Coherent light generators – Particular temperature control – Heat sink
Patent
1989-12-19
1991-09-24
Gonzalez, Frank
Coherent light generators
Particular temperature control
Heat sink
21912163, 21912164, 25022724, 357 72, 357 75, 357 80, 357 81, 369122, H01S 304
Patent
active
050520059
ABSTRACT:
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 is provided with a laser diode unit which includes a metallic substrate, 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 disposed at one side face in the direction of thickness of the metallic substrate for emitting the laser light. The laser diode unit is positioned and fixed at a predetermined position of the optical system through a mounting member. The mounting method of the laser diode unit includes the steps of setting the other side face in the direction of thickness of the substrate and the mounting member in a desired positional relation for contact with each other. As a result, a plurality of contact places therebetween may be simultaneously welded by laser light for combining the laser diode unit and the optical pick-up into one unit.
REFERENCES:
patent: 4626653 (1986-12-01), Sciaky et al.
patent: 4768070 (1988-08-01), Takizawa et al.
patent: 4792658 (1988-12-01), Langhans et al.
patent: 4837768 (1989-06-01), Schmid
patent: 4906065 (1990-03-01), Taumberger
Nakata Naotaro
Tanaka Haruo
Gonzalez Frank
Rohm & Co., Ltd.
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