Patent ID: 7414949

Claim:
A semiconductor laser device, comprising: a semiconductor laser chip composed of a semiconductor substrate and a plurality of semiconductor layers stacked on an element formation face of the semiconductor substrate for outputting an irradiation light for irradiating an optical disk; a light receiving element which receives the irradiation light reflected by the optical disk as a feedback light; a package which accommodates the semiconductor laser chip and the light receiving element and which has an optical element through which the irradiation light and the feedback light transmit; and optical divider provided on one face of faces of the optical element for dividing the irradiation light into a main beam and two or more sub-beams, wherein the semiconductor laser chip includes an electrode formed on one face of the semiconductor laser chip and facing the optical element, the semiconductor laser chip being fixed in the package so that at least one of the sub-beams reflected by the optical disk is incident on the one face, and a chip exposing portion that exposes a region of the one face where the sub-beam is incident is formed in the electrode.