| 摘要 |
PROBLEM TO BE SOLVED: To easily and accurately regulate an optical system of a flaw inspecting unit using a one-dimensional CCD camera. SOLUTION: In the case of adjusting an optical system of a flaw inspecting unit using a one-dimensional CCD camera l, it is easily and accurately executed in the following steps by calculating a maximum area of a light reception signal, comparing present number of pixels with a target number of pixels and calculating a maximum gradient of a regulating mark of a regulating mark sheet at a regularly reflecting position, an optical visual field and an optimum focus. 1. Altering an angle of a vertical direction of a camera by stepping motors 6, 10, 15, 17 and cylinders 5, 9, 14, 16 while calculating an area of the reception signal and deciding the regularly reflecting position. 2. Moving the camera in a longitudinal direction by the motors 6, 10, 15, 17 and the cylinders 5, 9, 14, 16 while comparing the present number of the pixels in a designated range of the signal with target number of the pixels and deciding the visual field of the camera. 3. Moving the focus of the camera by the motors 6, 10, 14, 16 and the cylinders 5, 9, 14, 16 and deciding a position where a position of a focus ring is allowed with a maximum gradient of the reception signal of both the regulating marks while calculating a gradient of the marks at both ends of the sheet 30. |
