Contact us

Elina Koistinen

Elina Koistinen
EOS Executive Director

Phone, Whatsapp:
+358 50 592 4693



Boglárka Selényi
EOS Communications and Events Assistant
Email:  boglarka[at]


Tiina Romppanen
Finance Assistant, Membership items

Email: tiina[at]





EOS Office (secretariat) and correspondance address

European Optical Society
Länsikatu 15
FI-80110 Joensuu

European Optical Society Oy
Business ID/VAT number: FI25599654
Domicile: Joensuu, Finland

European Optical Society, EOS,
Learned Society registered address (for official use only)

European Optical Society
Institut d'Optique Graduate School
2, Avenue Augustin Fresnel
91127 PALAISEAU cedex–France

The EOS is a registered not-for-profit association under French law and thus exempted from sales tax.
Association no.: W913002847. SIRET no.: 384 459 475 00016.