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US 7,787,595 B2Granted
Electron source
AssigneeSiemens Aktiengesellschaft
InventorsSven Fritzler, Peter Schardt, Frank Sprenger
Life of this patent
Estimating the term…
Abstract
An electron source has an electron emitter, an anode, a voltage source connected between the electron emitter and the anode, as well as a switch connected with the electron emitter. The switch is fashioned as a optoelectronic switching element.
Claims7
An electron source comprising:
- an electron emitter that emits electrons therefrom;
- an anode;
- a voltage source connected between the electron emitter and the anode that generates a voltage that accelerates said electrons emitted by said electron emitter toward said anode;
- a plasma switch connected to said electron emitter that is operable to activate and deactivate emission of said electrons by said electron emitter, said plasma switch being formed as an opto-electronic switching element;
- and
- a vacuum enclosure in which said plasma switch is contained, said vacuum enclosure having an enclosure wall with a light-conducting element therein allowing light to reach said plasma switch in said vacuum enclosure.
3 more elements
An x-ray apparatus comprising:
- an x-ray source that emits x rays;
- a radiation detector on which said x-rays are incident;
- and
- said x-ray source comprising an electron source comprising an electron emitter that emits electrons therefrom, an anode, a voltage source connected between the electron emitter and the anode that generates a voltage that accelerates said electrons emitted by said electron emitter toward said anode, and a plasma switch connected to said electron emitter that is operable to activate and deactivate emission of said electrons by said electron emitter, said plasma switch being formed as an opto-electronic switching element;
- and
- a vacuum enclosure in which said plasma switch is contained, said vacuum enclosure having an enclosure wall with a light-conducting element therein allowing light to reach said plasma switch in said vacuum enclosure.
3 more elements
Dependencies are inferred from the claim text.