Projector having color separation optical system with reflecting curved surface

A projector comprising:

• a light source;
• a light collection optical system adapted to collect light emitted from the light source;
• and
• a light modulation panel adapted to modulate the light collected by the light collection optical system,
• wherein the light collection optical system includes a color separation optical system adapted to separate the light emitted from the light source into a plurality of types of colored light,
• a reflecting curved surface is disposed in at least a light path of the colored light with the longest light path length between the light source and the light modulation panel out of the plurality of types of colored light,
• a dichroic mirror that transmits the colored light with the longest light path length to the reflecting curved surface, and that again transmits the colored light with the longest light path length after the reflecting curved surface reflects the colored light with the longest light path length, and
• wherein the light modulation panel modulates the plurality of colored lights.