UV Reflecting materials for LED lamps using UV-emitting diodes
First Claim
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1. A light source comprising:
- a. a light emitting component comprised of a semiconductor material, b. at least one phosphor material, and c. at least one UV reflecting material.
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Abstract
A light source comprising a light emitting component comprised of a semiconductor material, at least one phosphor material, at least one UV reflecting material, and optionally, at least one silicone layer and at least one encapsulant, is provided. This light source provides safety to the user against UV exposure and protection to other components within the device that may degrade upon exposure to UV radiation. Furthermore, the UV reflecting material reflects unconverted UV light back into the phosphor layer where it is converted to visible light, resulting in increased output from the light source.
69 Citations
20 Claims
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1. A light source comprising:
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a. a light emitting component comprised of a semiconductor material, b. at least one phosphor material, and c. at least one UV reflecting material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A white light emitting device comprising:
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a. a light emitting diode, b. at least one phosphor containing layer, c. at least one UV reflecting material containing layer, and d. at least one encapsulant layer, said UV reflecting material containing layer disposed outwardly from said phosphor containing layer.
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20. A light emitting device comprising:
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a. an LED of the formula InIGaJAlKN, wherein I, J, and K are each greater than or equal to zero, and I+J+K=1, b. a phosphor layer, and c. an encapsulant layer and/or a UV reflecting layer, said encapsulant layer including a UV reflecting material.
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Specification