Optical information storage unit

Details Optical information storage unit Optical information storage unit

1998-03-20

2000-07-25

Dinh, Tan

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4423, 369109, 369110, G11B 7007, G11B 1110

Patent

active

060944129

ABSTRACT:
An optical information storage unit is provided with a light source, a polarization beam splitter reflecting and irradiating a bundle of rays emitted from the light source onto a recording surface of a recording medium, and an optical element receiving a convergent light reflected by the recording surface and passed through the polarization beam splitter, and having an infinite focal distance with a convergent point of the convergent light that is variable.

REFERENCES:
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patent: 5151889 (1992-09-01), Saimi et al.
patent: 5243583 (1993-09-01), Ohuchida et al.
patent: 5394381 (1995-02-01), Fukumoto et al.
patent: 5477386 (1995-12-01), Okuda et al.
patent: 5508992 (1996-04-01), Hirose et al.
patent: 5523994 (1996-06-01), Ando et al.
patent: 5623462 (1997-04-01), Tezuka et al.
Current Status & Future of Magneto-Optical Disks, Nobutaka Imamura, MO Disk, Japan, Aug. 21, 1996, pp. 54-55.

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