Filter for a radiation emitter and apparatus

Details Filter for a radiation emitter and apparatus Filter for a radiation emitter and apparatus

2006-09-19

2006-09-19

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Beam control

Filter

C378S145000

Reexamination Certificate

active

07110508

ABSTRACT:
A filter plate having defects that may cause image artefacts is moved during an exposure. The movement distributes the defects of the plate in the image to a point where they can no longer be seen in the image. Preferably, the shifting of the plate is done in the plane of the plate, in a direction perpendicular to the axes of the rollers used for in the manufacture of the plate.

REFERENCES:
patent: 4219734 (1980-08-01), Chery
patent: 6633627 (2003-10-01), Horiuchi
patent: 2003/0199757 (2003-10-01), Toth et al.
patent: 0 629 377 (1994-12-01), None
patent: 982 002 (2000-03-01), None
patent: 1 120 086 (2001-08-01), None

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