Specifying Product Performance for Mesopic Applications

CIE TN 005:2016
Division 2

This Technical Note gives guidance on specifying the performance of lighting products for applications such as lighting of roads and pedestrian areas at night, where the eye is adapted to mesopic conditions. It can be used in conjunction with CIE 191:2010 Recommended System for Mesopic Photometry based on Visual Performance, which gives details of the method to be used to calculate mesopic quantities. This Technical Note does not give guidance relating to how to choose the most suitable lighting product for any particular application; such information is available in the relevant specification standards and application guides, including CIE 206:2014 The Effect of Spectral Power Distribution on Lighting for Urban and Pedestrian Areas.
The publication is written in English, consists of 8 pages and is freely downloadable from the CIE website.

The following members of TC 2-65 “Photometric measurements in the mesopic range“ took part in the preparation of this Technical Note. The committee comes under Division 2 “Physical measurement of light and radiation”.


  • Goodman, T.M. (Chair)    United Kingdom
  • Bergen, T.    Australia
  • Blattner, P.    Switzerland
  • Ohno, Y.    USA
  • Uchida, T.    Japan


  • Dam-Hansen, C.    Denmark
  • Schakel, M.    Netherlands
  • Schanda, J. †    Hungary
  • Shpak, M.    Finland