LED cross-linkable phosphor coating
AssigneeGeneral Electric Company
InventorsJacob C. Bortscheller, Robert J. Wojnarowski
Life of this patent
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Abstract
A light source (10) includes a light emitting component (32), such as a UV/blue light emitting diode or laser diode coated with a layer (60) of a phosphor material (64). The phosphor material converts a portion of the light emitted by the light emitting component to light of a longer wavelength, such as yellow light. The thickness d of the layer varies across the light emitting component in relation to the intensity of light emitted by the light emitting component. This maintains a uniform color of the emission from the light source while minimizing the loss in light intensity (brightness) due to the presence of the phosphor.
Claims18
1-17. (Cancelled)
A method of improving color distribution of a light source emission, the method comprising:
- forming a layer of a phosphor-containing curable material on a light emitting component;
- energizing the light emitting component for a sufficient period of time to cure a portion of the curable material;
- and
- removing remaining uncured curable material.
A method of forming a light source, the method comprising:
- applying a phosphor-containing curable material to a light emitting component;
- energizing the light emitting component for a sufficient period of time to cure a portion of the phosphor-containing curable material;
- and
- after the step of energizing the light emitting material, removing uncured curable material to provide a cured material with a thickness which varies across the light emitting component.
Dependencies are inferred from the claim text.