Phosphor layer arrangement for use with light emitting diodes
View Patent ↗Phosphor layer arrangement for use with light emitting diodes. In an aspect, a light emitting diode apparatus is provided that includes a least one light emitting diode, an encapsulation covering the at least one light emitting diode, a lens having a phosphor layer formed upon a bottom surface, the lens positioned to cover at least part of the encapsulation, and an air gap between the phosphor layer and the encapsulation. In an aspect, a light emitting diode lamp is provided that includes a package, a least one light emitting diode, an encapsulation covering the at least one light emitting diode, a lens having a phosphor layer formed upon a bottom surface, wherein the lens is positioned to cover at least part of the encapsulation, and an air gap between the phosphor layer and the encapsulation.
1. A light emitting diode apparatus comprising:
at least one light emitting diode;
an encapsulation covering the at least one light emitting diode;
a stepped reflector that forms a boundary for the encapsulation wherein said stepped reflector comprises a wire bonding region;
a lens having a phosphor layer formed upon a bottom surface, the lens positioned to cover at least part of the encapsulation; and
an air gap between the phosphor layer and the encapsulation.
2. The apparatus of claim 1 , wherein said phosphor layer comprises an inorganic dye.
3. The apparatus of claim 1 , wherein said phosphor layer has a uniform thickness.
4. The apparatus of claim 1 , wherein said phosphor layer has a varying thickness.
5. The apparatus of claim 1 , wherein said phosphor layer has a thickness in the range of 5 to 500 microns.
6. The apparatus of claim 1 , wherein said air gap has a thickness in the range of 5 to 1000 microns.
7. A method for forming a light emitting diode apparatus, the method comprising:
encapsulating at least one light emitting diode with an encapsulation;
forming a stepped reflector as a boundary for the encapsulation wherein the stepped reflector comprises a wire bonding region;
covering the encapsulation with a lens having a phosphor layer formed upon a bottom surface, wherein an air gap is formed between the encapsulation and the phosphor layer.
8. The method of claim 7 , further comprising forming the phosphor layer with an inorganic dye.
9. The method of claim 7 , further comprising forming the phosphor layer to have a uniform thickness.
10. The method of claim 7 , further comprising forming the phosphor layer to have a varying thickness.
11. The method of claim 7 , further comprising forming the phosphor layer to have a thickness in the range of 5 to 500 microns.
12. The method of claim 7 , further comprising forming the air gap to have a thickness in the range of 5 to 1000 microns.