Optical-head drive

Details Optical-head drive Optical-head drive

1992-01-28

1993-08-03

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369109, G11B 700

Patent

active

052335810

ABSTRACT:
An optical-head drive having a guide member secured in the vicinity of the center of an optical disk, an optical head composed of a diffraction grating for splitting a light beam into two sub-beams, an objective lens for converging the sub-beams respectively on the optical disk and a member to be guided slidingly by the guide member, and driving means which moves the optical head to a desired radius location on the optical disk while swinging the optical head around the guide member for correcting the angle of the diffraction grating by making the member to be guided slide along the guide member. This configuration enables the correction of the angle of the diffraction grating to be performed simultaneously with the movement of the optical head.

REFERENCES:
patent: 4403316 (1983-09-01), van de Veerdonk
patent: 4669073 (1987-05-01), Wakabayashi et al.
patent: 4688201 (1987-08-01), Towner et al.
patent: 4761774 (1988-08-01), Ishibashi et al.
patent: 4773052 (1988-09-01), Sugiura et al.
patent: 4912693 (1990-03-01), Goda
patent: 5132953 (1992-07-01), Matsubayashi

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