X-ray diaphragm, X-ray irradiator, and X-ray apparatus

Details X-ray diaphragm, X-ray irradiator, and X-ray apparatus X-ray diaphragm, X-ray irradiator, and X-ray apparatus

2006-09-12

2006-09-12

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Beam control

Collimator

C378S121000

Reexamination Certificate

active

07106831

ABSTRACT:
An X-ray diaphragm which forms a pyramidal X-ray beam with use of a simple construction includes four blades which are arranged in a surrounding relation to four sides so as to form a pyramidal X-ray beam with an X-ray focus as a vertex, the four blades having a structure such that the blades are fitted in one another in the form of parallel crosses at portions corresponding to four-corner edges of the pyramid. The blades have respective plural cross beams, the cross beams being formed such that adjacent cross beams are fitted in each other. The distance between mutually opposed blades is variable.

REFERENCES:
patent: 3947690 (1976-03-01), Peyser
patent: 4752947 (1988-06-01), Telorack
patent: 5086444 (1992-02-01), Bartmann
patent: 5260984 (1993-11-01), Horbaschek
patent: 5287396 (1994-02-01), Stegehuis
patent: 04-267041 (1992-09-01), None

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