Integrating sphere designs with isotropic throughput
- 15 May 1989
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 28 (10) , 1793-1799
- https://doi.org/10.1364/ao.28.001793
Abstract
An ideal diffuse reflectometer can be defined as a reflectometer with a throughput which is independent of the angle of reflected radiation, as measured at the sample. For integrating spheres, effects related to the detector’s field of view (FOV), the beam port, and internal baffles can result in a throughput which is nonisotropic. This paper analyzes these three sources of nonideal behavior and suggests three sphere designs using nonimaging concentrators which minimize FOV related errors. A technique for measuring the error due to the beam port is also discussed as well as ways of minimizing perturbations caused by baffles.Keywords
This publication has 13 references indexed in Scilit:
- Anomalies in integrating sphere measurements on structured samplesApplied Optics, 1988
- Flat-sample and limited-field effects in integrating sphere measurementsJournal of the Optical Society of America A, 1988
- Reflectometer design using nonimaging opticsApplied Optics, 1987
- Dielectric totally internally reflecting concentratorsApplied Optics, 1987
- Correction methods for integrating‐sphere measurement of hemispherical reflectanceColor Research & Application, 1986
- Flux concentrators in integrating sphere experiments: potential for increased detector signalApplied Optics, 1985
- Integrating sphere theoryOptics Communications, 1970
- Asymmetry of an Integrating SphereApplied Optics, 1963
- Integrating Sphere for Imperfectly Diffuse Samples*Journal of the Optical Society of America, 1961
- Errors in ReflectometryJournal of the Optical Society of America, 1935