Patent ID: 7067814

Claim:
A radiation detector having a scintillator array formed of a plurality of scintillators in a compact, two-dimensional arrangement, a light guide optically combined to said scintillator array, and a plurality of photomultiplier tubes smaller in number than said scintillators and optically combined to said light guide, wherein: said light guide is formed of at least a lattice frame having plate-like optical elements combined crosswise, and a transparent resin, said lattice frame defining a plurality of cubicles; and said optical elements forming the cubicles are subjected to at least one of (a) an adjustment to predetermined intervals in a direction of arrangement of said scintillator array, (b) an adjustment to a predetermined angle to the direction of arrangement of said scintillator array, and (c) an adjustment to intervals different from intervals between said scintillators.