Wavelength conversion component with scattering particles
First Claim
1. A wavelength conversion component for a light emitting device comprising:
- at least one photoluminescence material; and
a light scattering material, wherein the light scattering material has an average particle size that is selected such that the light scattering material will scatter excitation light from a radiation source relatively more than the light scattering material will scatter light generated by the at least one photoluminescence material,wherein the wavelength conversion component is configured such that in operation a portion of the excitation light comprising blue light having a wavelength of greater than or equal to 440 nm is emitted through the wavelength conversion component to contribute to a final visible emission product;
wherein the light scattering material scatters the blue light at least twice as much as light generated by the at least one photoluminescence material.
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Accused Products
Abstract
A light emitting device comprises at least one solid-state light source (LED) operable to generate excitation light and a wavelength conversion component located remotely to the at least one source and operable to convert at least a portion of the excitation light to light of a different wavelength. The wavelength conversion component has at least one photoluminescence material and a light scattering material, where the light scattering material has an average particle size that is selected such that the light scattering material will scatter excitation light from a radiation source relatively more than the light scattering material will scatter light generated by the photoluminescence material.
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Citations
28 Claims
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1. A wavelength conversion component for a light emitting device comprising:
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at least one photoluminescence material; and a light scattering material, wherein the light scattering material has an average particle size that is selected such that the light scattering material will scatter excitation light from a radiation source relatively more than the light scattering material will scatter light generated by the at least one photoluminescence material, wherein the wavelength conversion component is configured such that in operation a portion of the excitation light comprising blue light having a wavelength of greater than or equal to 440 nm is emitted through the wavelength conversion component to contribute to a final visible emission product; wherein the light scattering material scatters the blue light at least twice as much as light generated by the at least one photoluminescence material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A light emitting device, comprising:
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at least one solid-state light emitter operable to generate excitation light; and a wavelength conversion component comprising; at least one photoluminescence material; and a light scattering material, wherein the light scattering material has an average particle size that is selected such that the light scattering material will scatter excitation light from the at least one solid-state light emitter relatively more than the light scattering material will scatter light generated by the at least one photoluminescence material, wherein the wavelength conversion component is configured such that in operation a portion of the excitation light comprising blue light having a wavelength of greater than or equal to 440 nm is emitted through the wavelength conversion component to contribute to a final visible emission product; wherein the light scattering material scatters the blue light at least twice as much as light generated by the at least one photoluminescence material. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A linear lamp comprising:
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an elongate housing; a plurality of solid-state light emitters housed within the housing and configured along the length of the housing; and an elongate wavelength conversion component remote to the plurality of solid-state light emitters and configured to in part at least define a light mixing chamber, wherein the elongate wavelength conversion component comprises at least one photoluminescence material; and a light scattering material, wherein the light scattering material has an average particle size that is selected such that the light scattering material will scatter excitation light from the plurality of solid-state light emitters relatively more than the light scattering material will scatter light generated by the at least one photoluminescence material, wherein the wavelength conversion component is configured such that in operation a portion of the excitation light comprising blue light having a wavelength of greater than or equal to 440 nm is emitted through the wavelength conversion component to contribute to a final visible emission product; wherein the light scattering material scatters the blue light at least twice as much as light generated by the at least one photoluminescence material.
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27. A downlight comprising:
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a body comprising one or more solid-state light emitters, wherein the body is configured to be positioned within a downlighting fixture such that the downlight emits light in a downward direction; and a wavelength conversion component remote to the one or more solid-state light emitters and configured to in part at least define a light mixing chamber, wherein the wavelength conversion component comprises at least one photoluminescence material; and a light scattering material, wherein the light scattering material has an average particle size that is selected such that the light scattering material will scatter excitation light from the one or more solid-state light emitters relatively more than the light scattering material will scatter light generated by the at least one photoluminescence material, wherein the wavelength conversion component is configured such that in operation a portion of the excitation light comprising blue light having a wavelength of greater than or equal to 440 nm is emitted through the wavelength conversion component to contribute to a final visible emission product; wherein the light scattering material scatters the blue light at least twice as much as light generated by the at least one photoluminescence material.
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28. A light bulb comprising:
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a connector base configured to be inserted in a socket to form an electrical connection for the light bulb; a body comprising one or more solid-state light emitters; a wavelength conversion component having a three dimensional shape that is configured to enclose the one or more solid-state light emitters and to in part at least define a light mixing chamber, wherein the wavelength conversion component comprises at least one photoluminescence material; and a light scattering material, wherein the light scattering material has an average particle size that is selected such that the light scattering material will scatter excitation light from the one or more solid-state light emitters relatively more than the light scattering material will scatter light generated by the at least one photoluminescence material, wherein the wavelength conversion component is configured such that in operation a portion of the excitation light comprising blue light having a wavelength of greater than or equal to 440 nm is emitted through the wavelength conversion component to contribute to a final visible emission product; wherein the light scattering material scatters the blue light at least twice as much as light generated by the at least one photoluminescence material.
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Specification