Light source apparatus and projector

A light source apparatus comprising:

• a first light source configured to output first light having a first wavelength band;
• a second light source configured to output second light having a second wavelength band;
• a wavelength converter configured to convert the first light and the second light into third light having a third wavelength band different from the first wavelength band and the second wavelength band;
• a first optical layer disposed between the first light source and the wavelength converter and configured to transmit the first light and reflect the third light;
• a light guide disposed between the first optical layer and the wavelength converter and configured to guide each of the first light, the second light, and the third light;
• an incident angle adjusting system disposed between the second light source and the light guide and configured to adjust an angle of incidence of the second light with respect to the wavelength converter;
• and
• a second optical layer disposed between the incident angle adjusting system and the light guide and configured to transmit the second light and reflect the third light,
• wherein the wavelength converter has a first surface and a second surface that face opposite sides, and a third surface that intersects with the first surface and the second surface,
• the first light output from the first light source enters the wavelength converter via the first optical layer and the light guide and via the third surface,
• the third light, into which the first light and the second light are converted by the wavelength converter, travels through the light guide, and exits out of a region on the first surface side of the light guide,
• the second light output from the second light source enters the incident angle adjusting system, which adjusts the angle of incidence of the second light, and the resultant second light enters a region on the second surface side of the light guide via the second optical layer, and
• part of the second light entering the light guide enters the wavelength converter via the third surface and is converted into the third light by the wavelength converter, and another part of the second light entering the light guide exits out of a region on the first surface side of the light guide.