| 摘要 |
PROBLEM TO BE SOLVED: To obtain method and apparatus for inspecting the parts having different optical characteristics, especially a glass container having side wall. SOLUTION: The inventive apparatus 10 inspects a transparent container having side wall parts 14, 16, 18 of different optical characteristics. The apparatus comprises a pair of light sources 24, 38 for directing the light energy through essentially different adjacent container parts having different optical characteristics. A camera 36 receives the light energy directed from both light sources through the container in the form of a single image representative of a part of the container entirely. Commercial variation is detected as a function of variation in the intensity of light in the camera. The camera comprises an array sensor 34 receiving the light energy transmitted through both parts of the container and being scanned by the incremental rotation of the container to produce an electronic image representative of the irradiated part of container entirely. The light sources are coordinated with an electronic imaging unit such that the optical characteristics are uniform over the entire part of the electronic image when the commercial variation is not present in the container. |
