Three-dimensional driving arrangement

Details Three-dimensional driving arrangement Three-dimensional driving arrangement

1985-02-01

1987-09-29

McElheny, Jr., Donald

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 44, 369112, G11B 712

Patent

active

046965661

ABSTRACT:
A three-dimensional driving arrangement of an objective lens or the like, which is so arranged that coils for focusing control, tracking control and tangential control in three directions are disposed in one magnetic gap for compact size, while the coils for the tracking control and tangential control are each formed to have a V-shaped cross section, with going passage arms of the coils being disposed in the magnetic gap, but returning passage arms of them being disposed outside the magnetic gap through four slit-like notches formed in a yoke, thus making it possible to drive the objective lens independently in three directions.

REFERENCES:
patent: 4482986 (1984-11-01), Noda et al.
patent: 4555780 (1985-11-01), Koide
patent: 4574369 (1986-03-01), Koide et al.

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