Multi-layer led phosphors
OwnerChris Lowery, Alex Shaikevitchinventors
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Abstract
An LED assembly can have a plurality of different types of phosphors that are separated from one another in a manner that substantially mitigates the cannibalization of light emitted by at least one of the types of phosphors. By mitigating the cannibalization of light, brighter and more efficient white light LED assemblies can be provided. Such LED assemblies can be suitable for use in such applications as flashlights, displays, and area lighting.
Claims20
An LED assembly comprising a plurality of different types of phosphors that are separated from one another in a manner that substantially mitigates cannibalization of light emitted by at least one of the types of phosphors.
A phosphor layer for an LED assembly comprising a plurality of different types of phosphors wherein the phosphors define adjacent dots that are configured so as to substantially inhibit phosphor absorption/emission band interaction.
An LED assembly comprising:
- an LED die;
- a first layer comprising a first phosphor;
- a second layer comprising a second phosphor;
- wherein the first phosphor and the second phosphor receive light from the die and the first phosphor and the second phosphor each emit a different color of light with respect to one another;
- and
- wherein the first phosphor and the second phosphor are arranged such that absorption of light by one that was emitted by the other is mitigated.
An illumination assembly comprising:
- a source of light;
- a first phosphor layer comprising a first phosphor that is configured to change a color of light from the source to a first color;
- a second phosphor layer comprising a second phosphor that is configured to change a color of light from the source to a second color;
- and
- wherein the first and second phosphors are configures such that light emitted by one is not substantially absorbed by the other.
A method for modifying the color of light, the method comprising providing the light to a plurality of different types of phosphors that are separated from one another in a manner that substantially mitigates cannibalization of light emitted by at least one of the types of phosphors.
A method for modifying the color of light, the method comprising depositing a plurality of different types of phosphors as adjacent dots that substantially inhibit phosphor absorption/emission band interaction.
Dependencies are inferred from the claim text.