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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 8 — Mar. 10, 2003
  • pp: 1526–1533

Split off-specular reflection and surface scattering from woven materials

Sylvia C. Pont and Jan J. Koenderink  »View Author Affiliations


Applied Optics, Vol. 42, Issue 8, pp. 1526-1533 (2003)
http://dx.doi.org/10.1364/AO.42.001526


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Abstract

We measured radiance distributions for black lining cloth and copper gauze using the convenient technique of wrapping the materials around a circular cylinder, irradiating it with a parallel light source and collecting the scattered radiance by a digital camera. One family of parallel threads (weave or weft) was parallel to the cylinder generator. The most salient features for such glossy plane weaves are a splitting up of the reflection peak due to the wavy variations in local slopes of the threads around the cylinders and a surface scattering lobe due to the threads that run along the cylinder. These scattering characteristics are quite different from the (off-)specular peaks and lobes that were found before for random rough specular surfaces. The split off-specular reflection is due to the regular structures in our samples of man-made materials. We derived simple approximations for these reflectance characteristics using geometrical optics.

© 2003 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(160.0160) Materials : Materials
(240.0240) Optics at surfaces : Optics at surfaces

History
Original Manuscript: July 30, 2002
Revised Manuscript: October 30, 2002
Published: March 10, 2003

Citation
Sylvia C. Pont and Jan J. Koenderink, "Split off-specular reflection and surface scattering from woven materials," Appl. Opt. 42, 1526-1533 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-8-1526


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