| 摘要 |
<p>A composite phosphor screen (50) for converting radiation, such as X-rays, into visible light. The screen includes a planar surface (52), which can be formed from glass, silicon, or metal, which has etched therein a multiplicity of closely spaced microchannels (60) having diameters of the order of 10 micrometers or less. Deposited within each of the microchannels is a multiplicity of phosphors which emit light when acted upon by radiation. The walls of the microchannels and/or the substrate surfaces include light reflective coatings so as to reflect the light emitted by the phosphors to the light collecting devices, such as film or an electronic detector. The coatings can be either radiation transparent or filtering/attenuating depending on the particular application.</p> |
