Illumination apparatus and methods of forming the same
First Claim
Patent Images
1. An illumination apparatus comprising:
- a waveguide having a first surface;
embedded within the waveguide, (i) a light-emitting source for emitting source light, and (ii) a photoluminescent material for converting some of the source light to a different wavelength, the converted source light mixing with unconverted source light to form output light spectrally different from both the converted source light and the unconverted source light,wherein output light is emitted from at least a portion of the first surface, and the photoluminescent material comprises at least one of nano-size phosphor particles or quantum dots.
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Abstract
In one aspect, an illumination apparatus includes a waveguide, embedded in which are a light-emitting source and a photoluminescent material. Output light is emitted from at least a portion of a first surface of the waveguide. The photoluminescent material includes nano-size phosphor particles and/or quantum dots.
341 Citations
37 Claims
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1. An illumination apparatus comprising:
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a waveguide having a first surface; embedded within the waveguide, (i) a light-emitting source for emitting source light, and (ii) a photoluminescent material for converting some of the source light to a different wavelength, the converted source light mixing with unconverted source light to form output light spectrally different from both the converted source light and the unconverted source light, wherein output light is emitted from at least a portion of the first surface, and the photoluminescent material comprises at least one of nano-size phosphor particles or quantum dots. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An illumination apparatus comprising:
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a waveguide having a first surface; embedded within the waveguide, a light-emitting source for emitting source light; disposed on the first surface of the waveguide, a layer of phosphor-encapsulating material; and disposed within the layer of phosphor-encapsulating material, a photoluminescent material for converting some of the source light to a different wavelength, the converted source light mixing with unconverted source light to form output light spectrally different from both the converted source light and the unconverted source light, wherein source light is emitted from at least a portion of the first surface of the waveguide and output light is emitted from at least a portion of the layer of phosphor-encapsulating material. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An illumination apparatus comprising:
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a waveguide having a first surface; embedded within the waveguide, a plurality of light-emitting sources, each light-emitting source emitting a different source light; and disposed proximate the first surface, a photoluminescent material for converting some of the source light of one of the light-emitting sources to a different wavelength, the converted source light mixing with unconverted source light to form output light spectrally different from both the converted source light and the unconverted source light, wherein the output light is emitted from at least a portion of the first surface and has a CRI value greater than approximately 70. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A plurality of illumination apparatuses comprising:
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a first illumination apparatus comprising; a first light-emitting source emitting source light having a first wavelength, and a first layer comprising a photoluminescent material for converting some of the source light to a different wavelength, the converted source light mixing with unconverted source light to form output light spectrally different from both the converted source light and the unconverted source light; and a second illumination apparatus comprising; a second light-emitting source emitting source light having a second wavelength differing from the first wavelength by at least approximately 5 nm, and a second layer comprising the photoluminescent material, wherein the color coordinates of the first and second illumination apparatuses differ by no more than approximately 5%. - View Dependent Claims (30, 31)
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32. A method of forming an illumination apparatus, the method comprising:
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embedding a light-emitting source within a waveguide; and embedding a photoluminescent material within the waveguide, the photoluminescent material comprising at least one of nano-size phosphor particles or quantum dots. - View Dependent Claims (33, 34)
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35. A method of forming an illumination apparatus, the method comprising:
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embedding a light-emitting source within a waveguide; and disposing a layer comprising a photoluminescent material above a first surface of the waveguide, wherein the layer is in mechanical contact but not optical contact with the waveguide. - View Dependent Claims (36, 37)
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Specification