Objective lens drive apparatus applicable to optical disk appara

Details Objective lens drive apparatus applicable to optical disk appara Objective lens drive apparatus applicable to optical disk appara

1990-04-19

1993-06-01

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369121, 369244, G11B 700, G11B 1700

Patent

active

052166481

ABSTRACT:
An objective lens drive apparatus applicable to an optical disk apparatus includes a base member disposed so as to oppose a recording surface of an optical disk and so as to be movable in a direction of a radius of the optical disk, a support mechanism supporting an objective lens on the base member and so as to be movable in the direction of the direction of the radius of the optical disk. The objective lens drive apparatus also includes a drive mechanism acting upon the support mechanism to move the objective lens on the base member, a displacement detector detecting a displacement of the objective lens on the base member, a controller controlling the drive mechanism so that the objective lens is maintained at a required position on the base member.

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patent: 4641020 (1987-02-01), Iwai
patent: 4769803 (1988-09-01), Yamamiya
patent: 4797866 (1989-01-01), Yoshikawa
patent: 4855982 (1989-08-01), Orlicki et al.
patent: 4878214 (1989-10-01), Hinotani
patent: 4943166 (1990-07-01), Yamashita
patent: 4971442 (1990-11-01), Okutani et al.
patent: 5018836 (1991-05-01), Noda et al.
patent: 5103345 (1992-04-01), Watanabe et al.

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