Patent ID: 7046707

Claim:
A semiconductor laser device comprising: a conductive support body constructed of a base section and a mounting section provided on the base section; a semiconductor laser element mounted on the mounting section; and one set of leads integrally fit to the support body, wherein the base section has at least one penetrating opening, the one set of leads includes at least one first lead which is electrically and mechanically connected to the support body, and at least one second lead which is not electrically connected to the support body, said at least one penetrating opening receives at least the second lead inserted and is filled with a resin block which integrally fixes the lead inserted in the opening to the support body, the mounting section and a portion of the second lead that extends along the mounting section are entirely covered with an insulator, except for a reference surface of the mounting section and a surface of the second lead that is located on the same side as the reference surface, and the insulator that covers the mounting section and the second lead is formed of a resin material same as the resin block.