Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1996-09-27
1998-03-03
Huber, Paul W.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
G11B 700
Patent
active
057243247
ABSTRACT:
In an optical pickup, a yoke of a supporting part has a flat bottom and both side walls upwardly bent at both ends thereof. Magnets are installed on inner surfaces of both side walls of yoke. Laser-penetrating hole is made in the plat botom and a guide projector are formed to the flat bottom. A spring is put around the guide projector. An objective lens fixing part is elastically supported by a spring in an inside of the yoke. In a main body of the objective lens fixing part, an objective lens and a through hole are installed in corresponding positions with the laser-penetrating hole and the guide projector, respectively. Coils are wound around side walls of the main body for tracking and focusing servos. The objective lens fixing part is elastically supported by the spring in a state that the guide projector is inserted into the through hole.
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patent: 5243584 (1993-09-01), Kang
patent: 5323378 (1994-06-01), Kim et al.
patent: 5602808 (1997-02-01), Futagawa et al.
Daewoo Electronics Co. Ltd.
Huber Paul W.
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