| 摘要 |
An optical web defect detection system includes a light source and a detector disposed with respect to the light source so that the detector receives light modulated by a web moving proximate the light source. The detector outputs a signal corresponding to the modulated light. An adjustment mechanism is in operative communication with the detector to adjust the position of the detector with respect to the web. A control mechanism is in operative communication with the detector and the adjustment mechanism. The control mechanism receives the signal to detect a defect in the web based thereon and adjusts the position of the detector to optimize reception of the modulated light by the detector.
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