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Optical Engineering

Measurement of sectional profile of V-shaped metal cylinders using a sinusoidally vibrating interference pattern
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Paper Abstract

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.

Paper Details

Date Published: 1 February 2006
PDF: 5 pages
Opt. Eng. 45(2) 023601 doi: 10.1117/1.2166848
Published in: Optical Engineering Volume 45, Issue 2
Show Author Affiliations
Jinhuan Li, Niigata Univ. (Japan)
Osami Sasaki, Niigata Univ. (Japan)
Takamasa Suzuki, Niigata Univ. (Japan)

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