COLOR TEMPERATURE ADJUSTING METHOD OF SOLID STATE LIGHT EMITTING DEVICE AND SOLID STATE LIGHT EMITTING DEVICE USING THE METHOD
First Claim
1. A color temperature adjusting method of solid state light emitting device, comprising:
- providing a main light source which emits main light of a first color temperature;
providing an adjusting light source, wherein the adjusting light source comprises a plurality of red light sources, a plurality of green light sources and a plurality of blue light sources which alternately surround the main light source; and
adjusting currents applied to each of the red, green and blue light sources of the adjusting light source to obtain an adjusting light, the adjusting light mixing with the main light of the main light source to obtain an outgoing light of a second color temperature;
wherein the second color temperature is different from the first color temperature and wherein a chromaticity coordinate of the outgoing light is at a Plank'"'"'s curve on a CIE 1931 chromaticity coordinates chart.
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Abstract
A color temperature adjusting method of solid state light emitting device, including steps: providing a main light source which emits main light of a first color temperature; providing an adjusting light source, wherein the adjusting light source comprises a red light source, a green light source and a blue light source; and adjusting currents applied to the adjusting light sources to obtain an adjusting light, wherein the adjusting light mixes with the main light of the main light source to obtain an outgoing light of a second color temperature. The second color temperature is different from the first color temperature. The outgoing light has a chromaticity coordinate at a Plank'"'"'s curve on a CIE 1931 chromaticity coordinates chart.
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Citations
15 Claims
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1. A color temperature adjusting method of solid state light emitting device, comprising:
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providing a main light source which emits main light of a first color temperature; providing an adjusting light source, wherein the adjusting light source comprises a plurality of red light sources, a plurality of green light sources and a plurality of blue light sources which alternately surround the main light source; and adjusting currents applied to each of the red, green and blue light sources of the adjusting light source to obtain an adjusting light, the adjusting light mixing with the main light of the main light source to obtain an outgoing light of a second color temperature; wherein the second color temperature is different from the first color temperature and wherein a chromaticity coordinate of the outgoing light is at a Plank'"'"'s curve on a CIE 1931 chromaticity coordinates chart. - View Dependent Claims (2, 3, 4)
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5. A color temperature adjusting method of solid state light emitting device comprising:
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providing a main light sources consisting of at least two sub-main light sources emitting lights of different color temperatures; adjusting currents applied to the at least two sub-main light sources to obtain a mixed emitting light; and providing an adjusting light source comprising a red light source, a green light source and a blue light source; adjusting current each of the red light source, the green light source and the blue light source to obtain a mixed adjusting light, the adjusting light mixing with the mixed emitting light to obtain an outgoing light; wherein the outgoing light has a color temperature different from a color temperature of the mixed emitting light and wherein a chromaticity coordinate of the outgoing light is at a Plank'"'"'s curve on a CIE 1931 chromaticity coordinates chart. - View Dependent Claims (6, 7, 8, 9, 10)
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11. An illuminating device, comprising:
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a main light source; and a plurality of red light sources; a plurality of blue light sources; and a plurality of green light sources; wherein the main light source is set in a middle of the illuminating device, and the red, blue and green light sources alternately surround the main light source; and wherein current applied to each the red, blue and green light sources is changeable to change color temperature of light from the main light source by mixing light of the red, blue, green light sources with the light from the main light source, the light from the main light source and the light from the red, blue and green light sources being mixed together to obtain an outgoing light of the illuminating device which has a chromaticity coordinate located at a Plank'"'"'s curve on a CIE 1931 chromaticity coordinates chart. - View Dependent Claims (12, 13, 14, 15)
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Specification