Light source unit and projector

A projector comprising:

• a light source unit which comprises:
• a laser light source unit in which two or more types of laser emitting elements are arranged in a planar fashion on a same plane, wherein the laser emitting elements emit light having wavelength bands that are different from each other;
• a diffusing unit disposed on an optical path of the light emitted from the laser light source unit to diffuse the light emitted from the laser light source unit;
• and
• a light source control unit which controls illumination of the laser emitting elements in a time sharing manner in accordance with the types of the laser emitting elements, wherein the light source control unit controls the illumination of the laser emitting elements such that blue laser emitting elements have a longer luminescence time among the two or more types of laser emitting elements, and such that red laser emitting elements have a shorter luminescence time among the two of more types of laser emitting elements;
• a display device which generates projection light;
• a light source side optical system which guides light emitted from the light source unit to the display device;
• a projection side optical system which guides projection light generated by the display device;
• and
• a projector control unit which controls the display device and the light source unit;
• wherein, in the laser light source unit, all of the blue laser emitting elements which have a longer luminescence time among the two or more types of laser emitting elements are arranged in a lower portion of the plane in a vertical direction than all of the red laser emitting elements which have a shorter luminescence time among the two of more Noes of laser emitting elements, such that all of the blue laser emitting elements are arranged lower in a housing of the oroiector than all of the red laser emitting elements.