| 摘要 |
PROBLEM TO BE SOLVED: To provide a foreign matter detector of a transparent ingot capable of efficiently detecting a foreign matter and a method for producing a transparent body high in productivity by using the same. SOLUTION: The foreign matter detector 1 of a transparent ingot has an inspection light generating means 2 for irradiating a transparent ingot Ig cut into a plurality of transparent bodys (f) with inspection light, an imaging means 3 for taking the image of the transparent ingot Ig, a moving means 4 for moving the imaging position of the transparent ingot Ig photographed by the imaging means 3 and the irradiation position of the transparent ingot Ig irradiated with inspection light, an image processing means 5 receiving the foreign matter image signal of the foreign matter (m) present in the transparent ingot Ig photographed by the imaging means 3 to convert the same to foreign matter data, an output means 6 outputting the foreign matter data calculated by the image processing means 5 and a control means 7 for controlling the inspection light generating means 2, the imaging means 3, the moving means 4 and the image processing means 5.
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