Optical medium recording apparatus with a rotatable optical beam

Details Optical medium recording apparatus with a rotatable optical beam Optical medium recording apparatus with a rotatable optical beam

1994-01-21

1995-11-28

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4417, 369 97, 369116, 369119, G11B 709

Patent

active

054714567

ABSTRACT:
An optical recording and reproducing apparatus is provided with a light source that emits a beam of light, a rotatable head including a deflector that deflects the beam in a predetermined direction and an objective lens group which forms an image of the beam on an optical recording medium. The rotatable head rotates about an optical axis of the beam which is incident upon the rotatable head. A movable lens group, provided in an optical path of the beam between the light source and the rotatable head, is movable in at least an optical axis direction.

REFERENCES:
patent: 4998790 (1991-03-01), Iizuka et al.
patent: 5151890 (1992-09-01), Yonekubo
patent: 5194981 (1993-03-01), Morimoto
patent: 5272689 (1993-12-01), Tsujioka et al.
patent: 5287341 (1994-02-01), Ozue et al.
patent: 5369631 (1994-11-01), Hwang

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