Wavelength conversion device and projection device
AssigneeCoretronic Corporation
InventorsI-Hua Chen, Chi-Tang Hsieh
Life of this patent
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Abstract
The invention provides a wavelength conversion device and a projection device, where the wavelength conversion device includes a substrate, a wavelength conversion layer, and a light-transmitting layer. The wavelength conversion layer is disposed on the substrate and is made of a wavelength conversion material and a bonding material. The wavelength conversion layer has a refractive index of 1.55-1.70. The light-transmitting layer is disposed on the wavelength conversion layer and is made of the bonding material. The wavelength conversion device and the projection device provided by the invention have greater brightness and are less restricted by temperature during operation.
Claims18
A wavelength conversion device, comprising a substrate, a wavelength conversion layer, and a light-transmitting layer, wherein
- the wavelength conversion layer is disposed on the substrate, is made of a wavelength conversion material and a bonding material, and has a refractive index of 1.55-1.70, and
- the light-transmitting layer is disposed on the wavelength conversion layer and is made of the bonding material.
A projection device, comprising an excitation light source device, a wavelength conversion device, a light valve, and a projection lens, wherein
- the excitation light source device is configured to provide an excitation light beam;
- the wavelength conversion device is disposed on a transmission path of the excitation light beam, and comprises a substrate, a wavelength conversion layer, and a light-transmitting layer, wherein
- the wavelength conversion layer is disposed on the substrate, is made of a wavelength conversion material and a bonding material, and has a refractive index of 1.55-1.70, and the excitation light beam incident to the wavelength conversion layer is converted into a converted light beam by the wavelength conversion material, and
- the light-transmitting layer is disposed on the wavelength conversion layer and is made of the bonding material;
- the light valve is disposed on a transmission path of the excitation light beam and/or the converted light beam, and is configured to convert the excitation light beam and/or the converted light beam into an image light beam;
- and
- the projection lens is disposed on a transmission path of the image light beam and is configured to project the image light beam out of the projection device.
Dependencies are inferred from the claim text.