| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for inspecting a container that can precisely inspect defects in side walls of a container without being influenced by the thickness of the container.SOLUTION: The method includes the steps of: irradiating a side wall 101 of a bottle 100 with illumination light from the outside of the bottle 100; and imaging light of the illumination light reflected from the side wall 101 with a camera 3, the imaging step capturing the images of a range including a reflection region A2 and an inspection region A1 different from the reflection region A2, the reflection region A2 being a region where an outer surface reflected light L1 reflecting from an outer surface 101a of the side wall 101 to the outside of the side wall 101 and an inner surface reflected light L2 reflected from an inner surface 101b of the side wall 101 to the inside of the side wall 101 come up, and the inspection region A1 being a region where reflected light by a recess 100a comes up.SELECTED DRAWING: Figure 1 |
