Method for additively manufacturing at least one three-dimensional object

A method for additively manufacturing at least one three-dimensional object by successive layerwise selective irradiation and consolidation of build material layers, whereby at least one build material layer which is to be selectively irradiated and consolidated comprises a plurality of irradiation zones being separately irradiatable and consolidatable with at least one energy beam, comprising

• assigning, by a control unit, a parameter indicative of a time required for irradiating a respective irradiation zone to a plurality of irradiation zones of the respective build material layer,
• assigning, by the control unit, at least one first energy beam to a first irradiation zone whose parameter indicates that the first irradiation zone has the longest time required for irradiating and irradiating the first irradiation zone with the at least one first energy beam,
• assigning, by the control unit, at least one second energy beam to the irradiation zone whose parameter indicates that the irradiation zone has the second longest time required for irradiating and irradiating this irradiation zone with the at least one second energy beam, wherein
• after irradiation and consolidating the irradiation zone whose parameter indicates that the irradiation zone has the second longest time required for irradiating and irradiating with the at least one second energy beam is completed,
• assigning, by the control unit, the at least one second energy beam to the irradiation zone whose parameter indicates that the irradiation zone has the third longest time required for irradiating and irradiating this irradiation zone with the at least one second energy beam.