Optical head disk device

Details Optical head disk device Optical head disk device

2008-04-29

2008-04-29

Edun, Muhammad (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S112010

Reexamination Certificate

active

10985040

ABSTRACT:
The optical head device for carrying recording/reproducing of data by irradiating a recording face of an optical disk with a laser beam, includes a base frame provided with an optical system for guiding the laser beam to the optical disk; and a sub-frame provided with a semiconductor laser for and fixed to the base frame. In this optical head device, a diamond-like carbon (DLC) film is formed on the mating faces of the base frame and the sub-frame, respectively.

REFERENCES:
patent: 2002/0145815 (2002-10-01), Moriyama et al.
patent: 2003/0021219 (2003-01-01), Nagai
patent: 2005/0216927 (2005-09-01), Amitani
patent: A-3-165321 (1991-07-01), None

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