Camera-shake correction device

摘要

A small size, low profile camera-shake correction device. A camera-shake correction device (10) corrects camera shake by moving the entire auto-focusing lens drive device (20) in a first direction (X) and a second direction (Y) which are perpendicular to the optical axis (O) and are perpendicular to each other, the auto-focusing lens drive device (20) being provided with a focusing coil (26) and a permanent magnet (28) which is disposed on the outside of the focusing coil. The camera-shake correction device (10) includes: a base (14) disposed so as to be spaced from the bottom surface of the auto-focusing lens drive device (20); suspension wires (16) which each have one end affixed to the outer peripheral section of the base, which extend along the optical axis (O), and which support the entire auto-focusing lens drive device (20) in such a manner that the auto-focusing lens drive device (20) is rockable in the first direction (X) and the second direction (Y); and a camera-shake correcting coil (18) disposed so as to face the permanent magnet (28).

主权项

1. A camera-shake correction apparatus that corrects camera shake by moving all or a moving part of an auto-focusing lens drive apparatus for moving a lens barrel along an optical axis in a first direction and second direction that are perpendicular to said optical axis and that are perpendicular to each other, wherein said auto-focusing lens drive apparatus includes:
a focusing coil, a permanent magnet disposed on an outer radial-direction side of that focusing coil with respect to said optical axis, facing that focusing coil, a lens holder having a tubular section that supports said lens barrel, said lens holder fixing said focusing coil so as to be positioned around said tubular section, a magnet holder that is disposed on an outer periphery of said lens holder and supports said permanent magnet, and a pair of leaf springs that support said lens holder so as to be displaceable in said optical axis direction when positioned in a radial direction, and said camera-shake correction apparatus comprising; a base disposed so as to be spaced from a bottom surface of said auto-focusing lens drive apparatus, a plurality of suspension wires one end of each of which is fixed by an outer peripheral section of said base, said plurality of suspension wires extending along said optical axis and supporting all or a moving part of said auto-focusing lens drive apparatus so as to be able to rock in said first direction and said second direction, and a camera-shake correction coil disposed so as to face said permanent magnet, wherein: said permanent magnet is composed of a plurality of first permanent magnet sections and a plurality of second permanent magnet sections that are disposed so as to face each other in said first direction and said second direction and disposed so as to be spaced from each other in said optical axis direction, said first permanent magnet sections and second permanent magnet sections are polarized into a north (N) pole and a south (S) pole in a radial direction, and said first permanent magnet sections and second permanent magnet sections have magnetic poles that differ in said optical axis direction; said focusing coil is composed of a first and second focusing coil that are fixed around a tubular section of said lens holder, facing said plurality of first permanent magnet sections and said plurality of second permanent magnet sections respectively; said camera-shake correction coil is composed of a plurality of camera-shake correction coils that are disposed inserted between said plurality of first permanent magnet sections and said plurality of second permanent magnet sections; and said camera-shake correction apparatus has a ring-shaped coil board on which said plurality of camera-shake correction coils are formed.