Abstract: An apparatus for additively manufacturing three-dimensional objects may include at least one calibration unit, at least one irradiation device, and a determination device. The least one calibration unit may include at least one calibration region arranged in the beam guiding plane, and the at least one calibration region may include a plurality of sub-regions differing in respect of at least one optical property. The at least one irradiation device may be configured to guide a plurality of energy beams across the at least one calibration region comprising the plurality of sub-regions, and a plurality of calibration signals may be generated by the plurality of sub-regions being irradiated with the plurality of energy beams. The determination device may be configured to determine the plurality of calibration signals and to determine a calibration status of the irradiation device based at least in part on the determined plurality of calibration signals.

Abstract: An apparatus for additively manufacturing three-dimensional objects may include at least one calibration unit, at least one irradiation device, and a determination device. The least one calibration unit may include at least one calibration region arranged in the beam guiding plane, and the at least one calibration region may include a plurality of sub-regions differing in respect of at least one optical property. The at least one irradiation device may be configured to guide a plurality of energy beams across the at least one calibration region comprising the plurality of sub-regions, and a plurality of calibration signals may be generated by the plurality of sub-regions being irradiated with the plurality of energy beams. The determination device may be configured to determine the plurality of calibration signals and to determine a calibration status of the irradiation device based at least in part on the determined plurality of calibration signals.

Abstract: A method of additively manufacturing three-dimensional objects, and/or a method of controlling one or more irradiation parameters of the energy beam system, may include determining an irradiation setting using an irradiation control model and outputting an irradiation control command to an energy beam system based at least in part on the irradiation setting. The irradiation control model may be configured to determine the irradiation setting based at least in part on a power density factor and/or an irradiation vector factor. The irradiation control command may be configured to change one or more irradiation parameters for additively manufacturing a three-dimensional object. An additive manufacturing system may include an energy beam system and a control system that includes an irradiation controller. The irradiation controller may include a control module configured to perform such a method.

Abstract: A method of additively manufacturing three-dimensional objects, and/or a method of controlling one or more irradiation parameters of the energy beam system, may include determining an irradiation setting using an irradiation control model and outputting an irradiation control command to an energy beam system based at least in part on the irradiation setting. The irradiation control model may be configured to determine the irradiation setting based at least in part on a power density factor and/or an irradiation vector factor. The irradiation control command may be configured to change one or more irradiation parameters for additively manufacturing a three-dimensional object. An additive manufacturing system may include an energy beam system and a control system that includes an irradiation controller. The irradiation controller may include a control module configured to perform such a method.

Abstract: An apparatus for additively manufacturing three-dimensional objects may include at least one calibration unit, at least one irradiation device, and a determination device. The least one calibration unit may include at least one calibration region arranged in the beam guiding plane, and the at least one calibration region may include a plurality of sub-regions differing in respect of at least one optical property. The at least one irradiation device may be configured to guide a plurality of energy beams across the at least one calibration region comprising the plurality of sub-regions, and a plurality of calibration signals may be generated by the plurality of sub-regions being irradiated with the plurality of energy beams. The determination device may be configured to determine the plurality of calibration signals and to determine a calibration status of the irradiation device based at least in part on the determined plurality of calibration signals.