LASER LIGHT SOURCE UNIT

摘要

PROBLEM TO BE SOLVED: To provide a laser light source unit having a laser semiconductor element without being moved by thermal expansion of a circuit board. SOLUTION: This laser light source unit includes: a circuit board mounted with a laser semiconductor element having a plurality of light emitting points; a light source holder including three projecting parts abutting on the front face of the laser semiconductor element; and an elastic member for pressing the circuit board toward the light source holder at three pressing points by elastic force. The distances of the three pressing points from two of the projecting parts are equal to each other. COPYRIGHT: (C)2011,JPO&INPIT