APPARATUS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS AND METHOD FOR DETERMINING AT LEAST ONE PARAMETER OF AN ENERGY BEAM

摘要

Apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (5), which apparatus (1) comprises a determination device (8) that is adapted to determine at least one parameter relating to the energy beam (5), wherein the determination device (8) comprises at least one determination unit (9) adapted to determine at least one first parameter of a reflected part (10) of the energy beam (5), which is reflected at a build plane (7), wherein the determination device (8) is adapted to determine a difference between a reference parameter and the at least one first parameter of the reflected part (10).