US 2006/0242660 A1Published application

Optical pickup

AssigneeHitachi Media Electronics Co., Ltd.

InventorsKatsuhiko Kimura, Seiichi Katou, Kazuyuki Fukuda, Hienao Saito

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Abstract

The invention can obtain an excellent linear property in a focusing direction and a tracking direction and can obtain a stable operation, in an objective lens driving means of an optical pickup. In an optical pickup reading and writing an information with respect to an optical disc by using an objective lens, a movable portion mounting the objective lens thereon is supported by a support member constituted by a pair of flexible printed circuit boards respectively curved in opposite directions in a parallel direction to an optical axis of the objective lens so as to be movable with respect to a fixed portion, in both side surfaces of the movable portion facing with holding the objective lens therebetween.

Claims3

Dependent claims

An optical pickup reading and writing an information with respect to an optical disc by using an objective lens, comprising:

an objective lens;
a movable portion mounting said objective lens thereon;
a pair of elastic plates curved in a C shape or an O shape;
and
a fixed portion connected to said movable portion via said pair of elastic plates,
wherein said fixed portion has a surface facing to both side surfaces facing to each other with holding said objective lens of said movable portion therebetween, and each of said pair of elastic plates has a layout giving the appearance of the C shape or the O shape as seen from a direction perpendicular to an optical axis of said objective lens in each of said both side surfaces of said movable portion, and is fixedly connected to the side surface of said movable portion and a surface of said fixed portion facing to said side surface.

3 more elements

Dependencies are inferred from the claim text.