Portable fluoroscopes utilize a hingedly mounted, light shielded, fluorescent screen positioned in front of a look-through radiation shield. A leaded glass eyepiece positioned within the radiation shield is used as a radiation resistant viewing port to observe the image produced on the fluorescent screen by an irradiated object. The use of a relatively small piece of lead-glass in the viewing port of the present device in comparison to the use of a lead-glass plate the size of the fluorrescent screen, which is immediately adjacent thereto in the prior art, has resulted in a substantial reduction in weight and cost for the same degree of radiation protection.