Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1996-07-30
1999-02-23
Huber, Paul W.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 4414, G11B 700
Patent
active
058751661
ABSTRACT:
An optical pick-up apparatus for writing and/or reading information on and/or from an optical record medium including a light source, an objective lens projecting a light beam emitted by the light source onto the optical record medium, a holding member holding the objective lens movably in a focusing direction to perform a focusing control, a carriage to which the holding member is secured, a supporting mechanism for supporting the carriage movably in a tracking direction to effect a tracking control as well as an access control, and a driving member moving a movable member including the objective lens, holding member and carriage in the tracking direction. The supporting mechanism includes guide rails extending in the tracking direction and slide bearings formed in the carriage and coupled with the slide bearings. A coefficient of static friction of the movable member is set to a value not larger than 0.25.
REFERENCES:
patent: 4864170 (1989-09-01), Eguchi
patent: 5214630 (1993-05-01), Goto et al.
patent: 5347500 (1994-09-01), Eguchi
patent: 5532989 (1996-07-01), Getrever et al.
Ezawa Hiroshi
Ikegame Tetsuo
Nakano Jun-ichi
Huber Paul W.
Olympus Optical Co,. Ltd.
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