Optical scattering polarization measurements of fiber orientation of wood with rough surfaces

Jun Shen; Jianqin Zhou

doi:10.1117/12.427052

8 May 2001 Optical scattering polarization measurements of fiber orientation of wood with rough surfaces

Jun Shen, Jianqin Zhou

Proceedings Volume 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001); (2001) https://doi.org/10.1117/12.427052
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '01), 2001, Yokohama, Japan

Abstract

The difference of optical scattering intensity distributions in the directions along and across the fiber can be used to ascertain wood fiber orientation. However, it is difficult to measure the fiber orientation of wood with rough surfaces, due to the overwhelming of the difference by the scattering from the uneven surface. It has been experimentally found that under polarization detection the peak positions in optical scattering intensity distribution versus fiber orientation appear periodic, and with Fourier analysis this periodization could be used to precisely deduce fiber orientations of rough-sawn softwood and porous hardwood samples under investigation. A sensor consisting of one polarized laser and sixteen photodiode/polarization- analyzer assemblies has been proposed to measure fiber orientation.

Citation Download Citation

Jun Shen and Jianqin Zhou "Optical scattering polarization measurements of fiber orientation of wood with rough surfaces", Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); https://doi.org/10.1117/12.427052

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