X-ray tube

Details X-ray tube X-ray tube

1991-12-12

1993-11-02

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378136, 378137, H01J 3506

Patent

active

052590143

ABSTRACT:
An X-ray tube has a focal spot which can be varied in respect of position or size. A cathode has dimensions adapted to the variation of the focal spot, and between the cathode and the anode of the X-ray tube there is a grid arrangement which comprises a number of grid elements in one plane, which elements are electrically insulated from one another, and whose potential is independently controlled.

REFERENCES:
patent: 4002917 (1977-01-01), Mayo
patent: 5142652 (1992-08-01), Reichenberger et al.

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