Objective lens driving apparatus including parallalogram structu

Details Objective lens driving apparatus including parallalogram structu Objective lens driving apparatus including parallalogram structu

1988-12-29

1991-12-17

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4422, 359814, 359824, G11B 709

Patent

active

050738836

ABSTRACT:
An objective lens driving apparatus has a driving mechanism for moving a bobbin provided with an objective lens in a direction parallel to the optical axis of the objective lens and in a direction perpendicular to the optical axis of the objective lens. Each of first and second supporting members comprises a pair of hinge portions and parallel links coupling the hinge portions for supporting the bobbin so that it is movable in the direction parallel to the optical axis and in the direction perpendicular to the optical axis. The first and second supporting members are attached to a frame, and the bobbin is movable in the direction parallel to the optical axis by the first and second supporting members and in the direction perpendicular to the optical axis by a third parallel link formed of the bobbin, the first and second supporting members and a part of the frame.

REFERENCES:
patent: 4616355 (1986-10-01), Kasahara
patent: 4633456 (1986-12-01), Luecke
patent: 4696566 (1987-09-01), Sekimoto et al.
patent: 4766583 (1988-08-01), Oinoue et al.
patent: 4794580 (1988-12-01), Ikedo et al.
patent: 4813033 (1989-03-01), Baasch et al.
patent: 4861138 (1989-08-01), Suzuki

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