Measurement of the Derivatives of Curved Surfaces Using Speckle Interferometry

A novel speckle interferometry method to measure the slope change variations of a curved surface is described. The method is simple to implement and provides controllable sensitivity. This latter also encourages the use of mask technique, incorporated with image analysis and phase-shifting procedure...

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Bibliographic Details
Published in:	Journal of modern optics Vol. 41; no. 4; pp. 659 - 661
Main Author:	Rastogi, Pramod K.
Format:	Journal Article
Language:	English
Published:	London Taylor & Francis Group 01-04-1994 Taylor & Francis
Subjects:	Exact sciences and technology Instruments, apparatus, components and techniques common to several branches of physics and astronomy Interferometers Optical instruments, equipment and techniques Physics Speckles Measuring instruments Electronic speckle interferometry Derivative Instrumentation Curved surface Interferometers Interferometry
Online Access:	Get full text
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Summary:	A novel speckle interferometry method to measure the slope change variations of a curved surface is described. The method is simple to implement and provides controllable sensitivity. This latter also encourages the use of mask technique, incorporated with image analysis and phase-shifting procedures, as a way to improve upon the range of sensitivities that one can obtain with the electronic speckle pattern interferometry technique.
ISSN:	0950-0340 1362-3044
DOI:	10.1080/09500349414550671