1 Layout
نویسنده
چکیده
An experimental investigation of a surface analysis method has been carried out. The method uses a scanned laser line to detect scratches on glass surfaces. The defects are detected as differences in the scattered light, which are recorded with a digital camera. A problem with this method is to distinguish between light from the back and from the front of the sample, since transparent samples are being investigated. In this investigation, a flat sample from a display device is used to demonstrate the method. Subsequently, measurements are made on curved samples with significant roughness on the back surface. It is found from the measurements that this method can usefully extract surface details and distinguish between the front and the back of transparent samples.
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