Patent ID: 8941823
Filing Date: 2015-01-27
Classification: G01N

Abstract:
1. A surface inspection device for a cylindrical body provided with an illumination light source disposed above the cylindrical body, a beam splitter disposed above the cylindrical body so as to correspond to the illumination light source, and a surface condition recognition device disposed above the beam splitter, wherein illumination light emitted from the illumination light source is reflected by the beam splitter and applied coaxially to a surface of the cylindrical body, reflected light reflected by the surface of the cylindrical body transmits through the beam splitter to be recognized by the surface condition recognition device, and the beam splitter is arranged to extend along an entire longitudinal length of the cylindrical body, wherein the surface inspection device is configured such that the illumination light from the illumination light source is applied from one end side of the cylindrical body in an axial direction of the cylindrical body toward the other end side of the cylindrical body so as to be in parallel to the axial direction, and such that the illumination light is simultaneously applied to the entire longitudinal length of the cylindrical body at one time.