Patent ID: 7420174

Claim:
A nondestructive inspection device that radiates penetrative radiation from a radiation source to an inspection object, detects penetrative radiation transmitted through said inspection object using a detector, and nondestructively inspects an inside of said inspection object based on information of intensity of said penetrative radiation and information of detection position of the penetrative radiation, wherein a plurality of radiation sources that emit penetrative radiations are arranged so as to respectively radiate said penetrative radiations to said detector from different positions on opposite sides of an inspection area into which said inspection object enters, said plurality of radiation sources irradiate the detector from different directions so that irradiated areas overlap each other; and, the nondestructive inspection device comprising: a modulation device that assigns different modulations to each penetrative radiation emitted from each of said radiation sources, and an identification device that distinguishes the modulations assigned to the penetrative radiations incident on said detector based on output of said detector, and identifies the radiation of each penetrative radiation source incident on the detector.