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Proceedings Paper

Objective Standards For Surface Flaws
Author(s): Lionel R. Baker
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Paper Abstract

The variable results of a recent independent assessment of the relative performance of existing national standards relating to surface flaws such as digs and scratches, together with the greater use of laser optics, has led to renewed interest in objective methods for quantifying surface flaws. A code of practice for the measurement of flaws, with traceability to national standards, based on the use of a microscope image comparator, is described. The severity of a flaw is defined here as being proportional to the amount of light it removes from a beam. This code is suggested as a means for resolving disputes when a particular flaw, identified by any convenient method of observation, is found to be near a threshold of acceptance.

Paper Details

Date Published: 11 April 1989
PDF: 5 pages
Proc. SPIE 1015, Micromachining Optical Components and Precision Engineering, (11 April 1989); doi: 10.1117/12.949468
Show Author Affiliations
Lionel R. Baker, Sira Ltd (UK)

Published in SPIE Proceedings Vol. 1015:
Micromachining Optical Components and Precision Engineering
Peter Langenbeck, Editor(s)

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