Optical head for controlling light irradiation in a magneto-opti

Details Optical head for controlling light irradiation in a magneto-opti Optical head for controlling light irradiation in a magneto-opti

1993-09-03

1996-07-23

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369116, 369107, 369 13, 369120, G11B 700

Patent

active

055397182

ABSTRACT:
An optical head includes an irradiating device for irradiating a recording medium with a light beam, a separating device disposed in an optical path between the recording medium and the irradiating device, which is provided for separating a portion of the light beam traveling from the irradiating device to the recording medium, and a detecting device for detecting the portion of the beam separated by the separating device, which has a plurality of sensor portions.

REFERENCES:
patent: 4982393 (1991-01-01), Matsushita et al.
patent: 5067117 (1991-11-01), Shimizu et al.
patent: 5073888 (1991-12-01), Takahashi et al.
patent: 5136573 (1992-08-01), Kobayashi
patent: 5233596 (1993-08-01), Tani
patent: 5235587 (1993-08-01), Bearden et al.
patent: 5283775 (1994-02-01), Finkelstein et al.
patent: 5297128 (1994-03-01), Yamaguchi et al.

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