LED LIGHTING ARRANGEMENT INCLUDING LIGHT EMITTING PHOSPHOR AND METHOD OF MANUFACTURE
An optical component for an LED lighting arrangement comprises a transparent material having a surface and one or more photoluminescent (phosphor) materials deposited as a layer on the surface of the transparent material. The phosphor material layer can be deposited using a deposition approach including spraying, dropping, printing, painting, spin coating or tape casting. The phosphor material layer has a thickness in a range of 20 to 500 μm. The component can further comprising a light diffusing material which can be provided in a separate layer from the phosphor material layer or provided in the phosphor material layer. The light diffusing material can be deposited using a deposition approach including spraying, dropping, printing, painting, spin coating or tape casting.
1 . An optical component comprising:
a transparent material,
a surface of the transparent material; and
at least one photoluminescent material deposited as a layer on the surface of the transparent material using a deposition approach selected from the group consisting of: spraying; dropping; printing; painting; spin coating; and tape casting.
2 . The component of claim 1 , wherein the photoluminescent material layer has a thickness in a range of 20 to 500 μm.
3 . The component of claim 1 , wherein the transparent material has a concave surface and wherein the photoluminescent material layer is provided on at least a part of the concave surface.
4 . The component of claim 1 , wherein the transparent material has a convex surface and wherein the photoluminescent material layer is provided on at least a part of the convex surface.
5 . The component of claim 1 , wherein the transparent material comprises a substantially spherical shell and wherein the photoluminescent material layer is provided on at least a part of the inner or outer surfaces of the transparent material.
6 . The component of claim 1 , wherein the transparent material comprises a hollow cylinder and wherein the photoluminescent material layer is provided on at least a part of the inner or outer surfaces of the transparent material.
7 . The component of claim 1 , wherein the transparent material comprises a substantially hemispherical shell and wherein the photoluminescent material layer is provided on at least a part of the inner or outer surfaces of the transparent material.
8 . The component of claim 1 , wherein the component is selected from the group consisting of: a lens; an optical window; and a waveguide.
9 . The component of claim 1 , wherein the photoluminescent material layer comprises a mixture of a transparent material and the at least one photoluminescent material.
10 . The component of claim 9 , wherein the transparent material is selected from the group consisting of: an epoxy; a silicone; a polymer; and a glass.
11 . The component of claim 1 , and further comprising a light diffusing material.
12 . The component of claim 11 , wherein the light diffusing material is provided in a separate layer from the photoluminescent material layer.
13 . The component of claim 11 , wherein the light diffusing material is provided in the photoluminescent material layer.
14 . The component of claim 11 , wherein the light diffusing material is selected from the group consisting of: titanium dioxide; silica, alumina; and combinations thereof.
15 . The component of claim 11 , wherein the light diffusing material is deposited using a deposition approach selected from the group consisting of: spraying; dropping; printing; painting; spin coating; and tape casting.
16 . The component of claim 1 , wherein the at least one photoluminescent material is selected from the group consisting of: a YAG-based phosphor; a silicate-based phosphor; a nitride-based phosphor; a sulfate-based phosphor; and combinations thereof.
17 . An LED lighting arrangement comprising at least one LED and an optical component comprising a transparent material; a surface of the transparent material; and at least one photoluminescent material deposited as a layer on the surface of the transparent material using a deposition approach selected from the group consisting of: spraying; dropping; printing; painting; spin coating; and tape casting.
18 . The lighting arrangement of claim 17 , wherein the layer of the at least one photoluminescent material has a thickness in a range of 20 to 500 μm.
19 . The lighting arrangement of claim 17 , wherein the photoluminescent material layer is provided on at least a part of a surface of the transparent material selected from the group consisting of: a concave surface; a convex surface; a planar surface; and combinations thereof.
20 . The lighting arrangement of claim 17 , and further comprising a light diffusing material.
21 . The lighting arrangement of claim 20 , wherein the light diffusing material is provided in a separate layer from the photoluminescent material layer.
22 . The lighting arrangement of claim 20 , wherein the light diffusing material is provided in the photoluminescent material layer.
23 . The lighting arrangement of claim 20 , wherein the light diffusing material is selected from the group consisting of: titanium dioxide; silica, alumina; and combinations thereof.
24 . The lighting arrangement of claim 20 , wherein the light diffusing material is deposited using a deposition approach selected from the group consisting of: spraying; dropping; printing; painting; spin coating; and tape casting.
25 . The lighting arrangement of claim 17 , wherein the component is selected from the group consisting of: a lens; an optical window; and a waveguide.
26 . A method of fabricating an optical component comprising:
providing a transparent material having a surface; and
depositing at least one photoluminescent material as a layer on the surface of the transparent material using a deposition approach selected from the group consisting of: spraying; dropping; printing; painting; spin coating; and tape casting.
27 . The method of claim 26 , and comprising depositing the layer of the at least one photoluminescent material with a thickness in a range of 20 to 500 μm.
28 . The method of claim 25 , and further comprising depositing a light diffusing material.
29 . The method of claim 28 , and comprising depositing the light diffusing material in a separate layer from the photoluminescent material layer.
30 . The method of claim 26 , and comprising depositing the light diffusing material in a common layer with the at least one photoluminescent material.
31 . The method of claim 26 , and comprising depositing the light diffusing material using a deposition approach selected from the group consisting of: spraying; dropping; printing; painting; spin coating; and tape casting.