Wavelength conversion device, phosphor wheel, light source device, projection display apparatus, and method for manufacturing wavelength conversion device

A method for manufacturing a wavelength conversion device, the method comprising:

• applying a plurality of first resin bodies including a first phosphor that converts first light incident on a substrate into fluorescent light that is second light having a wavelength different from a wavelength of the first light, onto the substrate to be arranged at intervals in a direction along a surface of the substrate;
• applying a plurality of second resin bodies including a second phosphor that converts the first light into fluorescent light that is third light having a wavelength different from the wavelength of the first light and the wavelength of the second light, onto the substrate to cause each of the plurality of second resin bodies to be adjacent to each of the plurality of first resin bodies in the direction along the surface of the substrate;
• and
• firing the plurality of first resin bodies and the plurality of second resin bodies applied onto the substrate.

A method for manufacturing a wavelength conversion device, the method comprising:

• forming a plurality of first sheets including a first phosphor that converts first light incident on a substrate into fluorescent light that is second light having a wavelength different from a wavelength of the first light;
• forming a plurality of second sheets including a second phosphor that converts the first light into fluorescent light that is third light having a wavelength different from the wavelength of the first light and the wavelength of the second light;
• alternately laminating the plurality of first sheets and the plurality of second sheets,
• winding the plurality of first sheets and the plurality of second sheets that are laminated;
• firing the plurality of first sheets and the plurality of second sheets that are wound;
• slicing the plurality of first sheets and the plurality of second sheets that are fired into a predetermined thickness to form a wavelength conversion element that is spiral;
• and
• fixing the wavelength conversion element to the substrate.