| 摘要 |
PROBLEM TO BE SOLVED: To provide a light collection type scattering preventing grid which is easily produced and with which a focal distance can be adjusted. SOLUTION: This scattering preventing grid 20 obtained by injection molding from a reinforcing thermoplastic material is produced so as to form a light collection type X-ray absorptive frame structure 30 for demarcating a plurality of spaces 44. The reinforcing thermoplastic material has yield strength being stronger than that of a conventional scattering preventing grid producing material. Then the grid has rigidity in terms of structure which does not require a conventional fiber space filling material and, besides, the grid is bent in more than one direction to change the effective focal distance of the grid. High-density granules are added to the reinforcing thermoplastic material in order to obtain X-ray absorptive property while still keeping a desired structural characteristic.
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