Phosphor wheel and image projection device comprising the same
AssigneeLG Electronics Inc.
InventorsGunyoung HONG, Younggil YOO, Minsung KIM, Kyungpil KIM, Bokyung KANG, Seungmi BAEK
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Abstract
An image projection device and an image projection device comprising the same are disclosed. A phosphor wheel according to an embodiment of the present disclosure comprises a substrate, a reflective light-emission layer disposed on the substrate, and a phosphor layer disposed on the reflective light-emission layer, wherein the reflective light-emission layer includes resin and a phosphor having a higher heat conductivity than that of the resin. Accordingly, high-efficiency light output and color purity improvement are possible.
Claims19
A phosphor wheel comprising:
- a substrate;
- a reflective luminous layer disposed on the substrate;
- and
- a phosphor layer disposed on the reflective luminous layer,
- wherein the reflective luminous layer comprises:
- a resin;
- and
- a phosphor having a higher thermal conductivity than the resin.
A phosphor wheel comprising:
- a substrate;
- a reflective luminous layer disposed on the substrate;
- and
- a phosphor layer disposed on the reflective luminous layer,
- wherein the reflective luminous layer comprises a resin, a phosphor, and titanium dioxide (TiO2).
An image projection device comprising:
- a light source configured to output blue light;
- and
- a phosphor wheel configured to output light of a plurality of colors based on the incident blue light during rotation of the phosphor wheel,
- wherein the phosphor wheel comprises:
- a substrate;
- a reflective luminous laver disposed on the substrate and
- a phosphor layer disposed on the reflective luminous layer,
- wherein the reflective luminous layer comprises:
- a resin;
- and
- a phosphor having a higher thermal conductivity than the resin.
Dependencies are inferred from the claim text.