METHOD AND DEVICE FOR DETECTING CIRCUMFERENTIAL SURFACE DISTORTION

摘要

Provided is a device for detecting distortion of a circumferential surface in an object.  The detection device includes: a drive device (1) which rotates the object around the center axial line in the circumferential surface; an illumination device (2) for illuminating the circumferential surface; a measurement device (3) for measuring the intensity of light reflected from the circumferential surface; and a control device (4) which checks the reflected light intensity obtained by the measurement device while correlating the intensity with the rotation position of the object.  Provided is also a detection method using the detection device.