| 摘要 |
A semiconductor laser device according to the present invention includes: at least one laser chip that emits a laser beam; a plurality of lead pins that are electrically connected to the laser chip and that supply current to get the laser beam emitted; and a stem that holds the laser chip and the lead pins thereon. The lead pins have mutually different lengths and the longest one of the lead pins is electrically connected to the stem.
|
