LIGHT SOURCE UNIT AND IMAGE DISPLAYING APPARATUS

摘要

A light source unit includes 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 in a spreading direction that is perpendicular to the one direction. A cylindrical lens held by a first body tube collimates the laser beams in block. Circular lenses held by a second body tube condense the collimated beams into an inlet of an optical fiber. The first body part and the second body part are positioned and directly coupled to each other so that an optical axis of the cylindrical lens accords with that of the circular lenses.