Apparatus for visualizing a nuclear radiation source

Claim 1

A NUCLEAR RADITION VISUALIZING SYSTEM COMPRISING IMAGING LENS HAVING A THICK WALL BODY PORTION OF RADIATION ABSORBENT MATERIAL WITHIN WHICH IS FORMED A PINHOLE LENS, A PLANAR CONVERTER MEANS UPON WHICH THE IMAGED RADIATION IS RECEIVED, SAID CONVERTER CONSISTING OF A LARGE NUMBER OF INDIVIDUAL SCIENTILLATION ELEMENTS ARRANGED IN AMOSAIC PATTERN CONVERING THE FIIELD OF VIEW OF THE LENS, A MATRIX HAVING OPEN ENDED CELLS FOR RECEIVING AND HOLDING SAID SCINTILLATION ELEMENTS IN PLANAR ALIGNMENT, SAID MATRIX BEING MADE OF A NON-SCINTILLATING NONMETALLIC OPTICALLY INSULATING MATERIAL, SAID SCINTILLATION ELEMENTS BEING THEREBY SPACED FROM EACH OTHER BY THE NON-SCINTILLATING WALLS OF SAID CELLS AND ACTING TO PRODUCE LIGHT PHOTON ENERGY IN THE PRESENCE OF THE RADIATION WHEREBY THE DISTRIBUTED INTENSITY PATTERN OF THE SOURCE IS MADE VISIBLE UPON THE CONVERTER, AN ELECTRON TUBE OF THE IMAGE ORTHICON TYPE HAVING A PHOTOACTIVE CATHODE POSITIONED IN CLOSE OPTICAL COUPLING RELATION TO SAID CONVERTER, MEANS FOR SCANNING THE FULL AREA OF SAID CATHODE PLATE AND A CATHODE RAY DISPLAY MEANS HAVING A CONNECTION FROM ITS INPUT TO THE OUTPUT OF SAID ORTHICON TUBE.