| 摘要 |
Apparatus for displaying a visual image of the X-ray response of a specimen comprises an electron beam source (4) for exciting X-ray emissions from the specimen (3). A detector (5) detects X-ray photons emitted by the specimen (3) and generates output signals representing the energies of X-ray photons received from discrete pixels of the specimen in a plurality of energy bands. A set of look-up tables (8) generate for each pixel and for each energy band visual colour component signals related to the mean energy of X-ray photons emitted from the pixel and detected by the detector (5) in that energy band. The range of X-ray energies is mapped into a range of visual colours. An accumulator (9) combines the colour component signals for each pixel. The colour components for each pixel are stored in a frame store (10) which is connected to a monitor (11) which displays an image defined by the colour components. <IMAGE> |
