Wavelength conversion element, light source apparatus, image projection apparatus, and manufacturing method of the wavelength conversion element
AssigneeCanon Kabushiki Kaisha
InventorsYuya Kurata, Hiroshi Yamamoto, Shigefumi Watanabe
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Abstract
A wavelength conversion element includes a wavelength conversion layer configured to convert light having a first wavelength into light having a second wavelength, and a flattening layer formed on at least one surface of the wavelength conversion layer. The flattening layer has a surface roughness smaller than that of the wavelength conversion layer. The wavelength conversion layer is made of a sintered body obtained by sintering a phosphor material and a ceramic material.
Claims13
A wavelength conversion element comprising:
- a wavelength conversion layer configured to convert light having a first wavelength into light having a second wavelength;
- and
- a flattening layer formed on at least one surface of the wavelength conversion layer,
- wherein the flattening layer has a surface roughness smaller than that of the wavelength conversion layer, and
- wherein the wavelength conversion layer is made of a sintered body obtained by sintering a phosphor material and a ceramic material.
A manufacturing method of a wavelength conversion element, the manufacturing method comprising the steps of:
- forming a wavelength conversion layer configured to convert light having a first wavelength into light having a second wavelength;
- and
- forming a flattening layer on at least one surface of the wavelength conversion layer,
- wherein the wavelength conversion layer is made of a sintered body obtained by sintering a phosphor material and a ceramic material.
A manufacturing method of a wavelength conversion element, the manufacturing method comprising the steps of:
- forming a wavelength conversion layer configured to convert light having a first wavelength into light having a second wavelength;
- and
- bonding at least one surface of the wavelength conversion layer and a reflective layer held on a substrate with each other.
Dependencies are inferred from the claim text.