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The transparent aesthetic defects of polymeric polarizers are difficult to image and characterize using conventional illumination. To inspect such special defects, an automated inspection method was studied that employs the structured lighting technique to markedly enhance defect imaging. The defect was modelled as a microscale plano-convex lens, which has a slight difference in refractive index within...
The aesthetic defects of polymeric polarizers have a serious impact on the quality of thin film transistor liquid crystal display (TFT-LCD) panels. However, some of these slight and transparent defects can barely be imaged and characterized using conventional illumination. To inspect these special defects, a new and automated inspection method is proposed that employs structured-light illumination...
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