Magnetooptical recording/reproducing apparatus

Details Magnetooptical recording/reproducing apparatus Magnetooptical recording/reproducing apparatus

1997-07-10

1998-10-13

Swann, Tod R.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369103, G11B 700

Patent

active

058222936

ABSTRACT:
A magnetooptical recording/reproducing apparatus including a light source for emitting light, an object lens for condensing the light onto a magnetooptical disk, a polarization beam splitter in an optical path between the light source and the object lens, a first holographic device for diffracting an ordinary beam from the light passing through the polarization beam splitter after being reflected from the magnetooptical disk and allowing an extraordinary beam to pass therethrough unaltered, a second holographic device for splitting the ordinary and extraordinary beams passed through the first holographic device into a plurality of beams, and a photodetector for detecting the beams passing through the first and second holographic devices.

REFERENCES:
patent: 5416765 (1995-05-01), Aikoh et al.
patent: 5648950 (1997-07-01), Takeda et al.
patent: 5684779 (1997-11-01), Ohuchida et al.
patent: 5737296 (1998-04-01), Komma et al.

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