Optical head movable in a tracking direction

Details Optical head movable in a tracking direction Optical head movable in a tracking direction

1983-02-22

1986-02-18

Richardson, Robert L.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

250201, G11B 708

Patent

active

045717150

ABSTRACT:
An optical head for use with an optical disk has a unit packaging an optical path conversion device for converting a light beam path from substantially in parallel to the surface of a rotating optical disk into a direction substantially perpendicular to the surface of the optical disk, a lens system for focusing the light beam onto the recording surface of the optical disk, and a focus controlling mechanism for adjusting the focus of the lens system. A head outer shell supports the unit by one or more diaphragms for movement of the unit in the parallel direction of the optical path. A track control mechanism which includes an electromagnetic actuator adjusts the positional relation of the unit relative to outer shell in that parallel direction without causing unit movement in the perpendicular direction.

REFERENCES:
patent: 4437177 (1984-03-01), Watabe et al.
patent: 4458980 (1984-07-01), Ohki et al.
patent: 4472024 (1984-09-01), Konomura et al.

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