International Commission for Optics

The IOP adheres to The International Commission for Optics (ICO). ICO was created in 1947. 

It is an Affiliated Commission of the International Union of Pure and Applied Physics (IUPAP), and as such part of the ICSU family (ICSU is the International Council of Science). 

As it is clear from its name, its objective is to contribute, on an international basis, to the progress and diffusion of knowledge in the field of optics.