In the survey instrument which deals with the transparent material which wraps the survey instrument and

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and method for inspecting a transparent material or a package wrapped with the transparent material.;SOLUTION: In the apparatus for inspecting a transparent material or a package wrapped in the transparent material, at least, one irradiation device 11 for irradiating an object 1 to be inspected with light irradiated from different directions, an image-forming optical system 21a for forming the image of the shade generated in the object to be inspected irradiated with at least one irradiation device 11 and a decision device 41 for deciding the quality of the object 1 to be inspected, on the basis of at least two images generated by irradiating the object 1 to be inspected with the lights irradiated from different directions and formed by the image forming optical system 21a are provided.;COPYRIGHT: (C)2001,JPO