FILTER INSPECTION APPARATUS

摘要

The filter inspection apparatus checks if a predetermined object designed to be placed in a smoking article filter is properly arranged. The filter inspection apparatus is provided with: an emission unit for emitting an inspection electromagnetic wave of a predetermined frequency to a smoking article filter to be inspected; a receiving unit for receiving from the filter a reflected electromagnetic wave of the inspection electromagnetic wave emitted from the emission unit; an antenna unit that is placed to face the filter and propagates the inspection electromagnetic wave and the reflected electromagnetic wave; an acquisition unit for acquiring, on the basis of a reflection signal obtained by the receiving unit, predetermined information relating to the intensity or phase shift of the reflection signal, which are associated with the arrangement of the predetermined object in the filter; and a determination unit for determining if the predetermined object is properly arranged in the filter on the basis of the predetermined information acquired by the acquisition unit. This configuration reduces the size of the inspection apparatus.