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3-D laser metrology for the assessment of curved surface

Record type: Conference or Workshop Item (Paper)

Measurement instruments are identified which are suitable for the assessment of curved samples typically used in the manufacture of lens technology. The advantages and limitations of each instrument are discussed, together with their suitability for measuring surfaces and producing data that can be analysed for sphericity information. A number of numerical sphere- fitting algorithms are suggested for radius of curvature analysis, and a Contour Analysis technique is developed for the assessment of errors of Form without the need to sphere-fit to the data. Contour Analysis is shown as a useful visualisation tool, allowing the user to clearly see surface distortions, such as astigmatism, without the need to interpret the deviation from sphere plots.

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Citation

Cross, K.J. and McBride, J.W., (1997) 3-D laser metrology for the assessment of curved surface Ford, D.G. and Postlethwaite, S.R. (eds.) In Laser Metrology & Machine Performance III. vol. 16, Computational Mechanics., pp. 537-548.

More information

Published date: 1997
Venue - Dates: International Conference on Laser Metrology and Machine Performance III, 1997-07-15 - 1997-07-17

Identifiers

Local EPrints ID: 21128
URI: http://eprints.soton.ac.uk/id/eprint/21128
ISBN: 1853125369
PURE UUID: 9902b08d-ea00-40fb-b193-73e3b7d9d7b9

Catalogue record

Date deposited: 03 Nov 2006
Last modified: 17 Jul 2017 16:27

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Contributors

Author: K.J. Cross
Author: J.W. McBride
Editor: D.G. Ford
Editor: S.R. Postlethwaite

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