Light source unit and image displaying apparatus

An image displaying apparatus comprising:

• a light source unit;
• an image displaying device that forms an image on an illumination area to be illuminated;
• an illuminating optical system that illuminates the image displaying device by using the laser beams emitted from the light source unit;
• and
• a projection optical system that magnifies the image formed by the image displaying device and projects the magnified image on a screen,
• the light source unit including:
• a laser element that includes a plurality of light emitting points that are arranged along one direction on an end face thereof and irradiates laser beams having a spread angle in a spreading direction that is perpendicular to the one direction;
• at least one cylindrical lens of which a direction of a generatrix is perpendicular to the spreading direction and that collimates the laser beams in block to obtain collimated laser beams;
• a first holder that houses therein and holds the cylindrical lens;
• at least one condenser lens that is arranged downstream of the cylindrical lens and condenses the collimated beams;
• and
• a second holder that houses therein and holds the condenser lens, wherein
• the first holder and the second holder are positioned and directly coupled to each other so that an optical axis of the cylindrical lens accords with that of the condenser lens.