Electron emitter apparatus

US11955307B2 · kind B2 · utility

Assignee

• Siemens Healthineers AG · DE

Inventors

• Christoph JUD · Nuremberg, DE
• Peter Hackenschmied · Nuremberg, DE
• Joerg Freudenberger · Kalchreuth, DE
• Peter GEITHNER · Erlangen, DE
• Anja Fritzler · Simmerath, DE

Key dates

• Filing date: May 2, 2022
• Grant date: Apr 9, 2024
• Expiry date: May 2, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05G1/70
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

At least one example embodiment provides an electron emitter apparatus having a first ring of field-effect emitter needles, the field-effect emitter needles of the first ring forming a first emitter surface on an inner side of the first ring; and a second ring of field-effect emitter needles, the field-effect emitter needles of the second ring forming a second emitter surface on an inner side of the second ring, wherein the first ring and the second ring are arranged in such that the first emitter surface and the second emitter surface form a substantially contiguous three-dimensional overall emitter surface, the substantially contiguous three-dimensional overall emitter surface defining a hollow channel along a longitudinal axis of the electron emitter apparatus.