reinforced internally with heavier core materials metal inserts ribs or pieces of various materials with specially selected properties where control of stray reflected or scattered radiation is required a layer will be added using a radiation absorbing barrier material such as lead should any material such as lead be used which has potential for toxicity or other adverse properties the hazardous layer can be located inside the composite sandwich thus encapsulating the said hazardous layer rendering it safe but retaining the desired protective property of the radiation barrier a phosphor screen 11 is mounted in the large opening to the housing structure 10 and sealed to the housing at its perimeter mirrors 12 and 13 are mounted on the interior surfaces of the said housing structure 10 and carefully aligned to transmit the image clearly and accurately from the phosphor screen 11 to the lens 14 and digital camera 15 where the image is captured said lens 14 is mounted firmly and sealed to the housing structure forming an air and dust tight enclosure in the volume bounded by the phosphor screen 11 the lens 14 and the housing structure 10 the mirrors 12 and 13 are contained in the sealed space the enclosure also excludes any ambient light that would affect the image quality produced by.