To provide a laser beam machine having an ample spatial margin in the upper and lover directions against a focus position and capable of easily machining a material to be worked with an three-dimensional shape of different height. 焦点位置に対する上下方向の位置的余裕を大きく、高さの相違する三次元的形状を有する被加工材を容易に加工できるレーザ加工装置の提供。 - 特許庁