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|1. (WO2018128059) METHOD FOR INSPECTING GLASS PLATE, METHOD FOR MANUFACTURING SAME, AND DEVICE FOR INSPECTING GLASS PLATE|
|Applicants:||NIPPON ELECTRIC GLASS CO., LTD.
|Title:||METHOD FOR INSPECTING GLASS PLATE, METHOD FOR MANUFACTURING SAME, AND DEVICE FOR INSPECTING GLASS PLATE|
The present invention has disposed therein: a first imaging system 2 having a first light source 5, a first imaging unit 6 that captures a first transmitted light L1 that is emitted from the first light source 5 and passes through a glass plate G, and a shielding plate 7 that shields a portion of the first transmitted light L1 to form a bright portion and a dark portion in the field of view of the first imaging unit 6; and a second imaging system 3 that has a second light source 8 and a third light source 9, and a second imaging unit 10 that, while capturing, in a bright field, a second transmission light L2 that is emitted from the second light source 8 and passes through the glass plate G, captures, in a dark field, a third transmission light L3 that is emitted from the third light source 9 and passes through the glass plate G. The present invention sorts the types of defects of the glass plate G on the basis of images obtained by the first imaging system 2 and images obtained by the second imaging system 3.