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1. (WO2001035399) OPTICAL INFORMATION STORAGE AND OPTICAL HEAD
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/035399 International Application No.: PCT/JP1999/006284
Publication Date: 17.05.2001 International Filing Date: 11.11.1999
Chapter 2 Demand Filed: 12.04.2000
IPC:
G11B 7/125 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
12
Heads, e.g. forming of the optical beam spot or modulation of the optical beam
125
Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
Applicants: HASEGAWA, Shinya[JP/JP]; JP (UsOnly)
ODAJIMA, Wataru[JP/JP]; JP (UsOnly)
AOYAMA, Nobuhide[JP/JP]; JP (UsOnly)
FUJITSU LIMITED[JP/JP]; 1-1, Kamikodanaka 4-chome, Nakahara-ku Kawasaki-shi, Kanagawa 211-8588, JP (AllExceptUS)
Inventors: HASEGAWA, Shinya; JP
ODAJIMA, Wataru; JP
AOYAMA, Nobuhide; JP
Agent: YAMADA, Masaki; Kosugi & Yamada Pelican Building 4th Floor 3-3, Nishi-shimbashi 3-chome Minato-ku Tokyo 105-0003, JP
Priority Data:
Title (EN) OPTICAL INFORMATION STORAGE AND OPTICAL HEAD
(FR) MEMOIRE D'INFORMATIONS OPTIQUE ET TETE OPTIQUE
Abstract:
(EN) An optical information storage and an optical head capable of a stable information access at a high storage density, comprising a shielding element held in a position close to or in contact with a recording medium surface and provided with a slit crossing the tracks of the recording medium at an angle $g(a) of up to 45?, a condensing means for condensing light emitted from a light source onto the slit of the shielding element, and a moving means for moving along the slit the light (S) condensed on the slit by the condensing means.
(FR) Cette invention se rapporte à une mémoire d'informations optique et à une tête optique permettant un accès stable aux informations à une densité de mémorisation élevée et comprenant à cet effet un élément de blindage maintenu dans une position proche ou au contact d'une surface de support d'enregistrement et pourvu d'une fente croisant les pistes du support d'enregistrement selon un angle $g(a) ne dépassant pas 45°, un moyen de condensation servant à condenser la lumière émise par une source de lumière sur la fente de l'élément de blindage, et un moyen de déplacement servant à déplacer le long de cette fente la lumière (S) condensée sur la fente par le moyen de condensation.
front page image
Designated States: JP, US
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)