G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.4
G11B 7/12 (2006.01) G11B 7/125 (2006.01) H01L 31/167 (2006.01) H01L 33/00 (2006.01) H01S 5/022 (2006.01)
Patent
CA 2006001
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.
Nakata Naotaro
Tanaka Haruo
Kirby Eades Gale Baker
Rohm Co. Ltd.
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