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Proceedings Paper

Standard for surface damage
Author(s): Lionel R. Baker
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Paper Abstract

This paper has been produced for use with the new BS4301 (1991). It describes a method for the objective measurement of surface damage such as digs and scratches on optical components. By comparison of image visibilities of defects with line and spot standards, scratches and digs can be quantified in terms of their line-equivalent widths and spot- equivalent diameters. The codes used on optical drawings are described and guidelines for surface damage thresholds are discussed. The preferred equipment to aid the various stages of inspection and measurement is described and the paper concludes with a flow diagram illustrating a typical system for the quality control of transmitting and reflecting components.

Paper Details

Date Published: 1 April 1992
PDF: 11 pages
Proc. SPIE 1573, Commercial Applications of Precision Manufacturing at the Sub-Micron Level, (1 April 1992); doi: 10.1117/12.57761
Show Author Affiliations
Lionel R. Baker, Consultant (United Kingdom)

Published in SPIE Proceedings Vol. 1573:
Commercial Applications of Precision Manufacturing at the Sub-Micron Level

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