Patent ID: 6711235
Filing Date: 2004-03-23
Classification: G01N,G21K

Abstract:
An X-ray inspection system, comprising the following elements disposed sequentially along a central axis:an X-ray source capable of projecting a beam of radiation along said central axis; a first collimator disposed coaxially with said central axis at a first location along said central axis, said first collimator having a first slit-shaped aperture having a first dimension in a first direction perpendicular to said central axis; a second collimator disposed coaxially with said central axis at a second location along said central axis, said second collimator having a second slit-shaped aperture having a second dimension in said first direction; and means for causing said central axis to pass through a selected inspection zone of a target, wherein said second location of said second collimator and said second dimension of said second aperture are selected such that the portion of said target actually illuminated by said beam measured in said first direction is substantially equal to the size of said selected inspection zone measured in said first direction.