A projector includes an illumination optical system, a light modulation element, and a projection optical system. The illumination optical system includes a first light source section, a plurality of second light source sections, and an optical axis conversion element. The optical axis conversion element emits the light beam, which is input from the first light source section, so that an exit optical axis of the light beam approximately matches with an illumination optical axis, and emits the light beams, which are respectively input from the plurality of second light source sections, so that exit optical axes of the light beams intersect the exit optical axis of the light beam from the first light source section between the optical axis conversion element and the light modulation element.