Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1991-12-11
1994-02-15
Mottola, Steven
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, G11B 5127
Patent
active
052873340
ABSTRACT:
A magneto-optical pickup apparatus includes an objective lens for focusing a laser beam emitted from a laser device onto a magneto-optical recording medium, driving coils, on which the objective lens is mounted, for driving the objective lens in focusing and tracking directions, and a plate arranged at an end portion of the driving coils between the objective lens and the magneto-optical recording medium. The plate is formed with a coil pattern for generating a magnetic field to be applied to the magneto-optical recording medium, and can allow a laser beam transmitted through the objective lens to pass therethrough.
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patent: 4926403 (1990-05-01), Tsuyuguchi
patent: 5022018 (1991-06-01), Vogelgesang
Vol. 10, No. 76 (P-440) (2133) Mar. 26, 1986 & JP-A-60 214 438 (Suwa Seikosha K.K.) Oct. 26, 1985.
Vol. 13, No. 9 (P-811)(3357) Jan. 11, 1989 & JP-A-63 217 547 (Fujitsu Ltd.) Sep. 9, 1988.
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Aoki Yoshio
Iwabuchi Kietsu
Sasaki Koji
Watanabe Tetsu
Yamagami Tamotsu
Mottola Steven
Shaw, Jr. Philip M.
Sony Corporation
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