Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Angle-resolved diffuse reflectance and transmittance

Published

Author(s)

Thomas A. Germer, J C. Stover, Sven Schroeder

Abstract

This chapter will cover the topic of bidirectional reflectance distribution function [BRDF] measurements. These measurements, like the diffuse reflectance and transmittance measurements described in the previous chapter, cover the gamut from highly reflecting but diffuse materials to highly specular, low scatter, materials. BRDF measurements can often be plagued with artifacts that make them notoriously inaccurate, if performed poorly. Detector linearity, stray light, and poor sample treatment, for example, will contribute to errors. This chapter will discuss the various methods for performing these measurements, including laser-based methods and non-laser-based methods. A comparison between methods that use a radiance source and measure radiance and those that under fill the sample and measure power scattered per solid angle will be made. A number of examples are given.
Citation
Spectrophotometry: Accurate Measurements of the Optical Properties of Materials
Publisher Info
Elsevier B.V., Amsterdam, -1

Keywords

BRDF, reflectance, scatter, spectrophotometry, transmittance

Citation

Germer, T. , Stover, J. and Schroeder, S. (2014), Angle-resolved diffuse reflectance and transmittance, Spectrophotometry: Accurate Measurements of the Optical Properties of Materials, Elsevier B.V., Amsterdam, -1 (Accessed August 3, 2021)
Created July 1, 2014, Updated February 19, 2017