Optical head apparatus for recording and reproducing data on a r

Details Optical head apparatus for recording and reproducing data on a r Optical head apparatus for recording and reproducing data on a r

1985-09-12

1988-07-19

Faber, Alan

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 45, 350255, G11B 709

Patent

active

047590050

ABSTRACT:
An optical head apparatus for recording and reproducing data by forming optical dots on a recording surface of a recording medium, comprising a base which is movable in a prescribed direction, a movable body movably provided in relation to the base, a lens which is attached to the movable body, a pair of magnets fixed to the side surfaces of the movable body, and a pair of position adjustment coils, which are attached to the base facing the pair of magnets, for operating together with the magnets to move the movable body in a prescribed direction, the coils being wound such that surfaces formed by loops of the coils are vertical to direction of magnetization of the magnets.

REFERENCES:
patent: 4321701 (1982-03-01), Arquie
patent: 4408313 (1983-10-01), Musha
patent: 4462096 (1984-07-01), Kusaka
patent: 4467463 (1984-08-01), Yano
patent: 4507764 (1985-03-01), Musha
patent: 4566089 (1986-01-01), Kime
patent: 4646283 (1987-02-01), Ito

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