Objective lens actuating device, optical pickup employing the ob

Details Objective lens actuating device, optical pickup employing the ob Objective lens actuating device, optical pickup employing the ob

1994-10-19

1996-12-03

Ben, Loha

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4415, 359824, 359814, G11B 700

Patent

active

055815332

ABSTRACT:
An objective lens actuating device including an objective lens, a bobbin, an elastic support and a magnetic circuit. The bobbin has the objective lens mounted at its one end and first and second coils at its other end. The elastic support has its one end mounted on an end of the bobbin carrying the objective lens and has its other end supported by a fixation portion, and supports the bobbin for deflection in a direction parallel to the optical axis of the objective lens and in a direction orthogonal to the optical axis. The magnetic circuit drives the bobbin at least in a direction parallel to the optical axis of the objective lens and in a direction orthogonal to the optical axis by a magnet carrying the yoke and the first and second coils mounted on the bobbin.

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