Wavelength conversion element and projection device
AssigneeCoretronic Corporation
InventorWEI-HUA KAO
Life of this patent
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Abstract
A wavelength conversion element includes a substrate, a counterweight member and a wavelength conversion layer. The substrate has a first surface and a second surface opposite to each other. The counterweight member is welded to the first surface of the substrate and protrudes from the first surface of the substrate. The wavelength conversion layer is disposed on the first surface or the second surface of the substrate. A projection device having the wavelength conversion element is also provided. The wavelength conversion element and the projection device provided by the invention have good reliability.
Claims18
A wavelength conversion element, comprising a substrate, a counterweight member and a wavelength conversion layer, wherein:
- the substrate has a first surface and a second surface opposite to each other;
- the counterweight member is welded to the first surface of the substrate and protrudes from the first surface of the substrate;
- and
- the wavelength conversion layer is disposed on the first surface or the second surface of the substrate.
A projection device, comprising an illumination system, a light valve and a projection lens, the illumination system being adapted to provide an illumination beam, the light valve being disposed on a transmission path of the illumination beam to convert the illumination beam into an image beam, and the projection lens being disposed on a transmission path of the image beam, wherein the illumination system comprises:
- an excitation light source, adapted to provide an excitation beam;
- and
- a wavelength conversion element, disposed on a transmission path of the excitation beam, wherein the wavelength conversion element comprises a substrate, a counterweight member and a wavelength conversion layer, the substrate has a first surface and a second surface opposite to each other, the counterweight member is welded to the first surface of the substrate and protrudes from the first surface of the substrate, and the wavelength conversion layer is disposed on the first surface or the second surface of the substrate.
Dependencies are inferred from the claim text.