Patent ID: 8449796

Claim:
A method of manufacturing a light guide provided in a radiation detector and allowing fluorescence to pass through, comprising: forming a lattice-like plate frame by fitting two or more first plates that extend along a first direction while being arranged in a second direction perpendicular to the first direction with two or more second plates that extend along the second direction while being arranged in the first direction for integration; inserting the plate frame into an aperture of a molding frame in a vertical direction; pouring a hardening resin prior to hardening to the aperture; placing a shaping member with a planar bottom face on the aperture of the molding frame, thereby covering a liquid surface of the hardening resin with which the aperture is filled with the bottom face for making the liquid surface flat, and flooding out a part of the hardening resin from the aperture to form a bulge for covering a side edge in the bottom face of the shaping member; hardening the hardening resin with which the aperture is filled to form a light guide with a hardened solid resin embedded in the plate frame, and hardening the bulge to form a burr composed of the solid resin and connecting with the light guide, thereby integrating the light guide with the shaping member; releasing the light guide from the molding frame by lifting the shaping member and the integrated light guide upward in the vertical direction simultaneously; and separating the burr from the light guide to cancel the connection of the light guide and the shaping member.