NIST High Accuracy Reference Reflectometer-Spectrophotometer.
A new reflectometer-spectrophotometer has been designed and constructed using state-of-the-art technology to enhance optical properties of materials measurements over the ultraviolet, visible, and near-infrared (UV-Vis-NIR) wavelength range (200 nm to 2500 nm). The instrument, Spectral Tri-function Automated Reference Reflectometer (STARR), is capable of measuring specular and diffuse reflectance, bidirectional reflectance distribution function (BRDF) of diffuse samples, and both diffuse and non-diffuse transmittance. Samples up to 30 cm by 30 cm can be measured. The instrument and its characterization are described.
National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.
James E
JE
Proctor
National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.
P
P
Yvonne Barnes
bidirectional; diffuse; hemispherical; monochromator; reflectance; reflectometer; scatter; spectrophotometer; specular