@article{oai:niigata-u.repo.nii.ac.jp:00002201, author = {Li, Jinhuan and Sasaki, Osami and Suzuki, Takamasa}, issue = {2}, journal = {Optical Engineering, Optical Engineering}, month = {Feb}, note = {A method is proposed for accurately measuring a sectional profile of a metal cylinder. In this method a sinusoidally vibrating sinusoidal interference pattern is used to generate an exact spatial scale along one direction. Light from top points of a metal cylinder surface is extracted by spatial filtering in an afocal imaging system to form an image of the top points. A time-varying signal is detected in the image, and a sectional profile of the metal cylinder is measured from the phase of the detected signal on a position where the amplitude of the signal has a maximum value. Detection of the amplitude and the phase is carried out easily and exactly with sinusoidal phase-modulating interferometry.}, pages = {023601-1--023601-5}, title = {Measurement of sectional profile of V-shaped metal cylinders using a sinusoidally vibrating interference pattern}, volume = {45}, year = {2006} }