Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1994-12-27
1997-01-07
Epps, Georgia Y.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 4414, 369 4421, G11B 709
Patent
active
055924590
ABSTRACT:
In an optical head device on which a movable member on which a movable member which can be largely moved to the tracking direction and slightly rotatably moved, if an optical unit is mounted on the movable member in addition to an objective lens, no rotation shaft passing through an interior of the movable member is provided and the central portion of the rotation of the interior of the movable member is made hollow not to interrupt the course of the light beam. Moreover, plate springs for supporting the movable member from the outside are provided such that the movable member can be smoothly rotatably moved to a carriage. The carriage is designed to have smaller mass than that of the movable member. Whereby, the device can be miniaturized and lightened, oscillation can be reduced, and high-speed seek can be obtained.
REFERENCES:
patent: 5062095 (1991-10-01), Horikawa et al.
patent: 5105405 (1992-04-01), Hashimoto et al.
patent: 5414563 (1995-05-01), Tanaka
patent: 5442490 (1995-08-01), Suzuki
Chu Kim-Kwok
Epps Georgia Y.
Kabushiki Kaisha Toshiba
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