Patent ID: 6222903
Filing Date: 2001-04-24
Classification: G01N

Abstract:
A laminography system comprising:a table for supporting a test object;an X-ray source for irradiating X-rays onto a test object supported by the table, the X-rays projected from various positions in a common plane;an image intensifier for converting X-ray images transmitted through the test object into visible images, the visible images emitted from the image intensifier along a circumferential path having a geometric center, the image intensifier defining an image projecting plane;a view selector having a prism for receiving and refracting a light from the image intensifier, and an adjustment mechanism connected to the prism for adjusting the prism to a position in which images of a certain area of the image projecting plane can be selected, the adjustment mechanism comprising a first motor for rotating the prism about a first axis coinciding with the geometric center, and a second motor for rotating the prism about a second axis extending substantially perpendicular to the first axis;a first camera positioned for obtaining the images of the selected area;a second camera; anda mirror part disposed at a central area of the prism intersected by the first axis, the mirror arranged to reflect images to the second camera.