| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device capable of preventing displacement of relative positions of an emission point of a semiconductor laser and a collimator lens even when force is applied in a direction parallel with an optical axis of the collimator lens.SOLUTION: A lens holder 115 has a ring-like groove formed coaxially with an optical axis of a collimator lens 114 around the outer peripheral surface thereof, and an indirect member 113 has a plurality of cut-out sections for injecting adhesive into the groove of the lens holder 115. The lens holder 115 is fixed to the indirect member 113 by the adhesive. With this arrangement, making a clearance between a through-hole of the indirect member 113 and the outer periphery of the lens holder 115 small improves resistance against impact force in a direction orthogonal to a Z-axis, while providing adherend surfaces on the lens holder 115 in a direction orthogonal to the Z-axis improves resistance against impact force in the Z-axis direction. |
