CAMERA TROLLEY AND METHOD FOR INSPECTING CHANNEL TUBES

摘要

Inspection wagon (10) has a motor and two electronic cameras with one camera on each end of the wagon. Both cameras have a hemispherical wide-angle objective lens (12, 14) with the optical axes of both lenses parallel to each other, but in opposite directions. The imaging process involves combination of images from both cameras to provide a spherical image of the sewer pipe the wagon is passing.