Patent ID: 6134058
Filing Date: 2000-10-17
Classification: G11B,H02K

Abstract:
An object lens driving device, comprising:a movable section;supporting sections for supporting the movable section; anda base for holding the supporting sections,the movable section comprising:an object lens for recording and/or reproducing optical information to and/or from a disk-shaped recording medium:a lens holder for holding the object lens; andat least four permanent magnets adhered to the lens holder,the supporting sections comprising:at least four metal wires substantially parallel to each other, each wire having a first end fixed to the lens holder and a second end connected to the base; andelastic deformable elements connected to the base and having connecting sections thereof connected to the second end of each respective metal wire, andthe base comprising:yokes fixed to the base and facing the respective permanent magnets;focusing coils wound around the respective yokes, wound axes of the focusing coils being oriented in a direction of an optical axis of the object lens; andtracking coils wound around the respective yokes, wound axes of the tracking coils being oriented in a direction perpendicular to the wound axes of the focusing coils.