Patent ID: 7367132
Filing Date: 2008-05-06
Classification: G01B,G01L

Abstract:
1. A contact-type displacement measuring apparatus comprising: a first movable body configured to move in reciprocation in a first linear direction; a driving unit configured to drive the first movable body; a second movable body configured to move in reciprocation in a second linear direction that is spaced apart from the first linear direction, in association with movement of the first movable body; a probe arranged at a tip of the second movable body; a measuring force detecting unit configured to detect, at a rear end of the second movable body, a measuring force applied to an object in a state in which the probe is in contact with the object; a position detecting unit configured to detect, at a position between the probe and the measuring force detecting unit, an amount of movement of the second movable body; and a control device configured to control the amount of movement of the first movable body such that the measuring force is kept constant corresponding to an output of the measuring force detecting unit.