Optical pickup apparatus having a compact structure

Details Optical pickup apparatus having a compact structure Optical pickup apparatus having a compact structure

1990-03-16

1993-06-22

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4415, 359813, 359823, G11B 700

Patent

active

052220567

ABSTRACT:
An optical pickup apparatus includes a lens holder, a focusing coil mounted on the lens holder and passing through a gap between first and second yoke portions, and a tracking coil mounted on the lens holder in such a manner that it does not pass through the gap but passes adjacent a third yoke portion.

REFERENCES:
patent: 4592037 (1986-05-01), Ohnuki
patent: 4596448 (1986-06-01), Kikuchi
patent: 4613202 (1986-09-01), Kuriyama
patent: 4646283 (1987-02-01), Ito et al.
patent: 4752117 (1988-06-01), Ichikawa et al.
patent: 4891799 (1990-01-01), Nakano
patent: 4991161 (1991-02-01), Ikegame et al.
patent: 5022022 (1991-06-01), Kikuchi et al.

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