Patent ID: 7672048
Filing Date: 2010-03-02
Classification: B82Y,G01Q,H01J

Abstract:
1. A positioning mechanism for positioning a specimen, comprising: a supporting shaft including a spherical surface part and a tip portion to attach the specimen; a guide disposed substantially parallel to said supporting shaft; and impact force application means provided in the supporting shaft for exerting impact force in said supporting shaft so as to move and slide the supporting shaft, thereby positioning the specimen, wherein in case an axial direction of said supporting shaft constitutes a Z direction, and X, Y directions are perpendicular to the Z direction, said supporting shaft is supported by said guide at the spherical surface part so as to move by using the spherical surface part as a fulcrum in the X and Y directions and slide in the Z direction, said guide comprises at least three rail shape guides for nipping the spherical surface part of said supporting shaft, or one tubular member for nipping the spherical surface part of said supporting shaft by an inner periphery of the one tubular member, and said supporting shaft maintains its balance with the spherical surface part as the fulcrum.