Objective lens drive device and coil bobbin thereof

Details Objective lens drive device and coil bobbin thereof Objective lens drive device and coil bobbin thereof

1994-12-16

1996-07-09

Ben, Loha

Optical: systems and elements

Lens

With support

359823, 359814, G02B 702

Patent

active

055350593

ABSTRACT:
An objective lens drive device used in a an optical recording and/or reproducing apparatus includes a lens holder, a plurality of elastic supporting members and a coil bobbin. The lens holder holds an objective lens. Each one end portion of the plurality of elastic supporting members are fixed to the lens holder and each other end portion of the elastic supporting members are fixed to a fixed portion. The plurality of elastic supporting members movably support the lens holder in a parallel direction of the objective lens and a horizontal direction ortjogonal to the optical axis of the objective lens. A focussing coil is wound around the coil bobbin. At least one tracking coil is attached to the focussing coil. The coil bobbin is provided with a plurality of terminals to project therefrom. The terminals are wound with the end portions of the focussing coils and the end portions of the tracking coil.

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