TARGET-FREE STRUCTURE OF THE SYSTEM MEASURING THREE-DIMENSIONAL COORDINATE

摘要

A target-free structure of a three-dimensional coordinate measurement system is provided to prevent loss of light wave by coating white paint of 0.01 to 0.02mm on a measurement target point. A target-free structure of a three-dimensional coordinate measurement system comprises a target groove(3) formed by punching a target point on the surface of an object(2) to be measured. The three-dimensional coordinate measurement system measures a three-dimensional coordinate of the target point from measurement angle and distance after an optical axis of an electronic distance meter is adjusted to the target point by using the electronic distance meter for measuring a lineal distance to the target point and using an angle measurer for measuring a tilt angle of the optical axis of the electronic distance meter. White paint is selectively coated on the inside or/and the periphery of the target groove.