Optical information record/pickup head assembly

Details Optical information record/pickup head assembly Optical information record/pickup head assembly

1988-07-29

1990-09-25

McElheny, Jr., Donald

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369112, G11B 7095

Patent

active

049598244

ABSTRACT:
An information record/pickup head assembly for an optical information recording and/or reproducing apparatus using an optical information storage disk, comprising a stationary optical unit and a movable optical unit movable with respect to the information storage disk loaded, wherein the stationary optical unit emits a beam of light toward the movable optical unit which then re-directs the incident beam toward the information storage disk while returning to the stationary optical unit the beam of light reflected from the information storage disk. A focusing operation is carried out in the stationary optical unit.

REFERENCES:
patent: 4644516 (1987-02-01), Musha
patent: 4669073 (1987-05-01), Wakabayashi et al.
patent: 4688201 (1987-08-01), Towner et al.
patent: 4730294 (1988-03-01), Funada
patent: 4731772 (1988-03-01), Lee
patent: 4764912 (1988-08-01), Ando et al.
patent: 4769800 (1988-09-01), Moser et al.
patent: 4841510 (1989-06-01), Yoshizawa

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