INSPECTION DEVICE AND INSPECTION METHOD FOR HERMETIC CONTAINER

摘要

PROBLEM TO BE SOLVED: To improve accuracy in detection of a hermetic container which has abnormal internal pressure or is deformed. ! SOLUTION: An inspection device 1 for a hermetic container includes a displacement sensor 3 for irradiating a surface of a bottom cover 12 of a hermetic container 10 with a laser beam L and receiving reflected light R of the laser beam and determines whether an internal pressure of the hermetic container 10 is normal or not on the basis of displacement data acquired by the displacement sensor 3. The inspection device 10 further includes means which makes a three-dimensional image of a shape of the bottom cover 12 on the basis of the displacement data acquired by the displacement sensor 3, means which calculates a volume of a recessed portion of the bottom cover 12 on the basis of the three-dimensional image, and means which compares the calculated volume with a prescribed threshold to determine whether the internal pressure or the shape of the hermetic container is normal or