To provide a surface stain inspection device for a bobbin package, capable of discriminating even a thin stain having a narrow area from the shade of yarn to judge the same.
A bobbin package P is supported so as to be rotationally driven and two or more annular diffused light sources 20a, 20b, 20c, 20d are arranged around the bobbin package P and line sensors 21a, 21b, 21c, 21d for picking up the image of the surface of the yarn wound of the bobbin package along the direction of the rotary shaft of the bobbin package are provided to the center parts of the annular diffused light sources and image processors 22a, 22b, 22c, 22d for forming the intensities of the reflected lights picked up by the line sensors into images to process them are provided.
| JP2016070934 | CAVITY EXAMINATION DEVICE |
| JP2007531887 | Interference system for the use of special optics |
| JPS5587004 | SURFACE-PROPERTY MEASURING METHOD |
HIRAI YASUYUKI
MORIKAWA HIROSHI
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