Rotary arm and optical head for a magneto-optic disk drive

Details Rotary arm and optical head for a magneto-optic disk drive Rotary arm and optical head for a magneto-optic disk drive

1991-05-06

1993-06-01

Nguyen, Hoa T.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 59, 360114, 369 4413, G11B 1304, G11B 712

Patent

active

052166430

ABSTRACT:
An optical disk drive includes a drive motor for rotating an optical disk and a rotary arm having first and second opposite ends. The rotary arm is mounted for rotation in a plane parallel to the disk plane by a mount. An objective lens is mounted to the rotary arm adjacent the second end. The objective lens is driven and positioned about a focus axis with respect to the disk plane by a focus motor. A laser, detector and optics are mounted to the radial arm. A tracking drive coil for producing a magnetic field is mounted to the second end of the radial arm immediately adjacent the objective lens. Permanent magnets on opposite sides of the tracking drive coil produce a magnetic field which cooperates with the magnetic field of the tracking drive coil to drive and position the objective lens about a tracking axis with respect to the optical disk plane.

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