X-ray imaging tube with specific positional and size relationshi

Details X-ray imaging tube with specific positional and size relationshi X-ray imaging tube with specific positional and size relationshi

1991-10-10

1993-02-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313523, H01J 3150

Patent

active

051840081

ABSTRACT:
An X-ray imaging tube comprising an vacuum envelope, and input screen located in the input end of the envelope, an output screen located in the output end of the envelope, an anode located in the output end of the envelope, and a plurality of beam-converging electrodes located in the envelope and arranged along the inner surface of the envelope. The tube has an magnification of used input field size of 2.3 or more. The components of the tube have such positions and sizes, thus satisfying the following relations:

REFERENCES:
patent: 3801849 (1974-04-01), Edgecumbe
patent: 4585935 (1986-04-01), Butterwick

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