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Optical Engineering

Off-line system for simultaneous inspection of metal surface roughness and flatness by computer-generated holograms
Author(s): Markku Savolainen; Jari T. Rasanen; Kai-Erik Peiponen; Raimo Veil Johannes Silvennoinen
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Paper Abstract

Recently the authors of this paper dealt with computergenerated holograms (CGHs) for the optical inspection of the surface roughness and waviness of relatively smooth surface roughness standards.1 The idea was to exploit two separate sensors to provide information on one hand about the surface roughness by measuring the contrast parameter as defined in Ref. 1, and on the other hand to inspect the surface curvature. Later, we improved the operational function of the surface sensor.

Paper Details

Date Published: 1 December 1996
PDF: 3 pages
Opt. Eng. 35(12) doi: 10.1117/1.601082
Published in: Optical Engineering Volume 35, Issue 12
Show Author Affiliations
Markku Savolainen, Univ. of Joensuu (Finland)
Jari T. Rasanen, Univ. of Joensuu (Finland)
Kai-Erik Peiponen, Univ. of Joensuu (Finland)
Raimo Veil Johannes Silvennoinen, Univ. of Joensuu (Finland)

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