Optical head unit having disk-shaped rotor with generally planar

Details Optical head unit having disk-shaped rotor with generally planar Optical head unit having disk-shaped rotor with generally planar

1994-10-11

1995-08-08

Epps, Georgia Y.

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With servo positioning of transducer assembly over track...

Optical servo system

369 4419, 369 4417, 369 4414, 369112, 359814, 359823, G11B 712

Patent

active

054405335

ABSTRACT:
An optical head unit includes a motor having a stator and a rotor which is mounted rotatably on the stator, at least the rotor having a generally disk-shaped (i.e., circular or polygonal) configuration, and an optical system mounted on a common, main surface of the rotor. The optical system includes a light emitting part for emitting a light beam, a focus actuator, an objective lens provided on the focus actuator, and a light beam receiving part. The light beam emitted from the light emitting part is output via the objective lens, and light received via the objective lens is received by the light receiving part.

REFERENCES:
patent: 4807213 (1989-02-01), Chung et al.
patent: 4864118 (1989-09-01), Opheij et al.
patent: 5062095 (1991-10-01), Korikawa et al.
patent: 5239528 (1993-08-01), Narahara et al.
Patent Abstracts of Japan, vol. 11, No. 116 (P-566) 11 Apr. 1987, & JP-A-61 261830 (Toshiba Corp.) 19 Nov. 1986.

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