Abstract: Additive manufacturing methods and systems are disclosed including irradiation devices for an additive manufacturing machine for additively manufacturing three-dimensional objects. The irradiation device includes a beam generation device configured to provide an energy beam travelling on a nominal beam path trajectory and an optical modulator comprising a reflective optic downstream from the beam generating device, wherein the optical modulator is configured to actuate the reflective optic to modify a position of the energy beam from the nominal beam path trajectory. The irradiation device further includes an optical scanner disposed downstream from the optical modulator, wherein the optical scanner is configured to translate the nominal beam path trajectory along a build plane of the additive manufacturing machine.