CURVATURE MEASUREMENT TOOL

摘要

The present invention relates to a curvature measuring apparatus capable of simply and accurately measuring a curvature of a curved object. The curvature measuring apparatus according to the present invention comprises: a holding member having two edges which are parallel to a first direction of an upper side and which form a first distance in a second direction perpendicular to the first direction, and having a concave side of a curved object, which forms a curvature in the second direction, contained at two edges parallel to the first direction; a sensing unit for receiving a light source reflected by ejecting the light source in a perpendicular direction on an upper side of the holding member; and a curvature measuring apparatus including a height measuring sensor for measuring a second distance from the sensing unit to the concave side of the object, and a calculation unit for calculating a third distance from the upper side of the holding member to the concave side of the curved object based on the second distance and for calculating a curvature of the curved object via the first distance and the third distance.