| 摘要 |
PROBLEM TO BE SOLVED: To detect the height position of a faulty part or the like in a transparent or semitransparent product at high speed. SOLUTION: The photographing areas of two cameras 3, 4 installed with different angles are joined to simultaneously photograph a foreign body in a transparent or semitransparent object to be inspected W. The center of gravity of the foreign body on a screen of the cameras 3, 4 is captured by a storage of a computer 7. On the basis of the position information of the foreign body by the cameras 3, 4, the height position of the foreign body in the object to be inspected W is calculated through calculations using prestored installation angles of the cameras 3, 4, the thickness information of the object to be inspected W by a camera 5, or the like. COPYRIGHT: (C)2006,JPO&NCIPI
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