SEMICONDUCTOR LASER STABILIZATION LIGHT SOURCE DEVICE, DRAWING AND CASE DEVICES FOR THE SAME, AND PREVENTION OF ELECTROSTATIC BREAKDOWN OR THE LIKE DRAWING SUBSTRATE MOUNTED WITH INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor laser stabilization light source device, that can easily and safely replace a semiconductor laser element in a site, and a drawing substrate that can prevent static electricity breakdown or the like and mounted with an integrated circuit. SOLUTION: A drawing substrate 201 can be pushed freely in and pulled out from a connector substrate 205 at a case side. The surplus part of an optical fiber 213 connected to an LD element 212 which is mounted onto the substrate is wound to a reel 214 on the substrate for storing. A relay group 216 provided on the substrate is operated so that the required part of a signal pin for composing the LD element 212 is short-circuit at the moment, when the substrate is separated from the connector substrate 205.