| 摘要 |
PURPOSE:To support a moving part without inclination by supporting the moving part including an objective lens movably and displacably to a fixed part with a wire to form a bent part arranged in a point symmetry to the gravity center of the moving part. CONSTITUTION:A moving part 20 is supported by a wire 10, and both side surfaces at the remotest position from the gravity center of the moving part 20 are supported at the section of the fixed part so that the rigidity can be made largest to the rotation of the moving part 20. Thus, by supporting both remotest side surface from the moving part 20, the rotation of the moving part 20 can be suppressed. For the wire 10, the rigidity is comparatively small in a Z shaft direction and an X shaft direction and it is comparatively large in a Y shaft direction, and therefore, the moving part 20 can be displaced with the Z shaft direction and the X shaft direction as the focusing direction and the tracking direction. A supporting member is of an S-shape, arranged so as to come to be a point symmetry to the gravity center of the moving part 20, and the wire 10 is linked by an attenuating material 11 between adjoining lines in the part bent to 180 deg..
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