Objective lens driving device and optical pickup unit employing

Optical: systems and elements – Lens – With support

Patent

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Details

359824, G02B 702

Patent

active

056662351

ABSTRACT:
An objective lens driving device employed for a recording and/or reproducing apparatus for an optical recording medium includes a bobbin on which an objective lens is mounted, a supporting mechanism, first and second coils and a magnetic circuit. The supporting mechanism supports the bobbin in at least one of a first direction parallel to the optical axis of the objective lens and a second direction perpendicular to the optical axis. The first coil is provided on the bobbin and is mounted so that at least its one coil side is substantially perpendicular to the first direction. The second coil is provided on the bobbin and is mounted so that at least its one coil side is substantially parallel to the first direction. The magnetic circuit has a pair of magnets facing each other with a pre-set gap in-between. The first and second coils are arranged in the gap and plane-symmetrically with respect to the centerline of the gap.

REFERENCES:
patent: 5285434 (1994-02-01), Kim
patent: 5523891 (1996-06-01), Fujisawa
patent: 5541899 (1996-07-01), Kume
patent: 5555228 (1996-09-01), Izuka
patent: 5566149 (1996-10-01), Song

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