Magneto-optical recording apparatus with an optical element prov

Details Magneto-optical recording apparatus with an optical element prov Magneto-optical recording apparatus with an optical element prov

1996-01-23

1998-05-05

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

3692751, 369109, G11B 1100, G11B 724

Patent

active

057485720

ABSTRACT:
An optical element for a magneto-optical recording apparatus which has a light receiving face on which light is incided, this light being reflected or transmitted on or through a magneto-optical recording medium and a mask for masking a part of the light receiving face, wherein the inciding light is partially masked by the mask. Also, a method for reproducing information from a magneto-optical recording medium which has the steps of: inciding light that is reflected or transmitted on or through the magneto-optical recording medium through an optical system into an optical detector; and reproducing the information according to a signal generated by the optical detector; wherein an optical element of the optical system or the optical detector is provided with the mask.

REFERENCES:
patent: 5161133 (1992-11-01), Levenson
patent: 5570338 (1996-10-01), Toda et al.
"Multichannel Operation of an Integrated Acousto-Optic Wavelength Routing Switch for WDM Systems" D'Alessandro et al; IEEE Photonics Technology Letters; Mar. 1994; pp. 390-393.
"Acousto-Optice Tunable Filter" Harris et al; Journal of the Optical Society of America, vol. 59, No.6; Jun. 1969; pp. 744-747.

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