Light source apparatus, illuminator, and projector having multiple reflection elements

A light source apparatus comprising:

• a first light source unit;
• a second light source unit;
• a first reflection element on which a first light beam outputted from the first light source unit is incident;
• a second reflection element on which a second light beam outputted from the second light source unit is incident;
• a third reflection element having a first curved section on which the first light beam reflected by the first reflection element is incident;
• and
• a fourth reflection element having a second curved section on which the second light beam reflected by the second reflection element is incident,
• wherein the first curved section has a first optical axis that is located outside the third reflection element and shifted away from the third reflection element toward the fourth reflection element, and
• the first light beam reflected by the first curved section is roughly parallel to the second light beam reflected by the second curved section.