| 摘要 |
PROBLEM TO BE SOLVED: To devise mechanism structure of an inspecting device so that a surface flaw can be stably and accurately detected regardless of the outer shape and size of a test object. SOLUTION: The surface of the test object is photographed by an image pickup device, and the quality of the test object is determined by processing the obtained image data with an arithmetic device. A flaw device is provided with a drive mechanism adjusting the distance between the image pickup device and the test object and a range finder installed at a prescribed position against the image pickup device and measuring the distance between the image pickup device and the test object. The distance between the image pickup device and the test object is adjusted in a prescribed range based on the distance between the image pickup device and the test object obtained by the range finder to inspect the test object.
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