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US 2004/0107428 A1Published application
Optical pickup apparatus
AssigneePioneer Corporation
InventorTakehiro Matsuda
Life of this patent
Estimating the term…
Abstract
An optical pickup apparatus includes an object lens opposed to a disk, a fixing section, and a bobbin suspended by the fixing section and four or more longitudinal elastic members for supporting the object lens. A plurality of coil pairs symmetric with respect to a point (180 degrees), the centroid of the object lens placement face of the bobbin exist and are placed in a different surface.
Claims14
An optical pickup apparatus comprising:
- an object lens arranged to be opposed to an optical disk;
- a bobbin configured to support the object lens;
- an elastic member configured to support the bobbin in a suspending manner;
- a fixing section attached to one end of the elastic member;
- and
- a pair of coil disposed on the bobbin,
- wherein each of the coil is disposed at 180 degrees symmetric position with respect to a centroid of a placement face of the object lens in the bobbin, and
- wherein each of the coil is disposed is disposed in a different plane.
5 more elements
An optical pickup apparatus comprising:
- an object lens arranged to be opposed to an optical disk;
- a bobbin configured to support the object lens;
- a first coil and a second coil disposed on a first side surface of the bobbin;
- and
- a third coil and a fourth coil disposed on a second side surface, which being opposed to the first side surface, of the bobbin,
- wherein the first coil and the third coil are disposed at a position being symmetric with respect to an optical axis of the object lens and are electrically connected to each other, and
- wherein the second coil and the fourth coil are disposed at a position being symmetric with respect to an optical axis of the object lens and are electrically connected to each other.
4 more elements
Dependencies are inferred from the claim text.