sixth point having x, y coordinates of 0.57, 0.35, the seventh point having x, y coordinates of 0.62, 0.32, the eighth point having x, y coordinates of 0.37, 0.16, and the ninth point having x, y coordinates of 0.40, 0.23. - View Dependent Claims (27, 28, 29)
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Specification