Objective lens driver

Details Objective lens driver Objective lens driver

1993-01-25

1994-04-19

Ben, Loha

Optical: systems and elements

Lens

With support

359824, 369 4416, 369 4422, G02B 702

Patent

active

053051513

ABSTRACT:
An objective lens driver includes first and second permanent magnets disposed in opposed relationship with each other, first and second yokes for supporting the first and second permanent magnets, respectively, a movable member disposed in a first magnetic gap formed by the first and second permanent magnets, a coil for driving in the tracking direction provided on the movable member and wound on the first and second permanent magnets and the first and second yokes, an objective lens supporting member movably provided on the movable member, and a focusing coil provided on the supporting member and disposed in the first magnetic gap for moving the objective lens supporting member in the focusing direction.

REFERENCES:
patent: 4554653 (1985-11-01), Malissin et al.
patent: 4613962 (1986-09-01), Inoue et al.
patent: 4798447 (1989-01-01), Jansen et al.
patent: 5124965 (1992-06-01), Mizuno et al.
patent: 5150343 (1992-09-01), Goto et al.
Patent Abstracts of Japan, Kokai No. 57-110069, vol. 6, No. 200, Oct. 1982.

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