Societal Members
Currently, the following national optical societies in Europe are members of the EOS. There are two groups of EOS societal members:
- EOS Branches (light blue countries):
DGaO (Germany), Photonics Finland (Finland), SFO (France), IOP Optical Group (UK and Ireland), SSOM (Switzerland), SOS (Sweden), SIOF (Italy), HOS (Hungary), LOS (Latvia), and PhotonicsNL (The Netherlands). - EOS Affiliated Societies (dark blue countries):
NPS-OD (Norway), DOPS (Denmark), Promoptica (Belgium), SEDOPTICA (Spain), SPOF (Portugal), PPS-OD (Poland), DOQE-RPS (Romania) and CSSF (Czech and Slovak Republic), WLT (Germany), LAS (Russia), and USPAO (Ukraine). 
| CSSF | 
             Czech and Slowak Society  | 
              
| DGAO | 
             Deutsche Gesellschaft für Angewandte Optik (DGaO)  | 
              
| DOPS | 
             Danish Optical Society  | 
              
| DOQE-RPS | 
             Division of Optics & Quantum Electronics of the Romanian Physical Society  | 
              
| IOP | 
             Institute of Physics Optical Group  | 
              
| LAS | 
             LAS - Laser Association  | 
              
| LOS | 
             Latvian Optical Society  | 
              
| NPS | 
             Norwegian Physical Society - Optics Division (NPS-OD)  | 
              
| Photonics Finland | 
             Photonics Finland  | 
              
| PhotonicsNL | 
             PhotonicsNL  | 
              
| PPS | 
             Polish Physical Society - Optics Division  | 
              
| PromOptica | 
             Promoptica  | 
              
| SEDOPTICA | 
             Sociedad Espagnola de Optica  | 
              
| SFO | 
             Société Francaise d'Optique  | 
              
| SIOF | 
             Societa' Italiana di Ottica e Fotonica (SIOF)  | 
              
| SOS | 
             Swedish Optical Society (SOS)  | 
              
| SPOF | 
             Portuguese Society of Optics and Photonics  | 
              
| SSOM | 
             Swiss Society for Optics and Microscopy (SSOM)  | 
              
| USPAO | 
             Ukrainian Society of Pure and Applied Optics  | 
              
| Wigner Research Centre for Physics | 
             Wigner Research Centre for Physics  | 
              
| WLT | 
             Wissenschaftliche Gesellschaft für Lasertechnik e.V. (WLT)  | 
              



