| 摘要 |
<p>A surface inspection device for a cylindrical body, provided with: an illumination light source (11) disposed above a cylindrical body (W); a beam splitter (13) disposed above the cylindrical body (W) so as to correspond to the illumination light source (11); and a surface condition recognition means (2) disposed above the beam splitter (13). Illumination light (L) emitted from the illumination light source (11) is reflected by the beam splitter (13) and applied coaxially to the surface of the cylindrical body, and the reflected light (Lr) reflected by the surface of the cylindrical body transmits through the beam splitter (13) and is recognized by the surface condition recognition means (2). The device is configured so that the illumination light (L) from the illumination light source (11) is applied from one end side of the cylindrical body (W) in the axis direction (X) toward the other end side so as to be parallel to the axis direction (X). The device can detect, among streak-like surface irregularities, only a defective streak-like surface irregularity.</p> |
