Objective lens driving apparatus for optical pickup

A driving apparatus, comprising:

• a blade on which an object is mounted;
• a plurality of elastic support members supporting the blade and capable of elastically moving with respect to the blade;
• and
• a servo-mechanism driving to drive the blade in a plurality of directions;
• wherein the plurality of elastic support members are divided into a first group of elastic support members symmetrically arranged at positions separated a first distance from a center of rotation and a second group of elastic support members symmetrically arranged at other positions separated an other distance from the center of rotation, and a gap between a neighboring elastic support member of the first group and an elastic support member of the second group is smaller than gaps between the elastic support members in their own group.

A driving apparatus, comprising:

• a blade on which an object to be driven is mounted;
• a servo-mechanism to drive the blade in a plurality of directions;
• a plurality of elastic support members, the plurality of elastic support members arranged in pairs;
• and
• wherein a distance from a center of rotation of the blade to each end of the plurality of elastic support members is substantially equal.

A driving apparatus, comprising:

• a blade on which an object to be driven is mounted;
• a servo-mechanism to drive the blade in a plurality of directions;
• a plurality of elastic support members, the plurality of elastic support members arranged in a first group of pairs and a second group of pairs;
• and
• wherein a distance from a center of rotation of the blade to each end of elastic support members in the first group is substantially equal to a first distance, the distance from a center of rotation of the blade to each end of elastic support members in the second group is substantially equal to a second distance, the first and second distances not substantially equal to each other, and the distance between ends of members in different groups of pairs is less than a distance between ends of members in different pairs of a same group.

A driving apparatus, comprising:

• a blade on which an object to be driven is mounted;
• a mechanism to drive the blade in a plurality of directions;
• and
• a plurality of elastic support members with a fixed position of each of the plurality of elastic support members substantially located on an imaginary circle having a center on an axis of rotation of the blade.

A driving apparatus, comprising:

• a blade on which an object to be driven is mounted;
• a mechanism to drive the blade in a plurality of directions;
• and
• a plurality of elastic support members each deformed a substantially equal amount during a movement of the blade.

A driving apparatus, comprising:

• a blade on which an object to be driven is mounted;
• a mechanism to drive the blade in a plurality of directions;
• and
• a plurality of elastic support members each having a substantially same amount of tensile force during a movement of the blade.

A driving apparatus, comprising:

• a blade on which an object to be driven is mounted;
• a mechanism to drive the blade in a plurality of directions;
• a plurality of elastic support members, the plurality of elastic support members arranged in at least three groups of pairs;
• wherein a distance from a center of rotation of the blade to an end of each of the plurality of elastic support members in a first group is substantially equal, a distance from a center of rotation of the blade to an end of each of elastic support members in the second group is substantially equal to a first distance, the distance from the center of rotation of the blade to an end of each of the elastic support members in the third group is substantially equal to a second distance different then the first distance, and the distance between ends of members in different groups of pairs is less then a distance between ends of members in different pairs in a same group.