Three-dimensional driving arrangement

Details Three-dimensional driving arrangement Three-dimensional driving arrangement

1987-06-18

1988-08-23

McElheny, Jr., Donald

Dynamic information storage or retrieval

Combined independent audio systems

Combining signals to form composite

350255, 369112, G11B 712

Patent

active

047665840

ABSTRACT:
An improved 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 re 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 (1986-05-01), Koide et al.

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