Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1985-04-23
1987-07-14
Corbin, John K.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
350 63, 369 45, G02B 2608, G02B 702
Patent
active
046799044
ABSTRACT:
A lens driving device for an optical pickup unit includes a support structure for supporting an objective lens so that its optical axis is perpendicular to the surface of a recording medium while movements in the direction of the optical axis and in a direction perpendicular to the optical axis are permitted. The device further includes a driving structure for driving the objective lens in the direction of the optical axis and in the direction perpendicular to the optical axis respectively. The driving structure is made up of a magnetic circuit which forms a gap in which first and second coils connected to the objective lens are disposed so that driving forces in the direction of the optical axis and in the direction perpendicular to the optical axis are independently produced when suitable driving currents are supplied to the first and second coils.
REFERENCES:
patent: 4367543 (1983-01-01), Araki et al.
patent: 4475179 (1984-10-01), Geyer
patent: 4547871 (1985-10-01), Sugiyama et al.
patent: 4554653 (1985-11-01), Malissin et al.
patent: 4557564 (1985-12-01), Van Rosmalen
patent: 4568142 (1986-02-01), Iguma
Ben Loha
Corbin John K.
Pioneer Electronic Corporation
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