Goniospectroradiometry of Optical Radiation Sources

CIE 239:2020
Division 2

This technical report provides basic measurement principles and practical guidance in goniospectroradiometry of optical radiation sources (i.e. measurement of the spectral distribution as a function of the emission angle of the source). Specifically, it includes measurement principles of the angular distribution of spectral, radiometric, photometric and colorimetric quantities of optical radiation sources, the related scanning method and a practical guide to determine sampling interval, uncertainty aspects and calibration.

The publication is written in English, with a short summary in French and German. It consists of 22 pages with 10 figures and is readily available from the CIE Webshop or from the National Committees of the CIE.


  • Pan, J. (Chair) China
  • Bergen, T. Australia
  • Blattner, P. Switzerland
  • Campos-Acosta, J. Spain
  • Goodman, T. United Kingdom
  • Lin, Y. China
  • Ohno, Y. USA
  • Park, S. Korea
  • Schanda, J. ✟ Hungary
  • Shitomi, H. Japan
  • Young, R. Germany
  • Zong, Y. USA