An X-ray emitter includes an emitter housing in which an X-ray tube is disposed and held in the emitter housing by a fixing facility. The fixing facility includes a fixed bearing disposed on the cathode side and a floating bearing disposed on the anode side. At least the floating bearing has at least one damping element. In the X-ray emitter, the X-ray tube is aligned inside the emitter housing and fixed in a respectively low-vibration or vibration-damped manner, resulting in a more stable focus position relative to a beam exit and also a correspondingly improved image quality.