Light source apparatus and projector

A light source apparatus comprising:

• a light emitter that emits first light having a first wavelength band;
• a wavelength conversion member that contains a fluorophore and converts the first light emitted from the light emitter into second light having a second wavelength band different from the first wavelength band;
• and
• an output section that is provided along a center axis of the wavelength conversion member and outputs the second light generated by the wavelength conversion member, wherein
• the output section includes a first end section having a first surface facing the wavelength conversion member, a second end section located at a side opposite from the first end section along the center axis, a second surface in contact with the first and second end sections, a third surface in contact with the first and second end sections, a fourth surface in contact with the first and second end sections, and a fifth surface in contact with the first and second end sections,
• a cross-sectional area of the output section taken along a plane perpendicular to the center axis gradually decreases from the first end section toward the second end section,
• the second, third, fourth, and fifth surfaces each incline with respect to the first surface, and
• an inclination angle of each of the second, third, fourth, and fifth surfaces with respect to the first surface is greater than or equal to 40° but smaller than or equal to 58°.