– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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CIE JTC-2 (CIE-CCPR): Principles Governing Photometry
This TG completed its task and was dissolved in September 2019.

Terms of reference

The objective of the CIE JTC-2 was reached with the publication of the Principles governing photometry (2019).


  • Dr Yoshihiro Ohno  (NIST)


  • Mrs Teresa Goodman  (NPL)


  • Dr Peter Blattner (METAS)
  • Dr Armin Sperling (PTB)
  • Dr Joanne Zwinkels (NRC)

  CCPR: Upcoming meetings
9–13 May 2022: 25th meeting of the CCPR and related meetings

CCPR summary
General information
Members of the CCPR
KC and SC registration form
CCPR workshops
List of planned RMO comparisons in PR
CCPR publications and bibliography
CCPR working groups
Summary of comparisons in PR
Photographs of the CCPR
Open documents
CCPR documents
CCPR-WG-CMC documents
CCPR-WG-KC documents
CCPR-WG-SP documents