Light source apparatus and projector

A projector comprising:

• a light source apparatus;
• and
• an optical modulator that modulates an illumination light generated on a basis of a light from the light source apparatus to generate a projection image, wherein
• the light source apparatus includes a wavelength conversion device that includes two or more wavelength conversion units serially coupled in a first direction, the wavelength conversion device having a configuration in which the two or more wavelength conversion units generate respective converted lights having wavelengths different from each other to generate two or more converted lights,
• the two or more wavelength conversion units each include
• a first end surface and a second end surface that are formed in a direction parallel to the first direction, and
• a light entering surface that is formed in a second direction different from the first direction and which an excitation light for generating the converted light enters,
• any two adjacent wavelength conversion units of the two or more wavelength conversion units are coupled to each other with the first end surface of one and the second end surface of the other being opposed to each other, and
• the first end surface of one wavelength conversion unit positioned at one end of the wavelength conversion device of the two or more wavelength conversion units is configured to be a light extraction surface from which the two or more converted lights
• are extracted out of the excitation light and the two or more converted lights.