ILLUMINATION DEVICE WITH HUE TRANSFORMATION
First Claim
1. A illumination device, comprising:
- a first light source emitting light of a first hue and a first intensity;
a second light source emitting light of a second hue and a second intensity;
a light-diffusing medium positioned adjacent said first light source and said second light source for receiving light emitted from said first light source and said second light source, said light-diffusing medium being composed of a light-transmitting material and a light color-converting material, said light color-converting material selected to convert said light of the first hue into a light of a third hue, and to pass said light of the second hue with substantially no conversion;
whereby said light-diffusing medium emits light of a perceived hue that is a combination of said light of the third hue and said light of the second hue; and
whereby said perceived hue is readily tuned by adjusting one or both of the first intensity of said first light source and the second intensity of said second light source.
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Accused Products
Abstract
An illumination device includes a first light source, a second light source, and a light-diffusing medium. The first light source emits light of a first hue, and the second light source emits light of a second hue. The light-diffusing medium receives light emitted from the first and second light sources. The light-diffusing medium is composed of a light-transmitting material and a light color-converting material. The light color-converting material is selected to convert the light of a first hue into a light of a third hue, and to pass the light of the second hue with substantially no conversion. The light-diffusing medium thus emits light of a perceived hue that is a combination of the light of the third hue and the light of the second hue. By adjusting the relative intensities of the light emitted by the first and second light sources, the perceived hue can be readily transformed or tuned.
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Citations
16 Claims
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1. A illumination device, comprising:
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a first light source emitting light of a first hue and a first intensity;
a second light source emitting light of a second hue and a second intensity;
a light-diffusing medium positioned adjacent said first light source and said second light source for receiving light emitted from said first light source and said second light source, said light-diffusing medium being composed of a light-transmitting material and a light color-converting material, said light color-converting material selected to convert said light of the first hue into a light of a third hue, and to pass said light of the second hue with substantially no conversion;
whereby said light-diffusing medium emits light of a perceived hue that is a combination of said light of the third hue and said light of the second hue; and
whereby said perceived hue is readily tuned by adjusting one or both of the first intensity of said first light source and the second intensity of said second light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A illumination device, comprising:
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a first light source emitting light of a first hue and a first intensity;
a second light source emitting light of a second hue and a second intensity;
a third light source emitting light of a fourth hue and a third intensity;
a light-diffusing medium positioned adjacent said light sources for receiving light emitted from said light sources, said light-diffusing medium being composed of a light-transmitting material and a light color-converting material, said light color-converting material selected to convert said light of the first hue into a light of a third hue, to pass said light of the second hue with substantially no conversion, and to convert said light of the fourth hue into a light of a fifth hue;
whereby said light-diffusing medium emits light of a perceived hue that is a combination of said light of the third hue, said light of the second hue, and said light of the fifth hue; and
whereby said perceived hue is readily tuned by adjusting one or more of the first intensity of said first light source, the second intensity of said second light source, and the third intensity of said third light source. - View Dependent Claims (13, 14, 15, 16)
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Specification