Patent ID: 7489716
Filing Date: 2009-02-10
Classification: H01L,H01S

Abstract:
1. A semiconductor laser device comprising: a semiconductor laser chip; a plurality of electrode leads that are electrically conductive, said plurality of electrode leads including a chip mounting electrode lead having an upper portion on which the semiconductor laser chip is mounted; a base made of synthetic resin arranged to hold the electrode leads in an embedded state, the base being electrically insulating and having a protruding portion through which the plurality of electrode leads are embedded, and a face formed at a basal end of the protruding portion to face an emission direction of a laser beam emitted by the semiconductor laser chip; and a cap made of the synthetic resin for the base, the cap having an opening formed so as to face an emission end face of the semiconductor laser chip, and being integrally joined to the base on the face of the base to cover the protruding portion, wherein one surface of the upper portion of the chip mounting electrode lead is exposed from the protruding portion, the one surface including a heat release region broader than a region of the chip mounting electrode lead on which the semiconductor laser chip is mounted.