Patent ID: 8391326
Filing Date: 2013-03-05
Classification: H01S

Abstract:
1. A laser light source module comprising: a stem that is made of an iron-based material and has a through hole; a first heat sink that is made of a copper-based material and is press-fitted into the through hole of the stem; a mount that is made of a copper-based material and is arranged on the first heat sink; at least one semiconductor laser device that is mounted on an upper surface side of the mount; a lens barrel that is fixed on an upper surface of the stem; a light-collecting optical system that is fixed in the lens barrel and collects laser beams from the semiconductor laser device; and a second heat sink that is bonded to lower surfaces of the stem and the first heat sink by a thermal conductive adhesive, wherein an upper surface of the first heat sink is on a same plane as the upper surface of the stem, and a lower surface of the first heat sink is located higher than a lower surface of the stem, the upper surface of the stem includes an alignment mark as a reference point, and the mount on the first heat sink and the lens barrel on the stem are fixed at predetermined positions, respectively, with reference to the alignment mark, and the semiconductor laser device is positioned on an optical axis of the light-collecting optical system based on the upper surfaces of the stem and the first heat sink being on the same plane and used as reference surfaces.