Fourier optic characterization of paper surfaces

Peter Hansson; Goran Manneberg

doi:10.1117/1.601173

1 January 1997 Fourier optic characterization of paper surfaces

Peter Hansson, Goran Manneberg

Optical Engineering, Vol. 36, Issue 1, (January 1997). https://doi.org/10.1117/1.601173

We investigate the possibility of using a Fourier optic method for on-line determination of the quality of paper. A spatial light modulator is used for the incoherent to coherent image conversion that is necessary since most paper types are opaque. Three different properties are studied, namely crepe frequency, periodicity and amplitude of wire marks and surface structure anisotropy, all of them important factors for controlling the production process. The experiments show that it is indeed possible to achieve good results in measurements down to an exposure time of about 1/1000 s.

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Peter Hansson and Goran Manneberg "Fourier optic characterization of paper surfaces," Optical Engineering 36(1), (1 January 1997). https://doi.org/10.1117/1.601173

Published: 1 January 1997

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