| 摘要 |
In order to accurately inspect top inclination even when a bottle is inclined, an inspection means comprises a rotation means, a light irradiation means, a mouth part image capturing means, and a bottom part image capturing means. A telecentric lens unit of the bottom part image capturing means comprises a central reflector, reflection plates and a telecentric lens within a box-shaped body. The central reflector has a triangular prism shape, and the reflection plates are provided on both right and left sides of the central reflector. Light incident from an incidence port is reflected by the reflection plates, is reflected by the reflection surfaces on both sides of the vertex angle of the central reflector, passes through the telecentric lens, and reaches a camera. The top inclination in a vertical state is calculated from two points on the top surface of the mouth of the bottle and two points on a bottom part image captured simultaneously therewith. |
