Objective lens driving device and optical pickup device using the same
AssigneeSharp Kabushiki Kaisha
InventorsToshiharu Inui, Shinichi Tomoyama
Life of this patent
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Abstract
An objective lens driving device includes: a movable section 8 for collecting light of a light source onto an optical disk 2; and a driving section for driving the movable section 8 (i) in a direction of a light axis of an objective lens 1 which direction is orthogonal to a storage surface of the optical disk 2 and (ii) in an in-plane direction orthogonal to the light axis, wherein the movable section 8 includes a protruding portion 4 which protrudes in a direction orthogonal to the direction of the light axis of the objective lens 1, and there is provided a stopper section 16 for restricting a movable range of the movable section 8 by coming into contact with the protruding portion 4 when the movable section 8 moves.
Claims13
An objective lens driving device, comprising:
- an objective lens holding section for holding an objective lens which collects light of a light source onto a storage medium;
- a driving section for driving the objective lens holding section in a direction of a light axis of the objective lens which direction is orthogonal to a storage surface of the storage medium and in an in-plane direction orthogonal to the light axis;
- a protruding portion, provided on the objective lens holding, which protrudes in a direction orthogonal to the direction of the light axis of the objective lens section;
- and
- a restricting section for restricting a movable range of the objective lens holding section by coming into contact with the protruding portion when the objective lens holding section moves.
An optical pickup device, comprising an objective lens driving device which includes:
- an objective lens holding section for holding an objective lens which collects light of a light source onto a storage medium;
- a driving section for driving the objective lens holding section in a direction of a light axis of the objective lens which direction is orthogonal to a storage surface of the storage medium and in an in-plane direction orthogonal to the light axis;
- a protruding portion, provided on the objective lens holding section, which protrudes in a direction orthogonal to the direction of the light axis of the objective lens;
- and
- a restricting section for restricting a movable range of the objective lens holding section by coming into contact with the protruding portion when the objective lens holding section moves.
Dependencies are inferred from the claim text.