| 摘要 |
A beam of light is transmitted through a glass ribbon along a scan path onto a beam splitter. The beam splitter directs a first scanning beam onto a first detector responsive to B type defects and a second scanning beam onto a second detector responsive to point type defects. Monitoring the movement of the scanning beam and the signals from the detectors, the location of B type and point type defects in a glass ribbon are obtained.
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