Patent ID: 7068694
Filing Date: 2006-06-27
Classification: G11B,H01L,H01S

Abstract:
1. A mold type semiconductor laser comprising: a die pad and a plurality of leads formed by a plate-shaped lead frame, the die pad being connected to one of the leads; a package that is made of mold resin, and integrally holds the die pad and the leads; a laser chip that is mounted on the die pad through a sub-mount; and a transparent plate that is placed in front of a light-outgoing face of the laser chip, wherein the package comprises at least an upper mold resin portion which, in the case when the lower face of the die pad and the leads serves as a parting line, covers the leads on the upper face side by the parting line; the upper mold resin has two frame side walls, which extend in a direction parallel to the laser-beam outgoing direction of the laser chip, and also extend ahead of the laser chip outgoing face on the two sides with the laser chip interposed therebetween; and each of the two frame side walls has a slit, which is used for placing the transparent plate on the two frame side walls not in a direction perpendicular to the outgoing direction of the laser beam, but with a predetermined angle for correcting astigmatism, and which is formed from the upper face side of the frame side walls through the lower face of the laser chip, and wherein the transparent plate is secured into two slits of the two frame side walls, and only in the upper mold resin portion.