X-ray tube, x-ray system, and method for generating x-rays

Details X-ray tube, x-ray system, and method for generating x-rays X-ray tube, x-ray system, and method for generating x-rays

2007-10-09

2010-11-16

Kiknadze, Irakli (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S138000, C378S144000

Reexamination Certificate

active

07835501

ABSTRACT:
According to an exemplary embodiment an x-ray tube comprises a cathode, rotable disc anode, and a focal spot modulating unit, wherein the cathode is adapted to emit an electron beam, and wherein the focal spot modulating unit is adapted to modulate the electron beam in such a way that an intensity distribution of the electron beam on a focal spot on the anode is asymmetric such that the intensity of the electron beam on the focal spot is higher at the front of the focal spot with respect to the rotation direction.

REFERENCES:
patent: 2108573 (1938-02-01), Alfter
patent: 4130759 (1978-12-01), Haimson
patent: 5125019 (1992-06-01), Evain et al.
patent: 6181771 (2001-01-01), Hell et al.
patent: 6356619 (2002-03-01), Nagy et al.
patent: 2003/0142790 (2003-07-01), Zhou et al.
patent: 2004/0150311 (2004-08-01), Jin
patent: 2005/0185761 (2005-08-01), Freudenberger et al.
patent: 2850583 (1980-06-01), None

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