1990•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
Absolute measurement of diffuse and specular reflectance using an FTIR spectrometer with an integrating sphere
Robert A. Shepherd
Open publisher page 4 citations
Abstract
A novel method for the absolute measurement of both diffuse and specular reflectance using a Fourier transform infrared spectrophotometer with an integrating sphere is presented. By mounting the sample in the center and referencing off the wall of the sphere, total and diffuse reflectance measurements can be made without having to use a reference sample. The specular reflectance is then calculated as the difference between the total and diffuse curves.