| 摘要 |
In an optical pick-up arranged to detect information recorded on an optical disk by causing laser light projected onto and reflected from a signal surface of the optical disk disposed within an optical system, to be received by a light receiving element provided in the optical system, a method of mounting onto the optical pick-up, a laser diode unit that includes a metallic substrate, and a laser diode, a photo-diode, a current feeding lead portion to the laser diode and a current output lead portion from the photo-diode, respectively provided on an upper face of the metallic substrate for emitting laser light. The laser diode unit is positioned and fixed at a predetermined position in the optical system by a mounting member. The mounting method comprises setting the underside face of the substrate and the mounting member in a desired positional relation for contact with each other, and thereafter welding a plurality of contact locations therebetween simultaneously by laser light, whereby to combine the laser diode unit and the optical pick-up into one unit. |
