Diffuse reflectance of sintered and pressed polytetrafluoroethylene (PTFE)

Patricia Yvonne Barnes; Edward A. Early

doi:10.1117/12.328454

30 October 1998 Diffuse reflectance of sintered and pressed polytetrafluoroethylene (PTFE)

Patricia Yvonne Barnes, Edward A. Early

Proceedings Volume 3426, Scattering and Surface Roughness II; (1998) https://doi.org/10.1117/12.328454
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Polytetrafluoroethylene (PTFE) is widely used in applications requiring a material with a diffuse reflectance factor close to unity. The bidirectional reflectance distribution function (BRDF) of both pressed and sintered samples was measured as a function of wavelength, polarization, and incident and viewing angles. The results for both samples show that the BRDF is constant at wavelengths from 400 nm to 1000 nm and depends on the polarization of the incident beam of radiant flux, that the BRDF varies with viewing angle, and that Helmholtz reciprocity holds for angles from 10 degrees to 60 degrees.

Citation Download Citation

Patricia Yvonne Barnes and Edward A. Early "Diffuse reflectance of sintered and pressed polytetrafluoroethylene (PTFE)", Proc. SPIE 3426, Scattering and Surface Roughness II, (30 October 1998); https://doi.org/10.1117/12.328454

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