Solid-state lamps utilizing photoluminescence wavelength conversion components
First Claim
1. A photoluminescence wavelength conversion component comprising:
- a cylindrical light transmissive component comprising a plurality of latitudinally extending phosphor regions which are equally circumferentially spaced and have at least one photoluminescence material;
the cylindrical light transmissive component having first and second ends and a substantially constant cross section, wherein the first end is for receiving light; and
a light reflective surface provided over at least a part of the second end, wherein the light transmissive component comprises a solid component with a light transmissive core.
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Accused Products
Abstract
Disclosed are improved photoluminescence wavelength conversion components and lamps that incorporate such components. The photoluminescence wavelength conversion component comprises a hollow cylindrical tube having a given bore of diameter and an axial length. The relative dimensions and shape of the component can affect the radial emission pattern of the component and are configured to give a required emission pattern (typically omnidirectional). The photoluminescence material can be homogeneously distributed throughout the volume of the component during manufacture of the component. An extrusion method can be used to form the improved photoluminescence wavelength conversion component. Injection molding or casting can also be used to form the component. Another possible approach is to manufacture the component is by forming a flexible sheet material to include the phosphor and/or quantum dots, and then rolling the sheet material into the desired shape and dimensions for the component. The improved wavelength conversion components and lamps that incorporate these components provide for improved emission characteristic, while allowing for relatively cost-effective manufacturing costs. A further advantage of components is that their light emission resembles a filament of a conventional incandescent light bulb.
227 Citations
13 Claims
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1. A photoluminescence wavelength conversion component comprising:
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a cylindrical light transmissive component comprising a plurality of latitudinally extending phosphor regions which are equally circumferentially spaced and have at least one photoluminescence material; the cylindrical light transmissive component having first and second ends and a substantially constant cross section, wherein the first end is for receiving light; and a light reflective surface provided over at least a part of the second end, wherein the light transmissive component comprises a solid component with a light transmissive core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification