Diffuse reflectance of sintered and pressed polytetrafluoroethylene (PTFE)

被引：9

作者：

Barnes, PY ^{[1
]}

Early, EA ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

来源：

SCATTERING AND SURFACE ROUGHNESS II | 1998年 / 3426卷

关键词：

bidirectional reflectance distribution function; diffuse reflectance; polytetrafluoroethylene; PTFE; reflectance;

D O I：

10.1117/12.328454

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：190 / 194

页数：5